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

Question 1

Which of the following best describes homeostasis in the human body?

Accepted Answer

The process by which the body maintains a stable internal environment despite changes in external conditions.

Question 2

A patient is experiencing dangerously low blood glucose levels. Which type of feedback loop is most likely to be activated to restore homeostasis?

Accepted Answer

Negative feedback loop

Question 3

Which of the following is NOT one of the four major tissue types in the human body?

Accepted Answer

Adipose tissue

Question 4

Which equation correctly represents the metabolism of glucose during cellular respiration?

Accepted Answer

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

Question 5

Which of the following best explains why water is considered a universal solvent?

Accepted Answer

Water's polarity allows it to dissolve many ionic and polar substances.

Question 6

Which type of chemical bond is least likely to dissolve in water?

Accepted Answer

Nonpolar covalent bond

Question 7

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

Accepted Answer

It will lose water and shrink.

Question 8

Which organelle is primarily responsible for ATP production in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 9

Which of the following best describes the difference between transcription and translation?

Accepted Answer

Transcription is the synthesis of mRNA from DNA, while translation is the synthesis of protein from mRNA.

Question 10

Which of the following is a correct statement about the sodium-potassium pump?

Accepted Answer

It moves 3 Na$$^+$$ ions out of the cell and 2 K$$^+$$ ions into the cell per ATP hydrolyzed.

Question 11

Which of the following is a function of the rough endoplasmic reticulum?

Accepted Answer

Synthesis of proteins for secretion or membrane insertion

Question 12

Which of the following best describes the Central Dogma of Biology?

Accepted Answer

DNA is transcribed into RNA, which is translated into protein.

Question 13

Which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 14

Which of the following is a correct example of a dehydration synthesis reaction?

Accepted Answer

Formation of a peptide bond between two amino acids with the release of water

Question 15

Which of the following best explains why enzymes are important in biological systems?

Accepted Answer

They lower the activation energy required for chemical reactions.

Question 16

Which of the following is a correct statement about isotonic solutions?

Accepted Answer

They have the same solute concentration as the cell, resulting in no net movement of water.

Question 17

Which of the following is a major function of the glycocalyx on the cell membrane?

Accepted Answer

Cell recognition and protection

Question 18

Which of the following best describes the difference between chromatin and chromosomes?

Accepted Answer

Chromatin is the loosely packed form of DNA, while chromosomes are the condensed form visible during cell division.

Question 19

Which of the following is a correct example of a positive feedback loop in the human body?

Accepted Answer

Release of oxytocin during childbirth to intensify uterine contractions

Comprehensive Study Guide: Foundations of Anatomy & Physiology

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