Which protein is a positive regulator that phosphorylates other proteins when activated?

p53

retinoblastoma protein (Rb)

cyclin

cyclin-dependent kinase (Cdk)

In certain flowers, yellow petals are dominant over blue petals. What is the genotype of a flower with green petals? RR rr Rr cannot be determined

What are three examples of noncontact forces?

How big is a blood cell? How does its size compare to Dust Mites, and then to the E. coli bacteria

The advantage of yeast cells over bacterial cells to express human proteins is that: yeast cells grow faster yeast cells are easier to manipulate genetically yeast cells are eukaryotic and modify proteins similarly to human cells yeast cells are

What is the function of the cell membrane?

Summary of newton's laws and their importance to daily lives

Explain what is meant by the statement cleaner than coal

What type of cells are produced after fertilization occurs and the gametes combine? A) an egg cell B) a sperm cell C) a diploid zygote D) a haploid zygote

On a hot summer day, you notice a line of dark clouds forming. based on this observation, you go back inside and get an umbrella. what scientific skill have you used.

Which of the following is an example of a cultural control of pests? using natural pest predators using pest hormones using synthetic pesticides keeping homes clean