Who first observed the plasma membrane?
William Seifriz
Schwann
Palade
None of the above
Correct Answer :
A. William Seifriz
Related Questions
Genes are made of
Carbohydrates
Proteins
Fats
Nucleotides
The theory that cells arise from the pre-existing cells was proposed by
Nageli
Virchow
Schleiden
Muller
When does the heart start functioning?
At birth
After birth
Before birth
After a week from birth
The olfactory area is concerned with
smell
sight
hearing
speech
The hormone which is Popularly called as stress hormone is
Epinephrine
Cortisone
Thyroxine
Insulin
Fibrinogen is present in
lymph
liver
blood plasma
pancreas
Which of these is most consistently observed in Vitamin B12 deficiency?
Pigmentation of skin
Red, sore tongue with capillary atrophy
Megaloblastic anemia
Absence of tendon reflexes
Cancer cells are more easily damaged by radiation than normal cells because they are
different in structure
non-dividing
starved of nutrition
undergoing rapid division
Clotting of blood is
a chain reaction
reversible reaction
reflex action
no reaction
Which element in chillies causes burning sensations?
Capsaicin
Cyanogen
Ammonia
Capsicum
Which one of the following was probably absent in the atmosphere at the time of origin of life?
Ammonia
Oxygen
Hydrogen
Carbon
The part of the brain which is responsible for intelligence is
cerebrum
opthalmic
cochlea
semicircular canals
For which of the following is insulin treatment given?
Cancer
Diabetes
Asthma
Typhoid
Scurvy is prevented by vitamin
A
B
C
D
Which among the following is a balanced fertiliser for plants?
Urea
Ammonium Sulphate
Nitrates
Compost
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
Those small organisms which float on the surface of water are called
Necton
pH indicators
Plankton
Benthos
Food substances are substances by
hormones
enzymes
vitamins
zymogens
The theory of 'jumping genes' was propounded by
Gregor John Mendel
Thomas Hunt Morgan
Barbara McClintock
Watson and Crick
Blood of cockroach is
red
bluish
greenish
colourless
Hydrotropism means the growth of roots
away from water
towards water
into water
out of water
Which of the following diseases are not bacterial?
cholera and diphtheria
trichomonasis and malaria
tetanus and typhoid
tuberculosis and leprosy
Valve a are present inside
Arteries
Capillaries
Veins
Lymph vessels
Which one of the following is not an essential micronutrient for plants?
Boron
Zinc
Sodium
Copper
Whale reproduces by
ovipary
vivipary
ovovivipary
fission
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
Which one of the following genetical disease is sex-linked?
Royal haemophilia
Tay-Sachs disease
Cystic fibrosis
Hypertension
Sleeping sickness in man is caused by the organism
plasmodium
entamoeba
giardia
trypanosome
The function of a cell wall is
to give definite shape to the cell
to provide mechanical strength and protection to the cell
to prevent the cell from desiccation
All the above
The wall of the heart is made of programmed cell death is known as
voluntary muscles
involuntary muscles
cardiac muscles
skeletal muscles