SCIENCE FOR SARD LEVEL 5 CAT 1

1.     Which one of the following is not a branch for biology?

• Ecology

• Bacteriology

• Theology

• Parasitology

Osmosis can be defined as:

• Movement of solute molecules from a region of high solute concentration to a region of low solute concentration across a semi-permeable membrane

• Movement of water molecules from a region of high solute concentration to a region of low solute concentration across a semi-permeable membrane

• Movement of water molecules from a region of high water concentration to a region of low water concentration across a semi-permeable membrane

• Movement of solute molecules from a region of high water concentration to a region of low water concentration across a semi-permeable membrane

One of the following is NOT a role of active transport in living organisms

• Osmoregulation

• Reabsorption of some sugars and salts in the kidney

• Absorption of mineral salts from the soil by the roots

• Excretion of waste products from the body cells

Which one of the following is NOT a factor that affects the rate of diffusion?

• Thickness of the tissue

• Size of the molecule

• Surface area to volume ratio

• Concentration of the solution and the concentration of the gradient

When a red blood cell is placed in hypotonic solution (distilled water), it will eventually burst. The bursting of the red blood cells is known as:

• Plasmolysis

• Haemolysis

• Crenation

• Deplasmolysis

The following shows the characteristics possessed by plants, except?

• They reproduce

• They move about from one place to another

• They respire

• They undertake gaseous exchange process

The following shows the characteristics possessed by plants, except?

• They reproduce

• They move about from one place to another

• They respire

• They undertake gaseous exchange process

Identify the descending order of the taxonomic units of classification

• Species-genus-family-class-order-division/phylum-kingdom

• Species-genus-family-order-class-division/phylum-kingdom

• Kingdom-division/phylum-class-order-family-genus-specie

• Kingdom-division/phylum-order-class-family-genus-species

The following are importance of classification of living things except?

• Classification systems improve the ability to explain relationship among living things

• It help us to understand the interrelationship among different groups of organisms

• Classification help us to increase confusion and chaos when dealing with living things

• Taxonomic systems provide relatively an unequivocal names for organisms

Identify the correct scientific name for a lion

• Panthera leo

• Panthera Leo

• panthera leo

• Panthera leo