Adam tells you that bacteria are so primitive and uninteresting. If it weren't for their disease-causing ability, we wouldn't care about them. Do you agree? Use three reasons to explain your position.
In: Biology
In: Biology
1. When a horse is mated with a donkey a mule is produced. The horse has 19 pairs of chromosomes in each cell; the jack has 33 pairs.
a) How many chromosomes are in each egg of the mare?
b) How many chromosomes are in each sperm of the jack?
c) How many chromosomes are in the cells of the mule?
d) Are the chromosomes of the mule in pairs?
e) Can the mule reproduce?
In: Biology
Signal Transduction:
A) Explain how growth factors, acting through the signal transduction pathway, regulate cell proliferation. Names of specific proteins and their function must be given.
B) Give 2 specific examples of how an alteration in the signal transduction pathway can lead to cancer
Cell Cycle Regulation:
Describe the mechanism by which the cell cycle is regulated by mitogens. In your answer, be sure to include the following:
a) The phases of the cell cycle and protein whose concentrations vary during the cell cycle
b) The complexes formed by the proteins in (a) and the mechanisms by which they are regulated
c) The substrate of the complexes in (b) and its role in cell cycle control
d) Describe 2 ways in which the substrate in (c) can be inactivated to cause cancer
In: Biology
In: Biology
Describe both potential benefits and concerns with the genetic modification of organisms.
In: Biology
The flu infects millions of people in the US every year and kills about 50,000 people every year. What do you think about getting the flu vaccine every year?
In: Biology
In: Biology
Mulitple Choice please answer all 3 no need to go in Depth
One mole (mol) of glucose (molecular mass = 180 daltons) is.
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a. |
180 × 1023 molecules of glucose |
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b. |
1 kilogram of glucose dissolved in 1 liter of solution |
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c. |
180 kilograms of glucose |
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d. |
180 grams of glucose |
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e. |
6.022×10 23 |
If the pH of a certain soda drink is 2, what is the hydrogen ion concentration in that drink?
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a. |
2 M |
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b. |
0.2 M |
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c. |
0.01 M |
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d. |
none of the above |
Which chemical group is most likely responsible for an organic molecule behaving as a base?
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a. |
hydroxyl |
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b. |
carbonyl |
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c. |
amino |
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d. |
phosphate |
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|
e. |
methyl |
In: Biology
All mutiple choice I need all 3 please
Water molecules have a polarity, which allows them to be electrically attracted to other water molecules and other polar molecules by weak chemical bonds known as
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a. |
non polar covalent bonds |
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b. |
hydrogen bonds |
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c. |
polar covalent bonds |
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d. |
ionic bonds |
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e. |
none of the above Which type of bond must be broken for water to vaporize?
Which of the following molecules is polar?
|
In: Biology
In: Biology
In: Biology
Several of our readings in past weeks have been on the effects on health of a microbiota shift. One example is the study of malnourished Malawian twins who had developed kwashiorkor. Can Koch's postulates be extended to cover a community of microbes? Explain which of Koch's postulates were fulfilled and which were violated in this study. What experiment(s) did the scientists do to fulfill Koch's third postulate?
reference link: http://science.sciencemag.org/content/339/6119/548.full?sid=69b84ea1-59af-41bb-bd62-2ba7388ce195
In: Biology
In: Biology
Real time PCR: how is it analyzed? what can be done to improve real time PCR? How do you know if the bullfight was good or not? What does it mean if the real time parameters are high, low, or if there were faults in something in the process seeing the results? Abound in your response.
Real time pcr:
• How to do?
• How it is interpreted?
• How it is optimized
In: Biology