AnswersLPS CR - Biology - ALab: Mouse Genetics (One Trait)

Lab: Mouse Genetics (One Trait) — Cumulative exam Answers

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1
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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
2
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A lab investigation involves using food coloring to track diffusion. Which action should students take to avoid damaging their clothing?

A
Wear old, stained clothing to the lab.
B
Wear a lab apron or lab coat over clothing.
C
Have plenty of paper towels for cleaning up spills.
D
Tuck sleeves into long safety gloves.
3

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.
4

Look at the picture below.What macromolecules make up most of the structure that is shown?

Question illustration
A
carbohydrates
B
lipids
C
nucleic acids
D
proteins
5

Suzanne has type A– blood. Which blood type could she receive in a blood transfusion?

A
A+
B
O–
C
O+
D
B–
6

Which best describes the relationship between DNA, genes, and chromosomes?

A
DNA are segments of genes; the genes form tight coils called chromosomes.
B
Genes are segments of DNA; the DNA forms tight coils called chromosomes.
C
Chromosomes are segments of DNA; the DNA forms tight coils called genes.
D
Genes are segments of chromosomes; the chromosomes form tight coils called DNA.
7

Which statement correctly distinguishes photosynthesis and respiration?

A
Photosynthesis occurs in animal cells and not plant cells.
B
Cellular respiration occurs in animal cells and not plant cells.
C
Photosynthesis uses chemical energy as energy source, and cell respiration uses light energy.
D
Photosynthesis uses light as energy source, and cell respiration uses chemical energy.
8

The diagram below shows the energy conversions of the Krebs cycle, which is part of cellular respiration. The U-shaped arrows that show changes for NAD+, FAD, and ADP molecules represent energy conversions. From each glucose molecule, two acetyl-CoA molecules are made for the Krebs cycle.How many energy conversions occur when both acetyl-CoA molecules go through the Krebs cycle?

Question illustration
A
5
B
6
C
10
D
12
9

Kai looks at a photo of herself with her parents. She notices that, while her features are similar to her parents’ features, they do not appear to be identical. Which explains why this is the case?

A
Their DNA is made of different codon sequences.
B
Their DNA is made of four different bases.
C
Kai inherited more proteins from one parent than the other.
D
Kai inherited different amino acids from either of her parents.
10

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
11

Which statement best describes the molecular structure of protein, along with one of the functions of proteins?

A
It is a straight chain hydrocarbon that can help fight disease.
B
It is a complex, folded chain that helps regulate cell processes.
C
It is a simple carbon, hydrogen, and oxygen molecule that creates movement.
D
It is a chain of nucleotides, and forms muscle, bone, and ligaments.
12

What is the purpose of controlling the environment when testing a hypothesis?

A
It allows the scientist to determine the effect of the changed variable.
B
It allows samples and organisms to be tested under comfortable conditions.
C
It makes it easier for the scientist to perform the steps of the experiment.
D
It ensures that the scientist is undisturbed while performing the experiment.
13

What observation led researchers to propose that chloroplasts evolved from cyanobacteria?

A
Both produce proteins.
B
Both contain mitochondria.
C
Both provide structure to cells.
D
Both perform photosynthesis.
14

During transcription, what happens to the RNA polymerase if a repressor protein attaches to the operator?

A
It begins transcription.
B
It begins translation.
C
It cannot attach to enzyme 1.
D
It cannot attach to the promoter.
15

Which statement best describes how Watson and Crick's model used other scientists' work to create a model of DNA?

A
They used Chargaff's rule to determine that it contains ribose sugar.
B
They used Franklin's photo to determine that DNA was a double helix.
C
They used Levene's work to determine the number of base pairs in each strand.
D
They used Nirenberg and Matthei's studies to determine that DNA is made of nucleotides.
16

Which statement describes the F1 generation of a Mendelian monohybrid cross between two true-breeding parents?

A
Only the dominant trait is visible in the F1 generation.
B
Only the recessive trait is visible in the F1 generation.
C
Neither the dominant nor recessive trait is visible in the F1 generation.
D
Both the dominant and recessive traits are visible in the F1 generation.
17

A news article discussed a genetically engineered medicine that is used to enhance the production of antibodies that are used against disease. Which medicine can this article be about?

A
insulin
B
flu shot
C
penicillin
D
human growth hormone
18

Which statement best distinguishes plant cells and animal cells?

A
There are more ribosomes in animal cells than in plant cells.
B
Plant cells have more lysosomes than animal cells have.
C
Plant cells have large vacuoles, and animal cells do not.
D
The position of the nucleus in the cells is different in plants and animals.
19

Which statement best distinguishes plant cells and animal cells?

A
There are more ribosomes in animal cells than in plant cells.
B
Plant cells have more lysosomes than animal cells have.
C
Plant cells have large vacuoles, and animal cells do not.
D
The position of the nucleus in the cells is different in plants and animals.
20

What is the safest way to carry a microscope?

A
One student should hold onto the base and one student should grasp the arm.
B
Two students should hold opposite sides of the microscope base.
C
Place one hand under the base and grasp the arm with the other hand.
D
Place both hands securely around the base of the microscope.

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