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1.   State the role of light in photosynthesis. (Answered)
State the role of light in photosynthesis. .
Posted On:Sat 3, April 2021 15:21:30 pm
2.   Which sets of teeth would be used in chewing sugarcane for maximum extraction of sap? (Answered)
Which sets of teeth would be used in chewing sugarcane for maximum extraction of sap? .
Posted On:Sat 3, April 2021 14:47:10 pm
3.   How is the surface area increased in the mammalian small intestines? (Answered)
How is the surface area increased in the mammalian small intestines? .
Posted On:Sat 3, April 2021 14:45:28 pm
4.   Name two enzymes in the human digestive system which are secreted in an inactive form. (Answered)
Name two enzymes in the human digestive system which are secreted in an inactive form. .
Posted On:Sat 3, April 2021 14:44:28 pm
5.   During a practical investigation on food tests, students were provided with the following reagents. Benedict’s solution, Sodium hydrogen carbonate, Dilute hydrochloric acid. (a) Identify the food substance the students were to test. (b) State the role of dilute hydrochloric acid and sodium hydrogen carbonate during the experiment. (i) Dilute hydrochloric acid. ii) Sodium hydrogen carbonate (Answered)
During a practical investigation on food tests, students were provided with the following reagents. Benedict’s solution, Sodium hydrogen carbonate, Dilute hydrochloric acid. (a) Identify the food substance the students were to test. (b) State the role of dilute hydrochloric acid and sodium hydrogen carbonate during the experiment. (i) Dilute hydrochloric acid. ii) Sodium hydrogen carbonate .
Posted On:Sat 3, April 2021 14:42:21 pm
6.   Give three factors that determine the amount of energy a human being requires in a day. (Answered)
Give three factors that determine the amount of energy a human being requires in a day. .
Posted On:Sat 3, April 2021 14:38:42 pm
7.   How is a human stomach adapted to: (i) Protein digestion? (ii) Churning? (Answered)
How is a human stomach adapted to: (i) Protein digestion? (ii) Churning? .
Posted On:Sat 3, April 2021 14:36:55 pm
8.   What happens to the glucose synthesized during photosynthesis (Answered)
What happens to the glucose synthesized during photosynthesis .
Posted On:Sat 3, April 2021 14:06:47 pm
9.   Describe the process of carbohydrate digestion in human beings. (Answered)
Describe the process of carbohydrate digestion in human beings. .
Posted On:Sat 3, April 2021 14:03:55 pm
10.   State the cause and two symptoms of Beri-beri. (Answered)
State the cause and two symptoms of Beri-beri. .
Posted On:Sat 3, April 2021 13:57:29 pm
11.   Name one appropriate food substance for each of the following enzymes. (i) Ptyalin (ii) Pepsin (Answered)
Name one appropriate food substance for each of the following enzymes. (i) Ptyalin (ii) Pepsin .
Posted On:Sat 3, April 2021 13:49:28 pm
12.   Explain how age determines a person’s energy (Answered)
Explain how age determines a person’s energy .
Posted On:Sat 3, April 2021 13:48:00 pm
13.   State two roles of mucus in the stomach (Answered)
State two roles of mucus in the stomach .
Posted On:Sat 3, April 2021 13:47:04 pm
14.   State two ways in which the human intestinal villus is adapted to its function. (Answered)
State two ways in which the human intestinal villus is adapted to its function. .
Posted On:Sat 3, April 2021 13:44:59 pm
15.   Name two nutrients that are absorbed without being digested by enzymes in humans. (Answered)
Name two nutrients that are absorbed without being digested by enzymes in humans. .
Posted On:Sat 3, April 2021 13:43:48 pm
16.   State functions of saliva (Answered)
State functions of saliva .
Posted On:Sat 3, April 2021 13:42:13 pm
17.   Name one salivary gland in humans (Answered)
Name one salivary gland in humans .
