Biology, 30.10.2020 01:20 silvernekoo
Epidermal growth factor (EGF) signals through a receptor, tyrosine kinase. EGF signaling promotes cell division by increasing nuclear concentrations of CyclinD through both the MEK and AKT signaling pathways as shown in the diagram.
Use the EGF Pathway passage to answer the questions.
1. Which of these BEST describes how the signal is transduced from the EGF receptor to the Ras protein?
A.
Ras is phosphorylated.
B.
Ras is dephosphorylated.
C.
Ras binds to a GTP molecule.
D.
Ras hydrolyzes a GTP molecule.
2. High concentrations of nuclear CyclinD is required for entry into S phase. Which of these events MOST likely occur upon entry into S phase?
A.
CyclinD is synthesized.
B.
CyclinD is degraded.
C.
DNA is polymerized.
D.
DNA is depolymerized.
3. A drug that inhibits the kinase activity of AKT would MOST likely have which of the following effects?
A.
Increased GSK-3b activity and increased CyclinD synthesis.
B.
Increased GSK-3b activity and decreased CyclinD synthesis.
C.
Decreased GSK-3b activity and increased CyclinD synthesis.
D.
Decreased GSK-3b activity and decreased CyclinD synthesis.
Answers: 1
Biology, 21.06.2019 15:00
Choose a mutation from those in model 2 that would be neutral for a cell. explain your reasoning by relating the mutation to the cellular respiration process.
Answers: 3
Biology, 21.06.2019 15:00
The central dogma of molecular biology is centered upon the process of protein synthesis, in which the information from dna is transcribed and translated, resulting in multiple amino acids being joined to form a)lipidsb)proteinsc)carbohydratesd)nucleic acids
Answers: 3
Biology, 22.06.2019 02:00
Astudent is looking through a microscope at some cells of an onion root tip. many of these cells are undergoing division since the root tip grows quickly and requires more cells. which cell most recently underwent metaphase? w x y z
Answers: 1
Biology, 22.06.2019 02:20
The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions
Answers: 1
Epidermal growth factor (EGF) signals through a receptor, tyrosine kinase. EGF signaling promotes ce...
Mathematics, 26.03.2021 01:00
Mathematics, 26.03.2021 01:00
Mathematics, 26.03.2021 01:00
Mathematics, 26.03.2021 01:00
Mathematics, 26.03.2021 01:00
Health, 26.03.2021 01:00
Mathematics, 26.03.2021 01:00
History, 26.03.2021 01:00
Biology, 26.03.2021 01:00
English, 26.03.2021 01:00