AnswersPMHS Biology I Q2Cell Differentiation and Specialization

Cell Differentiation and Specialization — Unit test Answers

0 verified answers
1
Free Preview

Which process produces clones?

A
asexual reproduction
B
sexual reproduction
C
chromosome duplication
D
gamete formation
2
Free Preview

A poison placed on the tips of darts by natives of the Amazon rainforest paralyzes prey such as small mammals. Which of the prey's cells are most likely affected by the poison?

A
muscle cells
B
epithelial cells
C
red blood cells
D
white blood cells
3

The diagram shows a phase of mitosis.Which does the letter A represent in the diagram?

Question illustration
A
centriole
B
chromosome
C
centromere
D
spindle
4

In the study of cancer, researchers have used different types of cells, different environmental conditions, and different experimental designs. But, all researchers have arrived at the same conclusion. What does this say about the conclusion?

A
It is well supported.
B
It is weakly supported.
C
It is inconclusive.
D
It is refuted.
5

Which correctly describes crossing over?

A
the process whereby non-sister chromatids exchange genetic material
B
the process whereby homologous chromosomes are pulled to opposite poles of the cell
C
the process whereby sister chromatids are pulled to opposite poles of the cell
D
the process whereby homologous chromosome pairs align randomly along the metaphase plate
6

The illustration below shows the steps of meiosis I. What is the step that is labeled D?

Question illustration
A
metaphase I
B
metaphase II
C
telophase II
D
telophase I
7

Which best describes the processes of mitosis and meiosis?

A
Cells in mitosis go through the PMAT stages twice to produce diploid cells while cells in meiosis go through PMAT stages once to produce haploid cells.
B
Cells in mitosis and meiosis go through the PMAT stages twice to produce haploid cells.
C
Cells in mitosis go through the PMAT stages once to produce diploid cells while cells in meiosis go through PMAT stages twice to produce haploid cells.
D
Cells in mitosis and meiosis go through the PMAT stages once to produce diploid cells.
8

How has the study of mitosis affected scientists’ knowledge of cancer?

A
It led to a study of how to induce cancer cells to divide more rapidly.
B
It led to an understanding of how cancer cells divide so rapidly.
C
It led to the development of contact-inhibition regulators.
D
It led to the discovery of how to prevent cancer cells from dividing.
9

Which specialized cells are responsible for transmitting messages throughout the body?

A
neurons
B
epithelial cells
C
blood cells
D
muscle cells
10

Which specialized cell type would be found lining the trachea, the part of the body that brings air to the lungs?

A
blood
B
epithelial cells
C
neuron
D
muscle cells
11

How does interphase prepare cells for mitosis?

A
rest prior to cell division
B
growth of cell and replication of DNA
C
dissolution of nucleus and cell membrane
D
division of cytoplasm
12

It is crucial that the process of mitosis is error free. This is because otherwise healthy cells can

A
grow into giant super cells.
B
undergo meiosis.
C
become cancer cells.
D
produce two identical cells.
13

Which statement is factual?

A
Asexual reproduction produces offspring that are identical to the parent.
B
Sexual reproduction allows for diploid gametes to combine to increase genetic variation.
C
Asexual reproduction leads to the formation of haploid gametes.
D
Sexual reproduction does not require the production of gametes.
14

Which process is similar to binary fission?

A
genetic variation
B
crossing over
C
meiosis
D
mitosis
15

What is the end result of meiosis?

A
four identical daughter cells
B
four different daughter cells
C
two identical daughter cells
D
two different daughter cells
16

Meiosis occurs in a series of different phases and creates genetically unique reproductive cells. Which process helps make meiotic cells genetically different and occurs during prophase I, but not during prophase II?

A
fertilization
B
independent assortment
C
crossing over
D
chromosome replication
17

In which type of reproduction can cells divide through the process of mitosis?

A
chromosome duplication
B
sexual reproduction
C
gamete formation
D
asexual reproduction
18

How many cell divisions occur during meiosis?

A
one
B
two
C
three
D
four
19

A cell contains the same DNA as its parent cell. This is a result of which process?

A
mitosis
B
meiosis
C
gamete formation
D
fertilization
20

Which series lists the stages of development in the gestational process in order, from beginning to end?

A
gametes ® embryo ® zygote ® fetus ® organism
B
gametes ® zygote ® embryo ® fetus ® organism
C
embryo ® gametes ® zygote ® fetus ® organism
D
zygote ® gametes ® embryo ® fetus ® organism

Did you find these answers helpful?