Question 1
State the role of light in photosynthesis
Answer
Photolysis/provides energy required for splitting water molecules into hydrogen ions and oxygen gas;
Question 2.
Name two functions of sodium in human body
Answer
- Formation of the harmone thyropine;
- Nerve impulse transmission;
- Nerve impulse transmission;
Question 3
List down the processes responsible for
(i) The formation of glomerular filtrate
(ii) Absence of glucose and amino acids in urine.
Answer
(i) ultra filtration
(ii) Reabsorption
(ii) Reabsorption
Question 4
(a) State the functions of the following parts in a cell
(i) Nucleolus
(ii) Smooth endoplasmic reticulum
(b) Name an organelle that would be found in large numbers in cells of secretory glands
Answer
(a) (i) Manufacture/synthesis of ribosomes;
(ii) Transport of lipido
(b) Golgi bodies/Golgi apparatus;
(ii) Transport of lipido
(b) Golgi bodies/Golgi apparatus;
Question 5
Identify the use of the following apparatus
(i) Bait trap
(ii) Specimen bottle
(iii) Pitfall trap
Answer
(i) For attracting and trapping small animals including rats
(ii) For keeping collected specimen;
(iii) For catching crawling animals;
(ii) For keeping collected specimen;
(iii) For catching crawling animals;