Which of the following functions is not performed by secretions from salivary glands?

(A)Digestion of disaccharides
(B)Control bacterial population in mouth
(C)Digestion of complex carbohydrates
(D)Lubrication of oral cavity

Which of the following is not a connective tissue?

(A)Neuroglia
(B)Blood
(C)Adipose tissue
(D)Cartilage

Detritivores breakdown detritus into smaller particles. This process is called:
(A)Decomposition
(B)Catabolism

(C)Fragmentation
(D)Humification

Select the incorrect statement with reference to mitosis :
(A)Splitting of centromere occurs at anaphase.
(B)All the chromosomes lie at the equator at metaphase.

(C)Spindle fibres attach to centromere of chromosomes.
(D)Chromosomes decondense at telophase.

If the length of a DNA molecule is `` 1.1 `` metres, what will be the approximate number of base pairs?
(A) `` 6.6 \times 10^{6} \,bp ``

(B) `` 3.3 \times 10^{9}\, bp ``
(C) `` 6.6 \times 10^{9}\, bp ``
(D) `` 3.3 \times 10^{6}\, bp ``

At which stage of life the oogenesis process is initiated?
(A)Adult
(B)Puberty

(C)Embryonic development stage
(D)Birth

Which of the following is not a desirable feature of a cloning vector?

(A)Presence of two or more recognition sites
(B)Presence of origin of replication
(C)Presence of a marker gene
(D)Presence of single restriction enzyme site

Select the incorrect statement regarding synapses:

(A)Impulse transmission across a chemical synapse is always faster than that across an electrical synapse.
(B)The membranes of presynaptic and postsynaptic neurons are in close proximity in an electrical synapse.
(C)Electrical current can flow directly from one neuron into the other across the electrical synapse.
(D)Chemical synapses use neurotransmitters

Statements related to human Insulin are given below. Which statement(s) is/are correct about genetically engineered Insulin ? (a) Pro-hormone insulin contain extra stretch of C-peptide (b) A-peptide and B-peptide chains of insulin were produced separately in E.coli, extracted and combined by creating disulphide bond between them. (c) Insulin used for treating Diabetes was extracted from Cattles and Pigs. (d) Pro-hormone Insulin needs to be processed for converting into a mature and functional hormone. (e) Some patients develop allergic reactions to the foreign insulin. Choose the most appropriate answer from the options given below:
(A)
(c),
(d) and
(e) only
(B)
(a),
(b) and
(d) only

(C)
(b) only
(D)
(c) and
(d) only

Which of the following are not the effects of Parathyroid hormone? (a) Stimulates the process of bone resorption (b) Decreases `` Ca ^{2+} `` level in blood (c) Reabsorption of `` Ca ^{2+} `` by renal tubules (d) Decreases the absorption of `` Ca ^{2+} `` from digested food (e) Increases metabolism of carbohydrates Choose the most appropriate answer from the options given below:
(A)
(b) and
(c) only
(B)
(a) and
(c) only

(C)
(b),
(d) and
(e) only
(D)
(a) and
(e) only

Which of the following statements is not true?

(A)Flippers of penguins and dolphins are a pair of homologous organs
(B)Analogous structures are a resùlt of convergent evolution
(C)Sweet potato and potato is an example of analogy
(D)Homology indicates common ancestry

Which one of the following statements is correct?
(A)Increased ventricular pressure causes closing of the semilunar valves.
(B)The atrio-ventricular node(AVN) generates an action potential to stimulate atrial contraction
(C)The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria

(D)Blood moves freely from atrium to the ventricle during joint diastole.

Match List - I with List - II.

Select the incorrect statement with respect to acquired immunity.

(A)Acquired immunity is non-specific type of defense present at the time of birth.
(B)Primary response is produced when our body encounters a pathogen for the first time.
(C)Anamnestic response is elicited on subsequent encounters with the same pathogen.
(D)Anamnestic response is due to memory of first encounter.

Ten E.coli cells with `` { }^{15} N - dsDNA `` are incubated in medium containing `` { }^{14} N `` nucleotide. After `` 60 `` minutes, how many E.coli cells will have DNA totally free from `` ^{15}N `` ?
(A)80 cells
(B)20 cells
(C)40 cells

(D)60 cells