NEET Zoology Practice Papers-2

New strains of bird flu viruses are most likely to arise in far east because of-

Environmental mutagens that cause changes in viral RNA

Common hosts (ducks, chicken, pigs) live in close proximity to humans

Over population in these areas

Sickle cell anemia is an example of-

both

frameshift mutation

Point mutation

Which of the following correctly explains a phase/ event in cardiac cycle in a standard electro cardiogram?

Q-wave: - Represents depolarisation of atria

P-wave: - Marks the beginning of ventricular systole

T-wave: - Represents ventricular repolarisation

Which of the following is a non-specific defense?

The B-cell response

The T-cell response

The inflammatory response

Antigen binding site of antibody molecule is made up of

Variable region of light chain

Variable region of heavy chain

Variable regions of both light and heavy chains, present at N-terminal end

Which hormone is secreted when a person is running up the stairs, he experiences increased rate of heart beat, respiration and cardiac output?

Aldosterone and cortisol

Insulin and glucagon

Adrenaline and nor-adrenaline

Hisardale, a new breed of sheep developed in Punjab is an example of-

Cross-breeding

Outcrossing

Inbreeding

A DNA library is ---

A collection of all genes sequenced so far

A DNA fragment inserted into the vector

A collection of DNA fragments that make up the entire genome of a particular organism

Tick the incorrect match:-

Henle’s Loop :- Reabsorption in this segment is minimum

ADH: - It decreases blood pressure, decreases glomerular blood flow and thereby the GFR

PCT :- 70 to 80 percent of electrolytes and water are reabsorbed by this segment

Which of the following is the most abundant protein in animals?

haemoglobin

collagen

keratin

False statement w.r.t. HCG is---

If fertilisation occurs, the corpus luteum is rescued from regression by hCG, produced by the placenta

High levels of hCG in uterus stimulates endometrial thickening

High levels of circulating hCG, stimulate estrogen and progesterone synthesis

which of the following drug is anti-anxiety in nature?

Barbiturates

Both

Benzodiazepines

If the sodium-potassium pump of a neuron failed, what effect would this likely have on the neurons functions?

The neuron could not conduct another action potential until the resting potential was fully restored

The concentration of sodium ions would be higher outside the cell and potassium ions would be higher inside

The concentration of positive and negative ions would cause the neuron be negative inside

One of the important consequence of geographical isolation is :-

preventive speciation

speciation through reproductive isolation

random creation of new species

How is the digestion of fats different from that of proteins and carbohydrates?

Fat digestion occurs in the small intestine, and the digestion of protein and carbohydrates occurs in the stomach

Fats are absorbed into the cells as fatty acids and monoglycerides but are then modified for the absorption into lymph while aminoacids and glucose are not modified further

Fats enter the hepatic portal circulation but proteins and carbohydrates enter the lymphatic system

What is the role of Ca2+ ions in muscle contraction?

It binds to tropomyosin, enabling troponin to release ATP

It binds to troponin, enabling the tropomyosin to move, thereby unmasking the active sites for myosin

It binds to troponin, enabling tropomyosin to release ATP

Who was the first member of the genus Homo?

Homo sapiens

Homo erectus

Homo habilis

What is the term used for inserting a healthy copy of a gene into a person who has a defective gene?

Gene therapy

Polymerase chain reaction (PCR)

Recombinant DNA

Which of the following statements is not true?

Aldosterone is produced by the anterior lobe of pituitary in response to high levels of sodium ions in blood plasma

Uric acid is least soluble and least toxic of the nitrogenous products

ADH makes the collecting duct more permeable to water

Find the incorrect match.-

IUI - Intrauterine insemination

ICSI - Sperms are directly injected into ovum

ZIFT - Embryos with more than eight blastomeres are transferred into the fallopian tube

The HIV-virus is particularly dangerous because it attacks

60% to 80% circulating T-cells in the body

Helper T-cells

All of these

Cells with CD4 + coreceptor

Which of the following cannot be used as a vector?

both

Bacterium

Plasmid

What type of blood contains B-antibodies (but not A antibody), in the plasma and lacks Rh-antigens?

B- negative

AB- negative

A- negative

In vertibrates, the notochord is modified into -

centrum of vertebrae

vertebral column

both

Which is not involved in the knee jerk reflex?

Motor neuron

Muscle spindle

An interneuron

NEET Zoology Practice Papers-2

New strains of bird flu viruses are most likely to arise in far east because of-

Sickle cell anemia is an example of-

Which of the following correctly explains a phase/ event in cardiac cycle in a standard electro cardiogram?

Which of the following is a non-specific defense?

Antigen binding site of antibody molecule is made up of

Which hormone is secreted when a person is running up the stairs, he experiences increased rate of heart beat, respiration and cardiac output?

Hisardale, a new breed of sheep developed in Punjab is an example of-

A DNA library is ---

Tick the incorrect match:-

Which of the following is the most abundant protein in animals?

False statement w.r.t. HCG is---

which of the following drug is anti-anxiety in nature?

If the sodium-potassium pump of a neuron failed, what effect would this likely have on the neurons functions?

One of the important consequence of geographical isolation is :-

How is the digestion of fats different from that of proteins and carbohydrates?

What is the role of Ca2+ ions in muscle contraction?

Who was the first member of the genus Homo?

What is the term used for inserting a healthy copy of a gene into a person who has a defective gene?

Which of the following statements is not true?

Find the incorrect match.-

The HIV-virus is particularly dangerous because it attacks

Which of the following cannot be used as a vector?

What type of blood contains B-antibodies (but not A antibody), in the plasma and lacks Rh-antigens?

In vertibrates, the notochord is modified into -

Which is not involved in the knee jerk reflex?

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