A bacterial histidine mutant was plated on minimal medium and a single colony grew. You decide to sequence the histidine biosynthetic gene of the revertant and discover that the original mutation is still present.  This colony must have been able grow due to a

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#Question id: 33241

#Unit 1. Molecules and their Interaction Relevant to Biology

Carbonic anhydrase contains an essential Zn²⁺ ion which is involved in

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#Question id: 14488

#Unit 13. Methods in Biology

A man and his wife appear for an interview for two posts. The probability of the husband's selection is 1/7 and that of the wife’s selection is 1/5. The probability that only one of them will be selected is

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#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;

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

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#Question id: 12712

#Unit 6. System Physiology – Plant

ROS using respiratory burst oxidase homolog (RBOH) or NADPH  oxidase for Self- generation mechanism by some other processes , which are involved in ROS generation such as,

A) The amino-terminal cytoplasmic domain of RBOH proteins contains four serines (Ser) that can be phosphorylated by CDPKs and two EF hands that can bind calcium directly 

B) As ROS generation such as  H2O2,  by putting electron for oxidising  oxygen into the free radicals, these electron generation by oxidising NADPH and FADH2 in the cytosolic carboxy terminal of RBOH protein

C) The elevation of calcium and ROS levels during the early stages of the stress response activates protein kinases and phosphatases

D) ROS activated Ca2+ channel leads to Ca2+  influx from apoplastic space  to cytosol

Arrange the correct order of  following steps involve in ROS generation;

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#Question id: 175

#Unit 1. Molecules and their Interaction Relevant to Biology

The ionic charges associated with a protein molecule are ________.