AnswersBiologyThe Building Blocks of Life

The Building Blocks of Life — Test Answers

25 verified answers1 views
1
Free Preview

Based on this information, which is the best approximation of the amount of water on the planet that is available for animals to drink?

A
3 percent
B
75 percent
C
1 percent
D
10 percent
2
Free Preview

Why do phospholipids form a bilayer in water?

A
The phosphate portions repel each other.
B
The hydrophilic and hydrophobic parts attract each other.
C
The phosphate portions attract water, and the lipid portions repel water.
D
The lipid portions attract water, and the phosphate portions repel water.
3

A scientist is examining the function of macromolecules in a cell. She notices that movement of large molecules into and out of the cell is disrupted when she damages one specific type of macromolecule. Which macromolecule has she most likely damaged?

A
a nucleic acid
B
a protein
C
a steroid
D
a carbohydrate
4

Which sequence of processes transports water from the atmosphere to the ocean and then back into a cloud?

A
evaporation right arrow precipitation right arrow condensation
B
precipitation right arrow condensation right arrow transpiration
C
evaporation right arrow condensation right arrow sublimation
D
precipitation right arrow evaporation right arrow condensation
5

Which characteristic best distinguishes runoff and infiltration?

A
Runoff occurs during floods and infiltration occurs during drought.
B
Runoff occurs over land and infiltration occurs underground.
C
Runoff involves condensation and infiltration involves evaporation.
D
Runoff describes water movement and infiltration describes water storage.
6

What would most likely happen to a person who is not getting enough essential amino acids in his or her diet?

A
The formation of proteins would increase.
B
Muscle growth and repair would be limited.
C
Stored protein would break down.
D
The body would synthesize the amino acids.
7

A scientist is examining the role of an element found in fats and carbohydrates of living things. This element makes up 65 percent of human body mass. Which statement describes the element he is studying?

A
He is studying nitrogen, which can also be found in proteins.
B
He is studying oxygen, which is the most abundant element in the atmosphere.
C
He is studying oxygen, which can also be found in proteins.
D
He is studying nitrogen, which is the most abundant element in the atmosphere.
8

A scientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas. Which group of statements best describe all of the materials he is using in the investigation?

A
They are each made of matter. Some are compounds made of one type of element. Some are pure atoms.
B
They are each compounds. Each of the compounds is made of atoms. All of the atoms are made of matter.
C
They are all elements. Some contain molecules of the same type of atom. Some contain different types of atoms.
D
They are each made of matter. Some are compounds and some are elements. They all contain atoms.
9

Which statement best describes the relationship between photosynthesis and cellular respiration?

A
Photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon back into the atmosphere.
B
Only plants perform photosynthesis, and only animals perform cellular respiration.
C
Photosynthesis is part of the carbon cycle, and cellular respiration is not.
D
Photosynthesis releases carbon into the atmosphere, and cellular respiration removes carbon from the atmosphere.
10

What is the general term for any carbohydrate monomer?

A
fructose
B
glucose
C
polysaccharide
D
monosaccharide
11

Hemophilia is a disease that causes uncontrollable bleeding. If a father has it, all of his daughters will be carriers of the disease. Which macromolecule is involved in how hemophilia is passed from parents to their children?

A
lipid
B
carbohydrate
C
nucleic acid
D
protein
12

Which type of molecule that can be found in living things lacks carbon atoms?

A
fat
B
protein
C
water
D
carbohydrate
13

In what form is carbon found in the atmosphere?

A
cap h sub 2 cap o
B
ATP
C
cap c sub 6 cap h sub 12 cap o sub 6
D
CO sub 2
14

What would most likely happen if a person increased the amount of saturated fat in his or her diet?

A
The person's risk of cardiovascular disease would increase.
B
The person’s good cholesterol would increase.
C
The person's risk of cardiovascular disease would decrease.
D
The person's bad cholesterol would decrease.
15

Where is the greatest amount of the world’s carbon found?

A
plants and animals
B
ocean
C
seafloor sediments
D
atmosphere
16

Which is released during the formation of a peptide bond?

A
an amino acid
B
a water molecule
C
an amino group
D
a five-carbon sugar
17

Which carbohydrate can be used by the body as an immediate source of energy?

A
glycogen
B
glucose
C
chitin
D
cellulose
18

Responding to the environment is a characteristic of life best shown by which example?

A
a human shivers on a cold day
B
a cat licks its paws
C
a horse trots in a field
D
a dog swims in a pond
19

Which type of protein will fight disease?

A
insulin
B
ligaments
C
genes
D
antibodies
20

Organisms may contain up to five levels of organization within their bodies. Which level of organization is best represented by the liver?

A
organ
B
tissue
C
organ system
D
organism

Did you find these answers helpful?

More from this Course

Quiz
25 verified answers

Test

practice test
16 verified answers

Practice Test

Quiz
50 verified answers

Exam