PLZZZ HELP

1. Which of the following choices is a form of cellular work which requires ATP?
A. transport work
B. mechanical work
C. chemical work
D. All of these choices are correct.

2. The universal energy currency for all cells is:
A. AMP.
B. ADP.
C. ATP.
D. NADH.

3. Which of the following processes is anaerobic and occurs in the cytoplasm of all cells?
A. glycolysis
B. the Krebs cycle
C. the electron transport chain
D. chemiosmosis

4.The electron transport chain takes place in the:
A. thylakoid membrane.
B. stroma.
C. matrix.
D. cristae membrane.

5. Which of the following choices are the products of glycolysis?
A. carbon dioxide and water
B. oxygen and water
C. glucose
D. 2 pyruvate molecules per glucose

6. Which of the following processes allows glycolysis in yeast and muscle cells that do not have enough oxygen for aerobic respiration?
A. the Krebs cycle
B. fermentation
C. the electron transport chain
D. chemiosmosis

7. The first organisms on Earth probably obtained their energy through:
A. photosynthesis.
B. aerobic respiration.
C. anaerobic respiration.
D. None of these choices are correct.

8. The process of photosynthesis takes place completely in the:
A. chloroplast.
B. mitochondrion.
C. cytoplasm.
D. nucleus.

9. Which part of photosynthesis takes place in the stroma and uses ATP and NADPH to reduce carbon dioxide to sugars?
A. light-dependent phase
B. light reactions
C. aerobic phase
D. Calvin cycle

10. Where does the oxygen produced in photosynthesis come from?
A. Carbon dioxide is split in the light independent reactions.
B. Water is split in the light reactions to replace electrons lost by chlorophyll.
C. Glucose is split during glycolysis.
D. Oxygen is released during fermentation.

11. Organisms that can use photosynthesis to make their own food are called:
A. consumers.
B. heterotrophs.
C. chemoautotrophs.
D. autotrophs.

12. External respiration is the exchange of oxygen and carbon dioxide between:
A. body cells and blood in capillaries throughout the body.
B. body cells and blood in the capillaries of the blood.
C. blood and the air in the alveoli of the lungs.
D. air in the alveoli of the lungs and body cells.

13. Which of the following choices shows the correct order of increasing complexity?
A. cells----systems----tissues----organs
B. cells----organs----systems----tissues
C. cells----tissues----systems----organs
D. cells----tissues----organs----systems

14. The tiny air sacks where external respiration takes place between the blood in the lung capillaries and air are called:
A. bronchi.
B. alveoli.
C. bronchioles.
D. nasal cavities.

15. The upper chamber of the heart that receives blood from the lungs is the:
A. left atrium.
B. left ventricle.
C. right atrium.
D. right ventricle.

16. Which type of blood vessels carry blood toward the heart and have thin walls and one-way valves?
A. arteries
B. capillaries
C. veins
D. aortas

17. Which type of blood cells have nuclei and are part of the immune system?
A. plasma
B. platelets
C. red blood cells
D. white blood cells

18. Which type of cells in the blood are concerned with the clotting of the blood?
A. plasma
B. platelets
C. red blood cells
D. white blood cells

19. The heart chamber that pumps blood to the lungs via the pulmonary artery is the:
A. left atrium.
B. left ventricle.
C. right atrium.
D. right ventricle.

20. The highest blood pressure that occurs during the contraction phase of the ventricles is:
A. diastolic blood pressure.
B. systolic blood pressure.
C. hypertensive pressure.
D. None of these choices are correct.

1 ATP hydrolysis provides the energy needed for many essential processes in organisms and cells. These include intracellular signaling, DNA and RNA synthesis, Purinergic signaling, synaptic signaling, active transport, and muscle contraction

2 Adenosine 5'-triphosphate, or ATP, is the principal molecule for storing and transferring energy in cells. It is often referred to as the energy currency of the cell and can be compared to storing money in a bank.