What do you know about the interaction between Ras and SOS? What other information is related to the question?
What will be an ideal response?
The protein SOS is a guanine nucleotide exchange factor for Ras. SOS helps facilitate the
exchange of GDP for GTP.Ras is a G-protein that is active when GTP is bound to it. Ras can then cleave
a phosphate off of GTP forming GDP to go into the inactive state. When SOS replaces GDP with GTP it
reactivates the Ras.
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Aquatic invertebrates excrete , a very toxic waste product, directly into the water.
A. urea B. nucleotides C. uric acid D. ammonia E. allatonin
DNA nucleotides include ________
A) uracil, guanine, adenine, and cytosine B) thymine, guanine, adenine, and cytosine C) thymine, uracil, adenine, and cytosine D) thymine, guanine, adenine, and uracil
One-thousandth of a meter is a
A) yard. B) millimeter (mm). C) micrometer (?m). D) nanometer (nm). E) centimeter (cm).
Which of the following is true of the animal pole of a zygote?
A) The animal pole produces larger cells than the vegetal pole. B) The animal pole is closer to the nucleus than the vegetal pole. C) The animal pole is hollow. D) The animal pole becomes the entire embryo.