DNA polymerases I, III, and delta have important roles in replication. Which of these proteins have similar functions? Describe those similar functions that they share. Which one performs a different function and what is that function?

44) Your hobby is breeding fancy guinea pigs for people who like that sort of thing. You set up a cross in which the parents are true-breeding and have phenotypes as follows: the father has black fur and a long tail and the mother has white fur and is tailless. They produce offspring in which all of the males are white and have long tails and all of the females are grey with long tails.

a. Is fur color autosomal or sex linked? Explain.

b. Describe which fur color phenotypes are dominant, recessive, co-dominant, or incompletely dominant where appropriate.

c.Is tail length autosomal or sex-linked? Explain.

d.Describe which tail length phenotypes are dominant, recessive, co-dominant, or incompletely dominant where appropriate.

e.What phenotypic ratios do you expect in the F2

Gingivitis is a Periodontal pathogen that causes dental plaques. There are more than 500 species in the oral cavity. A study states that at least 3 genera of bacterial isolates were able to stimulate light production and about 170 were able to respond to the autoinducer AI-2. The signal for AI-2 induces the growth of the bacteria which eventually increases the severity of the infection.

a) Since 170 bacterial isolates respond to AI-2 quorum sensing alone, how many bacterial isolates use:

agr quorum sensing

hsl quorum sensing

AI-2/agr quorum sensing

AI-2/hsl quorum sensing?

b) If AI-2 induces growth and increases the severity of infection, do bacteria that use agr quorum sensing do the same thing or do they differ? What about bacteria that use hsl quorum sensing?

Describe how components of the cytoskeleton, cytoplasm, cell surface and extracellular matrix interact to form cell junctions and the roles of distinct junction types in skin

Diagram and explain transcription

What are the 7 steps of Intramembranous ossification?

As we ride the glucose molecule into the small intestine we see a curious rod shaped organism. Upon further inspection we notice that it has an outer membrane with lipopolysaccharide. We barely have time to contemplate what this means before we feel the pull of transport. We ride past the cell wall (outer membrane and peptidoglycan) and are pulled through a transporter and into the cytoplasmic membrane of the cell. We ride through the transporter’s hydrophilic center, down the concentration gradient and into the cytoplasm.

1. What type of protein is this transporter?

Membrane transport protein

2. What type of transport are we experiencing?

What is the relationship between Microvilli of gut, epithelium, glucose, circulatory system, capillary fenestrations, glucose/ATP/life. Major emphasis on RELATIONSHIP

why you think a solid understanding of Biology is important for our everyday lives.

• What is LTP?
• What are some of the presynaptic changes observed?
• What are some of the postsynaptic changes observed?
• How do the AMPA and NMDA glutamate receptors contribute to LTP?