Biology is one of the major subjects for MDCAT preparation because it provides the basis for understanding human anatomy, physiology, and medical sciences. The 9th Class Biology Complete Quiz has been devised to enable the students to master the key concepts from their syllabus, ranging from cell biology and biological molecules to enzymes and diversity of life. This extensive quiz will give students the opportunity to assess their knowledge and thereby identify their weak areas to improve on in preparation for both academic exams and entrance tests.
Key Topics in the 9th Class Biology Quiz
The 9th Class Biology Complete Quiz covers all essential topics such as cell structure and functions, tissues in animals and plants, nutrition, and transportation in organisms. It also includes chapters on gaseous exchange, respiration, and photosynthesis, which are crucial for understanding complex biological processes. By attempting this quiz, students can gain a deeper understanding of how living organisms function and interact with their environment, which is vital for their MDCAT preparation.
This quiz not only strengthens theoretical knowledge but also develops critical thinking skills, since it is based on real-life scenarios and practical questions. It helps students retain information better and prepare for the objective-type questions that they will see in the MDCAT Biology section.
Quiz for Practice
The MDCAT Quiz for 9th Class Biology is an excellent way to assess your preparation. The questions are based on frequently tested concepts and are designed to simulate the actual exam pattern. Regular practice with these quizzes improves time management, conceptual clarity, and problem-solving skills. It also highlights important topics that require more attention, ensuring efficient and targeted study sessions.
- Test Name: 9th Class Biology Complete Quiz
- Total Questions: 270
- Total Marks: 270
- Time: 135 minutes
Note: Answer of the questions will change randomly each time you start the test, once you are finished, click the View Results button.
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Free Flashcard for Quick Revision
Flashcards are also available for free to quickly revise important definitions, diagrams, and biological processes. These flashcards cover key terms and concepts from the 9th Class Biology syllabus, making them an effective tool for last-minute revisions. Flashcards help students retain information for longer periods and boost their confidence before exams.
In the human circulatory system, what is the name of the valve between the right atrium and the right ventricle?
Tricuspid valve
What is the primary function of the cilia in the respiratory system?
Move mucus and particles out of the respiratory tract
In the human circulatory system, what is the name of the valve between the left ventricle and the aorta?
Aortic valve
What is the function of the contractile vacuole in some single-celled organisms?
Regulate water content by expelling excess water
What is the term for the pressure exerted by blood against the walls of blood vessels during heart contractions?
Blood pressure
What is the main function of the red blood cells in the circulatory system?
Transport oxygen to body tissues
What is the term for the rhythmic contraction of the heart that pumps blood into the circulatory system?
Cardiac cycle
What is the name of the process by which cells engulf liquids by forming vesicles?
Pinocytosis
What is the function of the alveoli in the respiratory system?
Site of gas exchange in the lungs
Which type of blood vessels have thin walls that allow for the exchange of gases, nutrients, and waste products with tissues?
Capillaries
What is the term for the movement of water across a selectively permeable membrane from an area of high water concentration to an area of low water concentration?
Osmosis
What is the main function of the tricuspid valve in the heart?
Prevents backflow of blood from the right ventricle to the right atrium
In the human circulatory system, what is the name of the vessel that carries oxygenated blood from the heart to the rest of the body?
Aorta
What is the role of the sodium-potassium pump in cells?
Actively transports sodium out and potassium into the cell to maintain ion balance
What is the term for the process of moving substances out of a cell by merging vesicles with the cell membrane?
Exocytosis
In the human circulatory system, what is the name of the vessel that carries deoxygenated blood from the body to the right atrium?
Vena cava
What is the function of the spleen in the circulatory system?
Filter and remove old or damaged blood cells
In the nervous system, what is the term for the junction between two nerve cells where the transmission of impulses occurs?
Synapse
What is the term for the movement of molecules from an area of low concentration to an area of high concentration with the use of energy?
Active transport
What is the primary function of the phloem in plants?
Transporting sugars produced in photosynthesis
What is the name of the process where cells take in large particles by engulfing them with their cell membrane?
Endocytosis
What is the function of the myelin sheath in the nervous system?
Insulate and speed up the transmission of nerve impulses
In the human circulatory system, what is the name of the valve between the left atrium and the left ventricle?
Mitral valve
What is the name of the process where white blood cells engulf and digest foreign particles or bacteria?
Phagocytosis
What is the primary function of the respiratory system in transport?
