2. What type of cells perform mitosis?

O A. ova (egg)

OB. sex cells

O C. body cells

The nucleus is NOT found in plant cells. animal cells. eukaryotic cells. none of the above

If the frequency of an allele ("A") for an STR locus is 0.02 and the frequency of another allele ("B") for the same locus is 0.03, what is the probability that a member of that population is heterozygous ("AB") for the above alleles?

Explain why a message moving along nerve pathways takes time.

The gas nitric oxide has been identified as a signaling molecule. Which of the following mechanisms of action would you expect from a gaseous molecule? a) It binds to a G-protein-linked receptor. b) It binds to a receptor tyrosine kinase.

It can be seen on a cladogram that modern birds and reptiles share a common ancestor. Select the piece of evidence that best supports this idea. a) Reptiles are also related to mammals.

What is the role of a cientist? O A. To keep scientific secrets O B. To report accurate results O C. To dictate government policy O D. To tell people how they must live SUBMI

About how much energy is transferred from one level of an energy pyramid to the next higher level?

What process occurs as new layers of sediment are added to old layers of sediment, causing pressure on the older layers? •weathering •erosion •cementation •deposition

Which cell structures are seen in prokaryotic and eukaryotic cells

Which of the following is a way that muscle fibers get energy needed for contraction? 1) When a muscle is contracting during peak activity, it quickly uses up stored creatine phosphate which was produced during moderate exercise.