Q: Which equation correctly represents the relationship between pH and hydrogen ion concentration?

$$\text{pH} = -\log_{10} [\text{H}^+]$$

Q: Which equation represents the synthesis reaction of glucose and fructose to form sucrose?

$$\text{C}_6\text{H}_{12}\text{O}_6 + \text{C}_6\text{H}_{12}\text{O}_6 \rightarrow \text{C}_{12}\text{H}_{22}\text{O}_{11} + \text{H}_2\text{O}$$

Question 1

Which necessary life function is best illustrated by the plasma membrane regulating what enters and exits the cell?

Accepted Answer

Maintaining boundaries

Question 2

A patient is experiencing a rapid increase in body temperature after exposure to a hot environment. Which component of the biological control system first detects this change?

Accepted Answer

Sensor

Question 3

Which of the following is an example of positive feedback in the human body?

Accepted Answer

Blood clotting after injury

Question 4

If a person is lying in the anatomical position, which term describes the location of the heart relative to the lungs?

Accepted Answer

Medial

Question 5

Which abdominopelvic region contains the spleen?

Accepted Answer

Left hypochondriac

Question 6

Which internal cavity houses the brain?

Accepted Answer

Dorsal cavity

Question 7

Which equation correctly represents the relationship between pH and hydrogen ion concentration?

Accepted Answer

$$	ext{pH} = -\log_{10} [	ext{H}^+]$$

Question 8

Which of the following best describes the difference between isotopes of the same element?

Accepted Answer

Different number of neutrons

Question 9

Which type of chemical bond involves the sharing of electron pairs between atoms?

Accepted Answer

Covalent bond

Question 10

Which of the following is a colloid found in the human body?

Accepted Answer

Cytosol

Question 11

During exercise, the breakdown of ATP to ADP and $$	ext{P}_i is an $$example of which energy transformation?

Accepted Answer

Chemical to mechanical energy

Question 12

Which equation represents the synthesis reaction of glucose and fructose to form sucrose?

Accepted Answer

$$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 	ext{C}_6	ext{H}_{12}	ext{O}_6 ightarrow 	ext{C}_{12}	ext{H}_{22}	ext{O}_{11} + 	ext{H}_2	ext{O}$$

Question 13

Which body system is primarily responsible for producing movement and maintaining posture?

Accepted Answer

Muscular system

Question 14

Which of the following best describes the effect of increasing temperature on the rate of a chemical reaction in the body?

Accepted Answer

The rate increases

Question 15

A cell placed in a hypotonic solution will:

Accepted Answer

Swell due to water gain

Question 16

Which of the following is true about the plasma membrane?

Accepted Answer

It contains phospholipids and proteins

Question 17

If the DNA sequence is ATG, what is the complementary DNA strand?

Accepted Answer

TAC

Question 18

If the DNA sequence is ATG, what is the corresponding RNA strand produced during transcription?

Accepted Answer

UAC

Question 19

Which of the following best describes the central dogma of molecular biology?

Accepted Answer

DNA $$\rightarrow$$ RNA $$\rightarrow$$ Protein

Question 20

Which of the following is a function of enzymes in the body?

Accepted Answer

They speed up chemical reactions by lowering activation energy

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