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Current Affairs January 2024

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4

Who discovered the electron microscope?

A. Knoll and Ruska

B. Rudolf and Kolliker

C. Robert Hooke

D. CP Swanson

Correct Answer :

A. Knoll and Ruska


Related Questions

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Fusarium causes the wilting of the cotton plants by

A. clogging the vessels

B. producing toxic substance

C. causing necrosis of roots

D. killing the leaves

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The olfactory area is concerned with

A. smell

B. sight

C. hearing

D. speech

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Fat present below the skin surface in our body acts as a barrier against

A. loss of heat from the body

B. loss of essential body fluids

C. loss of salts from the body

D. entry of harmful micro-organisms from the environment

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4

1 gm of carbohydrate gives energy which is about

A. 3 k cal

B. 2 k cal

C. 4.2 k cal

D. 8.1 k cal

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What ia leukaemia?

A. proliferation of WBC

B. decrease of RBC

C. increase of platelets

D. decrease of WBC

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Bats can fly in the dark because

A. they have a better vision in the dark

B. the light startles them

C. they produce high pitched sounds called ultrasonics

D. None of the above

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Fibrinogen is present in

A. lymph

B. liver

C. blood plasma

D. pancreas

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Small pox is caused by

A. bacteria

B. fungus

C. virus

D. algae

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Which of the following diseases is caused by the deficiency of iron in human body?

A. Anaemia

B. Scurvy

C. Dermatosis

D. None of these

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The liver destroys old

A. leucocytes

B. thrombocytes

C. erythrocytes

D. lymphocytes

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The part of the human brain concerned with sight is the

A. Frontal lobe

B. Parietal lobe

C. Temporal lobe

D. Occipital lobe

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The metallic part of haemoglobin is

A. copper

B. molybdenum

C. nickel

D. iron

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The specific gravity of blood is

A. lower than water

B. higher than water

C. same as water

D. many times that of water

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4

One of the following is often called the master gland. Which one is it?

A. Thymus

B. Islets of Langerhans

C. Pituitary

D. Thyroid

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Blood is a kind of

A. epithelial tissue

B. connective tissue

C. nervous tissue

D. cartilage

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The muscles of the heart are

A. striated and involuntary

B. striated and voluntary

C. smooth and involuntary

D. smooth and voluntary

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Vitamin D is manufactured in a healthy human being by the action of _______ on the skin and absorbed in the blood stream.

A. ozone

B. radium

C. moonlight

D. sunlight

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Valves are present inside

A. arteries

B. capillaries

C. veins

D. aorta

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Which one of the following is essential for blood clotting?

A. RBC

B. WBC

C. Blood platelets

D. Lymph

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4

Louis Pasteur developed the vaccine for ______ for the first time.

A. smallpox

B. cowpox

C. tetanus

D. chicken cholera

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Lactose and Rennin, the enzymes required to digest milk, disappear in the human body by the age of _______ years.

A. 2

B. 3

C. 5

D. 8

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Blood is

A. acidic

B. alkaline

C. neutral

D. like a buffer

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It is possible to produce seedless tomato fruits by

A. applying trace elements in tomato fields

B. spraying mineral solution on plants

C. spraying harmones on flowers

D. applying fertilizers containing radioactive elements

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4

The oldest era is

A. Palaeozoic

B. Mesozoic

C. Cenozoic

D. Proterozoic

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Milk fever in cows occurs due to lack of

A. Phosphates

B. Calcium

C. Iron

D. Iodine

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The country's first 'brain bank' that can store up to 300 human brains has been opened at

A. Alleppey

B. Bengaluru

C. Bhubaneshwar

D. Mumbai

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The 'graveyard of the RBC' refers to

A. spleen

B. liver

C. bone marrow

D. thymus

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Plants growing in sunlight are called

A. sciophytes

B. hydrophytes

C. xerophytes

D. heliophytes

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Which of the following plays an important part in photosynthesis?

A. Chloroplast

B. Centrosome

C. Tonoplast

D. Nematoblast

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Formation of blood

A. Histolysis

B. Histogenesis

C. Haemopoiesis

D. Haemolysis