A cup has ${10}^5$ bacterial cells. Each bacterial cell divides in 35 minutes. What shall be the number of bacteria after 175 min?

Which of the following exercises control over transcription:
1.  Operator
2.  Regulator
3.  Promoter
4.  Recon

Transduction in bacteria is carried out by:
1.  Bacteriophage
2.  B.G.A.
3.  Mycoplasma
4.  Rickettsiae

Variations in proteins are due to:
1.  Sequence of amino acids
2.  Number of amino acids
3.  R–group
4.  None

Segments of DNA which can move in a genome:
1.  Transposons
2.  Introns
3.  Exons
4.  Cistrons

Number of base pairs in human chromosomes are:

1. $3 \times {10}^9$

2. $3 \times {10}^7$

3. $6 \times {10}^8$

4. $6 \times {10}^7$

Initiation codon in eukaryotes is:
1.  UGA
2.  CCA
3.  AGA
4.  AUG

Gene is composed of:
1.  Amino acids
2.  Polynucleotide
3.  Fatty acid
4.  Nitrogen bases

The molecular weight of DNA in yeast is:

1. $2.$ $56$ $\times$ ${10}^9$

2.  $0.5$ $$ $\times$ ${10}^9$

3. $7$ $\times$ ${10}^7$

4. $6$ $\times$ ${10}^6$

In inducible operon, regulatory gene synthesizes:
1.  Promoter
2.  Operator
3.  Repressor
4.  Aporepressor