1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
34kurt
3 years ago
7

GTPases serve in many signal transduction pathways and the presence of GTP or GDP dictates where the pathway is on or off, respe

ctively. Which of the following statements is true regarding guanine nucleotide exchange factors (GEF) and the role in these signaling pathways?
a. They hydrolyze GTP into GDP and Pi.
b. They decrease the GTPase activity of the G-protein.
c. They catalyze the dissociation of GDP on the G-protein and promote the replacement of GTP.
d. none of the above
Biology
1 answer:
Anton [14]3 years ago
3 0

Answer:

None of the above.

Explanation:

GTPases are the regulatory proteins that are involved in the signal transduction pathway involving the activation of the G protein. The mutation in these proteins cal lead to cancer cells.

The guanine nucleotide exchange factors (GEF) allows the replacement of GDP by GTP. They activates the GTPase activity of the cell and can also activate the multiple GTPase activity of the cell. The Ras superfamily is activated by the GEF.

Thus, the correct answer is option (d).

You might be interested in
What is the most plentiful fossil fuel? A: oil B:Natural has C: petroleum D: coal
neonofarm [45]

Answer:

d coal

Explanation:

i need more words for it to let me post this answer blah blah

4 0
3 years ago
Fossil seashells have been found in rock beds on land. what can you infer about how the area has changed
olga55 [171]
When we go to the beach one of the most exiting activities that we do is of course collect the best looking seashells. Now I have never seen seashells in another place other than the beach.

 My point in this entery that I have just mentioned is that where there is seeashells there is body of water. What those fossils mean is that that particular place whhere those seashells were once found means that maybe a very long whille back that place was onetime a body of water. Some natural dissaster came and that place doughtet and the water moved to some place else. 


My pleasure to help, over and out ;)
3 0
3 years ago
How can you time your sleep-wake schedule to minimize feeling tired in the morning?
stiv31 [10]
Usually you can change that if you go to bed at like maybe say 7:30pm or maybe even 8, sometimes if you do that then you won't be tired in the morning. Hope this helped, have a great day! :D
8 0
3 years ago
All animals share several common characteristics. Which is a characteristic shared by all animals?
kirill [66]

Answer: multi-cellular bodies

Explanation: All animals are multi-cellular. This means that they are made up of many cells/cellular systems. Single-celled organisms, on the other hand, are not considered animals. Those would mostly be too tiny to see without the aid of a microscope tool. The other answer choices would not fit, because not all animals have bones (endoskeletons or exoskeletons). Also, only some animals are cold blooded, which is what the last answer choice has to do with.

4 0
3 years ago
Why is photosynthesis important for plants?
Aleksandr [31]

Answer:

Plants perform photosynthesis because it generates the food and energy they need for growth and cellular respiration. It is important to note that not all plants photosynthesize. Some are parasites and simply attach themselves to other plants and feed from them.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which type of long-term memory is most resistant to loss with alzheimer’s disease?
    10·1 answer
  • The questions is in the questions, you will be reported for typing random stuff.
    12·2 answers
  • How does the declination of the sun vary over 1 yr?<br><br> Checking answers for my lab.
    12·2 answers
  • Which of the following statements best describes a function of adaptive immunity?
    7·2 answers
  • The development of specialized tissues and organs in a multicellular organism's embryo occurs as a result of
    11·1 answer
  • There is still some controversy among biologists about whether Neanderthals should be placed within the same species as modern h
    14·1 answer
  • If I breed a short for FF female with a short for Ff male then I will expect to see what type of offspring
    9·1 answer
  • Why are peas a good model system for studying heredity?
    12·1 answer
  • Which are examples of structures composed of secondary lymphoid tissue? Select all that apply.
    5·2 answers
  • What is niche? And what human interaction does asiatic cheetahs have?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!