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Multiple choice biochemical polymers polymerisation chemistry

A nucleotide consists of

  1. carbon sugar

  2. nitrogen containing base

  3. phosphoric acid

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A nucleotide is made up of the following
Sugar ring, base (adenine, guanine, cytosine, thymine/uracil), phosphate molecule.
The sugar ring is made up of carbon atoms. The bases are nitrogenous. So, all of these are true.

Multiple choice biochemical polymers polymerisation chemistry

The replication of DNA can be catalyzed by:

  1. protein

  2. enzyme

  3. bacteria

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

The replication of $DNA$ can catalyzed by an enzyme. Many enzymes are involved during this process such as DNA helicase, DNA ligase, DNA polymerase etc. Each enzyme has a specific function during replication.

Multiple choice biochemical polymers polymerisation chemistry

Emperical formula of glucose is 

  1. ${C _6}{H _{12}}{O _6}$
  2. $\;{C _3}{H _6}{O _3}\;$
  3. $\;{C _2}{H _4}O\;\;\;\;$
  4. $C{H _2}O$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The empirical formula is the simplest whole-number ratio of atoms in a compound. For glucose (C6H12O6), the ratio of C:H:O is 1:2:1, resulting in CH2O.

Multiple choice biochemical polymers polymerisation chemistry

Which among the following sequence defines Ribonucleotide?

  1. Ribose sugar $+$ Nitrogenous base
  2. Ribose sugar $+$ Protein
  3. Ribose sugar $+$ Phosphoric acid
  4. Ribonucleoside $+$ Phosphate group
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A ribonucleotide consists of a ribonucleoside plus a phosphate group attached to it. A ribonucleoside itself is made of a ribose sugar and a nitrogenous base.

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.