Which of the following is a mechanism for down regulation of signaling from G protein-coupled receptors?

a. a change in the Kd of the receptor-hormone complex

b. proteolysis of the Gα subunit                     

c. hydrolysis of cAMP to 5´-AMP

d. dephosphorylation of adenylyl cyclase

TLS Online TPP Program

#Question id: 13002

#Unit 3. Fundamental Processes

Where in a eukaryotic cell do you think you would find each of the following proteins residing when it is actively performing its function. Be as specific as you can in terms of subcellular location.

Match the following with the correct subcellular location;

Column 1	Column 2
I) Polymerases	a) In the cytoplasm
II) Ribosomal proteins	b) Inside the plasma membrane.
III) DNA ligase	c) In the mitochondrial matrix
IV) protein that allows ions to pass in and out of the cell	d) In the nucleus of cells
V) Activator protein	e) Inside the nuclear membrane
VI) an enzyme in the Krebs/TCA cycle
VII) a protein that forms a channel through which mRNAs can be exported into the cytoplasm

TLS Online TPP Program

#Question id: 13003

#Unit 8. Inheritance Biology

If 200 meiocytes with AaBb and   80 meiocytes  undergoes to single crossing over between  gene A and B. What will be the chance of crossing over and what is the recombination frequency of the gametes?

TLS Online TPP Program

#Question id: 13004

#Unit 8. Inheritance Biology

If the 120 meiocytes undergoes to the single crossing over then what will be the correct prediction about this ;

TLS Online TPP Program

#Question id: 13005

#Unit 8. Inheritance Biology

50 meiocytes with the genotype AaBb has 5% recombinational frequency in their gametes A and B, then how many meiocytes undergoes to the single crossing over ?

TLS Online TPP Program

#Question id: 13006

#Unit 10. Ecological Principles

According to the logistic growth equation dN/dt = rmaxN(K - N)/K

TLS Online TPP Program

#Question id: 13007

#Unit 10. Ecological Principles

A population's carrying capacity