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29 Jan 2018

1.A mutation occurs in a cell to cause its SH2 domains to be constantly activated. What is the result of this mutation? a. The cell will become senescent and cease to go through the cell cycle b. The cell will no longer be able to complete mitosis because of compromised spindle fibers c. The cell will experience continuous division. d. The cell will create increased G-Protein receptor density at the cell membrane surface, leading to sensitization to ligands released in the intercellular space. e. Nothing will change.

2. Which of the following catalyzes the transformation of ATP to cAMP? a. Adenylyl cyclase b. Phosphorylase c. Protein Kinase d. Phosphoinositol Phospholipase e. Diacyl glycerol

3.During which phases of the cell cycle does the cell have double the amount of DNA? a. G1 and G2 phase b. S and G1 phase c. G2 and Early M phase d. G2 and Late M phase e. G1 and Late M phase

4. Which of the following is a likely reason for apoptosis to occur in a cell? a. The cell is part of a structure that is being modified during development. b. The cell merges with another cell (ex: a sperm and egg cell. c. An error occurred when the cell's DNA was being replicated. d. The organism is growing quickly. e. a and c

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Elin HesselLv2

30 Jan 2018

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Related questions

Part A:

In prokaryotes and eukaryotes cell reproduction is similar in that it requires some kind of signal to proceed, DNA replication, careful separation of the DNA into two equal portions, and division of the cytoplasm. How is cell reproduction different in prokaryotes and eukaryotes?

Select one:

a. In a eukaryotic organism, the signals for cell division are usually not related to the environment but to the function of the entire organism.

b. Eukaryotic cells constantly divide whenever environmental conditions are adequate and the cells are large enough.

c. The linear chromosomes in prokaryotes are constantly being updated.

d. Prokaryotic cell division requires cytokinesis before mitosis because of their small size.

e. The sexual phase of most prokaryotes (bacteria) is essential to the rapid cell division required for infection.

Part B:

What does the name Cyclin Dependent Kinase stand for?

Select one:

a. A protein important to the cell cycle that is dependent on DNA synthesis.

b. An enzyme that cuts DNA so that chromosomes can segregate.

c. An enzyme that phosphorylates other proteins using ATP only when the protein Cyclin is bound to the enzyme.

d. An enzyme that rolls along microtubules dragging a vesicle.

e. An enzyme that connects chromosomes to the spindle fiber.

Part C:

The Cell Cycle is divided into Mitosis, Cytokinesis, and Interphase. Mitosis can be ordered into the following phases:

Select one:

a. Prophase/Prometaphase/Metaphase/Anaphase/Telophase

b. Anaphase/Prometaphase/Metaphase/Prophase/Telophase

c. Metaphase/Anaphase/Telophase/Prophase/Prometaphase

d. Telophase/Prophase/Prometaphase/Metaphase/Anaphase

e. Anaphase/Telophase/Prophase/Prometaphase/Metaphase

Part D:

The Cell Cycle is divided into Mitosis, Cytokinesis, and Interphase. Interphase can be ordered into the following phases:

Select one:

a. S/G1/G2

b. G2/G1/S

c. G1/S/G2

d. G2/S/G1

e. G1/G2/S

amethystyak657

Question 11 options:

A condition characterized by the growth of endometrial cells in areas other than the endometrium is called

Question 12

A standard screening test for cervical cancer is called

Question 13

The period of prenatal development in which the basic parts of the organ systems are formed is the

Question 14 options:

Detection of

Spell check is used by pregnancy test kits to detect the early stages of pregnancy.

Question 15

The actual gene sequence governing the expression of a trait is called a

Spell check , whereas the physical expression of this trait is the PHENOTYPE , which can also be defined as the physical expression of a gene.

Question 16

Down syndrome is a disorder where a person has an chromosome 21.

Question

A picture of all chromosomes taken in metaphase and used for analysis is called a

Question 18

A pregnancy where the fertilized egg implants in an area other than the uterus is called

Question

The basic building blocks of DNA are called

Question 20

Monosomy of the X chromosome characterized by a short stocky neck, underdeveloped secondary sexual characteristics, and infertility is called

syndrome.

