1/20
In mammals Gaseous Exchange Takes Place in;
Trachea✔X
Alveolus✔X
Bronchus✔X
Larynx✔X
2/20
Whe A cell structure is worn out or defective, which cell organelle is responsible for breaking down the material?
Lysosome✔X
Cytoplsm✔X
Ribosome✔X
Nucleus✔X
3/20
Formation Of blood cell is called.
Mitosis✔X
Hemolysis✔X
Hemopoiesis✔X
Hemophysis✔X
4/20
Genes are made up of;
Histones✔X
Bases✔X
Hydrocarbons✔X
Polynucleotides✔X
5/20
A gene is said to be dominant, if
It is expressed both in heterozygous and heterozygous condition✔X
It expresses its effect only in heterozygous state✔X
It is expressed only in heterozygous✔X
It is never expressed in any condition✔X
6/20
During photosynthesis the liberated gas is:
Hydrogen✔X
Nitrogen✔X
Oxygen✔X
Carbon dioxide✔X
7/20
Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?
Oceans, mangroves, lakes, grasslands✔X
Oceans, mangroves, lakes, grasslands✔X
Mangroves, oceans, grasslands, lakes✔X
Oceans, lakes, grasslands, mangroves✔X
8/20
Which among the following correctly defines the correct use of a convex lens?
Astigmatism✔X
Long sightedness✔X
Cataract✔X
Short sightedness✔X
9/20
Which one of the following correctly defines the antigen?
Decreases the body temperature✔X
Forms the antibody, which protects from the poison✔X
Destroys the harmful bacteria and virus✔X
ncrease the body temperature✔X
10/20
In reference to blood transfusion, which one of the following sets of blood groups is correct?
A and O (A donor)✔X
B and A (B donor)✔X
A and AB (A donor)✔X
AB and O (AB donor)✔X
11/20
What is the function of the cell membrane?
To control the substances that enter and leave the cell✔X
To carry out respiration✔X
To contain the genetic information✔X
To synthesise proteins✔X
12/20
What is the name given to the specifically shaped region of the enzyme where the reaction occurs?
Substrate✔X
Product✔X
Active site✔X
Reactant✔X
13/20
Which of these describe the process of mitosis?
Four diploid daughter cells are produced✔X
Two diploid daughter cells are produced✔X
Two haploid daughter cells are produced✔X
Four haploid daughter cells are produced✔X
14/20
which on of the following blood vessles transports oxygenated blood
Pulmonary Vein✔X
Coronary vein✔X
Lingual vein✔X
Hepatic Vein✔X
15/20
Components of blood can be separated by;
Chromatography✔X
Centrifugation✔X
Fractional crystalisation✔X
Distillation✔X
16/20
Which one of the following muscles does not fatigue?
Skeletal Muscle✔X
Cardiac Muscle✔X
Smooth muscle✔X
Striated Muscle✔X
17/20
Flatworm belongs to phyllum;
Arachinida✔X
Platyhelmiths✔X
Arthropoda✔X
Cnidaria✔X
18/20
The function of chrosomes of carrying genetic information from cell generation to another is performed by:
RNA✔X
Calcium✔X
Histones✔X
DNA✔X
19/20
Chromosome set in zygote is
4n✔X
3n✔X
2n✔X
1n✔X
20/20
In A cell Membrane, the biphospholid layer has
Hyrdrophillic heads✔X
Hydrophobic Heads✔X
Hydrophillic tails✔X
Hydrophobic tails✔X
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