Anatomy And Physiology 6th Edition By Elaine N. Marieb - Test Bank

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

1) Which of the following would be regarded as an organic molecule? A) H2O B) NaOH C) NaCl D) CH4

Answer: D Explanation: A) B) C) D)

2) The basic structural material of the body consists of ________. A) nucleic acids B) proteins C) lipids D) carbohydrates

Answer: B Explanation: A) B) C) D)

3) The genetic information is coded in DNA by the ________. A) sequence of the nucleotides

B) three-dimensional structure of the double helix

C) arrangement of the histones

D) regular alteration of sugar and phosphate molecules

Answer: A Explanation: A) B) C) D)

4) The single most abundant protein in the body is ________. A) glucose B) DNA C) collagen D) hemoglobin

Answer: C Explanation: A) B) C) D)

1)

2)

3)

4)

15)

5) Phospholipids make up most of the lipid part of the cell membrane. Since water exists on both the outside and inside of a cell, which of the following phospholipid arrangements makes the most sense?

A) two back-to-back phospholipid layers with the non-polar tails facing out on both sides

B) a single layer of phospholipids with the polar heads facing inside the cell

C) a single layer of phospholipids with the polar heads facing outside the cell

D) two back-to-back phospholipid layers with the polar heads facing out on both sides

Answer: D Explanation: A) B) C) D)

6) Amino acids joining together to make a peptide is a good example of a(n) ________ reaction. A) decomposition B) exchange C) synthesis D) reversible

Answer: C Explanation: A) B) C) D)

7) Which of the following is an example of a suspension? A) salt water B) cytosol C) blood D) rubbing alcohol

Answer: C Explanation: A) B) C) D)

8) Sucrose is a ________. A) polysaccharide B) triglyceride

C) disaccharide D) monosaccharide

Answer: C Explanation: A) B) C) D)

9) In a DNA molecule, the phosphate serves ________. A) to hold the molecular backbone together C) as nucleotides Answer: A Explanation: A) B) C) D)

B) to bind the sugars to their bases

D) as a code

6)

7)

8)

9)

210) How many phosphates would AMP have attached to it? A) one B) two C) none D) three

Answer: A Explanation: A) B) C) D)

11) Which of the following is the major positive ion outside cells? A) hydrogen B) sodium C) potassium D) magnesium

Answer: B Explanation: A) B) C) D)

12) Carbohydrates are stored in the liver and skeletal muscles in the form of ________. A) triglycerides B) cholesterol C) glucose D) glycogen

Answer: D Explanation: A) B) C) D)

13) An acid with a pH of 6 has ________ hydrogen ions than pure water. A) 100-fold fewer B) 10-fold fewer C) 100-fold more D) 10-fold more

Answer: D Explanation: A) B) C) D)

10)

11)

12)

13)

14) Select the correct statement about isotopes. 14)

A) Isotopes occur only in the heavier elements.

B) All the isotopes of an element have the same number of neutrons but differing numbers of electrons.

C) Isotopes of the same element have the same atomic number but differ in their mass number.

D) All the isotopes of an element are radioactive.

Answer: C Explanation: A) B) C) D)