B cells migrate to the lymphoid follicles, they are directed by chemokine interaction_________, which is secreted by follicular dendritic cells (FDCs)

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#Question id: 10961

#Unit 7. System Physiology – Animal

Over the past 12 weeks, a 75-year-old man with a moderate aortic stenosis has developed shortness of breath and chest pains during exertion. He appears pale. Test of his stool for blood is positive. Laboratory studies show the following: hemoglobin 7.2 g/dL, and mean corpuscular volume 75. A blood smear shows microcytic, hypochromic erythrocytes. Which of the following is the most likely diagnosis?

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#Question id: 24633

#Unit 2. Cellular Organization

Which of the type of reactions performed in Inserting DNA into a phage head

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#Question id: 918

#Unit 1. Molecules and their Interaction Relevant to Biology

Transport of fatty acids from the cytoplasm to the mitochondrial matrix requires:

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#Question id: 20402

#Unit 3. Fundamental Processes

Cluster rule based on template and non-template, according to cluster rule mRNA a should be 

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#Question id: 26450

#Unit 3. Fundamental Processes

Which of the following statements is true regarding bacterial RNA polymerase   

a. Core enzyme can efficiently transcribe both intact and nicked DNA 

b. Sigma destabilizes nonspecifically bound core 

c. Holoenzyme bind tightly to DNA 

d. Higher disassociation rate at lower temperature 

e. Most of the cellular sigma are house keeping gene