Question 21

A deletion of the short arm of chromosome 5 with a typical cry that resembles a meowing cat characterize

Question 22

A serious psychological disorder characterized by the fear of becoming obese is called

Question 23

Diffusion of gases between capillary beds and tissues is called respiration.

Question 24

The destruction of alveoli by irritants such as cigarette smoke and agricultural dust is found in a disorder called

Question 25

Of the three types of skin cancer which are the most likely to metastasize

Question 25 options:

Melanoma

Squamous cell carcinoma

Basal cell carcinoma

All of the above have equal ability to metastasize

Question 26

Cancer of this organ/gland causes the most deaths annually

Question 26 options:

Lung

Breast

Prostate

Bladder

Question 27

The correct order of stages of the cell cycle that a new cell will go through immediately after being produced by mitosis is

Question 27 options:

S, G1, G2, M

G1, G2, M, S

G1, S, G2, M

M, G1, S, G2

Question 28

What is the purpose of DNA replication

Question 28 options:

To copy the information in a gene so that extra protein synthesis can be done

To make an RNA copy of the gene

To provide the cell with extra DNA in case the original gets damaged

To ensure that two cells produced by mitosis have the same genetic information as the parent cell

Question 29

Which of the following is not a function and/or advantage of mitosis

Question 29 options:

It can repair damaged tissue

Growth takes place through mitosis

It can replace old or damaged cells

All of the above are functions and/or advantages

Question 30

Which stage of the cell cycle occurs just after mitosis

Question 30 options:

Prophase

Save

Question 31 (1.5 points) Question 31 Unsaved

DNA replication is completed by the end of

Question 31 options:

Prophase

S phase

Question 32

Which of the following is NOT true of DNA

Question 32 options:

Generally double stranded

Stores the cell genetic information

Replicated by DNA polymerase

Contains A, C, U, and G

Question 33

These cell may enter G0 of the cell cycle permanently

Question 33 options:

Hepatocytes

Transformed cells

Neurons

Cells in the digestive system

Question 34

When a primary spermatocyte, goes through meiosis, how many mature sperm will be produced

Question 34 options:

Question 35

When a primary oocyte goes through meiosis, how many mature eggs will be produced

Question 35 options:

B__1) Driver mutations provide a growth advantage to a tumor cell. Which type of mutation is known to accumulate in cancer cells but has no direct contribution to the cancer phenotype?

A) alteration mutations B) passenger mutations C) carrier mutations

D) indirect mutations E) insignificant mutations

_A__2) Which of the following general mechanisms appear to be involved in the formation of cancer cells?

A) genomic instability, DNA repair failure, chromatin modifications

B) inversions, operon formation, methylation

C) RNA failure, DNA phosphorylation, phosphorylation of adenyl cyclase

D) transdetermination, mutation, allosteric interactions

E) suppression, tabulation, projection

_A__3) What is the name of the protein that combines with cyclins to exert local control of the cell cycle?

A) cyclin-dependent kinase B) phosphatase C) ATPase D) integrase E) hexokinase

_D__4) A protein functions as a cell-cycle regulator that causes cell death (apoptosis) to a damaged cell. What is the symbol given to this protein?

A) p34 B) p102 C) cyclin D) p53 E) phosphokinase

_A__5) The retinoblastoma protein (pRB), like p53, serves as a(n) ________ in regulating the cell cycle.

A) tumor suppressor B) tumor enhancer C) up regulator D) oncogene E) pseudooncogene

_C__6) Mutant versions of genes that are normally involved in promoting the cell cycle are known as ________.

A) tumor suppressors B) proto-oncogenes C) oncogenes D) malignant genes E) attenuators

_B__7) In sporadic cases of retinoblastoma, how many gene mutations are thought to be necessary in the same cell for a tumor to develop?

A) one B) two C) four D) six

__D_8) What is the name of the protein that appears to regulate the entry of cells into an S phase? This protein is also known as the "guardian of the genome."

A) p34 B) p102 C) cyclin D) p53 E) phosphokinase