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A force F = 200i - 400j + FZ k N, is acting through point A(0,0,0) m. If F creates a moment component of -3000 Nm in the direction of a line passing from point B (2,4,5) m to point C(-3,6,8) m, determine the value of FZ.
Which process is described as creating permanent formation of many specific lock-and-key bonds between complementary molecules on each cell surface? Select one: a. specific adherence b. non-specific adherence c. slime layer formation d. Brownian m..
You have a 1mM stock solution of Arsenic to treat culture cells in a liquid medium. You need to treat your cells with Arsenic such that it has a final concentration of 5nM once it has been added to the cells.
What was the viable count of organisms in the original undiluted culture?
A corporation has invented a new low-calorie sugar substitute. They wish to determine if the substitute might be carcinogenic, so they use it in the Ames test with Salmonella his mutants.
Why are the cells of the stratum basale used to create induced pluripotent stem (iPS)cells? What characteristics make them good candidates for this over ther cell types?
Describe the principle of the Ames test for identifying chemical carcinogens youre answer should include what you would see for mutagenic and non mutagenic substances.
What is coordinated gene regulation? Why is it important?
Draw a hypothetical metabolic pathway composed of five substrates, five enzymes, and a product called Biological Sciazine. Number the substrates 1-5, and label the enzymes A-E, in order. (For instance, enzyme A catalyzes the reaction between subst..
A set of Mendelian crosses involving two traits is performed. The first cross is between a plant with green and wrinkled seeds and a plant with yellow and smooth seeds. The F1 all have yellow and smooth seeds.
Describe the regulation of eukaryotic gene expression. Include what regions of DNA and what proteins are important and why? Include a discussion of post-transcriptional regulation.
What are the two exceptions to the general rule that all cells in the human body contain a complete, identical copy, of a person's DNA?
In a fictional population of bullfrogs in a lake, there are 300 mature females and 300 mature males. However, only 50 of those males hold territories (and thus, are reproductive) and a further 20 of those males employ the sneaker tactic (and thus,..
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