Chemical Basis Of Life(Cell Biology ) Questions and Answers
Question 1. In presence of an acid, amino group can be ____________
Polarized
Washed away
Protonated
Replaced
Explanation:-
Answer: Option C. -> Protonated Answer: (c).Protonated
Question 2. Carbonic acid and bicarbonate ions buffer which of the following?
Cytosol
Cytoplasm
Blood
Lymph
Explanation:-
Answer: Option C. -> Blood Answer: (c).Blood
Question 3. Buffers usually contain ________________ with its conjugate ____________
weak base, base
strong base, acid
weak acid, base
weak acid, acid
Explanation:-
Answer: Option C. -> weak acid, base Answer: (c).weak acid, base
Question 4. Buffers react with _______________ ions.
hydrogen, hydroxyl
magnesium, calcium
potassium
sodium
Explanation:-
Answer: Option A. -> hydrogen, hydroxyl Answer: (a).hydrogen, hydroxyl
Question 5. Heptoses are __________
sugars
proteins
amino acids
monomers
Explanation:-
Answer: Option A. -> sugars Answer: (a).sugars
Question 6. Fructose is a _____________
aldose sugar
ketose sugar
monosaccharide
polymer
Explanation:-
Answer: Option B. -> ketose sugar Answer: (b).ketose sugar
Question 7. Which types of bonds are found in sugars?
amide
acidic
glycosidic
non-covalent
Explanation:-
Answer: Option C. -> glycosidic Answer: (c).glycosidic
Question 8. The compounds which have same chemical reactivity but structures which are mirror images of each other are known as ____________
isoforms
allotropes
enantiomers
isomers
Explanation:-
Answer: Option C. -> enantiomers Answer: (c).enantiomers
Question 9. Which of the following conventions is used to denote the presence of carbonyl group in left/right in the chemical structure of a carbohydrate?
Positive/ negative
-1/ +1
L/ R
L/ D
Explanation:-
Answer: Option D. -> L/ D Answer: (d).L/ D
Question 10. Enzymes in a cell can distinguish between L and D forms of sugar.
