N/A — Exam Answers

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1
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Which part is circled?

A
unsaturated lipid
B
fatty acid
C
alcohol group
D
carboxyl group
2
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What is one of the primary functions of this food in the body?

A
providing structure to cell walls
B
building proteins
C
carrying genetic information
D
storing energy
4

Which statement is correct about this food?

A
It contains lipids, which give it a sweet taste.
B
It contains starch, which gives it a sweet taste.
C
It contains monosaccharides, the simplest carbohydrate.
D
It contains disaccharides, a complex type of lipid.
6

Which point(s) in the water cycle best illustrate(s) water changing to a gas, and which term(s) could describe it?

A
3 and 4; transpiration only
B
1; sublimation or evaporation
C
1 and 2; evaporation only
D
3; precipitation or transpiration
7

What will most likely happen if a person does not consume the minimum daily requirement of carbohydrates?

A
The body will break down galactose from the pancreas.
B
The body will break down glycogen from the liver.
C
The body will break down chitin from the bones.
D
The body will break down glucose from the blood.
8

Which statement best describes the relationship between proteins and nucleic acids?

A
Nucleic acids synthesize the amino acids for protein construction.
B
Proteins read the instructions that are contained in nucleic acids.
C
Nucleic acids provide the blueprint for the construction of proteins.
D
Proteins are composed of nucleic acids.
10

Which substance is a compound?

A
salt
B
oxygen
C
phosphorus
D
sulfur
11

Which would best be described as abiotic?

A
fish in a stream
B
water in a stream
C
roots in the soil
D
bacteria in the soil
12

Which is an example of a lipid?

A
cholesterol
B
glycerol
C
glycogen
D
fatty acid
13

Unsaturated and saturated lipids exhibit different characteristics based on their structures. Which characteristic is unique to saturated fats?

A
contains the maximum number of hydrogen atoms
B
consists of fatty acids and a carboxyl group
C
forms covalent, carbon-to-carbon bonds
D
is a liquid at room temperature
14

How were Redi’s and Pasteur’s experiments different?

A
Pasteur studied flies, but Redi tested meat.
B
Redi studied broth, but Pasteur tested meat.
C
Redi tested for microorganisms, but Pasteur studied larger organisms.
D
Pasteur tested for microorganisms, but Redi studied larger organisms.
15

People with diabetes often receive insulin injections. What effect does insulin have on the body?

A
It lowers blood-sugar levels.
B
It raises glucagon levels.
C
It raises blood-sugar levels.
D
It lowers glucagon levels.
16

Which is biotic?

A
sunlight
B
iron gate
C
wind
D
leaf
17

Many scientists are concerned that the Ogallala aquifer in the United States is being depleted at an alarming rate. What would most likely be a major effect of this aquifer running dry?

A
Farmers would have to water crops with salt water.
B
Most people in the United States would not have drinking water.
C
Many crops would die because irrigation water would be limited.
D
The water cycle would come to a halt in the area.
18

Which statement correctly describes the electrons in a water molecule?

A
Electrons are located inside the nucleus of the oxygen atoms.
B
Electrons are pulled closer to the hydrogen atoms.
C
Electrons are pulled closer to the oxygen atom.
D
Electrons are located inside the nucleus of the hydrogen atoms.
19

What is stored in carbon bonds?

A
energy
B
water
C
glucose
D
ATP
20

Which action would most likely increase the amount of carbon in the environment?

A
recycling paper and plastic instead of throwing it in the trash
B
choosing to burn coal to generate electricity
C
using energy-efficient appliances in place of older, traditional appliances
D
reusing shopping bags instead of using disposable plastic bags

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