Test Bank Chapter 11 Metals In Biology Life Beyond Carbon

Chapter 11: Metals in biology: life beyond carbon

Test Bank

Type: multiple choice question

Title: Chapter 11 - Question 01

1) The zinc atom at the centre of the zinc finger motif is held in place by which one of the following?

a. Hydrogen bonds between the zinc atom and neighbouring amino acid side-chains

b. Disulfide bonds between the zinc atom and neighbouring amino acid side-chains.

c. Ionic bonds between the zinc atom and neighbouring amino acid side-chains.

d. Coordinate bonds between the zinc atom and neighbouring amino acid side-chains.

Type: multiple response question

Title: Chapter 11 - Question 02

2) Which of the following elements are classed as non-metals? Please select all that apply.

a. Sulfur

b. Iron

c. Calcium

d. Potassium

e. Carbon

Type: multiple choice question

Title: Chapter 11 - Question 03

3) The endoplasmic reticulum is involved in the sequestering of which of the following metals to help mediate its role in cell signaling?

a. Iron

b. Sodium

c. Potassium

d. Calcium

Type: multiple response question

Title: Chapter 11 - Question 04

4) Which of the following amino acids are most likely to participate the coordination of metals at the active site of an enzyme? Please select all that apply.

a. Valine

b. Proline

c. Histidine

d. Cysteine

e. Asparagine

Type: multiple response question

Title: Chapter 11 - Question 05

5) Which of the following statements correctly describe the behaviour of metals as components of metalloenzymes? Please select all that apply.

a. The metal ions in a metalloenzyme may be coordinated to a variable number of atoms during the course of a reaction

b. Metal ions in a metalloenzyme do not participate chemically in the reaction being catalyzed by the enzyme

c. Metals are often located in the active site of metalloenzymes

d. Metals in metalloenzymes may not obey the octet rule

Type: multiple choice question

Title: Chapter 11 - Question 06

6) Which metal forms part of chlorophyll, the light-harvesting pigment found in the chloroplasts of plants?

a. Zinc

b. Copper

c. Manganese

d. Magnesium

e. Iron

Type: true-false

Title: Chapter 11 - Question 07

7) A metalloprotein may contain atoms of more than one metallic element. True or false?

a. True

b. False

Type: multiple choice question

Title: Chapter 11 - Question 08

8) Elements whose characters fall partway between being a metal and a non-metal are called which of the following?

a. Semi-metals

b. Pseudo-metals

c. Hemi-metals

d. Metalloids

e. Demi-metals