Exchange of gases (oxygen and carbon dioxide)
What is the term for the network of vessels that transport blood throughout the body?
Vascular system
Which blood vessel carries oxygenated blood from the lungs to the heart?
Pulmonary veins
What is the function of the nephron in the kidney?
Filtration and reabsorption of substances from the blood
What is the name of the process by which water molecules move across a selectively permeable membrane?
Osmosis
In the digestive system, what transports nutrients from the small intestine to the rest of the body?
Blood vessels
What is the term for the process of nutrient absorption in the small intestine?
Absorption
Which nutrient is essential for the formation of DNA and red blood cells?
Folate (Vitamin B9)
What is the primary function of phosphorus in the body?
Bone and teeth formation, energy metabolism
What is the role of sodium in the body?
Regulate fluid balance and nerve function
Which vitamin is important for the prevention of neural tube defects during pregnancy?
Folate (Vitamin B9)
What is the primary function of the digestive system?
Break down food into nutrients for absorption
Which nutrient is the primary component of enzymes and plays a role in energy metabolism?
Minerals
What is the term for the condition of excessive body fat that poses a health risk?
Obesity
What is the main source of omega-3 fatty acids in the diet?
Fatty fish (e.g., salmon, mackerel)
Which vitamin is crucial for the absorption of calcium in the intestines?
Vitamin D
What is the term for the process of breaking down food into smaller particles for digestion?
Mechanical digestion
Which mineral is important for muscle contractions, nerve impulses, and fluid balance?
Potassium
What is the recommended daily intake of fruits and vegetables for a balanced diet?
5 servings
What is the primary function of vitamin K in the body?
Blood clotting and bone health
Which nutrient is the body's primary energy storage molecule?
Glycogen
What is the term for the condition resulting from inadequate vitamin C intake, causing bleeding gums and joint pain?
Scurvy
Which type of fat is considered heart-healthy and is found in olive oil and avocados?
Monounsaturated fat
What is the role of calcium in the body?
Building and maintaining strong bones and teeth
Which nutrient is crucial for the development and maintenance of healthy skin, vision, and mucous membranes?
Vitamin A
What is the main function of the B-complex vitamins in the body?
Act as coenzymes in energy metabolism
What is the term for the condition of inadequate iron levels in the body, leading to fatigue and weakness?
Iron deficiency anemia
Which mineral is essential for nerve function, muscle contractions, and bone health?
Magnesium
What is the primary role of carbohydrates during exercise?
Provide a quick source of energy
Which vitamin is essential for vision and is abundant in carrots?
Vitamin A
What is the term for the body's energy expenditure at rest?
Basal metabolic rate (BMR)
Which nutrient is a component of hemoglobin and is responsible for oxygen transport in the blood?
Iron
What is the primary function of the mineral iodine in the body?
Regulate thyroid function
Which vitamin is important for wound healing and collagen formation?
Vitamin C
What is the term for a complete protein that contains all essential amino acids?
High-quality protein
Which nutrient is essential for the production of red blood cells?
Iron
What is the term for the fluid-filled space inside the chloroplast where the Calvin cycle takes place?
Stroma
What is the role of carotenoids in photosynthesis?
Accessory pigments that broaden the spectrum of light for photosynthesis
What is the primary function of the Calvin cycle in photosynthesis?
Synthesize glucose from carbon dioxide
In which cellular organelle does oxidative phosphorylation occur?
Mitochondria
What is the role of the thylakoid membrane in photosynthesis?
Location of the light-dependent reactions
What is the primary source of oxygen released during photosynthesis?
Splitting water molecules
What is the purpose of the light-dependent reactions in photosynthesis?
Generate ATP and NADPH
What is the term for the process of converting carbon dioxide into organic compounds during photosynthesis?
Carbon fixation
What is the final product of the Calvin cycle in photosynthesis?
Glucose
What is the primary pigment responsible for capturing light energy in photosynthesis?
Chlorophyll
Where does photosynthesis take place in plant cells?
Chloroplasts
What is the term for the process of converting light energy into chemical energy in photosynthetic organisms?
Photosynthesis
What is the term for the metabolic pathway that breaks down fatty acids for energy?
Beta-oxidation
What is the role of NAD+ in cellular respiration?
Accepts electrons and becomes reduced to NADH
What is the function of the proton gradient in chemiosmosis?
Drive ATP synthesis
What is the purpose of the electron transport chain in cellular respiration?
