AnswersNY-Life Science Biology Term 1 HillcrestUnit Test

Unit Test — Unit test Answers

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The graph below compares the rates of reaction of a burning candle and an exploding firework.What can you conclude from the graph?

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A
The reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn.
B
The reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn.
C
The reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn.
D
The reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn.
2
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The table shows the energy that is stored in three types of organic molecules.Energy Storage in HumansWhat is the best conclusion based on this data?

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A
Blood is a primary location for energy storage.
B
Fat molecules contain more energy-containing bonds than simple sugars.
C
A gram of glycogen has twice as much energy as a gram of fat.
D
The human body stores approximately 1,000 kcal of glucose.
3

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

A
glucose
B
cellulose
C
chitin
D
glycogen
4

The diagram shows a type of lipid.Which type of lipid is shown?

Question illustration
A
a saturated phospholipid
B
a saturated triglyceride
C
an unsaturated phospholipid
D
an unsaturated triglyceride
5

What would most likely happen if an error occurred when RNA was receiving coding information?

A
Proteins would be formed incorrectly.
B
DNA would form incorrectly.
C
RNA could not form a correct blueprint.
D
The incorrect amino acid would form.
6

What is a difference between starch and glycogen?

A
Starch stores energy, and glycogen provides structural support.
B
Starch is found in plants, and glycogen is found in animals.
C
Starch is composed of fructose, and glycogen is composed of glucose.
D
Starch is a monomer, and glycogen is a polymer.
7

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

A
The body would synthesize the amino acids.
B
Muscle growth and repair would be limited.
C
Stored protein would break down.
D
The formation of proteins would increase.
8

Which statement best describes the relationship between activation energy and rate of reaction?

A
Increasing the activation energy can increase the rate of a reaction.
B
Reducing the activation energy can increase the rate of a reaction.
C
Increasing the reaction energy does not alter the rate of reaction.
D
Reducing the activation energy can decrease the rate of a reaction.
9

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

A
tissue
B
organ
C
organism
D
organ system
10

Organisms contain different levels of organization within their bodies. Arachnoidiscus ehrenbergi, pictured below, is a single-celled organism that is part of the group of algae known as diatoms. Photo by Gordon T. Taylor, courtesy of the NOAAWhich level of organization is seen in both Arachnoidiscus ehrenbergi and the human stomach?

Question illustration
A
cell
B
tissue
C
organ
D
organ system
11

Which type of protein will fight disease?

A
insulin
B
antibodies
C
ligaments
D
genes
12

Which will increase the rate of a chemical reaction?

A
adding a catalyst
B
decreasing the pressure
C
decreasing the temperature
D
removing a catalyst
13

The heart is an example of which level of organization within an organism?

A
cell
B
organ
C
tissue
D
organ system
14

After school, Kai feels hungry and tired. He finds some sugar cookies in the cabinet and finishes the whole package. Which statements best describe the role of glucagon and insulin in this scenario?

A
Glucagon was secreted by his pancreas before he ate the cookies because his blood glucose was low. Insulin was secreted after he ate the cookies because his blood glucose was high.
B
Insulin was secreted by his pancreas before he ate the cookies because his blood glucose was low. Glucagon was secreted after he ate the cookies because his blood glucose was high.
C
Glucagon was secreted by his pancreas before he ate the cookies because his blood glucose was low. After he ate, insulin from the cookies increased his blood sugar levels.
D
Insulin was secreted by his pancreas before he ate the cookies because his blood glucose was low. After he ate, glucagon from the cookies increased his blood sugar levels.
15

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.
16

What is the general term for any carbohydrate monomer?

A
glucose
B
polysaccharide
C
monosaccharide
D
fructose
17

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

A
a human shivers on a cold day
B
a horse trots in a field
C
a dog swims in a pond
D
a cat licks its paws
18

Which statement about enzymes is true?

A
An enzyme functions to decrease the rate of a chemical reaction.
B
Enzymes are proteins that function as catalysts in nonliving things.
C
Each enzyme can catalyze many different biochemical reactions.
D
Enzymes and substrates fit together like a lock and key.
19

Which is released during the formation of a peptide bond?

A
a five-carbon sugar
B
an amino group
C
an amino acid
D
a water molecule
20

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

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