NEET Zoology Practice Papers-2

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 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

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

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

A- negative

AB- negative

B- negative

One of the important consequence of geographical isolation is :-

speciation through reproductive isolation

preventive speciation

random creation of new species

In vertibrates, the notochord is modified into -

centrum of vertebrae

both

vertebral column

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

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

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

Find the incorrect match.-

ICSI - Sperms are directly injected into ovum

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

IUI - Intrauterine insemination

The HIV-virus is particularly dangerous because it attacks

Cells with CD4 + coreceptor

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

Helper T-cells

All of these

A DNA library is ---

A DNA fragment inserted into the vector

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

A collection of all genes sequenced so far

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

Inbreeding

Outcrossing

Cross-breeding

Which of the following is a non-specific defense?

The T-cell response

The inflammatory response

The B-cell response

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

It binds to troponin, enabling tropomyosin to release ATP

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

Sickle cell anemia is an example of-

Point mutation

frameshift mutation

both

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

Both

Barbiturates

Benzodiazepines

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

Q-wave: - Represents depolarisation of atria

T-wave: - Represents ventricular repolarisation

P-wave: - Marks the beginning of ventricular systole

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

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

ADH makes the collecting duct more permeable to water

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

Which is not involved in the knee jerk reflex?

Muscle spindle

An interneuron

Motor neuron

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

Over population in these areas

Environmental mutagens that cause changes in viral RNA

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

Who was the first member of the genus Homo?

Homo erectus

Homo sapiens

Homo habilis

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

High levels of hCG in uterus stimulates endometrial thickening

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

High levels of circulating hCG, stimulate estrogen and progesterone synthesis

Which of the following cannot be used as a vector?

Plasmid

both

Bacterium

Antigen binding site of antibody molecule is made up of

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

Variable region of light chain

Variable region of heavy chain

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

haemoglobin

collagen

keratin

Tick the incorrect match:-

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

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

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

NEET Zoology Practice Papers-2

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

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

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

One of the important consequence of geographical isolation is :-

In vertibrates, the notochord is modified into -

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

Find the incorrect match.-

The HIV-virus is particularly dangerous because it attacks

A DNA library is ---

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

Which of the following is a non-specific defense?

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

Sickle cell anemia is an example of-

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

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

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

Which of the following statements is not true?

Which is not involved in the knee jerk reflex?

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

Who was the first member of the genus Homo?

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

Which of the following cannot be used as a vector?

Antigen binding site of antibody molecule is made up of

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

Tick the incorrect match:-

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