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

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

50 verified answers1 views
1
Free Preview

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.
2
Free Preview

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.
7

Which characteristic best distinguishes quantitative data from qualitative data?

A
its validity
B
its repeatability
C
its ability to be graphed
D
its ability to be recorded
9

What is the next step in the process after a substrate enters the active site of an enzyme?

A
The chemical reaction occurs.
B
New substances called products are formed.
C
The enzyme and the substrate bind to form the enzyme-substrate complex.
D
The enzyme and the products bind to form the enzyme-products complex.
10

Some theories are developed from repeated testing of a single hypothesis. Cell theory, germ theory, and the theory of evolution all have developed from the testing of multiple related hypotheses. Which statement best explains why some theories develop this way?

A
A hypothesis tests many variables at once, which can lead to new hypotheses.
B
Multiple related hypotheses will become theories before a single hypothesis does.
C
Each scientist has used different wording when developing his or her hypothesis.
D
Each experiment reveals a different piece of information that is needed to develop the theory.
14

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.
15

Mitosis is important because it allows

A
new cells to replace old damaged cells.
B
new cells to repair old damaged cells.
C
old cells to self-repair when they become damaged.
D
existing cells to take over the function of damaged cells.
16

Drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal. What immediate response would the blood cells have in this condition?

A
Cells swell as water moves into them.
B
Cells swell as water moves out of them.
C
Cells shrivel as water moves out of them.
D
Cells shrivel as water moves into them.
17

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.
18

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.
19

Which organisms are prokaryotes?

A
archaea
B
fungi
C
protists
D
plants
20

Which is the most efficient way to avoid DNA mutations from UV radiation?

A
Avoid getting X-rays at the doctor’s office.
B
Avoid protective shields during X-rays.
C
Avoid UV radiation by wearing sunscreen.
D
Avoid UV radiation by using a tanning bed.

Did you find these answers helpful?