Exam Review Quiz Questions

Question 1

What types of atoms are part of an organic molecule?

Answer 1

Carbon and hydrogen

Question 2

DNA is composed of building blocks called _____.

Answer 2

Nucleotides/nucleic acids

Question 3

Which of the following is a lipid?
A)cellulose
B)ribonucleic acid
C)cholesterol
D)sucrose

Answer 3

C) cholesterol
Ribonucleic acid is a nucleotide, sucrose is a carbohydrate, and cellulose is too

Question 4

How do prokaryotic and eukaryotic cells differ?
A)Prokaryotic cells do not have a nucleus.
B)Eukaryotic cells are not surrounded by a cell wall.
C)Prokaryotic cells do not contain DNA.
C)Prokaryotic cells are not surrounded by a plasma membrane.

Answer 4

A) Prokaryotic cells do not have a nucleus
Bacteria have a cell wall, all cells contain DNA, and all cells have a plasma membrane

Question 5

Which of these is a prokaryotic organism?
A) green algae

B) goldfish

C) E. coli bacteria

D) amoeba

Answer 5

C) E.coli bacteria
Only bacteria are prokaryotic

Question 6

True or false: White sugar is a carbohydrate.

Answer 6

True

Question 7

Which of the following is a micronutrient?
A)water

B)carbohydrate

C)vitamin C

D)protein

Answer 7

Vitamin C
Vitamins, minerals, and antioxidants are micronutrients

Question 8

Which food is rich in complex carbohydrates?

Answer 8

Pasta

Question 9

Which food is most likely to contain all essential amino acids?

corn

rice

beef

carrots

Answer 9

C) beef
Beef is a source of protein, and amino acids are the building blocks of proteins
Corn, rice, and carrots are all carbohydrates

Question 10

Which food components help your body build muscle mass?

amino acids

vitamins and minerals

sugars

lipids

Answer 10

A) amino acids
Amino acids are the monomers of proteins, which build muscle mass

Question 11

Which molecule powers the chemical work within cells?

NADPH

CO2

ATP

NAD+

Answer 11

C) ATP
CO2 is carbon dioxide, NAD+ is an electron carrier

Question 12

Why isn’t the Body Mass Index (BMI) a perfectly reliable way to estimate your health?

It considers your height but not your weight.

It doesn’t account for differences in muscle mass between individuals.

It considers your weight but not your height.

Body fat estimates are not correlated with the risk of illness and death.

Answer 12

B) It doesn’t account for differences in muscle mass

Question 13

Most enzymes are _____

carbohydrates

lipids

proteins

minerals

Answer 13

Proteins

Question 14

Enzymes work by _____.

adding energy to a reaction

adding a phosphate group to a reactant

reducing activation energy

increasing the potential energy difference between reactant and product

Answer 14

C) Reducing activation energy
The first step of the process requires that the energy barrier be crossed

Question 15

An enzyme is _____.

is a inorganic catalyst

can bind to nearly any molecule

is an organic catalyst

is a source of energy for endergonic reactions

Answer 15

C) is an organic catalyst
Enzymes are made up of amino acids

Question 16

Lactose is a disaccharide found in milk. What makes some people “lactose intolerant” as adults?

Answer 16

Lactose-intolerant people don’t produce adequate amounts of lactase.
Lactase is the enzyme that breaks down lactose

Question 17

What type of metabolic pathway requires oxygen?

Answer 17

Aerobic

Question 18

During which process would ethanol and carbon dioxide be released from the cell?

Answer 18

Alcohol fermentation

Question 19

Which of the following statements about the greenhouse effect is true?

The greenhouse effect results from the presence of oxygen in the atmosphere.

The greenhouse effect is a dangerous phenomenon that should be stopped as soon as possible.

Global warming is likely the result of a lessening of the greenhouse effect.

Most life on Earth relies upon the hospitable temperatures resulting from the greenhouse effect.

Answer 19

D) Most life on earth relies on the temperatures from the greenhouse effect

Question 20

What is the most abundant greenhouse gas produced when coal is burned?

Answer 20

Carbon dioxide

Question 21

What are the basic components required for photosynthesis?

Answer 21

water, light, carbon dioxide