BIOLOGY TIMES — January 2018

(ff) #1

  1. Receptor sites for neurotransmitters are present in
    (a) Pre-synaptic membrane
    (b) Tips of axons
    (c) Post-synaptic membrane
    (d) Membranes of synaptic vessels

  2. Which of the following hormones are concerned
    with osmoregulation?
    (a) ADH and Thyroxine
    (b) Aldosterone and Oxytocin
    (c) Oxytocin and Glucocorticoids
    (d) All cortisols
    35.The sexually transmitted diseases which is
    commonly transmitted by a bacterium is
    (a) Kala azar (b) African sleeping sickness
    (c) Syphilis (d) Trichomoniasis

  3. Ornithine cycle performs
    (a) ATP
    (b) Urea formation in spleen
    (c) Urea formation in liver
    (d) Urine formation in liver

  4. The figure given below shows a small part of
    human lung where exchange of gas takes place.
    In which of the options given below, the one part
    A,B, C or D is correctly identified along with its
    function.


(a) A – Alveolar cavity – main site of exchange of
respiratory gases
(b) D – Capillary wall – exchange of gases takes
place here
(c) B – Red blood cell – transport of mainly
haemoglobin
(d) C – Arterial capillary – passes oxygen to
tissues


  1. Which organ helps in absorption of leftover
    vitamins, water and salt?
    (a) Liver (b) Lungs
    (c) large intestine (colon) (d) Skin

  2. Proctodaeum in rabbit is:
    (a) Embryonic intestine
    (b) A part of large intestine lined by ectoderm


(c) A part of large intestine lined by endoderm
(d) A part of large intestine lined by mesoderm


  1. Identify the compound shown in figure. Name the
    labels marked 1-4.


(a) ADP, 1-adenine, 2-ribose, 3-second energy
rich bond
(b) ATP, 1-guanine, 2-deoxyribose, 3-first energy
rich bond
(c) ATP, 1-adenine, 2-ribose, 3-third energy
rich bond
(d) ATP, 1-cytosine, 2-ribose, 3-first energy rich
bond


  1. Hydrolysis of protein would yield:
    (a) Amino acids (b) Peptide bonds
    (c) Monosaccharides (d) Polysaccharides

  2. Breast cancer is the example of .............disease
    (a) Deficiency (b) Hormonal
    (c) Allergic (d) Malignant

  3. Arbor vitae is
    (a) Tree-like structure in cerebrum
    (b) Tree of life in cerebellum
    (c) End part of spinal cord
    (d) None of the above

  4. Identify the mismatched pair
    (a) Making of curd from milk – Autotrophic
    bacteria
    (b) Production of antibiotics – Heterotrophic
    bacteria
    (c) Recycling of nutrients like nitrogen –
    Chemosynthetic autotrophic bacteria
    (d) Atmospheric nitrogen fixation – Nostoc

  5. Which of the following is not correct?
    (a) The brown adipose tissue cell has a single
    large droplet surrounded by a small
    amount of cytoplasm whereas the white
    adipose tissue cell has many small droplets
    of fat suspended in a larger amount
    cytoplasm.
    (b) Brown fat cells contain comparatively more
    mitochondria, than white fat cells.
    (c) Brown fat has a larger capacity for
    generating heat than white fat.
    (d) Brown fat is mainly found in new born
    mammals.

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