Q: Which equation correctly represents the overall process of cellular respiration?

$$ C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{energy} $$

Question 1

Which of the following best distinguishes autotrophs from heterotrophs?

Accepted Answer

Autotrophs produce their own organic molecules from inorganic sources, while heterotrophs must consume organic molecules produced by other organisms.

Question 2

Which equation correctly represents the overall process of cellular respiration?

Accepted Answer

$$ C_6H_{12}O_6$ + 6O_2 ightarrow 6CO_2 + 6H_2O + 	ext{energy} $$

Question 3

During aerobic cellular respiration, which electron carriers are primarily involved in transporting electrons to the electron transport chain?

Accepted Answer

NADH and FADH$$_2$$

Question 4

Which phase of cellular respiration occurs in the cytoplasm of a eukaryotic cell?

Accepted Answer

Glycolysis

Question 5

What is the primary role of mitochondria in cellular respiration?

Accepted Answer

To generate ATP through oxidative phosphorylation

Question 6

Which of the following best explains why fermentation occurs in muscle cells during intense exercise?

Accepted Answer

Oxygen is limited, so cells use fermentation to regenerate NAD$$^+$$ and continue glycolysis.

Question 7

Which products are formed during alcoholic fermentation in yeast?

Accepted Answer

Ethanol, carbon dioxide, and ATP

Question 8

Which organisms are capable of performing photosynthesis?

Accepted Answer

Plants, algae, and some bacteria

Question 9

What is the overall chemical equation for photosynthesis?

Accepted Answer

$$ 6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6$ + 6O_2 $$

Question 10

Which part of the chloroplast is the site of the light-dependent reactions of photosynthesis?

Accepted Answer

Thylakoid membrane

Question 11

How does light energy drive the light reactions in photosynthesis?

Accepted Answer

By exciting electrons in chlorophyll, which are then transferred through an electron transport chain to produce ATP and NADPH

Question 12

Which of the following correctly compares the overall chemical equations for photosynthesis and cellular respiration?

Accepted Answer

Photosynthesis stores energy in glucose, while cellular respiration releases energy from glucose.

Question 13

Which statement best describes the structure of a DNA molecule?

Accepted Answer

A double helix composed of two antiparallel strands held together by hydrogen bonds between complementary bases

Question 14

During DNA replication, which enzyme is responsible for synthesizing the new DNA strand by adding nucleotides?

Accepted Answer

DNA polymerase

Question 15

Which process converts the information in mRNA into a sequence of amino acids in a protein?

Accepted Answer

Translation

Question 16

Given the mRNA sequence 5'-AUG GCU UAC-3', what is the corresponding amino acid sequence?

Accepted Answer

Met-Ala-Tyr

Question 17

Which of the following occurs during eukaryotic mRNA processing?

Accepted Answer

Addition of a 5' cap, splicing out introns, and addition of a poly-A tail

Question 18

Which RNA molecule carries amino acids to the ribosome during translation?

Accepted Answer

tRNA

Question 19

Which of the following is a similarity between photosynthesis and cellular respiration?

Accepted Answer

Both involve electron transport chains to generate ATP.

Question 20

A patient is diagnosed with a mitochondrial disorder that impairs the electron transport chain. Which cellular process would be most directly affected?

Accepted Answer

Oxidative phosphorylation and ATP production

Core Concepts in Cellular Respiration, Photosynthesis, and Molecular Genetics

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