Biomolecules practice · Mixed difficulty

Which of the following statements are incorrect?
I. Left end of a polysaccharide is called non-reducing end while right end is called reducing end
II. Starch and glycogen are branched molecules
III. Starch and glycogen are the reserve food materials of plants and animals, respectively
IV. Starch can hold iodine molecules in its helical secondary structure but cellulose being non-helical, cannot hold iodine

One of the similarities between DNA and RNA is that?

$C{H_3} - {\left( {C{H_2}} \right)_{14}} - COOH$ it shows?

A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is ${C_6}{H_{12}}{O_6}$ then what is the formula for the maltose?

Phospholipids are

Which of the following is the simplest amino acid?

Inulin is a polymer of

Enzymes are biocatalysts. They catalyse biochemical reactions.
In general they reduce activation energy of reactions. Many
physico-chemical processes are enzyme mediated. Some
examples of enzyme mediated reactions are given below. Tick
the wrong entry

Hydrolysis of lipid yields?

Steroid hormones are similar in structure to?

Assertion (A): GLUT-4 is one of the essential protein for bioenergetics of the cell.

Reason (R): GLUT-4 enables glucose transport into cell.

${C_6}{H_{12}}{O_6} + A\xrightarrow{\,}\,2{C_3}{H_4}{O_3} + B$

$A$ and $B$ in the above reaction are

Given below are two statements A and B. Choose the correct answer related to the statements.
Statement A: Amino acids are amphoteric in their function.
Statement B: All amino acids are necessary for our body.

Identify wheather the given conditions are anabolic or catabolic
I. Glucose → Lactic acid
II. Amino acids → Proteins

Assertion (A): Glucose is commonest sugar which provides energy on hydrolysis.

Reason (R): Glucose is the precursor of all the types of carbohydrates.

One strand of DNA has sequence of nucleotide 3’ ATTCGCTAT 5’ then other strand of DNA has

Which of the following statements are correct?
I. Relative abundance of carbon and hydrogen with respect to other elements is higher in any living organisms
II. Living organisms have more nitrogen and oxygen per unit mass than inanimate objects (e.g., earth crust)
III. All the elements present in a sample of earth’s crust are also present in a sample of living tissue
IV. Living organisms have more Ca,Mg,Na in them than inanimate object

Analyse the equations given below and select the reaction that belongs to the fourth class of enzyme as per the classification of IUB.

One turn of DNA has nucleotide pairs

You are studying a bacteriophage and found its composition to be A = 22%, T = 28%, G = 20%, C = 30%. What is your conclusion regarding its genetic material?

Which one of the following is widely distributed in a cell?

Feedback inhibition of enzymes is affected by which of the following?

Assertion: Linolenic acid is the precursor of arachidonic
acid.
Reason: Ascorbic acid is a sugar acid having $N{H_2}$ group.

The globular proteins undergo structural changes, in response to extremes of pH or temperature, the process called

Pick the odd statement out

The pitch of DNA molecule is?

Which of the following statements regarding fats is true?

The ‘lock’ and ‘key’ model of enzyme action illustrates that a particular enzyme molecule

Organic acids having a hydrocarbon chain and end in a carboxylic group are called?

Assertion: All enzymes are protein
Reason: RNA can’t act as enzyme