Question

True or False? Only eukaryotes need ATP to power their cells.

True

False

Important: For this question, there may be more than one answer, so check ALL that apply.

Which statements are incorrect?

In eukaryotic cells, photosynthesis occurs in chloroplasts.

In eukaryotic cells, cellular respiration occurs in mitochondria.

Cellular respiration and photosynthesis both produce ATP to power cellular work.

Only heterotrophs perform cellular respiration.

Photosynthesis produces sugars (glucose), which can then be used in cellular respiration to produce ATP.

Answer 1

1.

• Eukaryotic organisms have organelles like mitochondria. ATP synthase complex, designated as F₀F₁- ATP synthase, is located within the mitochondrial cristae. They help in back flow of proton, creating free energy to generate ATP.
• In prokaryotic organisms like bacteria, cytoplasmic membrane function similarly to generate ATP.
• ATP or Adenosine triphosphate act as energy currency for all cells, both eukaryotic and prokaryotic.

Answer: False.

2.

• During the process of photosynthesis, light energy is converted to chemical energy, which generates energy in form of the “assimilatory power”, or ATP.
• During the process of photosynthesis, light energy is absorbed by photosynthetic pigments in chloroplast in eukaryotic cells.
• During dark reaction of photosynthesis, Glucose is generated (G3P), which is used for cellular respiration to produce ATP.
• The mechanism of oxidative phosphorylation occurs in mitochondria of live cells, where ATP is produced.
• During cellular respiration, several metabolic reactions occur in cells (both autotroph and heterotrophs), energy is spontaneously released, which is equivalent to free energy value and is converted to energy currency like ATP.

Answer:Only heterotrophs perform cellular respiration.