how many HIS 3 and URA 3 enzymes are needed when we add 10 mM 3-amino-1,2,4-triazole (3 AT) to the growth medium as a competitive inhibitor of HIS3?

Births, deaths, and emigration/immigration define life history

1a. What are the different strategies for reproduction of semelparous and iteroparous pecies? What environmental strategies favor each one and why? (Inlude the trade-off strategy in discussion) (Explain with examples)

1b. Describe 2 organisms that have very different iteroparous life histories. Describe the environment the organisms grow in and their strategies for growth and reproduction. Relate answer to life history for evolution.

(K-strategists are organisms that have pretty low offspring production but high parental investment. K-strategists are most likely operating in a place where the population is at equilbrium in terms of envrionmental pressures on population size, or a slow life cycle. R-strategists are organisms that have many offspring but have small parental investment, r is a value of reproduction, or fast life cycle.)

Complex III is

1. an integral membrane protein
2. a peripheral membrane protein
3. involved in active transport of H+
4. involved in redox reaction
5. a, c, and d are correct

In various reptiles, temperature determines sex during development. Some scientists suggest that as Earth's climate becomes warmer, sex ratios in these species will be biased and the animals will become even more endagered. Is this concern warranted and why? What might happen to these populations as a result?

Examples of endergonic reactions/ processes is/ are

1. chemotaxis
2. Transcription
3. H+ gradient generation
4. Calvin- Benson cycle
5. All proposed answers are endergonic

Dideoxynucleotides terminate

1. translation
2. transformation
3. DNA replication
4. Transcription
5. Crisper editing

The Sucker's Gambit cancer therapy relies on what evolutionary phenomenon or strategy? (Select one).

A. Cells in a tumor differ from one another and actually compete with one another. Thus a goal is to find a way to make chemotherapy sensitive cells OUTCOMPETE non-sensitive cells BEFORE apply chemotherapy.

B. Cells in a tumor are different from one another. Attacking the chemotherapy resistant cells with pathogens will make them more susceptible to chemotherapy.

C. Neither answer is correct.

A. Describe how T cell receptors differ from immunoglobulins. Include information on their generation, structure, and function.

B. Explain the primary difference in how B cells recognize antigens verses T cells

C. Explain the effect of immunoglobulins not being able to undergo isotype switching.

D. Explain the effect if cells lost their MHC II molecules.

Describe a feature of endospores that make them resistant to microbial control. Name a sterilizing technique that could kill them.

you have been shown two cells under a microscope. One is small, contains many mitochondria and numerous glycogen granules. The other is somewhat larger, has only a few mitochondria and no glycogen granules. (1) Explain which cell is more suited for aerobic cellular respiration. (2) Explain which cell is more suited for anaerobic cellular respiration. (3) Which cell do you think is more metabolically active and why?

Does the second cranial nerve pass OVER the hypophysis ?

In this section we studied epidemiology. Give an example of an infectious disease and how the etiologic agents would spread from the reservoir to the members of your community. Be sure to include the type of reservoir and the preferred portal of entry for the disease

Identify what keeps this entire cycle of photosynthesis and aerobic respiration going indefinitely and why. (3) Explain how increasing amounts of atmospheric carbon dioxide and deforestation have affected this cycle and climate.

Explain how the processes of photosynthesis and aerobic cellular respiration are dependent on one another by identifying the molecules that cycle between them and where they are produced and consumed in the cycle.  

Write the reactions by which aspartate donates its nitrogen for synthesis of arginine and urea. Where does the aspartate nitrogen bind to citrulline? Where do the carbons of aspartate go after the nitrogen is left on citrulline (what is the product) and where does that product fit into the rest of metabolism?