Explain the regulation of the trp operon by the 5' end of the mRNA when tryptophan is low vs high.

Which is common feature shared between the GG-subunit of a G-protein complex and the c-ras protein?

Select one:

a. intrinsic GTPase activity

b. membrane associated protein

c. signal transduction

d. All of these

e. None of these.

Compare and contrast the polymerization of actin and tubulin in vitro and in vivo.

Discuss homeostasis, both negative and positive feedback and provide examples:

Describe the structural hierarchy of the human body.

What would happen if:

1. I plugged the leads for the DNA gel in the wrong way? I was going too fast and I plugged the positive lead into the negative and the negative lead into the positive on the power supply?
2. I forgot one of my primers in the PCR tube? Would the PCR reaction work?
3. When I was extracting plasmid, I added the P3 buffer before adding the P2 buffer? Would the reaction still work?
4. After eluting the mtDNA, my partner and I mixed our samples together. We sent that mixed sample to be sequenced. Do you think we would get a sequence back?

Describe the 3 different polymers that make the cytoskeleton and explain their differences and similarities

One of the central principles of Biology is the relationship between structure and function. Discuss structure/function relationship in biological membranes. Describe what they are made of, what are their functions and use examples to make the link between structure and function. Emphasis should be placed on aspects of membrane permeability

What is gene control and why is gene control important?

explain why cellular signaling is crucial in biology. You will make sure to mention what are the two basic signaling switches and what is the general flow of signaling in a cell

Describe how subunit cooperativity works in the binding of O₂ to hemoglobin in the lungs and the release of O₂ in the tissues. Include in your response the benefit of subunit cooperativity.

20. How are rayfinned fishes different from fleshy finned fishes? What were distal phalanges probably first used for?

Be able to determine the possible genotypes based on a person’s phenotype. (For example: Suppose a person expresses tongue-rolling, a dominant trait, in his phenotype. What are his/her possible genotypes?)