Which of the following organism respires through the body surface

• A. Man
• B. Fish
• C. Tridax
• D. Amoeba

A freshwater pond may contain

• A. tadpole, water boatman, leeches and crab
• B. water beetle, shrimps, water snail and water bug
• C. water lily, fish, water scorpion and dragon larva
• D. pon skater, water lily, shark and mosquito larva

Which of the following statements best describes protein synthesis?

• A. DNA is directly involved in translation
• B. translocation of ribosomes exposes a new codon for base pairing with an amino acid
• C. Each tRNA with a particular anticodon always carries a different protein in the process
• D. One amino acid is always carried by more than one

The group of several populations that interact and share a habitat, form

• A. a species
• B. a community
• C. an ecotype
• D. a tribe

The purpose of proteins in the diet of a mammal is to

• A. promote growth and repair cells
• B. break down molecules
• C. regulate the flow of chyme
• D. serve as co-factors or enzymes

Spirogyra is regarded as a multicellular plant because

• A. its cells are linked together by cytoplasmic strands
• B. its cells are joined to form organs
• C. the cylindrical cells are linked end to end
• D. the filaments consist of one cell only

Which of the following structures would carry out cellular respiration? A

• A. germinating seed
• B. decolorised leaf
• C. dry leaf
• D. boiled cowpea

An acidic soil can be improved upon by

• A. sedimentation
• B. leaching
• C. flocculation
• D. watering

Diagram J is a protease while diagrams K,L,M, and N are food substances, study them and answer this question.

After a reaction between protease J and the food substance, the end product would be

• A. fatty acids
• B. glucose
• C. amino acids
• D. water

Daughters receive their X-chromosome from their

• A) father
• B) mother
• C) relative
• D) siblings