Most of the enzymes are
proteins
lipids
acids
alkalis
Correct Answer :
A. proteins
Related Questions
Malaria is transmitted from one person to another by
bad air
flies
anopheles mosquito
culex mosquito
Vestigeal organs are those which are
fully formed and functional
much reduced but functional
much reduced and functionless
fully formed but functionless
In case of a heart attack a hormone is injected as an emergency measure. Which one is it?
Thyroxine
Vasopressin
Heparin
Insulin
Which one is a water-soluble vitamin?
A
C
D
E
Jaundice is caused by a/an
virus
bacteria
fungus
animal
The plant cells are surrounded rigidly by
plasmalemma
cell membrane
cell wall
plasma membrane
What are the symptoms of retinal deficiency?
Dry skin
Rough skin
Night blindness
Sensitiveness to light and ulcers
Blood of cockroach is
red
bluish
greenish
colourless
Blood cancer is otherwise called
Leukaemia
Leucoderma
Leucocytopenia
Erythrocemia
The two German scientists who proposed the 'cell theory' were
Mendel and 'Darwin
Theodore Schwann and Matthias Schleiden
Virchow and Purkinje
porter and Palade
The involuntary muscles are controlled by the
Cerebrum
Cerebellum
Medulla oblongata
Pons
Compared to the veins, the walls of arteries are
thicker
thinner
similar
very much thinner
When does the heart start functioning?
At birth
After birth
Before birth
After a week from birth
In one minute normally the heart beats
60 times
80 times
100 times
72 times
Who coined the term gene?
Mendel
Devries
Jacob and Monod
Johanson
Which of the following terms is used in Botany?
Recession
Dumping
Barter System
Biennial
Consumption of potassium cyanide leads to total stoppage of cellular activity in the human body, as it cripples the
heart
lungs
kidneys
mitochondria
Blood is
acidic
alkaline
neutral
like a buffer
Bacteria utilising radiant energy to prepare food are
chemosynthetic bacteria
heterotrophic bacteria
photosynthetic bacteria
free living bacteria
Oparin is known for his hypothesis on
origin of species
origin of life
one germ one disease
one gene one enzyme
The hormone that contains iodine is
Prolactin
Vasopressin
Thyroxine
Adrenalin
pH of blood remains constant due to
blood pressure
buffer action
perspiration
respiration
Insulin is concerned with the metabolism of
sugar
fats
proteins
vitamins
The cellular and molecular control o( programmed cell death is known as
Apoptosis
Ageing
Degeneration
Necrosis
The cell theory of Schleiden and Schwann states that
cells reproduce by mitosis or meiosis
all cells have nuclei
cells are basic units of plants and animals
cells arise only from pre-existing cells
Eugenics is the application of genetics to improve
crop plants
fruit trees
cattle
human beings
Cutting and layering are the methods of plant propagation usually referred to as
asexual reproduction
sexual reproduction
vegetative reproduction
gardening
Fat present below the skin surface in our body acts as a barrier against
loss of heat from the body
loss of essential body fluids
loss of salts from the body
entry of harmful micro-organisms from the environment
One of the sequences given below represents a complete metamorphosis. Which one is it?
Egg - adult
Egg - nymph - adult
Egg - larva - pupa - adult
young one adult
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