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Biology In Human Welfare

Biology In Human Welfare - Biology Questions asked by Filo students

Question 1

Select the correct statement 1 point

Capillaries are made up of three layers.
The walls of the arteries are thick and muscular
In veins, the flow of blood is fast
All of these

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Biology in Human Welfare

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Question 2

Histamine is secreted by " 1 peint

neutrophis
macrophages

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Biology in Human Welfare

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Question 3

Which of the following is false in context of pneumotaxic centre of brain?

Located in the pons region of the brain
Neural signals from this centre can reduce the duration of inspiration
It can alter the respiratory rate
Receptors located in this centre respond strongly to high $pO_{2}$ , high $pCO_{2}$ and low $H^{+}$ concentration in arterial blood

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Question 4

Identify the structures among the following which are involved in the formation of a diffusion membrane. a. Thin squamous epithelium of alveoli b. Endothelium of pulmonary capillaries c. Basement membrane between epithelium of alveoli and endothelium of pulmonary capillaries Select the correct option.

Only a and b
Only a and c
Only b and c
$a, b$ and $c$

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Biology in Human Welfare

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Question 5

Mrite T for True or F for False.

Howers and insects are examples of non-luminous objects.
Light travels in straight lines.
Shadow is formed by luminous objects.
If you try with all your strength, but are unable to move a table no force is used.
Petrol gives energy to a vehicle to move,

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Biology in Human Welfare

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Question 6

Give two examples each of x. sources of light

non-laminous objects
sounds produced in nature
force
noise

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Biology in Human Welfare

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Question 7

8.2.4 Vaccination and Immunisation The principle of immunisation or vaccination is based on the propt 'memory' of the immune system. In vaccination, a preparation of arts proteins of pathogen or inactivated/weakened pathogen (vactine) introduced into the body. The antibodies produced in the body a infection. The vaccines also generate memory - B and T-cells that reor

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Question 8

Health, for a long time, was considered as a state of body and mind where there was a balance of certain 'humors'. This is what early Greeks like Hippocrates as well as Indian Ayurveda system of medicine asserted. It was thought that persons with 'blackbile' belonged to hot personality and would have fevers. This idea was arrived at by pure reflective thought.

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Question 9

Cells which are not dividing are likely to be at

G1
$G 2$
Go
S phase

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Biology in Human Welfare

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Question 10

The food we eat has -

atomic energy
heat energy
light energy
chemical energy

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Biology in Human Welfare

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Question 11

A sex gland which contributes fluid containing sugar fructose that provides spermatozoa energy for swimming and hormone prostaglandins that stimulate contractions in the female reproductive tract to aid sperm-ovum interaction is

Cowper's gland
prostate gland
seminal vesides
preputial gland.

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Biology in Human Welfare

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Question 12

Consider the following three statements related to the human male reproductive system, and select the correct option stating which ones are true (I) and which ones are false (f) (i) Middie piece of spermatozoon is also termed as power house of spermatozogn (w) Yas delerem jeim a duct froma seminal vesicis and has vasa ctleientia (ai) Seven ib a collecien of acciztions trem the meninal wiches prontate gheid and (omesi) glanss and set mo ligen wesles

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Biology in Human Welfare

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Question 13

Which drug is not normally used as medicines to help patients cope with mental illnes like depression and insomnia ?

Barbiturates
Benzodiazepines
Amphetamines
LSD

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Biology in Human Welfare

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Question 14

Which of the following are derivatives of tyrosine amino acid?

Thyroxine
Adrenaline
Nor-adrenaline
Melanin

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Biology in Human Welfare

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Question 15

independent plant. TOPIC 2 Sexual Reproduction 17 Which of the following plant is monoecious? [NEET 2021)

Corica papoya
Chara.
Marchantia polymorpha
Cyeas circinalis

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Biology in Human Welfare

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Question 16

Q.116 Q. 12 Structure of a typical bacterial cell is shown in the diagram. Label 1 to 8 and alco write st and of parts 6 and 7 . Ans. Labelling of the parts 1. Glycocalyx. 2. Cell wall, 3. Plasmamembrane, 4. Nucleoid. 5. Flagellum, 6. Mesosome. 7. Polynbosome, Function of Parts 6 and

7.

6. Mesosome. The exact function of mesosomes is not clear. These extensions of plasmamembrane rin involved in -

Cell wall formation ; (ii) Replication of chromosome and their distribution to daughter cells (uin) Sectect processes, and (iii) Increase in the surface area of plasma membrane

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Biology in Human Welfare

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Question 17

Polyribosome. Polyribosomes are the sites for protein synthesis. Q. 13. Write down differences between Monera and Protista on the basis of following points :

Nature of cell wall component.
Genetic material.
Location of respiratory apparatus.
Types of cytoplasmic ribosome.
Location of extra chromosomal DNA.

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Biology in Human Welfare

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Question 18

7.

6. Mesosome. The exact function of mesosomes is not clear. These extensions of plasmamembrane rin involved in -

Cell wall formation ; (ii) Replication of chromosome and their distribution to daughter cells (uin) Sectect processes, and (iii) Increase in the surface area of plasma membrane

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Biology in Human Welfare

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Question 19

Polyribosome. Polyribosomes are the sites for protein synthesis. Q. 13. Write down differences between Monera and Protista on the basis of following points :

Nature of cell wall component.
Genetic material.
Location of respiratory apparatus.
Types of cytoplasmic ribosome.
Location of extra chromosomal DNA.

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Biology in Human Welfare

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Question 20

Zoo-Section B This section contains 15 SINGLE CORRECT TYPE questions. Out of these 15 questions candidate Read the following statements about co-factors.

The essential chemical components of many coenzymes are vitamins.
Prosthetic groups are always inorganic compounds whereas coenzymes are organic compounds.
Zinc is a cofactor for enzyme carboxypeptidase.
Holoenzymes lose their catalytic activity, when the co-factors are removed.

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Biology in Human Welfare

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