AnswersGA-GSE Biology ALipids

Lipids — Unit test Answers

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1
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Which food contains mostly polysaccharides?

A
cake
B
sugar
C
berries
D
pasta
2
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What type of lipid is estrogen?

A
steroid
B
phospholipid
C
triglyceride
D
wax
3

Which component is affected when a catalyst is added to a chemical reaction?

A
the amount of substrate
B
the activation energy
C
the amount of product
D
the concentration of reactants
4

Jun is at risk for heart disease so he is watching his cholesterol levels. He refers to the table below to choose what is best for his health.Comparison Chart of Fats Food (14 g)Saturated Fat (g)Monounsaturated Fat (g)Polyunsaturated Fat (g)Butter7.93.70.5Cream cheese3.01.50.2Margarine1.65.43.4Peanut butter1.44.02.6Which snack is the healthiest option for Jun, based on the data in the table?

A
bagel with butter
B
bagel with cream cheese
C
bagel with margarine
D
bagel with peanut butter
5

In which part of the body is glycogen stored?

A
liver
B
blood
C
pancreas
D
exoskeleton
6

Where does a peptide bond form?

A
between the five-carbon sugar of one nucleotide and the phosphate group of another nucleotide
B
between the R group of one amino acid and the carboxyl group of another amino acid
C
between the amino group of one amino acid and the carboxyl group of another amino acid
D
between the nitrogenous base of one nucleotide and the phosphate group of another nucleotide
7

The diagram shows a straight chain of glucose molecules. Which carbohydrate is shown above?

Question illustration
A
fructose
B
sucrose
C
galactose
D
starch
8

Lactose (milk sugar) is a carbohydrate that is formed by combining galactose and glucose. Which term best describes this molecule?

A
monosaccharide
B
disaccharide
C
monomer
D
starch
9

The diagram shows a simple lipid.What type of lipid is shown?

Question illustration
A
saturated
B
unsaturated
C
phospholipid
D
triglyceride
10

How does a catalyst influence a chemical reaction?

A
It speeds up or slows down a chemical reaction by direct participation.
B
It reacts with products to increase the concentration of reactants.
C
It decreases the amount of energy necessary for the reaction to proceed.
D
It increases the total amount of products formed.
11

What would most likely happen to plants if they did not have a waxy outer coating?

A
They would store more water in their leaves.
B
They would photosynthesize at a faster rate.
C
They would store more sugars in their leaves.
D
They would be harmed by insects and UV radiation.
12

Which statement describes how enzymes and substrates are related?

A
The enzyme influences the speed of change from substrate to product.
B
Enzymes are released as substrates in a chemical reaction.
C
An enzyme is a special kind of substrate in a chemical reaction.
D
Substrates combine with enzymes to form reactants.
13

What scientific knowledge about macromolecules is a direct result of Gerardus Johnannes Mulder’s 1838 discovery?

A
All proteins contain carbon, hydrogen, oxygen, and nitrogen.
B
All carbohydrates contain carbon, hydrogen, and oxygen.
C
Nucleic acids are polymers with nucleotide monomers.
D
The helical structure of DNA is essential for protein production.
14

Which reaction is exothermic?

A
a reaction that absorbs energy from the environment
B
a reaction that requires an activation energy
C
a reaction that releases energy into the environment
D
a reaction that does not involve a change in energy
15

A Venn diagram can be used to compare and contrast nucleic acids.Which characteristic would be correctly found in B?

Question illustration
A
contain ribose
B
consist of two strands
C
made of nucleotides
D
have an R group

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