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Biology : The Unity and Diversity of Life

Cecie Starr, Christine A. Evers; Lisa Starr

Chapter 11

How Cells Reproduce - all with Video Answers

Educators

Chapter Questions

00:42

Problem 1

Mitosis and cytoplasmic division function in ____.
a. asexual reproduction of single-celled prokaryotes
b. development and tissue repair in multicelled species
c. sexual reproduction in plants and animals

Morgan Thompson
Morgan Thompson
Numerade Educator
00:46

Problem 2

A duplicated chromosome has how many chromatids?

Aditya Sood
Aditya Sood
Numerade Educator
00:15

Problem 3

In the diagrams of the nucleus shown below, fill in the blanks with the name of each interval.

Mishal Gul
Mishal Gul
Numerade Educator
01:48

Problem 4

Homologous chromosomes ____.
a. are inherited from two parents
b. are sister chromatids
c. are different in size and in length

Charles Machakwa
Charles Machakwa
Numerade Educator
01:05

Problem 5

Most healthy body cells spend the majority of their lives in _______.
a. prophase
b. metaphase
c. anaphase
d. telophase
e. interphase
f. senescence

Charles Machakwa
Charles Machakwa
Numerade Educator
01:02

Problem 6

The spindle attaches to chromosomes at the____________.
a. centriole
b. contractile ring
c. centromere
d. centrosome

Aditya Sood
Aditya Sood
Numerade Educator
02:00

Problem 7

Which is not a stage of mitosis?
a. prophase
b. metaphase
c. interphase
d. anaphase

Christy M.
Christy M.
Numerade Educator
00:29

Problem 8

In intervals of interphase, G stands for________ .
a. gap
b. growth
c. Gey
d. gene

Aditya Sood
Aditya Sood
Numerade Educator
01:32

Problem 9

Interphase is the part of the cell cycle when ______________.
a. a cell ceases to function
b. a cell forms its spindle apparatus
c. a cell grows and replicates its DNA
d. mitosis proceeds

Charles Machakwa
Charles Machakwa
Numerade Educator
00:43

Problem 10

After mitosis, the chromosome number of a descendant
cell is ___________ the parent cell's.
a. the same as
b. one-half of
c. rearranged compared to
d. double that of

Aditya Sood
Aditya Sood
Numerade Educator
01:23

Problem 11

Cytoplasm of a plant cell divides by the process of _____.
a. telekinesis
b. nuclear division
c. fission
d. cytokinesis

Charles Machakwa
Charles Machakwa
Numerade Educator
00:36

Problem 12

Match each term with its best description.
_______cell plate
_______spindle
_______ tumor
_______cleavage furrow
_______contractile ring
_______cancer
_______centrosomes
_______telomere
lump of abnormal cells
b. made of microfilaments
c. divides plant cells
d. spindle originates here
e. dangerous metastatic cells
f. made of microtubules
g. indentation
h. shortens with age

Mishal Gul
Mishal Gul
Numerade Educator
01:50

Problem 13

Match each stage with the events listed.
_____metaphase
_____prophase
_____telophase
_____interphase
_____anaphase
_____cytokinesis
a. sister chromatids move apart
b. chromosomes condense
c. new nuclei form
d. chromosomes aligned midway between spindle poles
$\mathrm{e} \cdot \mathrm{G}_{1}, \mathrm{S}, \mathrm{G}_{2}$
f. cytoplasmic division

Charles Machakwa
Charles Machakwa
Numerade Educator
01:21

Problem 14

The $\mathrm{BRCA} 1$ gene _____.
a. is a checkpoint gene
b. is a proto-oncogene
c. encodes a tumor suppressor
d. all of the above

Charles Machakwa
Charles Machakwa
Numerade Educator
01:34

Problem 15

_____ are characteristic of cancer.
a. Malignant cells
b. Neoplasms
c. Tumors

Charles Machakwa
Charles Machakwa
Numerade Educator