Posted On:Sat 3, April 2021 13:41:01 pm
18.   State two functions of carbohydrates in the human body. (Answered)
State two functions of carbohydrates in the human body. .
Posted On:Sat 3, April 2021 13:38:54 pm
19.   Name two dental diseases. (Answered)
Name two dental diseases. .
Posted On:Sat 3, April 2021 13:29:40 pm
20.   Write the dental formula of an adult human. (Answered)
Write the dental formula of an adult human. .
Posted On:Sat 3, April 2021 13:27:55 pm
21.   The following is the dental formula of a certain mammal. i#0/3#c#0/1#pm#3/3#m#3/3# (a) State the likely mode of feeding for the mammal. (b) Give a reason for your answer in (a) above. (Answered)
The following is the dental formula of a certain mammal. i#0/3#c#0/1#pm#3/3#m#3/3# (a) State the likely mode of feeding for the mammal. (b) Give a reason for your answer in (a) above. .
Posted On:Sat 3, April 2021 13:18:34 pm
22.   What is the role of bile salts in digestion in humans (Answered)
What is the role of bile salts in digestion in humans .
Posted On:Sat 3, April 2021 13:14:21 pm
23.   The diagram below represents the lower jaw of a mammal. (a) Name the mode of nutrition of the mammal whose jaw is shown. (b) State one structural and one functional difference between the teeth labeled J and L. (c) (i) Name the toothless gap labeled K. (ii) State the function of the gap. d) Name the substance that is responsible for hardening of teeth. (Answered)
The diagram below represents the lower jaw of a mammal. (a) Name the mode of nutrition of the mammal whose jaw is shown. (b) State one structural and one functional difference between the teeth labeled J and L. (c) (i) Name the toothless gap labeled K. (ii) State the function of the gap. d) Name the substance that is responsible for hardening of teeth. .
Posted On:Sat 3, April 2021 13:12:41 pm
24.   Explain how the following factors determine the daily energy requirement in human: (a) Age (b) Occupation (c) Sex (Answered)
Explain how the following factors determine the daily energy requirement in human: (a) Age (b) Occupation (c) Sex .
Posted On:Sat 3, April 2021 13:07:23 pm
25.   State the function of iron in the human body. (Answered)
State the function of iron in the human body. .
Posted On:Sat 3, April 2021 13:05:34 pm
26.   Explain how the carnassial teeth of a dog are adapted to their function. (Answered)
Explain how the carnassial teeth of a dog are adapted to their function. .
Posted On:Sat 3, April 2021 13:04:34 pm
27.   State the role of the following vitamins in the human body. (i) C (ii) K (Answered)
State the role of the following vitamins in the human body. (i) C (ii) K .
Posted On:Sat 3, April 2021 13:02:30 pm
28.   The diagram below shows a human tooth. (a) Identify the tooth b)How is the tooth adapted to its function (Answered)
The diagram below shows a human tooth. (a) Identify the tooth b)How is the tooth adapted to its function .
Posted On:Sat 3, April 2021 13:00:40 pm
29.   Name the features that increase the surface area of small intestines (Answered)
Name the features that increase the surface area of small intestines .
Posted On:Sat 3, April 2021 12:57:08 pm
30.   State a factor that denatures enzymes. (Answered)
State a factor that denatures enzymes. .
Posted On:Sat 3, April 2021 12:56:27 pm
31.   The action of ptyalin stops at the stomach. Explain (Answered)
The action of ptyalin stops at the stomach. Explain .
Posted On:Sat 3, April 2021 12:54:40 pm
32.   State two functions of potassium ions in the human body. (Answered)
State two functions of potassium ions in the human body. .
Posted On:Sat 3, April 2021 12:53:39 pm
33.   Name a fat soluble vitamin manufactured by the human body (Answered)
Name a fat soluble vitamin manufactured by the human body .
