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On average, how many amino acids engaged in predominantly hydrophobic ?-helices does it take to cross the hydrophobic part of the membrane?A) about 10 amino acidsB) about 20 amino acidsC) at least 40 amino acidsD) about 2 - 3 amino acidsE) None of these are correct.
11. In a protein sequence, which repeated sequence over a twenty amino acid stretch would most likely lead to insertion of a transmembrane domain into a lipid bilayer.A) Serine-Threonine-Alanine-HistidineB) Glycine-Proline-Proline-SerineC) Valine-Leucine-Iosleucine-LeucineD) Arginine-Lysine-Proline-ArginineE) Proline-Lysine-Proline-AlanineExplain:12. Which group of amino acids would most likely be found in an enzyme active site?A) Serine-Threonine-Alanine-HistidineB) Glycine-Proline-Alanine-SerineC) Valine-Leucine-Iosleucine-SerineD) Histidine -Lysine-Glutamic Acid -ArginineE) Proline-Lysine-Glycine-AlanineExplain:22. During isoleucine synthesis, excess end product of the metabolic pathway shuts down the pathway.How does this negative feedback benefit the cell?A) Decreases the levels of threonineB) Increases the amount of end product.C) Prevents a cell from wasting chemical resourcesD) Increases the activity of threonine deaminaseE) Increases the availability of glycine in the cell.
After learning the concepts of dry matter and as fed, you realize you have been spending a lot of money on canned dog food and want to switch to dry food for your pet.
give the main functions of microfilaments in the cell.
The time-of-entry mapping method was used to determine the first five markers transferred from each Hfr during a synchronized conjugation experiment. The markers and their transfer order form each Hfr are shown below.
If two organisms each with the genotypes TtGg mate what is the probability that they will produce a child with the dominant phenotype for height and recessive phenotype for colour.
Jimmy, a new undergraduate researcher in the lab, is told to make a vector having a copy of the CELLBIO gene from Dr. Acosta's genome as well as a selectable gene, Ampr.
We require to make 200 mL of a 0.1 aqueous glycerol solution. In lab, we only have a dry glycerol powder, so you will require to make a 1.0M stock solution before you make the dilution.
What substance is known as the "spreading factor?" How does the "spreading factor" aid an organism in its quest to penetrate the host cell? What is the dissimilarity between net primary production and net primary productivity.
How can the photosynthesis process be enhanced to fix more CO2 than normal and plant productivity could be increased.
CC DD and cc dd individuals were crossed and hte F1 generation was backcrossed to get cc dd parent. 903 Cc Dd, 897 cc dd, 98 Cc dd. c and d are 10 m.u apart.
Discuss how many molecules of histone 2A would be required in a typical human cell just after the completion of S phase, assuming an average nucleosome spacing of two hundred bp?
Explain the plant life, animal life, and geology of the ecosystem in the area in which you live. What populations and communities are there? How dependent is your community on this ecosystem? What are the limiting factors of ecosystem.
The bacteriophage genome consists primarily of genes encoding proteins that make up the head, collar and tail, and tail fibers. When these genes are transcribed given phage infection,
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