Sickle cell anemia was discovered by_____.

1. 1. Vernon Ingram
   2. Sanger
   3. Miescher
   4. none of these

Gaseous exchange in birds occurs at level of_____.

1. 1. Alveoli
   2. Parabronchi
   3. Air sacs
   4. Bronchi

A group of very similar inter breeding organisms constitutes?

1. 1. Biosphere
   2. Ecosystem
   3. Species
   4. Population

Under a compound microscope chromosome is made of arms and_____.

1. 1. Centromere
   2. Centromere
   3. Centrosome
   4. Chromatid

Which of the vascular channels are related to Juxtramedullary nephrous only?

1. 1. Afferent and efferent arterioles
   2. Vasa recta
   3. Peritubualr capillaries
   4. Vasa nervosa

Breaking of terminal phosphate of ATP releases about _____Kcal of energy.

1. 1. 7.3
   2. 6.1
   3. 6.3
   4. 7.1

Which of the following statement is incorrect5 for fats containing unsaturated fatty acid_____.

1. 1. They contain double bond
   2. They are lighter than water
   3. They are usually solid at room temperature
   4. Their specific gravity is less than 1

In a hot summer after noon, if your body’s Homeostatic machinery keep your internal temperature quite lower than that of external than this is an example of_____.

1. 1. Positive feed back
   2. Feed back
   3. Osmoregulation
   4. Negative feed back

The study of nature is called_____.

1. 1. Atom
   2. Science
   3. Molecule
   4. Element

Which of the following cell organelles does not contain DNA?

1. 1. Nucleus
   2. Chloroplast
   3. Lysosomes
   4. None of these