Create a proton gradient for ATP synthesis
What is the term for the process of splitting glucose into two molecules of pyruvate?
Glycolysis
What is the main goal of cellular respiration?
Produce ATP for cellular activities
Which stage of cellular respiration involves the citric acid cycle?
Krebs cycle
How many ATP molecules are produced per NADH during oxidative phosphorylation?
2.5 ATP
What is the term for the process by which ATP is synthesized using the energy stored in a proton gradient?
Chemiosmosis
What is the main product of the Krebs cycle?
NADH and FADH2
What is the role of oxygen in cellular respiration?
Final electron acceptor in the electron transport chain
Where do the reactions of glycolysis take place in eukaryotic cells?
Cytoplasm
Which molecule is often called the "energy currency" of the cell?
ATP
What is the primary function of the electron transport chain?
Generate a proton gradient for ATP synthesis
What is the term for the metabolic pathway that converts glucose into pyruvate?
Glycolysis
Which stage of cellular respiration produces the most ATP?
Electron transport chain
What is the function of FADH2 in cellular respiration?
Carries electrons to the electron transport chain
What is the term for the breakdown of glucose to pyruvate in the absence of oxygen?
Anaerobic glycolysis
What is the role of the Km value in enzyme kinetics?
Substrate concentration at half of Vmax
What is the function of the induced fit model in enzyme-substrate interactions?
The enzyme changes shape to better accommodate the substrate
Which enzyme is responsible for adding phosphate groups to molecules?
Kinase
What is the term for the specific three-dimensional shape of an enzyme's active site?
Tertiary structure
Which type of enzyme inhibition involves a molecule binding to an allosteric site, changing the enzyme's shape?
Allosteric inhibition
What is the term for the process where an enzyme loses its shape and function due to a change in pH?
Denaturation
Which enzyme is responsible for joining two molecules together by forming a covalent bond?
Ligase
What is the term for the product of an enzyme-catalyzed reaction?
Product
What is the term for the substance upon which an enzyme acts and catalyzes a reaction?
Substrate
Which type of enzyme works in both anabolic and catabolic reactions?
Amphibolic enzymes
What is the effect of substrate concentration on enzyme activity?
Initially increases, then levels off
Which enzyme is responsible for breaking down hydrogen peroxide into water and oxygen?
Catalase
What is the term for the maximum rate of an enzyme-catalyzed reaction?
Vmax
What is the function of an enzyme inhibitor?
Reduces or stops enzyme activity
Which type of inhibition involves a molecule binding to the active site, preventing substrate binding?
Competitive inhibition
What is the role of an allosteric site on an enzyme?
A site other than the active site that can regulate enzyme activity
Which enzyme is responsible for breaking down nucleic acids into nucleotides?
Nuclease
What is the function of a holoenzyme?
An enzyme with its cofactor or coenzyme
Which type of enzyme inhibition can be overcome by adding more substrate?
Competitive inhibition
What is the effect of pH on enzyme activity?
It can denature the enzyme if outside the optimal pH range
What is the role of the active site on an enzyme?
Binds with the substrate to catalyze a reaction
Which enzyme is responsible for breaking down lipids into fatty acids and glycerol?
Lipase
What is the function of coenzymes in enzymatic reactions?
Assist enzymes by transferring chemical groups
What is the term for the process where an enzyme loses its shape and function due to extreme pH or temperature?
Denaturation
How does an enzyme affect the activation energy of a reaction?
Lowers the activation energy
What is the term for the initial investment of energy required to start a chemical reaction?
Activation energy
Which enzyme is responsible for breaking down starch into maltose?
Amylase
What is the term for a molecule that increases the rate of an enzyme-catalyzed reaction?
Activator
Which type of inhibition involves a molecule binding to an allosteric site on the enzyme?
Non-competitive inhibition
What is the function of competitive inhibitors?
Bind to the active site, preventing substrate binding
What is the role of the G1 phase in the cell cycle?
Cellular growth and normal metabolic processes
What is the function of the kinetochore during mitosis?
Attach spindle fibers to the centromere of a chromosome
Which phase of the cell cycle involves the replication of DNA?
S phase
What is the significance of the G2 checkpoint?
Checks for DNA damage and ensures proper DNA replication before entering mitosis
What is the purpose of the G2 phase in the cell cycle?
Final preparations for mitosis
What is the term for the process of cell division in prokaryotic cells?
