answer all of them All of the following are true of enzymes except A-Enzymes inc
ID: 89040 • Letter: A
Question
answer all of them
All of the following are true of enzymes except
A-Enzymes increase the rate of a chemical reaction.
B-Enzymes are not part of the products of a chemical reaction.
C-Enzymes create a chemical reaction.
D-Enzymes are not consumed in a chemical reaction
2-Reverse transcriptase is used to make ______ from an RNA template
3-
Environmental factors that influence microbial growth are (SELECT ALL THE APPELTY )
temperature
gases
pH
osmotic
pressure
radiation
hydrostatic
pressure
4- What is the definition of Generation Time
A-Enzymes increase the rate of a chemical reaction.
B-Enzymes are not part of the products of a chemical reaction.
C-Enzymes create a chemical reaction.
D-Enzymes are not consumed in a chemical reaction
Explanation / Answer
Option D is incorrect about Enzymes
Enzymes are not consumed in chemical reaction enzymes combined with available substrate forming a enzyme-substrate complex which will be later formed into product or protein molecule which used by the organism after creation of product enzyme-substrate complex dissociates into enzyme and substrate and enzyme is again used as precursor for another chemical reaction.
2 Reverse transcriptase enzyme is used to DNA from RNA template by process called as reverse transcription and it is mainly seen in retrovirus like HIV which mainly perform reverse transcription for their division and reproduction.
In this process double stranded DNA formed from single stranded RNA strand
3 Temperature: Temperature is important factor for microbial growth high temperature reduces microbial growth by denaturing enzymes and proteins required for growth at low temperature enzymes and proteins are in active state which again affects growth high growth is seen at room temperature for
25 c-37 c called as optimal temperature where high microbial growth is seen.
Gases: Gases like oxygen also affect the microbial growth microbes growing in presence of oxygen called as oxygenic microbes and microbes growing in absence of oxygen are called as anoxygenic microbes.
Osmotic pressure: Microorganisms grow at high pressure and low pressure microbes growing at high pressure are called as hypertonic and microbes growing at low pressure called as hypotonic organisms.
Radiations: Effect of radiation on microbes can cause mutation in genes which can be lethal to them hence radiation may cause low microbial growth.
PH: Bacteria generally grow at normal PH ranging from 4.5 to 7.5 which are called as neutrophiles and microbes growing ate PH above 8 to 14 are called as alkalophiles and microbes growing at PH from 0-4.5 are called as acidophiles.
Hydrostatic Pressure: Bacteria are affected by hydrostatic pressure microbes growing at hydrostatic pressure are called barotolerant which can survive high pressure changes. Microbes at moderate pressure are called as barophiles.
4 Generation Time: The generation time is the average time between two consecutive generations in lineages of a population like in bacteria a generation time is 20 minutes every 20 minutes new generation microbial cells are produce.
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