Oxytocin stimulates a G protein-coupled signal transduction pathway. During sign
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Question
Oxytocin stimulates a G protein-coupled signal transduction pathway. During signal transduction in this pathway, a G protein becomes activated. Which three molecules does this G protein interact with in this pathway?
a. G protein-coupled receptor, ATP, and enzyme.
b. Ligand, GDP, and GTP.
c. Hormone, G protein-linked receptor, and GTP.
d. GTP, cytoplasmic receptor, and transcription factor.
e. G protein-linked receptor, GTP, and effector protein.
Oxytocin stimulates a G protein-coupled signal transduction pathway. During signal transduction in this pathway, a G protein becomes activated. Which three molecules does this G protein interact with in this pathway?
G protein-coupled receptor, ATP, and enzyme.
Ligand, GDP, and GTP.
Hormone, G protein-linked receptor, and GTP.
GTP, cytoplasmic receptor, and transcription factor.
G protein-linked receptor, GTP, and effector protein.
9. The products of mitosis are _____.
two genetically identical nuclei.
four nuclei containing half as much DNA as the parent nucleus.
four genetically identical nuclei.
two genetically identical cells.
one nucleus containing twice as much DNA as the parent nucleus.
10. Starting with a fertilized egg (i.e., a zygote), a series of five mitotic cell divisions would produce an early embryo with how many cells?
8.
32.
4.
16.
64.
11. A cell in G2 contains 18 pairs of sister chromatids. This same cell in G1 would have _____.
18 chromosomes.
18 pairs of sister chromatids.
36 chromosomes.
9 chromosomes.
9 pairs of sister chromatids.
12. Late in mitotic anaphase, a cell with 28 daughter chromosomes has _____ centromeres.
14.
56.
0.
112.
28.
13. Which of the following aspects of the cell cycle would be most disrupted by cytochalasin B, a drug that binds to actin monomers and prevents them from polymerizing into filaments?
DNA synthesis.
Cell elongation during anaphase.
Spindle formation.
Cytokinesis.
Spindle attachment to kinetochores.
14. A cyclin-dependent kinase (Cdk) is _____.
an enzyme that attaches phosphate groups to other proteins.
an enzyme that removes hydroxyl groups from growth hormones.
present only during the M phase of the cell cycle.
inactive, or "turned off," in the presence of cyclin.
the enzyme that catalyzes the attachment of chromosomes to microtubules.
15.
A mutation frequently causes a chromosome of a cell line to become detached from the spindle. The most likely consequence of this mutation is that _______ cells will be stopped at the _______ checkpoint.
more; M.
fewer; M.
fewer; G1.
more; G2.
more; G1.
Explanation / Answer
9. The products of mitosis are _____.
The answer is two genetically identical cells. (Because of chromatid segregation)
10. Starting with a fertilized egg (i.e., a zygote), a series of five mitotic cell divisions would produce an early embryo with how many cells?
The answer is 2^n (Where n is no of series of divions)
as n = 5, the answer is 2^5 = 2*2*2*2*2= 32
11. A cell in G2 contains 18 pairs of sister chromatids. This same cell in G1 would have _____.
The answer is 18 chromosomes. Because during S phase, each chromosome undergoes replication, due to this each chromosome has a pair of chromatids.
12. Late in mitotic anaphase, a cell with 28 daughter chromosomes has _____ centromeres.
The answer is 28.
Becuase, as the chromoatide segregation occurs in early anaphase, the chromosome will be formed. As each chromosome has one centromere,the answer is 28.
As I am an expert from Genetics, I have answered the cell division questions.
ACCORDING TO CHEGG GUIDELINES WE HAVE TO ANSWER ONE QUESTION AT A TIME. HERE I ANSWERED THE FIVE QUESTIONS. POST THE REST AS SPERATE QUESTIONS.
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