​​​​

1. Before a cell undergoes mitotic cell division:
   1. what has to happen first, regarding its DNA?
   2. If (what you wrote in 2a) didn’t happen, what problem would arise?

For the list below, indicate which statements are true of the G1, G2, S, or M phase of the cell cycle. A statement may be true of any or all of the phases

f. _______ mitotic cyclin is at its highest level

g. _______ a Cdk protein is present in the cell

h. _______ a cell cycle checkpoint has been identified in this phase

i. ________ nuclear envelope reforms

j. ________ cohesion proteins break down

k. ________ cell is active in doing its “job”

l. _________ cell is getting ready to make proteins needed for cell division

m. __________ S cyclin is at its lowest concentration

why is the human cell. cell cycle dependent

Compare and contrast the structure and function of the lac operon with the arabinose operon.

Fertility monitors are available that attempt to monitor the ovarian cycle to predict times of highest fertility. Knowing sperm can survive for up to 5 days in the oviduct, which hormone (choose from LH, FSH, Estradiol, and progesterone) should you monitor to find peak periods of fertility? Explain your answer.

The lysine decarboxylase test medium contained 5 grams of lysine and 1 gram of glucose per liter.  
Why is glucose important for this test to work? Also, how would reversing the amounts of lysine and glucose in the test medium (i.e., using 1 gram of lysine and 5 grams of glucose instead) affect the outcome of the test and why?

#1. What will happen if you grow your yucca in the dark for 2wks while providing nutrient, water and CO2?

A) Nothing….I will have nice yucca yam at end of 2wks

B) The leaves will be dull or dead so no yucca yam will be available at the end of 2wks

C) The yucca yam will be bigger than if I grew it outside; after all carbohydrates are made in night reaction.

D) The yucca yam will not form at all for it needs light to make ATP to drive yucca production at night

Please help and explain. Thank you!

Use this passage to answer the following questions: Climate is gradually changing because of Human activity. Biologists are concerned about the impact of this change on the distribution of biomes across the globe as the change occurs.

a) Briefly describe what is meant by the term climate: (1 or 2 sentences)

b) Briefly explain what a biome is: (1 or 2 sentences)

c) Explain why changing climate will end up changing biome distribution (explain the relationship between climate and biome distribution)

Discuss about the cost effective by integrated pest mangement?

Explain how to use an ion exchange column containing carboxymethyl resin to separate a protein mixture containing insulin (pl = 5.4), hemoglobin (pl = 7.1) and cytochrome c (pl = 10.6).

1. Describe what the “genetic code” means. What is a codon? Anticodon? Stop codon?

2. How to you take a DNA sequence and deduce a codon/anticodon, template, nontemplate strand?

3. Describe the characteristics of a tRNA. Why are these molecules considered bifunctional?

4. What is the wobble hypothesis? (codon-anticodon interactions)

5. How are amino acids activated?

1. Name 6 mechanisms of actions of antimicrobial drugs.

Using the link to the journal article below, what are 3 questions that can be addressed through out this article? Needing 3 questions for a journal lead sheet in my seminar class. Thanks!

https://bmcvetres.biomedcentral.com/track/pdf/10.1186/1746-6148-10-23