Chapter 11 Test review
Read each of the sentences that describe phases of cell cycle. the match the description to the correct phase listed below. ___ Chromatids are distributed to the two daughter nuclei A) g1 B) S C) G2 D) M
A
Read each statement and determine if it relates to Cell division or Apoptosis A . Cell Division B. Apoptosis This process increases number of body cells
A
Read each statement and determine if it relates to Cell division or Apoptosis A . Cell Division B. Apoptosis This process repairs injuries
A
Read each of the sentences that describe phases of cell cycle. the match the description to the correct phase listed below. ___ At the end of this phase , each chromosome is made up of two chromatids A) g1 B) S C) G2 D) M
C
The two cells are provided with nutrients for growth. After 35 hours, which is the most likely observation of the cells.
Cell 2 has divided twice, while Cell 1 has divided once
Read each of the sentences that describe phases of cell cycle. the match the description to the correct phase listed below. ___ Organelles and materials needed for DNA synthesis are made A) g1 B) S C) G2 D) M
D
If a cubical cell with 2-cm side doubles the dimensions of its sides, what change occurs to the ratio of its surface area to volume?
The ratio is halved
What structure is found in prokaryotic cells but not eukaryotic cells?
a single, circular DNA chromosomes found in the cytoplasm
Bacteria reproduce _____________ through cell fission. A tube of cytoplasm can temporarily connect two bacterial cells to transfer genetic information. Some DNA passes through this tube. Like ___________ reproduction it causes genetic variation. However, it does not produce offspring
asexually sexual
The p53 protein is involved in DNA repair and in triggering cell death when repair is not possible. Why are some cancers associated with defective p53 genes? Select all that apply.
because cells with damaged DNA are not triggered to die because cell growth and division is no longer regulated by p53 protein because cells with damaged DNA grow and divide uncontrollably
Read the statement and determine whether it is describing a cancer or normal cell. : They are non- differentiated cells
cancer cells
Read the statement and determine whether it is describing a cancer or normal cell: The cells have abnormal nuclei
cancer cells
Read the statement and determine whether it is describing a cancer or normal cell: The cells undergo metastasis
cancer cells
The ____________ is the point of attachment for sister chromatids.
centromere
The ___________ is an area from which the spindle fibers extend .
centrosome
Look at the picture . What does it represent . Correct two correct answers .
differentiation is the process by which cells become specialized the inner mass of cells the blastocyst will form the specialized cells in the body
Read the statement and determine whether it is describing a cancer or normal cell.: cells with DNA damage undergo apoptosis
normal cell
Read the statement and determine whether it is describing a cancer or normal cell.: the cells have a normal nucleus
normal cell
Read the statement and determine whether it is describing a cancer or normal cell: the cells are differentiated and specialized
normal cell
The diagram shows the structure of a eukaryotic chromosome. Which if the following events is best represented by the diagram?
the binding of DNA by histones
Paramecium is a single celled protozoan. The graph shows a typical growth curve for a colony of Paramecium in a nutrient culture. Two paramecium cells sometimes engage in a sexual process in which genetic materials are exchanged, but no new cells are produced . Which additional observation would provide the strongest evidence that Paramecium reproduces asexually?
the cells in the colony are genetically identical
Which of the following happens when cancer occurs?
the control of the cell cycle is impaired
Which of the following statements are typical for cancer cells? Select all that apply.
they tend to be unspecialized they may form tumors that metastasize they have defective genes
Why do cells divide? Select all that apply.
to ensure that a cell does not become too large to produce new cells during an organism's growth to replace damaged cells and tissues
If the side of a cubical cell doubled, what would the cell then require? Select all the correct answers.
to excrete eight times more waste
Read each of the sentences that describe phases of cell cycle. the match the description to the correct phase listed below. ___ Proteins and other materials needed for cell division are synthesized A) g1 B) S C) G2 D) M
B
Read each statement and determine if it relates to Cell division or Apoptosis A . Cell Division B. Apoptosis This process causes death of abnormal
B
Read each statement and determine if it relates to Cell division or Apoptosis A . Cell Division B. Apoptosis This process produces specialized cells
B
Read each statement and determine if it relates to Cell division or Apoptosis A . Cell Division B. Apoptosis This process regulates the cell cycle
B
