41.

Select the correct pair of microorganism and the product obtained from it.

• Monascus purpureus- produces large holes in Swiss cheese.

• Saccharomyces cerevisiae - used for making wine and beer after distillation

• Streptococcus - produces streptokinase which is used to remove clots.

• Aspergillus niger - produces citric acid and butyric acid.

Choose the correctly matched pair from the following.

• Gonorrhoea, hepatitis B- sexually transmitted diseases

• AIDS, gonorrhoea - viral infection

• Diphtheria, ringworm - fungal infection

• Diphtheria, tuberculosis - protozoan infection

Select the correct sequence for Homo erectus

• Erectus $\to$ homo $\to$ primata $\to$ chordata $\to$ animalia

• Homo $\to$ erectus $\to$ primata $\to$ animalia $\to$ chordata

• Homo $\to$ erectus $\to$ primata $\to$ chordata $\to$animalia

• Erectus$\to$ homo$\to$ animalia$\to$ primata$\to$chordata

Identify the give figure and select the correct option

• Neutrophil- phagocytic cell which destroy foreign organisms entering the body.

• Eosinophil- their number increases during allergic infection.

• Lymphocyte - small sized non-motile and non-phagocytic.

• Monocyte - motile and phagocytic in nature.

Which antibiotic has bactericidal effect

• Erythromycin

• Streptomycin

• Penicillin

• Chloramphenicol

Which of the following statements is not true

• The biodiversity decreases with increasing latitude.

• The biodiversity decreases with increasing altitude.

• The fishes show greatest biodiversity among vertebrates. 

• The biodiversity of bryophytes is greater than that of angiosperms

Which of the following options consist of nonessential amino acids only

• Valine, leucine, glycine, alanine

• Glycine, serine, proline, glutamic acid

• Proline, aspartic acid, glutamic acid, methionine

• Cysteine, tyrosine, alanine, isoleucine

Photochemical smog formed in congested metropolitan cities mainly consists of

• ozone, peroxyacyl nitrate and NO_x

• smoke, peroxyacyl nitrate and SO₂

• hydrocarbons, SO₂ and CO₂

• hydrocarbons, ozone and SO₂

How are transformants selected from nontransformants

• Presence of more than one recognition site in the vector DNA.

• Presence of alien DNA into the vector DNA results into insertional inactivation of selectable marker.

• Antibiotic resistance gene gets inactivated due to insertion of alien DNA.

• Both (b) and (c).

Which of the following is not a character of cancerous cells in our body

• Contact inhibition 

• Neoplasia

• Metastasis

• Inability for differentiation