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block

A biochemist measured the amount of DNA in cells growing in the laboratory and found that the quantity of DNA in the cells doubled _____.

Select the correct answer(s).  

(0/0)

---

between the G1 and G2 phases

between anaphase and telophase

between prophase and anaphase

during the M phase of the cell cycle

between the G2 phase and prophase

none

DNA replication occurs in _____.

Select the correct answer(s).  

(0/0)

---

prophase of both mitosis and meiosis

the G1 phase of interphase in reproductive cells only

the S phase of interphase in both somatic and reproductive cells

metaphase of meiosis only

the cytokinesis portion of the cell's life cycle

none

How many maternal chromosomes are present in a somatic human cell not engaged in cell division?

Select the correct answer(s).  

(0/0)

---

92

46

None of the listed responses is correct.

184

23

none

Which of the following is false regarding sister chromatids?

Select the correct answer(s).  

(0/0)

---

Sister chromatids form in the S-phase stage of the cell cycle.

Sister chromatids are created when DNA is replicated.

Both of the sister chromatids end up in the same daughter cell after cytokinesis has occurred.

Sister chromatids are separated during mitosis.

Sister chromatids are attached to one another at the centromere.

none

If a somatic human cell is just about to divide, it has _____ chromatids.

Select the correct answer(s).  

(0/0)

---

23

92

46

There is insufficient information to answer the question.

0

none

The complex of DNA and protein that makes up a eukaryotic chromosome is properly called _____.

Select the correct answer(s).  

(0/0)

---

a centromere

a centrosome

chromatin

a chromoplast

a chromatid

none

Chromatids are _____.

Select the correct answer(s).  

(0/0)

---

held together by the centrioles

the bacterial equivalent of eukaryotic chromosomes

identical copies of each other if they are part of the same chromosome

found only in aberrant chromosomes

composed of RNA

none

A cell biologist carefully measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined during the G2 phase of the cell cycle contained 200 units of DNA. What would be the amount of DNA at G1 of the cell cycle in one of the grasshopper daughter cells?

Select the correct answer(s).  

(0/0)

---

50 units

400 units

200 units

between 50 and 100 units

100 units

none

"Cytokinesis" refers to _____.

Select the correct answer(s).  

(0/0)

---

reduction in the number of chromosomes

division of the entire cell

division of the cytoplasm

movement of a cell from one place to another

division of the nucleus

none

During interphase, the genetic material of a typical eukaryotic cell is _____.

Select the correct answer(s).  

(0/0)

---

dispersed in the nucleus as long strands of chromatin

transported through the nuclear pores

dispersed in the cytoplasm as long strands of chromatin

condensed and the chromosomes are often visible under the light microscope

attached to microtubule spindle fibers

none

The function of the mitotic cell cycle is to produce daughter cells that _____.

Select the correct answer(s).  

(0/0)

---

None of the listed responses is correct.

have a random assortment of maternal and paternal chromosomes

have the same number of chromosomes as the parent cell but not the same genetic content

are genetically identical to the parent cell (assuming no mutation has occurred)

have the same number of chromatids as the parent cell had chromosomes

none

If a cell contains 60 chromatids at the start of mitosis, how many chromosomes will be found in each daughter cell at the completion of the cell cycle?

Select the correct answer(s).  

(0/0)

---

120

45

15

30

60

none

A cell entering the cell cycle with 32 chromosomes will produce two daughter cells, each with _____.

Select the correct answer(s).  

(0/0)

---

None of the listed responses is correct.

64 chromosomes

64 pairs of chromosomes

32 pairs of chromosomes

16 chromosomes

none

The region of a chromosome holding the two double strands of replicated DNA together is called _____.

Select the correct answer(s).  

(0/0)

---

an aster

chromatin

a centriole

a chromatid

a centromere

none

The centromere is a region in which _____.

Select the correct answer(s).  

(0/0)

---

microtubules are fastened to the centrioles during anaphase

the new cell plate forms in telophase

sister chromatids are attached to one another in prophase

chromosomes become aligned during metaphase

the chromosomes are connected to the cell plate in metaphase