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Today test of 5 mcqs with answers explained

 1-Total no of particles in an atom of sulphur (A=16  and Z=8) are 8 16 24 3 2)The path followed by projectile is ?? A hyperbolic  B circular C translatory  D not 3)How does an enzymes increases the rate of a reaction? A)by bringing the reacting molecule into precise orientation B)by increasing the rate of tandom collisions of molecule C)by shifting the point of equilibrium of the reaction D)by supplying the energy required to starr the reaction 4) Isobutyl alcohol on oxidation produces a carbonyl compound is called A. Butanal B. Methyl propanal C. Ethanal D. None 5) It contains only thick filament A. I band  B. H zone C. A band D. Sarcomere .. ..........your answers in comment section  .. .. Key with explaination .. .... ....Ans is 24 1)Basically there are three sub atomic particles and for our convince we consider two particles as major  but in general they are three  Electron+proton+neutron S0 total 16+8=24 (2nd) Answer is (none) parabolic  Trajectory path is followed by rocked  (3r
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Smallest part of hindbrain

  Smallest part of hindbrain is A. Pons  B. Cerebellum C. Medulla oblongata D. Amygdala .... it's Medulla oblongata not pons  See book picture and also keep in mind their functions and explaintion Got it 
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Menstrul cycle

 If menstrual cycle consists of 60 days then day of ovulation will be :  a) 15  b) 30.  C) 45.  d) 46  it's. It's answer is simple 46. Logic it matters not how days it increases from 30 to onwards just minus 14 days and renaming days will be the days of ovulation Your review🤔
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Enzyme Federal mcqs

 1-Allosteric enzymes have.... Major sites  2 3 4 5 .(2 other sites where non comparative inhibitor binds..2 where inhibitor can bind and regulate enzyme action) 2-Optimum pH for enzyme maltase is  4.5 5.5 6.1-6.8 6.7-7 (6.1-6.8...)...Federal book line 3-Optimum pH for enzyme Urease is..  7.8-8.7 7 4.5 8 Ans=7 federal book line  4-In plants enzymes become denatured above.....•C 40 50 60 70 .Ans=60 ftb book line  5-Optimum pH for most enzymes is btw 4-6 6-8 8-10 Neutral  .......Ans=6-8  6-Which environment can denature enzyme  Acidic  Basic Neutral  None...  ......Ans=Acidic 7-Inhibition caused by final end product of reaction is called  Allosteric inhibition  Competitive inhibition  Non competitive inhibition  None.  Alpha answer =allosteric inhibition ..Federal book line 8-Non compitative alter St of.... Enzyme  Active site  Velocity of enzyme action  All.  ......All=Ans.   ..Federal book line 9-Poisions like cyanide,heavy metal ions and insecticides r.....inhibitor Competitive  Non c
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most abundant membrane within cell

 Which of these is the most abundant membrane within a cell  ER Plasma membrane  Golgi membrane Nuclear membrane  Ans is plasma membrane as present in every living cell majority of proteins and lipids Comment below satisfied with answer yes or no? If no then why  U have right to speak 
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Wrong about nucleic acids

 Which is wrong about nucleic acids? (a) DNA is single stranded in some viruses (6lb) RNA is double stranded occasionally. (c)Length of one helix is 45 A in B-DNA. (d) One turn of Z-DNA has 12 bases. In our books it's B DNA which has 10 base pairs but in options it's Z DNA which has 12 base pairs  In some viruses its single stranded like   reverse transcriptase kia krta .ss RNS ko ss DNA me convert krta So option C is wrong it's 34A
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