NEET Zoology Practice Papers-2

Which of the following cannot be used as a vector?

Plasmid

both

Bacterium

Which of the following is a non-specific defense?

The inflammatory response

The B-cell response

The T-cell response

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

It binds to tropomyosin, enabling troponin to release ATP

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

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

T-wave: - Represents ventricular repolarisation

P-wave: - Marks the beginning of ventricular systole

Q-wave: - Represents depolarisation of atria

Who was the first member of the genus Homo?

Homo erectus

Homo habilis

Homo sapiens

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

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

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

Which is not involved in the knee jerk reflex?

Motor neuron

Muscle spindle

An interneuron

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

Cross-breeding

Outcrossing

Inbreeding

Sickle cell anemia is an example of-

both

frameshift mutation

Point mutation

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

Adrenaline and nor-adrenaline

Aldosterone and cortisol

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

High levels of hCG in uterus stimulates endometrial thickening

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

Which of the following statements is not true?

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

ADH makes the collecting duct more permeable to water

Antigen binding site of antibody molecule is made up of

Variable region of heavy chain

Variable region of light chain

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

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

A- negative

AB- negative

B- negative

Find the incorrect match.-

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

IUI - Intrauterine insemination

ICSI - Sperms are directly injected into ovum

The HIV-virus is particularly dangerous because it attacks

Cells with CD4 + coreceptor

Helper T-cells

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

All of these

In vertibrates, the notochord is modified into -

vertebral column

both

centrum of vertebrae

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

keratin

haemoglobin

collagen

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:-

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

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

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

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

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

Polymerase chain reaction (PCR)

Gene therapy

Recombinant DNA

One of the important consequence of geographical isolation is :-

preventive speciation

speciation through reproductive isolation

random creation of new species

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

Over population in these areas

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

Environmental mutagens that cause changes in viral RNA

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

Benzodiazepines

Both

Barbiturates

NEET Zoology Practice Papers-2

Which of the following cannot be used as a vector?

Which of the following is a non-specific defense?

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

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

Who was the first member of the genus Homo?

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

Which is not involved in the knee jerk reflex?

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

Sickle cell anemia is an example of-

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

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

Which of the following statements is not true?

Antigen binding site of antibody molecule is made up of

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

Find the incorrect match.-

The HIV-virus is particularly dangerous because it attacks

In vertibrates, the notochord is modified into -

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

A DNA library is ---

Tick the incorrect match:-

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?

One of the important consequence of geographical isolation is :-

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

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

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