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This anaerobic, endospore-forming, Gram-positive bacillus is common in both soil and water. It produces neurotoxins that cause botulism. A-Clostridium botulinum B-Clostridium tetani C-Myobacterium t
How would you describe the effect of inhibitor concentration, substrate concentration, temperature, enzyme concentration, pH on enzyme activity?
Question 1: Why is it essential that the SalI site be situated within the lacZalpha coding sequence in order to do blue-white screening? Question 2: What would happen if you change both pH and subst
Question 1: What type of information can the AFM method provide? Question 2: How would you know if the protein binds to more than one non-adjacent site on the DNA fragment?
Why is the D1 receptor coupled through this specific pathway? What would happen if the D1 receptor was Gs-coupled?
Why do you think that relatively few fetuses with chromosomal trisomies survive to birth? It is possible for the distribution of some substances across a cell membrane to be at equilibrium, even thou
Quetion 1: What are some of the genetic factors that contribute to aging? Question 2: What happens to our chromosomes as they get older?
There is a class of enzymes called phospholipases, which cleave phospholipids at specific bonds. Question 1: One such phospholipase releases free sphingosine and phosphocholine (choline with a phosp
Suppose that a coagulase test is were performed without a control tube. How would this omission decrease the reliability of the test? Explain how the ability to produce DNase would benefit the pathog
When strep throat is suspected, the physician often will recommend that a pharyngeal (throat) swab be taken and cultivated on blood agar. Why? Explain how beta-hemolyis is distinguished from alpha-h
Complementary base-pairing allows for: a) spontaneous mutations to occur. b) genes to be expressed as a phenotype. c) DNA to serve as its own template for replication.
Explain why this amoeba depends on the formation of resistant cysts that are released during a diarrhea episode to be transmitted between host?
The wear between metal surfaces 1) is reduced if surface films are present 2) is increased by the presence of surface films 3) Is independent of the presence of surface films
When a smooth metal slides on a smooth polymer: 1) It is necessary to use a lubricant 2) The friction will be very high 3) The wear will be abrasive in character
The friction coefficient between two materials 1) depends only on the load and speed of sliding 2) is decreased if the two materials are alike
Describe what you observed in your cheek smear wet-mount, direct stained slide, and indirectly stained slide. What were the similarities? What were the differences?
Design a short model experiment to find what triggers mid blastula transition using prior knowledge from such experiments like the Hans Spermann experiment. What is the role of mitochondria in neuro
Design an short model experiment to find out what triggers Mid-Blastula transition using data such as the Hans Spemann experiment. Are lysozomes digestive enzyme found in prokaryotic cells?
What is the association between nucelosomes and supercoiling in eukaryotes? What is the sodium potassium pump and what does it accomplish ?
Describe the procedure for making nutrient agar deeps. Just need the general procedure.. Why does dehydration cause an increase in the hematrocrit?
What do you predict would happen to the shape of the growth curve if you were to subculture vibrio growing in log phase rich medium into a poor medium?
Question 1: Where are membrane lipids produced? Question 2: Explain the importance of understanding cells in order to understand the whole body.
Explain how the structural features of the major tissues that make up the skin enable it to funtion as a protective structure. Be specific and thorough in your descriptions of these structures.
What bond is responsible for the branch points in glycogen? a. ?(1? 4) peptidyl linkages b. C=C double bonds
What is the differnce between chemically gated and voltage gated ion channels? How do they work together to create an action potential