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

p53

retinoblastoma protein (Rb)

cyclin

cyclin-dependent kinase (Cdk)

This is not a quatitative exercise. Keeping this in mind, can you see a general trend between bacterial death and UV exposure time?

Two tongue-rollers have 12 children. 8 of their children can roll their tongues and 4 cannot. Make an argument about the genotype of each of the parents and use a punnett square to explain your reasoning.

Some of the lipid groups appear similar, but changing a few components significantly alters their biological properties. identify the similarities and differences between glycerophospholipid and sphingolipid structures.

How does meiosis differ from mitosis? It increases the number of cells. It increases the amount of DNA. It reduces the amount of DNA. It decreases the number of cells.

How is DNA copied? A. The sense strand of DNA is used as a template to create both strands of the new double helix. B. The mRNA made from the DNA is used as a template to create a complementary strand of DNA. C.

How is a dog similar to a baseball player?

What experimental evidence leads scientists to believe that only quantized electronic energy states exist in atoms?

With which atoms does carbon most frequently bond

What is a karyotype?

A scientist has been working for 15 years to develop a new type of plastic material, but she has not yet been successful. Which of the following best explains why her work is still a success?