Question 1

Which of the following is NOT a common characteristic shared by all living organisms?

Accepted Answer

Organisms are composed of atoms.

Question 2

Changing which of these subatomic particles alters the element of the atom?

Accepted Answer

Protons

Question 3

How many valence electrons are found in an electrically-neutral atom that is in group II of the periodic table?

Accepted Answer

$2$

Question 4

What property of water describes the 'stickiness' of water to itself?

Accepted Answer

Cohesion

Question 5

Which of the following best describes a bond in which electrons are shared equally?

Accepted Answer

Nonpolar covalent

Question 6

If energy (such as thermal energy) is being released by a reaction, what is happening to the entropy of the system?

Accepted Answer

The entropy is increasing

Question 7

Which of the following is an energy storage polysaccharide of glucose?

Accepted Answer

A starch molecule

Question 8

Which of the following is easily digested by humans?

Accepted Answer

Starch

Question 9

Which of the following is NOT a function of proteins?

Accepted Answer

Storage of genetic information

Question 10

Which of the following is used for long-term energy storage or padding in animals?

Accepted Answer

Triglyceride

Question 11

Which of the following is a characteristic of the amino acid shown in the image (with a nonpolar side chain)?

Accepted Answer

Hydrophobic

Question 12

Which of the following is NEVER involved in the formation of the tertiary structure of proteins?

Accepted Answer

Double bond

Question 13

Which of the following types of substances are hydrophobic?

Accepted Answer

Non-polar substances

Question 14

Which of the following best describes the process of photosynthesis?

Accepted Answer

Endergonic

Question 15

If a solution has a $[H^+] = 1 	imes 10^{-2}$, what is its pH value?

Accepted Answer

$2$

Question 16

Which bonds are broken during DNA denaturation?

Accepted Answer

Hydrogen bonds

Question 17

Which structure is used to synthesize ATP in eukaryotic cells?

Accepted Answer

Mitochondria

Question 18

A multi-step metabolic pathway often has a feedback loop, which generates a molecule that acts as the end product to inactivate the pathway creating the product. What is this type of regulation called?

Accepted Answer

Inhibitor

Question 19

If a reaction transforms the enzyme NAD$^+$ to NADH, was NAD$^+$ oxidized or reduced?

Accepted Answer

Reduced

Question 20

Imagine an electrochemical gradient with a high concentration of $H^+$ ions outside of the cell. If a channel opens for $H^+$, what direction will the ions move?

Accepted Answer

$H^+$ will enter the cell; No ATP needed

General Biology: Core Concepts and Practice Questions

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