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

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

Question 1

Which of the following structures is present in plant cells but not in animal cells, and is primarily responsible for maintaining cell shape and preventing excessive water uptake?

Accepted Answer

Cell wall

Question 2

A scientist observes a cell with no nucleus, circular DNA, and ribosomes. Which type of cell is being observed, and what is one key difference from eukaryotic cells?

Accepted Answer

Prokaryotic cell; it lacks membrane-bound organelles

Question 3

Which of the following best describes the function of the Golgi apparatus in a eukaryotic cell?

Accepted Answer

Modifying, sorting, and packaging proteins for secretion

Question 4

Which equation correctly represents the overall process of cellular respiration?

Accepted Answer

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

Question 5

Which of the following statements about enzymes is correct?

Accepted Answer

Enzymes lower the activation energy required for a reaction to proceed

Question 6

A red blood cell is placed in a hypotonic solution. What will most likely happen to the cell, and why?

Accepted Answer

It will swell and possibly burst due to water entering the cell by osmosis

Question 7

Which of the following best describes the difference between rough and smooth endoplasmic reticulum (ER)?

Accepted Answer

Rough ER has ribosomes attached and synthesizes proteins; smooth ER lacks ribosomes and synthesizes lipids

Question 8

Which process requires energy input from ATP to move molecules against their concentration gradient?

Accepted Answer

Active transport

Question 9

During which stage of cellular respiration is the majority of ATP produced, and where does this stage occur?

Accepted Answer

Electron transport chain; inner mitochondrial membrane

Question 10

Which of the following is a correct description of the relationship between photosynthesis and cellular respiration?

Accepted Answer

The products of photosynthesis are the reactants of cellular respiration

Question 11

Which of the following best describes the function of ATP in the cell?

Accepted Answer

It provides energy for cellular processes by releasing a phosphate group

Question 12

A poison blocks the active site of an enzyme. What is the most likely effect on the enzyme's activity?

Accepted Answer

The enzyme's activity will decrease or stop because substrates cannot bind

Question 13

Which of the following is a producer, and why?

Accepted Answer

A maple tree, because it uses sunlight to make glucose through photosynthesis

Question 14

Which of the following best describes facilitated diffusion?

Accepted Answer

Movement of molecules down their concentration gradient through a membrane protein, without energy input

Question 15

Which of the following equations correctly represents the overall process of photosynthesis?

Accepted Answer

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

Question 16

Which of the following correctly matches the stage of photosynthesis with its location and main product?

Accepted Answer

Light reactions; thylakoid membrane; ATP and NADPH

Question 17

Which process describes the movement of large particles into a cell by engulfing them in a vesicle?

Accepted Answer

Endocytosis

Question 18

During strenuous exercise, muscle cells may switch to fermentation. After which stage of cellular respiration does fermentation occur, and what is a key product?

Accepted Answer

After glycolysis; lactic acid

Question 19

Which of the following best describes the function of the cytoskeleton in eukaryotic cells?

Accepted Answer

It provides structural support and facilitates cell movement

Question 20

A cell is placed in a solution and does not change in size. What can you conclude about the solution, and why?

Accepted Answer

The solution is isotonic; water moves in and out at equal rates

Cell Structure, Function, and Energy Transformations: Study Guide for Exam 2

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