Q: Which equation correctly represents the overall cellular respiration reaction?

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

Question 1

Which of the following best describes a dehydration synthesis reaction in the formation of macromolecules?

Accepted Answer

A process where monomers are joined together by removing a water molecule.

Question 2

Which of the following is NOT a function of carbohydrates in living organisms?

Accepted Answer

Catalyzing chemical reactions

Question 3

A triglyceride molecule is composed of which of the following components?

Accepted Answer

Three fatty acids and one glycerol

Question 4

Which property of phospholipids makes them essential for cell membrane structure?

Accepted Answer

Their amphipathic nature, having both hydrophilic and hydrophobic regions

Question 5

Which of the following statements about protein structure is correct?

Accepted Answer

The tertiary structure is stabilized by interactions between R groups.

Question 6

How do DNA and RNA differ in their structure and function?

Accepted Answer

DNA is usually double-stranded, while RNA is usually single-stranded.

Question 7

Which organelle is responsible for ATP production in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 8

Which structure is found in plant cells but NOT in animal cells?

Accepted Answer

Chloroplasts

Question 9

Which of the following best describes the function of microfilaments in the cytoskeleton?

Accepted Answer

They maintain cell shape and are involved in cell movement.

Question 10

Which type of cell junction prevents the leakage of extracellular fluid between cells in animal tissues?

Accepted Answer

Tight junctions

Question 11

Which statement about passive transport is correct?

Accepted Answer

It relies on the diffusion of molecules down their concentration gradient.

Question 12

If a cell is placed in a hypertonic solution, what will happen to the cell?

Accepted Answer

It will lose water and shrink.

Question 13

Which process involves the movement of molecules from an area of lower concentration to an area of higher concentration, requiring energy?

Accepted Answer

Active transport

Question 14

Which law of thermodynamics states that energy cannot be created or destroyed?

Accepted Answer

First law of thermodynamics

Question 15

Which equation correctly represents the overall cellular respiration reaction?

Accepted Answer

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

Question 16

Which stage of cellular respiration produces the most ATP?

Accepted Answer

Electron transport chain

Question 17

Which of the following statements about enzymes is TRUE?

Accepted Answer

Enzymes speed up reactions by lowering the activation energy.

Question 18

Which of the following is a product of lactic acid fermentation?

Accepted Answer

Lactic acid

Question 19

Which molecule acts as the final electron acceptor in the electron transport chain during aerobic respiration?

Accepted Answer

Oxygen

Question 20

A patient is experiencing muscle fatigue after intense exercise. Which metabolic process is most likely responsible for the buildup of lactic acid in their muscles?

Accepted Answer

Lactic acid fermentation

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