Which of the following cell organelles play the most significant role in protein synthesis?
Lysosome and Centrosome
Endoplasmic reticulum and Ribosome
Golgi apparatus and Mitochondria
Lysosome and Mitochondria
Correct Answer :
B. Endoplasmic reticulum and Ribosome
Related Questions
Which one of the following genetical disease is sex-linked?
Royal haemophilia
Tay-Sachs disease
Cystic fibrosis
Hypertension
The two German scientists who proposed the 'cell theory' were
Mendel and 'Darwin
Theodore Schwann and Matthias Schleiden
Virchow and Purkinje
porter and Palade
Higher plants take up nitrogen as
Nitrites only
Nitrates only
Nitrates and Ammonia
Urea
Athlete's Foot' is a disease caused by
Bacteria
Fungus
Protozoa
Nematode
Enzymes are produced by
endocrine glands
exocrine glands
liver
spleen
Infection of salivary glands by a virus leads to
tetanus
mumps
pyorrhoea
ulcers
The enzyme that is necessary to bring about clotting of blood is
peptidase
amylase
lipase
thrombokinase
The function of connective tissue is
to hold the other tissues together
to facilitate diffusion
to help transportation of dissolved material from capillaries to epithelial cells
protection
1 gm of carbohydrate gives energy which is about
3 k cal
2 k cal
4.2 k cal
8.1 k cal
The first sign of life made its appearance on the earth about
1 million years ago
500 million years ago
1 billion or 1000 million years ago
3 billion years ago
The biologist who believed in the spontaneous creation of microorganisms was
Leuwenhock
Needham
Spallanzeni
Pasteur
What is an antigen?
toxic substance
a kind of protein
blood platelets
blood corpuscles
HIV causes
cancer
hepatitis
AIDS
Herpes
Dwarf plants can be made to attain their normal stature by applying
IAA
Ethylene
Gibberelins
Cytokinins
Stripes on the bodies of animals Indicate
mating habit
food habit
cave dwelling
matching of skin colour with the surroundings
Cancer is induced by certain viruses called
poxviruses
adenoviruses
oncogenic viruses
herpesviruses
Which of the following terms is used in Botany?
Recession
Dumping
Barter System
Biennial
The rate of growth of plants can be measured by a/an
manometer
auxanometer
photometer
thermometer
Evergreen forests are confined to
Equatorial region
Temperate region
Alpine region
Arctic region
Blood of cockroach is
red
bluish
greenish
colourless
Maize is attacked by
Phytophthora
Pythium
Ustilago
Puccinia
Deciduous forests are those with trees
that are evergreen
that shed leaves periodically
that have needle like leaves
that have no leaves at all
What are halophytes?
plants found in fresh water
plants growing in saline conditions
mesophytic plants
desert plants
pH of blood remains constant due to
blood pressure
buffer action
perspiration
respiration
Injection of insulin causes
increase in glucose in blood
decrease in glucose in blood
increase in blood pressure
decrease in blood pressure
Kwashiorkor' is caused by deficiency of
carbohydrates
proteins
fats
vitamins
Turner's syndrome is a disease caused by
bacteria
virus
fungus
chromosomal imbalance
Phonoreceptor refers to the perception of
light
sound
touch
smell
It is possible to produce seedless tomato fruits by
applying trace elements in tomato fields
spraying mineral solution on plants
spraying harmones on flowers
applying fertilizers containing radioactive elements
Egg laying animals are referred to as
viviparous
oviparous
ovoviviparous
vegetative