Posted On:Sat 3, April 2021 12:53:09 pm
34.   The diagram below represents a section through a human tooth. (a) (i) Name the type of tooth shown. (ii) Give a reason for your answer in (a) (i) above (b) State the functions of the structures found in part labeled J (Answered)
The diagram below represents a section through a human tooth. (a) (i) Name the type of tooth shown. (ii) Give a reason for your answer in (a) (i) above (b) State the functions of the structures found in part labeled J .
Posted On:Sat 3, April 2021 12:51:47 pm
35.   How does substrate concentration affect the rate of enzyme action? (Answered)
How does substrate concentration affect the rate of enzyme action? .
Posted On:Sat 3, April 2021 12:48:36 pm
36.   State two functions of bile juice in the digestion of food. (Answered)
State two functions of bile juice in the digestion of food. .
Posted On:Sat 3, April 2021 12:47:57 pm
37.   A certain animal has no incisors, no canines, 6 premolars and 6 molars in its upper jaw. In the lower jaw, there are 6 incisors, 2 canines, 6 premolars and 6 molars. Write its dental formula. (Answered)
A certain animal has no incisors, no canines, 6 premolars and 6 molars in its upper jaw. In the lower jaw, there are 6 incisors, 2 canines, 6 premolars and 6 molars. Write its dental formula. .
Posted On:Sat 3, April 2021 12:47:05 pm
38.   What is the function of carnassial teeth? (Answered)
What is the function of carnassial teeth? .
Posted On:Sat 3, April 2021 12:45:07 pm
39.   Distinguish between the terms homodont and heterodont (Answered)
Distinguish between the terms homodont and heterodont .
Posted On:Sat 3, April 2021 12:44:34 pm
40.   State the role of vitamin C in humans. (Answered)
State the role of vitamin C in humans. .
Posted On:Sat 3, April 2021 12:42:53 pm
41.   State a function of the large intestine in humans. (Answered)
State a function of the large intestine in humans. .
Posted On:Sat 3, April 2021 12:42:10 pm
42.   What happens to excess fatty acids and glycerol in the body? (Answered)
What happens to excess fatty acids and glycerol in the body? .
Posted On:Sat 3, April 2021 12:41:35 pm
43.   Give one example of a metallic co-factor (Answered)
Give one example of a metallic co-factor .
Posted On:Sat 3, April 2021 12:40:45 pm
44.   State the function for co-factors in cell metabolism. (Answered)
State the function for co-factors in cell metabolism. .
Posted On:Sat 3, April 2021 12:39:31 pm
45.   State four uses of water in the bodies of animals. (Answered)
State four uses of water in the bodies of animals. .
Posted On:Sat 3, April 2021 12:38:30 pm
46.   State four uses of digested food in the bodies of animals (Answered)
State four uses of digested food in the bodies of animals .
Posted On:Sat 3, April 2021 12:37:51 pm
47.   An experiment was carried out to investigate the nutritional value of two dry powder animal feeds X and Y over a period of six months. Twenty 5 month’s old castrated goats were used. The goats were divided into two equal groups A and B. The animals in group A were fed on feed X throughout the experiment while those of group B were fed on feed Y. the feeds were supplemented with dry hay and water. (Answered)
An experiment was carried out to investigate the nutritional value of two dry powder animal feeds X and Y over a period of six months. Twenty 5 month’s old castrated goats were used. The goats were divided into two equal groups A and B. The animals in group A were fed on feed X throughout the experiment while those of group B were fed on feed Y. the feeds were supplemented with dry hay and water. .
Posted On:Sat 3, April 2021 12:35:37 pm
48.   State two functions of muscles found in the alimentary canal of mammals (Answered)
State two functions of muscles found in the alimentary canal of mammals .
Posted On:Sat 3, April 2021 12:23:30 pm
49.    Describe how the mammalian small intestine is adapted to its function. (Answered)
Describe how the mammalian small intestine is adapted to its function. .
Posted On:Sat 3, April 2021 12:21:38 pm
50.   What is meant by the term digestion? (Answered)
What is meant by the term digestion? .
Posted On:Sat 3, April 2021 12:20:49 pm
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