practices 2
answer the following questions about atp. darken the circle or circles that correspond to your answer choice(s).
1. which of the following are a part of an atp molecule? choose all that apply.
ⓐ deoxyribose sugar ⓑ adenine
ⓒ ribose sugar ⓓ bicarbonate
ⓔ phosphate ⓕ cytosine
2. how is adp different from atp?
ⓐ adp has one less phosphate group and can store more energy.
ⓑ adp has one more phosphate group and can store more energy.
ⓒ adp has one more phosphate group and stores less energy.
ⓓ adp has one less phosphate group and stores less energy.
3. when is energy released from atp?
ⓐ a chemical bond is broken and a phosphate is removed.
ⓑ a chemical bond is broken and a phosphate is added.
ⓒ a chemical bond is formed as a phosphate is removed.
ⓓ a chemical bond is formed as a phosphate is added.
4. which process(es) use atp in a cell? choose all that apply.
ⓐ active transport ⓑ moving organelles
ⓒ facilitated diffusion ⓓ osmosis
ⓔ simple diffusion ⓕ sodium - potassium pump
5. which type of energy is stored in atp?
ⓐ chemical potential ⓑ chemical kinetic
ⓒ mechanical potential ⓓ mechanical kinetic

Question

practices 2
answer the following questions about atp. darken the circle or circles that correspond to your answer choice(s).
1. which of the following are a part of an atp molecule? choose all that apply.
   ⓐ deoxyribose sugar  ⓑ adenine
   ⓒ ribose sugar       ⓓ bicarbonate
   ⓔ phosphate          ⓕ cytosine
2. how is adp different from atp?
   ⓐ adp has one less phosphate group and can store more energy.
   ⓑ adp has one more phosphate group and can store more energy.
   ⓒ adp has one more phosphate group and stores less energy.
   ⓓ adp has one less phosphate group and stores less energy.
3. when is energy released from atp?
   ⓐ a chemical bond is broken and a phosphate is removed.
   ⓑ a chemical bond is broken and a phosphate is added.
   ⓒ a chemical bond is formed as a phosphate is removed.
   ⓓ a chemical bond is formed as a phosphate is added.
4. which process(es) use atp in a cell? choose all that apply.
   ⓐ active transport   ⓑ moving organelles
   ⓒ facilitated diffusion  ⓓ osmosis
   ⓔ simple diffusion   ⓕ sodium - potassium pump
5. which type of energy is stored in atp?
   ⓐ chemical potential  ⓑ chemical kinetic
   ⓒ mechanical potential  ⓓ mechanical kinetic

Accepted Answer

### Question 1
# Brief Explanations:
ATP (adenosine triphosphate) structure: sugar is ribose (not deoxyribose), base is adenine, and it has phosphate groups. Deoxyribose is in DNA, cytosine is a DNA/RNA base (not in ATP's base part). So adenine (A), ribose (B), phosphate (E) are part of ATP.
# Answer:
A. deoxyribose sugar (incorrect), B. ribose sugar (correct), D. adenine (correct), E. phosphate (correct), F. cytosine (incorrect) → Correct choices: B, D, E

### Question 2
# Brief Explanations:
ATP has 3 phosphate groups, ADP has 2. So ADP has one less phosphate. Energy is stored in the phosphate bond; breaking a bond in ATP (losing a phosphate to become ADP) releases energy, so ADP stores less energy than ATP. Thus, ADP has one less phosphate and stores less energy.
# Answer:
D. ADP has one less phosphate group and stores less energy.

### Question 3
# Brief Explanations:
ATP releases energy when the high - energy phosphate bond is broken, and a phosphate group is removed (converting ATP to ADP). Breaking a bond (not forming) releases energy. So when a chemical bond is broken and a phosphate is removed (ATP → ADP + Pi), energy is released.
# Answer:
A. A chemical bond is broken and a phosphate is removed.

### Question 4
# Brief Explanations:
ATP is used in active processes (requires energy). Active transport (A) needs ATP. Moving organelles (B) (like motor proteins moving vesicles) needs ATP. Sodium - potassium pump (D) is active transport, uses ATP. Facilitated diffusion (C) and simple diffusion (E) are passive (no ATP needed), osmosis (D? Wait, osmosis is passive). So active transport (A), moving organelles (B), sodium - potassium pump (D) use ATP.
# Answer:
A. active transport, B. moving organelles, D. sodium - potassium pump

### Question 5
# Brief Explanations:
ATP stores chemical energy in the bonds between phosphate groups. Chemical potential energy is stored in chemical bonds. Kinetic energy is motion, mechanical potential is for position/force, mechanical kinetic is motion - related. So ATP stores chemical potential energy.
# Answer:
A. chemical potential

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