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#Question id: 17659


During your study of the gene for an enzyme you have isolated an amber mutation in the middle of the gene which produces a truncated form of the enzyme. By placing a +1 frameshift mutation a short distance before the amber mutation and a –1 frameshift mutation a short distance after the amber mutation you create a triple mutant that restores expression of a functional, full-length enzyme. 
a) +1 frameshift puts the amber mutation out of frame so that it is no longer read as a stop.
b) -1 frameshift is inserted after the amber so that no longer read as a stop.
c)  -1 frameshift is inserted after the amber to restore the frame of the end of the protein.
d) +1 frameshift puts the amber mutation out of frame so that it restore the frame of the end of the protein.
Which of the following is the correct prediction about the frame shift mutation?

#Unit 13. Methods in Biology
  1. B and D
  2. B and C
  3. A and C
  4. A and D
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#Question id: 28436

#Unit 5. Developmental Biology

Primitive Groove is____

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#Question id: 6952

#Unit 5. Developmental Biology

Which technique is commonly used for gene knock-out in mice?

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#Question id: 27551

#Unit 1. Molecules and their Interaction Relevant to Biology

Glycine at pH 2.34, where there is an equal mixture of +H3N-CH2-COOH and +H3N-CH2-COO-  then the average or net positive charge is 

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#Question id: 28746

#Unit 2. Cellular Organization

In mammalian cells, where does β oxidation occurs?
a) Mitochondria
b) Peroxisomes
c) Endoplasmic reticulum
d) Lysosome

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#Question id: 10465

#Unit 6. System Physiology – Plant

This feature is an adaptive, as the redistribution of chloroplasts within the cells modulates light absorption and prevents photodamage, diagram shows of chloroplast distribution patterns in Arabidopsis palisade cells in response to different light intensities;

                                        

m) A-low light, B-high light, C-darkness

n) A-high light, B-darkness, C-low light

Based on the above light intensities, each shows different chloroplasts position such as,

i) chloroplasts avoid sunlight by migrating to the side walls of palisade cells

ii) chloroplasts move to the bottom of the cell, although the physiological function of this position is unclear

iii) chloroplasts optimize light absorption by accumulating at the upper and lower sides of palisade cells

Which of the following correct combinations shows light intensities and chloroplast movements?