If there are 12 sister chromatids in a cell, how many centromeres are there?

a. 12

b. 24

c. 6

d. 36

Which proteins move the farthest during sds-polyacrylamide gel electrophoresis?

The process of reading the mRNA and building the protein is called

Describe the process that takes place in the leaf to produce oxygen

The tubes transporting minerals and water upward are called?

How do you think the change in chlorophyll levels is a response to changes in the lenght of day from summer to fall

Which organism's are omnivores? A) The snake, the bear, and the fish B) The fish and the eagle C) The bear and the fish D) The snake and the mouse If an omnivore is an animal that eats both plants and animals, I'd choose D because all the other

How are all humans similar?

Why does earth have such a diversity of plant and animal life? give three reasons.

After sequencing a molecule of dna, you discover that 20% of the bases are cytosine. what percentage of the bases would you expect to be thymine? explain why.

Kidneys that can conserve water are essential to homeostasis because: a) some animals live in dry or salty environments. b) some animals drink water.