Binary fission
What is the role of the centrioles during mitosis in animal cells?
Organize microtubules and form the mitotic spindle
What happens during telophase of mitosis?
Chromosomes de-condense, and nuclear envelopes reform
What is the term for the two identical copies of a replicated chromosome?
Sister chromatids
What is the function of the mitotic spindle in mitosis?
Separates sister chromatids during cell division
What is the purpose of the S phase in the cell cycle?
DNA synthesis and replication
What is the term for the region of a chromosome where spindle fibers attach during cell division?
Kinetochore
In which phase of the cell cycle does the cell grow and carry out normal metabolic activities?
G1 phase
What is the role of the spindle apparatus during cell division?
Separation of sister chromatids and chromosome movement
What is the main function of the G1 phase?
Cellular growth and normal metabolic processes
What is the G0 phase of the cell cycle?
Non-dividing state where cells exit the cell cycle
What is the significance of the G1 checkpoint in the cell cycle?
Decides whether the cell will enter the cell cycle or exit and enter G0 phase
What is the term for the division of the cytoplasm and organelles following mitosis?
Cytokinesis
What is the role of the G2 checkpoint in the cell cycle?
Checks for DNA damage and ensures proper DNA replication
What happens to the nuclear envelope during mitosis?
Breaks down and reforms
What is the function of the M checkpoint in the cell cycle?
Ensures accurate chromosome alignment and attachment to the spindle
Which phase of the cell cycle immediately follows mitosis?
G1 phase
What is the role of the spindle fibers during mitosis?
Separate sister chromatids and guide chromosome movement
What is the term for the process of programmed cell death that eliminates unwanted or damaged cells?
Apoptosis
What is the primary function of the G1 checkpoint?
Check for DNA damage and assess cell size
What is the significance of mitosis in multicellular organisms?
Growth, development, and tissue repair
What is the result of mitosis?
Two genetically identical daughter cells
What is the purpose of cytokinesis in the cell cycle?
Division of the cytoplasm and organelles
During which phase of mitosis do sister chromatids separate and move towards opposite poles?
Anaphase
What is the term for the point at which sister chromatids are held together?
Centromere
Which type of tissue covers and protects body surfaces and organs?
Epithelial tissue
What is the function of tight junctions in cell junctions?
Prevent leakage of substances between cells
Which phase of the cell cycle follows mitosis and is the division of the cytoplasm?
Cytokinesis
What is the function of microvilli in cells?
Increase surface area for absorption
What is the term for the process of cell division that produces two identical daughter cells?
Mitosis
Which cellular structure is responsible for maintaining cell shape and providing structural support?
Cytoskeleton
What is the function of the endoplasmic reticulum in a cell?
Synthesize and modify proteins and lipids
Which type of tissue is responsible for transmitting electrical impulses in the nervous system?
Nervous tissue
What is the primary function of the nucleolus in the nucleus?
Synthesize ribosomal RNA
What is the term for the engulfment of large particles or liquid droplets by a cell?
Phagocytosis
In which phase of the cell cycle does the cell spend most of its time?
Interphase
What is the function of peroxisomes in a cell?
Breakdown of fatty acids and detoxification
What is the primary function of the flagella in cells?
Movement of the entire cell
Which type of cell junction acts like a rivet, anchoring adjacent cells together?
Desmosome
What is the term for the process of programmed cell death that occurs in multicellular organisms?
Apoptosis
What is the role of the centrioles during cell division in animal cells?
Organize microtubules and form the mitotic spindle
Which type of tissue is responsible for the contraction and movement of body parts?
Muscle tissue
What is the purpose of the cell wall in plant cells?
Provides structural support and protection
Which phase of mitosis involves the separation of sister chromatids towards opposite poles of the cell?
Anaphase
What is the function of the mitochondria in a cell?
Generate energy through cellular respiration
Which type of tissue lines the surfaces and cavities of organs and structures in the body?
Epithelial tissue
What is the role of the rough endoplasmic reticulum in protein synthesis?
Ribosomes on its surface synthesize proteins
What is the purpose of the cytoskeleton in a cell?
Provides structural support and facilitates cell movement
What is the main function of the nucleus in a eukaryotic cell?
Contains genetic material and controls cell activities
Which organelle contains enzymes for intracellular digestion and breaking down cellular debris?
Lysosome
What is the function of lysosomes in a cell?
