Tag: biochemical polymers

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Questions Related to biochemical polymers

Multiple choice biochemical polymers polymerisation chemistry

A nucleotide is made up of:

  1. a base and sugar

  2. a base and phosphate unit

  3. a sugar and phosphate unit

  4. a sugar, a base and a phosphate unit
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sugar + Base + a phosphate unit constitute one nucleotide.
This is the definition of a nucleotide.

Multiple choice biochemical polymers polymerisation chemistry

The sequence between nucleotide triplets and the amino acids is called

  1. transcription

  2. duplication

  3. genetic code

  4. gene
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Genetic code is the sequence between nucleotide triplets and the amino acids. The whole phenomenon is called as Central Dogma. It's a really important phenomenon and a lot of cell organelles are involved : DNA, mRNA, Ribosomes, etc.

Multiple choice biochemical polymers polymerisation chemistry

The genetic language of nucleotides translates into language of:

  1. carboxylic acids

  2. amino acids

  3. ketones

  4. aldehydes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During protein synthesis, the following process occurs:
The information stored in DNA is coded in the form of RNA in a process called transcription.
Next, the RNA code is processed in ribosomes and ultimately proteins (made of amino acids) are made. So, B is correct.

Multiple choice biochemical polymers polymerisation chemistry

The sugar unit present in the nucleotides of RNA is :

  1. D - ribulose.

  2. L - ribose.

  3. D - ribose.

  4. L - ribulose.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

RNA (Ribonucleic acid) contains the sugar D-ribose, whereas DNA contains 2-deoxy-D-ribose.

Multiple choice biochemical polymers polymerisation chemistry

Which of the following is not present in nucleotide?

  1. guanine

  2. cytosine

  3. adenine

  4. tyroxine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Tyroxine is not present in nucleotide. Nucleotide consists of adenine, guanine, cytosine, thymine, uracil, molecule of sugar and one of phosphoric acid.

Multiple choice biochemical polymers polymerisation chemistry

The relationship between the nucleotide triplets and the amino acids is called:

  1. translation

  2. transcription

  3. replication

  4. a genetic code
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The relationship between the nucleotide triplets and the amino acids is called a genetic code.
This determines the sequence of amino acids in the proteins that are synthesized.

Multiple choice biochemical polymers polymerisation chemistry

Match the column I with column II and mark the appropriate choice

Column I Column II
(A) Peptide linkage (i) Inversion
(B) Nucleic acid (ii) Polysaccharide
(C) Hydrolysis of cane sugar (iii) Proteins
(D) Starch (iv) Nucleotides
  1. (A) $\rightarrow$ (i); (B) $\rightarrow$ (i); (C) $\rightarrow$ (iii); (D) $\rightarrow$ (iv)
  2. (A) $\rightarrow$ (iv); (B) $\rightarrow$ (i); (C) $\rightarrow$ (ii); (D) $\rightarrow$ (iii)
  3. (A) $\rightarrow$ (iii); (B) $\rightarrow$ (iv); (C) $\rightarrow$ (i); (D) $\rightarrow$ (ii)
  4. (A) $\rightarrow$ (i); (B) $\rightarrow$ (iii); (C) $\rightarrow$ (iv); (D) $\rightarrow$ (ii)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$A.$ Proteins have peptide linkage

$B.$ Neucleic acid has Neucleotides
$C.$ Hydrolysis of cone sugar is inversion
$D.$ Starch is a polysaccharide.

Multiple choice biochemical polymers polymerisation chemistry

RNA molecules are of three types which are based on their different functions. These are:

  1. messenger RNA, translational RNA, structural RNA

  2. cytosine RNA, nucleoside RNA, nucleotide RNA

  3. messenger RNA, ribosomal RNA, transfer RNA

  4. primary RNA, secondary RNA, tertiary RNA
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
There are 3 types of RNA, each encoded by its own type of gene:
mRNA - Messenger RNA $\rightarrow$ Encodes the amino acid sequence of a polypeptide.
tRNA - Transfer RNA $\rightarrow$ Brings amino acids to ribosomes during translation.
rRNA - Ribosomal RNA $\rightarrow$ With ribosomal proteins, makes up the ribosomes, the organelles that translate the mRNA.
Multiple choice biochemical polymers polymerisation chemistry

Maximum amount of RNA is found in:

  1. nucleolus.

  2. chloroplast.

  3. ribosomes.

  4. cytoplasm.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Maximum amount of RNA is present in Nucleolus.

Nucleolus is present in Nucleus.

Multiple choice biochemical polymers polymerisation chemistry

When adenine is attached to ribose sugar, it is called adenosine. To make a nucleotide from it, it would require?

  1. Oxygenation

  2. Addition of a base

  3. Addition of phosphate

  4. Hydrogenation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Answer:- (C) addition of phosphate

Adenine forms adenosine, a nucleoside, when attached to ribose. It forms adenosine triphosphate (ATP), a nucleotide, when three phosphate groups are added to adenosine.