1. Place the following terms in size order, from largest to smallest, based on the structures or concepts they represent:
b. gene pool
3. Explain how DNA encodes information.
4. Explain how all humans have the same genes, but vary genetically.
5. Explain how all cells in a person’s body have the same genome, but are of hundreds of different types that look and function differently.
1. DNA samples are taken from inside the cheek of people arrested on suspicion of having committed serious crimes. Only the numbers of 13 repeated sequences used to identify individuals are stored-the DNA itself is discarded and no other sequences recorded. The repeats are not part of the exome. Explains why sampling this part of the genome does not indicate anything about the person’s health, ancestry, or traits.
1. Give an example of a genome that is in human body, but is not human.
2. If you were ordering a genetic test panel, which traits and health risks would you like to know about, and why?
3. Two roommates go grocery shopping and purchase several packages of cookies that supposedly each provide 100 calories. After a semester of eating the snacks, one roommate has gained 6 pounds, but the other hasn’t. Assuming that other dietary and exercise habits are similar, explain the roommates’ different response to the cookies.
4. A study comparing feces of vegetarians, people who eat mostly meat (carnivores), and people who eat a variety of foods (omnivores) found that the microbiome of the vegetarians is much more diverse than that of the other types of diners. Explain why this might be so.
5. The Multiplex Initiative ( http://www. genome.gov/25521052) (http://www.genome.gov/25521052) asked 2,000 young adults ( a) whether genetics or lifestyle habits affect health more, and ( b) which of the following conditions they would want to take a genetic test for: osteoporosis, type 2 diabetes, high cholesterol, high blood pressure, lung cancer, and others. Most participants said that lifestyle factors are more important. Do you agree or disagree? State a reason for your answer.
1.Match each organelle to its function.
a. Lysosome 1. Lipid synthesis
b. rough ER 2. Houses DNA
c. nucleus 3. Energy extraction
d. smooth ER 4. Dismantles debris
e. Golgi apparatus 5. Detoxification
f. mitochondrion 6. Protein synthesis
g. peroxisome 7. Processes secretions
2. List and describe a disease that affects each of the following organelles or structures, using information from the text or elsewhere.
e. ion channel
7. Distinguish between
a. a bacterial cell and a eukaryotic cell
b. interphase and mitosis
c. mitosis and apoptosis
d. rough ER and smooth ER
e. microtubules and microfilaments
f. a stem cell and a progenitor cell
g. totipotent and pluripotent
11. Define microbiome.
2. In which organelle would a defect cause fatigue?
3.If you wanted to create a synthetic organelle to test new drugs for toxicity, which natural organelles function would you try to replicate?
4.An inherited form of migraine is caused by a mutation in gene ( SCN1A) that encodes a sodium channel and in which cell structure is it located?
6.Why wouldn’t a cell in an embryo likely be in phase G 0?
1. What advantage does compartmentalization provide to a large and complex cell?
2. What role does the plasma membrane play in signal transduction?
3. How do stem cells maintain their populations within tissues that consist of mostly differentiated cells?
4. Ads proclaiming “Stem Cells: The Future of Skin Rejuvenation” have appeared in many magazines. The product is actually secretions from stressed, cultured skin cells from behind the ears of healthy young people. The secretions are dried out and mixed with conventional skin cream. The ad promises that the goop contains “signals delivered by skin stem cells,” because skin has stem cells.
a. Is this product worth $ 155 for a 1.7- ounce jar? Why or why not?
b. What evidence might convince you to buy such a product?
5. Nations vary greatly in which stem cell technologies they consider ethical. Go to www. hinxtongroup.org/ wp.html and use the interactive map feature to find examples of
a. a nation that allows use of human embryos from clinics and nuclear transfer.
b. a nation that allows use of clinic embryos but not nuclear transfer.
c. a nation that bans derivation of any new human ES cell lines.
|Due By (Pacific Time)||01/24/2015 01:00 pm|
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