Breakdown of cellular waste and recycling of materials
Which type of cell junction allows the direct exchange of ions and small molecules between adjacent cells?
Gap junction
What is the primary function of the smooth endoplasmic reticulum?
Lipid synthesis and detoxification
In which cellular organelle does photosynthesis take place in plant cells?
Chloroplast
What is the function of cilia in cells?
Movement of substances along the cell surface
How does biodiversity contribute to climate regulation?
Plants absorb carbon dioxide and release oxygen, helping regulate the climate
What is the term for the disappearance of a species from its natural habitat?
Extinction
What is the role of corridors in promoting biodiversity conservation?
Connect fragmented habitats, allowing species to move and maintain gene flow
How does biodiversity contribute to food security?
Diverse ecosystems provide a variety of food sources and genetic resources for crops
What is the term for the total variety of all living organisms on Earth?
Biological Diversity
What is the purpose of captive breeding programs in conservation?
To breed and raise endangered species in controlled environments
What is the term for the interconnected network of all the planet's ecosystems?
Biosphere
How does biodiversity contribute to cultural and recreational value?
Diverse ecosystems provide opportunities for aesthetic enjoyment and cultural practices
What is the main threat to the survival of many primates in the wild?
Habitat loss due to deforestation
What is the term for the variety of different plant and animal species in a given area?
Species Diversity
How does biodiversity contribute to the stability of ecosystems?
More diverse ecosystems are better able to withstand disturbances
What is the main goal of habitat restoration projects?
To return ecosystems to their natural state and enhance biodiversity
What is the primary factor influencing the distribution of terrestrial biomes?
Climate, particularly temperature and precipitation
How does biodiversity contribute to ecosystem resilience?
Diverse ecosystems are more adaptable to environmental changes
What is the term for the number of different species in a particular area?
Species Richness
What is the main threat to the Amazon rainforest's biodiversity?
Deforestation for agriculture and logging
What is the importance of biodiversity in medicine?
Many medicines are derived from plants and other organisms
What is the IUCN Red List?
A list of species categorized by their risk of extinction
What is the term for the gradual change in the composition of species in a given area over time?
Ecological succession
Which factor contributes to the loss of genetic diversity in a population?
Small population size
What is the role of pollinators in maintaining biodiversity?
They facilitate the reproduction of flowering plants
What is the main threat to marine biodiversity?
Overfishing and habitat destruction
What is the purpose of a gene bank or seed bank?
To conserve genetic diversity of plants for future use
What is the term for species that are found only in specific regions and nowhere else in the world?
Endemic species
What is the primary cause of the decline in amphibian populations worldwide?
Habitat loss and degradation
Which term refers to the variety of different ecosystems in a particular area?
Landscape Diversity
What is the importance of biodiversity in providing ecosystem services?
Biodiversity contributes to essential services like pollination, water purification, and climate regulation
What is the main function of a wildlife corridor?
Connect fragmented habitats to facilitate species movement
Which of the following is an example of an invasive species?
Zebra mussels in North American waterways
What is the purpose of biodiversity hotspots?
Areas with high levels of species endemism and conservation importance
How would you determine the impact of noise pollution on the behavior of a nocturnal animal species?
Monitor noise levels, study animal behavior, and assess population trends
If a crop is failing to yield the expected harvest, how would you investigate potential soil nutrient deficiencies?
Analyze soil samples, study plant growth, and assess nutrient levels
How would you investigate the impact of habitat fragmentation on a population of large mammals?
Study changes in habitat structure, population size, and animal movement
If a patient is experiencing allergic reactions to a medication, how would you identify the allergen and find an alternative treatment?
Conduct allergy tests and explore alternative medications
How would you investigate the impact of a new agricultural pesticide on non-target insect species?
Conduct controlled experiments and monitor non-target insects
If a population of insects is damaging crops, how would you develop a sustainable pest management strategy?
Implement integrated pest management, use biological controls
How would you investigate the impact of climate change on the migration patterns of a bird species?
Monitor temperature changes, study migration routes, and observe behavior
If a population of plants is failing to reproduce, how would you investigate potential pollination issues?
Study pollinator activity, observe flower structure, and assess environmental conditions
How would you investigate the impact of air pollution on respiratory health in a human population?
Analyze air quality data, study respiratory conditions, and assess medical records
If a population of animals is showing signs of a new infectious disease, how would you identify the causative agent?
