Describe an example of a keystone species leading to a trophic cascade. Include:
a. The biotic factors involved.
b. The abiotic factors involved.
c. Community interactions involved.
In: Biology
In: Biology
10. What factors contribute to a SNP/allelic marker having a higher level of significance in an association study? (4 pts)
11A. What is linkage disequilibrium (LD)? Give a concise definition. (3 pts)
11B. What does it mean for casual alleles to be in “perfect LD” with one of the SNPs being genotyped? (3 pts)
In: Biology
GENETICS QUESTION:
Indv 1 (WT): TACATAGGCATAGGGGTA
Indv 2: TACATAGGCATATGGGGTA
Indv 3: TACATAGGCATCGGGGTA
Indv 4: TACATAGGCATAGGGATA
In: Biology
Are the following interchangeable?
glycolipid vs glycerolipid
sphingoglycolipid vs glycosphingolipid
sphingophospholipid vs phosphosphingolipid
triacylglycerol vs triglyceride vs triacylglyceride vs triglycerol
Are the terms the same?
In: Biology
During the elongation stage of DNA replication, does DNA
polymerase III ever
leave the lagging strand? Why or why not?
In: Biology
Your major research project as a graduate student involves analyzing a collection of mutants isolated by your lab all of which have defects in some aspect of the secretory pathway. For each of the mutants below, suggest where in the pathway the mutation might occur. If possible suggest a candidate gene that might be affected in that particular line.
1. Cells grow normally but produce no extracellular matrix
2. Cells grow normally and produce extracellular matrix but have reduced cells do not grow on the matrix
3. Cells do not secrete any protein but they do accumulate hundreds of vesicles
4. Cells do not secrete protein, of accumulate vesicles but have whorls of endoplasmic reticulum
5. Cells do not secrete protein and the ER looks fairly normal but there’s a curious lack of Rough ER
In: Biology
1. The ste2 mutation is a defect in the:
a. |
Mating factor receptor |
|
b. |
G Protein |
|
c. |
Kinase complex |
|
d. |
Cell arrest factor |
2. Tight junctions ______________________.
a. |
Allow small, water-soluble molecules to pass from cell to cell |
|
b. |
Interact with the intermediate filaments inside the cell. |
|
c. |
Prevent the movement of molecules between cells. |
|
d. |
Prevent the movement of molecules between cells. |
3. A neuron and a white blood cell have very different functions. These differences are possible because: ______. (read carefully)
a. |
The proteins found in a neuron are completely different from the proteins found in a white blood cell. |
|
b. |
The neuron and the white blood cell within an individual have different genomic DNA. |
|
c. |
The neuron and white blood cells express different mRNAs and proteins. |
|
d. |
Neurons and white blood cells do not need to transcribe and translate genes. |
In: Biology
Cell Cycle: Events
Name the cell cycle stage in which each event takes place. Each answer choice is used once and only once.
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In: Biology
compare and contrast the bacteriophage replication cycle and the animal virus replication cyle. name 3 differences and what they have in common.
In: Biology
What are some reasons a bacteriophage plaque assay might not be successful?
In: Biology
there are 3 different ways bacteria can develop multi drug antibiotic resistance. explain how each method works.
In: Biology
Name and describe the 5 morphological traits that almost all primates have with human beings
Name and describe the 3 main behavioral traits that almost all primates have with humans
In: Biology
Suggest 3 specific and distinct cellular/molecular process that an anti inflammatory drug could taeget in order to reduce tissue swelling due to inflammation. brefly explain why each should be effective
3 marks.
In: Biology
True or False and why?
In: Biology