Q: A solution has a pH of 3. Which statement is correct?

The solution is acidic and has a high concentration of $\text{H}^+$ ions

Question 1

Which of the following is NOT a requirement for something to be considered a living organism?

Accepted Answer

Ability to photosynthesize

Question 2

Which evidence best supports the theory that all life evolved from a common ancestor?

Accepted Answer

All living organisms use DNA as their genetic material

Question 3

Refer to the periodic table image for Oxygen. What does the number 8 represent?

Accepted Answer

Atomic number

Question 4

If the atomic mass of an isotope of Nitrogen is 17 and its atomic number is 7, how many neutrons does it have? Use the formula $	ext{Number of neutrons} = 	ext{Mass number} - 	ext{Atomic number}$.

Accepted Answer

10

Question 5

How many valence electrons does Sulfur (atomic number 16) have?

Accepted Answer

6

Question 6

Which bond type results in a near equal sharing of electrons between atoms?

Accepted Answer

Nonpolar covalent bond

Question 7

Water molecules exhibit both cohesion and adhesion. Which scenario best illustrates adhesion?

Accepted Answer

Water droplets sticking to a spider web

Question 8

A solution has a pH of 3. Which statement is correct?

Accepted Answer

The solution is acidic and has a high concentration of $	ext{H}^+$ ions

Question 9

Which of the following functional groups is a carboxyl group?

Accepted Answer

R-COOH

Question 10

Which type of fat is solid at room temperature and contains only single bonds between carbon atoms?

Accepted Answer

Saturated fat

Question 11

Which process involves the removal of water to form a polymer from monomers?

Accepted Answer

Dehydration synthesis

Question 12

Which macromolecule is associated with the monomer shown as a nucleotide (containing a phosphate, sugar, and nitrogenous base)?

Accepted Answer

Nucleic acid

Question 13

Which of the following best describes the fluid mosaic model of the cell membrane?

Accepted Answer

A flexible bilayer of phospholipids with embedded proteins that move laterally

Question 14

The sodium-potassium pump moves _____ sodium ions out of the cell and _____ potassium ions into the cell, using _____ molecule(s) of ATP.

Accepted Answer

3; 2; 1

Question 15

Which organelle is responsible for energy production in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 16

Which of the following is NOT a difference between prokaryotic and eukaryotic cells?

Accepted Answer

Both have mitochondria

Question 17

What is the formula to determine the change in free energy ($\Delta G$) of a reaction?

Accepted Answer

$\Delta G = \Delta H - T \Delta S$

Question 18

Which pathway is nonspontaneous and requires energy input: catabolic or anabolic?

Accepted Answer

Anabolic

Question 19

Why does a reaction proceed faster in the presence of an enzyme?

Accepted Answer

Enzymes lower the activation energy required for the reaction

Question 20

During cellular respiration, what is the role of NAD$^+$?

Accepted Answer

It acts as an electron carrier, accepting electrons during glycolysis and the Krebs cycle

General Biology Study Guide: Core Concepts, Macromolecules, Cell Structure, and Metabolism

Study Guide - Practice Questions

Study Guide - Flashcards