Collect samples, conduct laboratory tests, and identify the pathogen
How would you investigate the factors contributing to the decline of coral reefs in a specific region?
Study water quality, temperature, human activities, and coral health
If a population of birds is exhibiting abnormal behavior, how would you investigate the potential role of environmental contaminants?
Analyze pollutants in the environment and observe bird behavior
How would you determine the impact of a new agricultural practice on soil health?
Monitor soil composition and observe changes in plant growth
If a species of plant is invasive, how would you develop a strategy to control its spread and protect native flora?
Implement removal programs and barriers
How would you investigate the factors contributing to a decline in pollinator populations?
Study habitat changes, pesticide use, and climate
If a patient is not responding well to a specific medication, how would you investigate the possibility of drug resistance?
Conduct genetic tests and assess patient history
How would you determine the impact of ocean acidification on marine life?
Monitor pH levels and study changes in marine ecosystems
If a population of amphibians is experiencing a decline, how would you investigate the potential impact of environmental toxins?
Analyze water and soil for toxins, study population trends
How would you investigate the role of a specific gene in the development of a genetic disorder?
Use genetic knockout experiments and study affected individuals
If a cell culture is contaminated, what steps would you take to identify and eliminate the source of contamination?
Identify and discard contaminated cultures, sterilize equipment
How would you study the impact of deforestation on the population of a particular animal species?
Monitor changes in habitat, population size, and behavior
If a species of fish is overfished, how would you develop a conservation strategy to protect the population?
Implement fishing regulations, establish marine reserves
How would you investigate the effectiveness of a new vaccine in preventing the spread of a viral disease?
Conduct controlled clinical trials with vaccinated and unvaccinated groups
If a population of insects is damaging crops, how would you develop an environmentally friendly solution?
Introduce natural predators, use organic pesticides
How would you investigate the impact of climate change on a specific plant species?
Monitor changes in temperature, precipitation, and plant population
If a forest ecosystem is experiencing a decline in biodiversity, how would you investigate the contributing factors?
Study habitat changes, human impact, and species interactions
How would you determine the effect of a new pesticide on non-target organisms in an agricultural setting?
Conduct controlled experiments and monitor non-target species
If a patient is exhibiting symptoms of a disease, what steps would you take to diagnose the condition?
Conduct medical tests, analyze symptoms, and consider medical history
How would you investigate the impact of pollution on aquatic ecosystems?
Measure pollutant levels and observe changes in aquatic life
If a population of birds is declining in a specific area, how would you investigate the potential impact of habitat loss?
Assess changes in habitat and population trends
What is the purpose of the Krebs cycle in cellular respiration?
Generate energy-rich molecules
What is the function of the lens in the eye?
Focus light
Which gas is responsible for the blue color of the sky?
Nitrogen
What is the role of the Golgi apparatus in a cell?
Modify and package proteins
What is the primary function of the circulatory system?
Transport nutrients and oxygen
What is the function of the endoplasmic reticulum in a cell?
Protein synthesis
What is the powerhouse of plant cells?
Chloroplast
Which gas do humans exhale during respiration?
Carbon dioxide
What is the basic building block of proteins?
Amino acids
What is the role of hemoglobin in the blood?
Transport oxygen
What is the process by which an organism develops from a fertilized egg?
Development
What is the function of the mitochondria in a cell?
Energy production
Which gas is responsible for the greenhouse effect?
Carbon dioxide
What is the largest ocean on Earth?
Pacific Ocean
What is the pH scale used to measure?
Acidity or alkalinity
What is the purpose of the enzyme amylase?
Digestion of starch
What is the smallest bone in the human body?
Stapes
In what organelle does cellular respiration occur?
Mitochondria
What is the process by which plants lose water to the atmosphere?
Transpiration
Which planet is known as the Red Planet?
Mars
What is the purpose of the scientific method?
Systematic investigation
What is the main function of the nervous system?
Transmit signals
Which part of the flower produces pollen?
Anther
What is the chemical symbol for gold?
Au
What is the role of white blood cells in the immune system?
Fight infections
What is the function of the ribosomes in a cell?
Protein synthesis
Which gas makes up the majority of Earth's atmosphere?
Nitrogen
What is the name of the process by which a cell divides into two identical daughter cells?
Mitosis
Which scientist proposed the theory of evolution by natural selection?
Charles Darwin
What is the process by which cells break down glucose to release energy?
Cellular Respiration
