Q: Which equation correctly represents the hydrolysis of ATP?

$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{ADP} + \mathrm{P}_i + \text{energy}$

Q: A solution contains 10 grams of NaCl dissolved in 100 mL of water. What is the percent concentration of NaCl in the solution?

$\frac{10}{100} \times 100 = 10\%$

Question 1

Which of the following best describes the relationship between anatomy and physiology?

Accepted Answer

Anatomy studies the structure of body parts, while physiology studies their function.

Question 2

A patient is experiencing muscle weakness due to low potassium levels. Which of the following best explains why potassium is essential for muscle function?

Accepted Answer

Potassium is required for the generation of action potentials in muscle cells.

Question 3

Which equation correctly represents the hydrolysis of ATP?

Accepted Answer

$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} ightarrow \mathrm{ADP} + \mathrm{P}_i + 	ext{energy}$

Question 4

A solution contains 10 grams of NaCl dissolved in 100 mL of water. What is the percent concentration of NaCl in the solution?

Accepted Answer

$\frac{10}{100} 	imes 100 = 10\%$

Question 5

Which of the following best describes a positive feedback loop in the human body?

Accepted Answer

A process that amplifies the initial stimulus, such as oxytocin release during childbirth.

Question 6

Which of the following is a decomposition reaction?

Accepted Answer

$\mathrm{AB} \rightarrow \mathrm{A} + \mathrm{B}$

Question 7

A buffer system in the blood helps maintain pH by reacting with excess acids or bases. Which equation represents the bicarbonate buffer system?

Accepted Answer

$\mathrm{CO}_2 + \mathrm{H}_2\mathrm{O} \leftrightarrow \mathrm{H}_2\mathrm{CO}_3 \leftrightarrow \mathrm{H}^+ + \mathrm{HCO}_3^-$

Question 8

Which of the following statements about enzymes is correct?

Accepted Answer

Enzymes lower the activation energy required for chemical reactions.

Question 9

A cell is placed in a hypertonic solution. What will happen to the cell?

Accepted Answer

Water will leave the cell, causing it to shrink.

Question 10

Which organelle is responsible for producing ATP through cellular respiration?

Accepted Answer

Mitochondria

Question 11

Which of the following best describes the function of epithelial tissue?

Accepted Answer

It covers body surfaces and lines cavities, providing protection and absorption.

Question 12

Which of the following is a covalent bond?

Accepted Answer

A bond formed by sharing electrons between atoms.

Question 13

Which phase of mitosis is characterized by the alignment of chromosomes along the center of the cell?

Accepted Answer

Metaphase

Question 14

Which of the following is a function of connective tissue?

Accepted Answer

Support and binding of other tissues.

Question 15

Which of the following best describes passive transport across a cell membrane?

Accepted Answer

Movement of molecules from high to low concentration without energy input.

Question 16

Which of the following is a polysaccharide found in animals?

Accepted Answer

Glycogen

Question 17

Which of the following is a function of the plasma membrane?

Accepted Answer

Regulates the movement of substances into and out of the cell.

Question 18

Which of the following best describes apoptosis?

Accepted Answer

Programmed cell death that is essential for development and homeostasis.

Question 19

Which of the following is true about the structure of DNA and RNA?

Accepted Answer

DNA contains deoxyribose sugar, while RNA contains ribose sugar.

Question 20

A red blood cell placed in pure water will undergo which process?

Accepted Answer

Osmosis, causing the cell to swell and potentially burst.

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