AnswersBiology AUnit Test

Unit Test — Cumulative exam Answers

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Pea plants can have yellow seeds or green seeds. Which conclusion about the meaning of Y is correct if the allele combination Yy is for yellow seeds?

A
yellow and dominant
B
green and recessive
C
yellow and recessive
D
green and dominant
42
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Which factor can decrease the rate of a chemical reaction?

A
low activation energy
B
high pressure
C
low temperature
D
high concentration of enzyme
43

If the endoplasmic reticulum were removed from the cell, which organelle would not be able to function properly, and why?

A
mitochondria, because they rely on the ER as an energy source
B
ribosomes, because they receive proteins made by the ER
C
Golgi apparatus, because it packages proteins received from the ER
D
cytoplasm, because it relies on the ER for structural support
44

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

A
Proteins read the instructions that are contained in nucleic acids.
B
Nucleic acids synthesize the amino acids for protein construction.
C
Nucleic acids provide the blueprint for the construction of proteins.
D
Proteins are composed of nucleic acids.
45

How does the cell wall protect a plant cell?

A
The cell wall protects the cell by providing support and maintaining the cell's shape.
B
The cell wall protects the cell by storing food so the plant doesn't run out.
C
The cell wall is thin and flexible, which allows the cell to be moved without harming the organelles.
D
The cell wall is on the inside of the cell and serves to contain the contents of the cell.
46

If a scientist wanted to follow Mendel’s experiment with a different kind of plant, which type of plant would she examine?

A
A plant that cannot self-pollinate.
B
A plant that has only recessive alleles.
C
A plant that has three alleles for a trait.
D
A plant that has only two alleles for a trait.
47

During which process is ethanol produced?

A
lactic acid fermentation
B
alcohol fermentation
C
citric acid cycle
D
electron transport chain
48

During which stage of cellular respiration is glucose broken down into two molecules of pyruvic acid?

A
electron transport chain
B
glycolysis
C
Krebs cycle
D
acetyl CoA formation
49

Which characteristic of life best describes the life cycle of a frog?

A
having cells
B
using energy
C
responding to the environment
D
growing and developing
50

In which process does RNA polymerase help synthesize mRNA from a DNA template?

A
transcription
B
translation
C
translocation
D
transportation

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