$$\mathrm{UUA\text{-}GCA\text{-}AGC}$$

Question 1

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

Accepted Answer

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

Question 2

A patient presents with swelling in the popliteal region. Where is this swelling located?

Accepted Answer

Behind the knee

Question 3

Which two systems are primarily responsible for maintaining homeostasis?

Accepted Answer

Nervous and endocrine systems

Question 4

Which of the following is NOT one of the four major elements found in the human body?

Accepted Answer

Calcium

Question 5

A molecule of water ($$\mathrm{H_2O}) is $$considered polar because:

Accepted Answer

It has an uneven distribution of charge, with oxygen being more electronegative than hydrogen.

Question 6

Which equation correctly represents a synthesis reaction?

Accepted Answer

$$A + B \rightarrow AB$$

Question 7

A solution has a pH of 8. Which of the following best describes this solution?

Accepted Answer

It is basic (alkaline).

Question 8

Which of the following best describes the function of the sodium-potassium pump ($$\mathrm{Na^+}$$-$$\mathrm{K^+}$$ pump) in a cell?

Accepted Answer

It actively transports $$3\ \mathrm{Na^+}$$ out of the cell and $$2\ \mathrm{K^+}$$ into the cell using ATP.

Question 9

During DNA replication, a template strand with the sequence $$\mathrm{TAC\ TGC}$$ will produce which complementary new strand?

Accepted Answer

$$\mathrm{ATG\ ACG}$$

Question 10

Which organelle is responsible for producing ATP through cellular respiration?

Accepted Answer

Mitochondrion

Question 11

A cell placed in a hypotonic solution will:

Accepted Answer

Gain water and swell

Question 12

Which of the following best describes the process of transcription?

Accepted Answer

The synthesis of mRNA from a DNA template in the nucleus

Question 13

Which membrane type lines body cavities that do NOT open to the exterior and produces a lubricating fluid?

Accepted Answer

Serous membrane

Question 14

Which layer of the skin contains the fibrous protein keratin and is composed of keratinocytes?

Accepted Answer

Epidermis

Question 15

Which of the following is a function of the hypodermis?

Accepted Answer

Insulation and energy storage

Question 16

Which of the following best describes the function of an enzyme?

Accepted Answer

It speeds up chemical reactions by lowering activation energy.

Question 17

Which of the following is a correct complementary base pairing in DNA?

Accepted Answer

Adenine (A) pairs with Thymine (T)

Question 18

Which type of gland plays a primary role in thermoregulation and empties its contents directly onto the skin surface?

Accepted Answer

Eccrine sudoriferous gland

Question 19

A DNA sequence is $$\mathrm{AAT	ext{-}CGT	ext{-}TCG}. $$What is the corresponding mRNA sequence?

Accepted Answer

$$\mathrm{UUA	ext{-}GCA	ext{-}AGC}$$

Question 20

Which of the following best describes the difference between saturated and unsaturated fats?

Accepted Answer

Saturated fats have no double bonds between carbon atoms, while unsaturated fats have at least one double bond.

BIOL 2404 Exam 1 Review – Step-by-Step Study Guidance

Study Guide - Practice Questions