NEET Zoology Practice Papers-2

Which is not involved in the knee jerk reflex?

Muscle spindle

An interneuron

Motor neuron

Which of the following cannot be used as a vector?

Bacterium

Plasmid

both

One of the important consequence of geographical isolation is :-

random creation of new species

speciation through reproductive isolation

preventive speciation

The HIV-virus is particularly dangerous because it attacks

Cells with CD4 + coreceptor

All of these

Helper T-cells

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

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

Insulin and glucagon

Aldosterone and cortisol

Adrenaline and nor-adrenaline

A DNA library is ---

A DNA fragment inserted into the vector

A collection of all genes sequenced so far

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

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

collagen

keratin

haemoglobin

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

A- negative

B- negative

AB- negative

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

Recombinant DNA

Polymerase chain reaction (PCR)

Gene therapy

Who was the first member of the genus Homo?

Homo habilis

Homo sapiens

Homo erectus

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

Both

Benzodiazepines

Barbiturates

Sickle cell anemia is an example of-

Point mutation

frameshift mutation

both

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

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

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

Environmental mutagens that cause changes in viral RNA

Over population in these areas

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

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

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

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

Tick the incorrect match:-

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

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

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

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

Outcrossing

Inbreeding

Cross-breeding

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

In vertibrates, the notochord is modified into -

both

centrum of vertebrae

vertebral column

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

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

High levels of circulating hCG, stimulate estrogen and progesterone synthesis

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

Which of the following is a non-specific defense?

The inflammatory response

The T-cell response

The B-cell response

Find the incorrect match.-

IUI - Intrauterine insemination

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

ICSI - Sperms are directly injected into ovum

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

It binds to troponin, enabling tropomyosin to release ATP

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

It binds to tropomyosin, enabling troponin to release ATP

Which of the following statements is not true?

ADH makes the collecting duct more permeable to water

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

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

NEET Zoology Practice Papers-2

Which is not involved in the knee jerk reflex?

Which of the following cannot be used as a vector?

One of the important consequence of geographical isolation is :-

The HIV-virus is particularly dangerous because it attacks

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

A DNA library is ---

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

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

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

Who was the first member of the genus Homo?

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

Sickle cell anemia is an example of-

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

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

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

Tick the incorrect match:-

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

Antigen binding site of antibody molecule is made up of

In vertibrates, the notochord is modified into -

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

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

Which of the following is a non-specific defense?

Find the incorrect match.-

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

Which of the following statements is not true?

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