Biology Test 2 (Part - I)

Galactose is absorbed most rapidly through the mucosal cells.

All animals require a medium for respiration is a correct respiration.

The Placenta is a hugely important endocrine organ, producing many hormones which affect the status of pregnancy and the maternal physiology. The Placenta is a hugely important endocrine organ, producing many hormones which affect the status of pregnancy and the maternal physiology.

This is because some glucose is used up in respiration of kidney cells.

The interventricular foramen, also known as foramen of Monro, is part of the ventricular system and the connection between the third ventricle and the lateral ventricles.

Formation of fertilization membrane is a sort of defence reaction, primarily meant to prevent entrance of more than one sperm.

During transmission of nerve impulse, the potentials on inside of membrane has the first negative, then positive and back negative types of charges.

In a tadpole larva of frog, if thyroxine is prevented from mixing with blood. It will lead to postponement of metamorphosis.

Sweating while it is very hot is not a conditioned reflex.It is one of homeostatic function of body to maintain body temperature.

Acetylcholine, nor-adrenaline, dopamine are all neurotransmitters.

Histamine is a natural substance produced by the body and is also present in many foods. It is released by the body during times of stress and allergy.

Streptokinase is used to dissolve blood clots that have formed in the blood vessels. Streptokinase belongs to a group of medications known as fibrinolytics, and complexes of streptokinase with human plasminogen can hydrolytically activate other unbound plasminogen by activating through bond cleavage to produce plasmin.

Corpus luteum,is a yellow hormone-secreting body in the female reproductive system. It is formed in an ovary at the site of a follicle, or sac, that has matured and released its ovum, or egg, in the process known as ovulation.

If we take food rich in lime juice, then action of ptyalin on starch is reduced as ptyalin becomes inactive at acidic pH.

The placenta is an endocrine gland that is only present during pregnancy.It produces human chorionic gonadotropin (hCG), progesterone, estrogen, and human placental lactogen (hPL).

Glaucoma is a disease that damages your eye's optic nerve. It usually happens when fluid builds up in the front part of your eye. That extra fluid increases the pressure in your eye, damaging the optic nerve.

In ageing, there is increase in calcium content of arteries and cartilage.

Fourteen days after beginning its growth, and just before leaving the ovary, the primary oocyte will finish its first meiotic division and become a secondary oocyte.

Pyrogen is a substance, as a thermostable bacterial toxin, that produces a rise in temperature in a human or animal.
But they are actually released by white blood cells.

Ruffini corpuscles respond to sustained pressure and show very little adaptation.
Ruffinian endings are located in the deep layers of the skin, and register mechanical deformation within joints, more specifically angle change, with a specificity of up to 2.75 degrees, as well as continuous pressure states.

Cleavage divisions do not bring any appreciable increasse in the mass of protoplasm in the developing embryo, but there is a marked increase in the chromosomal DNA contents of its cells.

a- 3 b- 1 c- 2 is a correct answer.

In the tissues, high concentrations of carbon dioxide decreases the affinity of haemoglobin to oxygen but increases its affinity to hydrogen.

it is the first fecal excretion of a newborn child, composed chiefly of bile, mucus, and epithelial cells.

(i) - (B), (ii) - (D), (iii) - (A), (iv) - (C) is the correct answer.