Everyday Science Test 21

Total Questions: 18

1 - Enzymes lower the ______ energy of a chemical reaction.
A ) Kinetic
B ) Activation ✅
C ) Thermal
D ) Potential

2 - In prokaryotic cells, the nuclear material is present in the:
A ) Mesosomes
B ) Cytoplasm ✅
C ) Mitochondria
D ) Nucleus

3 - - _______ is used as a raw material in the photosynthesis.
A ) H2O ✅
B ) O2
C ) Glucose
D ) N2

4 - - Depletion of ozone takes place through:
A ) Redical and ionic reaction
B ) Ionic reaction
C ) Without intermediate
D ) Redical reaction ✅

5 - The size of heart is nearly the size of our:
A ) Hand
B ) Wrist
C ) Fist ✅
D ) Head

6 - Yellowish fluid in blood is called _______

A ) Red blood cells
B ) Plasma ✅
C ) White blood cells
D ) Platelets

7 - The air pollution turns rain water
A ) Alkaline
B ) Base
C ) Acidic ✅
D ) Mineral water

8 - Plants use water to make _______ .
A ) Oxygen
B ) Leaves
C ) Roots
D ) Food ✅

9 - Which part of atom has a lot of energy?
A ) Neutron
B ) Electron
C ) Nucleus ✅
D ) Protron

10 - The removal of carbon dioxide, urine and sweat is a process of ________ .
A ) Respiration ✅
B ) Digestion
C ) Breathing
D ) Excretion

11 - The color of the blood is red due to the presence of :
A ) Carbon dioxide
B ) Plasma
C ) Hemoglobin ✅
D ) Fats

12 - The first antibiotic was prepared from:
A ) Virus
B ) Bacteria
C ) Fungi ✅
D ) Vertebrates

13 - The DNA content of a mammalian cell is about _______ % of total cell weight.
A ) 0.15
B ) 0.25 ✅
C ) 0.35
D ) 0.55

14 - All living and non-living make :
A ) Habitats ✅
B ) Community
C ) Population
D ) Environment

15 - Vertebrates are further divided into _____ classes.
A ) Five ✅
B ) Three
C ) Six
D ) Four

16 - - Which one of the following is the cause of tuberculosis?
A ) Fungi
B ) Virus
C ) Bacteria ✅
D ) Protozoa

17 - Posterior part of embryo that gives rise to root system of young plant is :
A ) Epicotyl
B ) Testa
C ) Radical ✅
D ) Endosperm

18 - As compared to Amphibians, Reptiles have :
A ) Rough and Scaly skin ✅
B ) Strong and steeper bones
C ) Modifies forelimbs
D ) Modifies back limbs
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