Question 1

Which of the following is NOT a property of life?

Accepted Answer

Responding to stimuli

Question 2

A scientist wants to test whether a certain sweetener is toxic to a group of mice. Which of the following would be the most appropriate control group?

Accepted Answer

A similar group of mice with the same food and surroundings but not the sweetener

Question 3

In the experiment testing sweetener toxicity in mice, which is the independent variable?

Accepted Answer

The amount of sweetener

Question 4

Which of the following best describes the dependent variable in the sweetener toxicity experiment?

Accepted Answer

The level of toxicity

Question 5

Which element has 6 electrons in its outermost electron shell?

Accepted Answer

Sulfur ($$S)$$

Question 6

Which element will form a cation in the presence of chloride?

Accepted Answer

Lithium ($$Li)$$

Question 7

Which element has a full valence shell in its outermost orbital?

Accepted Answer

Neon ($$Ne)$$

Question 8

When two atoms in a covalent bond have the same electronegativity, what type of bond is formed?

Accepted Answer

A nonpolar covalent bond

Question 9

Which of the following is true regarding hydrogen bonds?

Accepted Answer

Hydrogen bonds are weaker than polar covalent bonds

Question 10

Which of the following compounds has ionic bonds?

Accepted Answer

$$NaCl$$

Question 11

Which of the following is a true statement about chemical bonds?

Accepted Answer

Substances held together by covalent bonds are called molecules

Question 12

Which factor is used to determine if a bond is considered ionic?

Accepted Answer

Electronegativity

Question 13

Carbon dioxide ($$CO_2) is a $$molecule formed by sharing electrons. Using the periodic table, how many electrons do Carbon and Oxygen have in their outer shells?

Accepted Answer

Carbon has 4 electrons and Oxygen has 6 electrons

Question 14

How many electrons are shared between Carbon and Oxygen to form the covalent bonds in $$CO_2$$?

Accepted Answer

4

Question 15

How many covalent bonds are formed between Carbon and an atom of Oxygen in a $$CO_2$$ molecule?

Accepted Answer

2

Question 16

Which of the following covalent bonds can be found in a protein molecule?

Accepted Answer

Peptide bond

Question 17

Which functional group is circled as '1' in the protein diagram?

Accepted Answer

Amino group

Question 18

Hydrogen bonds can be formed between which of the functional groups to form secondary protein structures?

Accepted Answer

3 and 4

Question 19

Which of the following best describes the secondary structure of DNA?

Accepted Answer

Double antiparallel helical strands

Question 20

Which of the following statements about nitrogenous bases is INCORRECT?

Accepted Answer

Guanine base pairs with cytosine with 3 ionic bonds

General Biology: Properties of Life, Chemical Bonds, and Biological Macromolecules

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