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

p53

retinoblastoma protein (Rb)

cyclin

cyclin-dependent kinase (Cdk)

The tropical rain forest ecosystem near the amazon river contains hundreds of food chains. which term refers to the combination of all food chains within an ecosystem? food web trophic level primary food chain ecosystem

Which part of a green plant shows the greatest decrease in chloroplasts in the fall of the year? A. Seed B. Root C. Stem D. Leaf

How do plants and animal adapts to temperate deciduous ecosystems

Asexual reproduction is not as widespread in (plants, animals) as it is in (plants, animals).

1. Plants are classified in the domain

Can the hypothalamus gland repair itself?

Approximately how many genes are found on chromosome 11?

What does natural selection act on

Where does cellular respiration occur? In the cytoplasm In the mitochondrion < - - In the cell membrane In the chlorophyll

People generally know that citrus fruits are good food sources of vitamin C, but there are plenty of non-citrus sources as well. What are some of the non-citrus foods are good sources of vitamin C?