- An experiment was carried out as follows:
-2cm³of egg white suspension was placed in each test tubes labelled A,B,C and D.
-Three drops of hydrochloric acid(HCI)was added...(Solved)
An experiment was carried out as follows:
-2cm³of egg white suspension was placed in each of the test tubes labelled A,B,C and D.
-Three drops of hydrochloric acid (HCI) was added to each of test tubes labelled B,C and D.
-1cm³pepsin was added to each of test tubes labelled A, and C 1cm³ boiled pepsin to test tube labelled D.
All the test tubes were placed in a water bath at 35°C for 15 minutes.
(a)State the observations made in each of the test tubes labelled A,B,C and D.
(b)Account for the observations made in(a) above for test tubes labelled A,B,C and D.
(c)What was the role of HCI?
Date posted: March 2, 2019.
- What are the advantages of excreting uric acid other than ammonia in a kangaroo rat?(Solved)
What are the advantages of excreting uric acid other than ammonia in a kangaroo rat?
Date posted: March 2, 2019.
- Give two reasons why pressure of blood is greater in arteries than in veins of animals.(Solved)
Give two reasons why pressure of blood is greater in arteries than in veins of animals.
Date posted: March 2, 2019.
- State two artificial ways of breaking seed dormancy.(Solved)
State two artificial ways of breaking seed dormancy.
Date posted: March 2, 2019.
- Explain why several lateral buds sprout when the terminal bud in a young tree is cut off.(Solved)
Explain why several lateral buds sprout when the terminal bud in a young tree is cut off.
Date posted: March 2, 2019.
- Trace the path taken by oxygen to reach the muscle cells in an insect.(Solved)
Trace the path taken by oxygen to reach the muscle cells in an insect.
Date posted: March 2, 2019.
- State one function of each of the following organelles:
(i)Lysosomes.
(ii)Ribosome.(Solved)
State one function of each of the following organelles:
(i)Lysosomes.
(ii)Ribosome.
Date posted: March 2, 2019.
- (i)Name the causative agent of pulmonary tuberculosis.(ii)How is the disease prevented?(Solved)
(i)Name the causative agent of pulmonary tuberculosis.
(ii)How is the disease prevented?
Date posted: March 2, 2019.
- Define the following terms:
(i)Peristalsis.
(ii)Emulsification.(Solved)
Define the following terms:
(i)Peristalsis.
(ii)Emulsification.
Date posted: March 2, 2019.
- Name two substances that are not filtered out of the blood in the glomerulus.(Solved)
Name two substances that are not filtered out of the blood in the glomerulus.
Date posted: March 2, 2019.
- State two physiological processes by which humans lose heat.(Solved)
State two physiological processes by which humans lose heat.
Date posted: March 2, 2019.
- What problems results from transpiration?(Solved)
What problems results from transpiration?
Date posted: March 2, 2019.
- Why do plant roots require oxygen for the uptake of ions?(Solved)
Why do plant roots require oxygen for the uptake of ions?
Date posted: March 2, 2019.
- Describe how a named finned fish is adapted for swimming.(Solved)
Describe how a named finned fish is adapted for swimming.
Date posted: March 2, 2019.
- What are the Harmful Effects of fungi?(Solved)
What are the Harmful Effects of fungi?
Date posted: February 28, 2019.
- What are the Economic importance of protoctista?(Solved)
What are the Economic importance of protoctista?
Date posted: February 28, 2019.
- Give the General Characteristics of Kingdom Protoctista(Solved)
Give the General Characteristics of Kingdom Protoctista
Date posted: February 28, 2019.
- Which are the bones of hind limb?(Solved)
Which are the bones of hind limb?
Date posted: February 28, 2019.
- Which are the Bones of Fore-limbs?(Solved)
Which are the Bones of Fore-limbs?
Date posted: February 28, 2019.
- Name the Types and Functions of Skeletons(Solved)
Name the Types and Functions of Skeletons
Date posted: February 28, 2019.
- State the role of support tissues in young and old plants(Solved)
State the role of support tissues in young and old plants
Date posted: February 28, 2019.
- Name the defects of the ear(Solved)
Name the defects of the ear.
Date posted: February 28, 2019.
- List the effects of hard drugs on human health(Solved)
List the effects of hard drugs on human health
Date posted: February 28, 2019.
- What are the similarities between endocrine and nervous system?(Solved)
What are the similarities between endocrine and nervous system?
Date posted: February 28, 2019.
- Write brief notes on Thyroxine(Solved)
Write brief notes on Thyroxine
Date posted: February 28, 2019.
- State the Hormones produced in humans and their effects on the body.(Solved)
State the Hormones produced in humans and their effects on the body.
Date posted: February 28, 2019.
- Give the Components of the nervous system in humans(Solved)
Give the Components of the nervous system in humans
Date posted: February 28, 2019.
- Define the following:
1. Phototaxis
2. Osmotaxis
3. Chemotaxis(Solved)
Define the following:
1. Phototaxis
2. Osmotaxis
3. Chemotaxis
Date posted: February 28, 2019.
- Define the following terms as used in Genetics:
(Solved)
Define the following terms as used in Genetics:
1. Genotype
2. Phenotype
3. Alleles
4. Homozygous
5. Heterozygous
6. Hybrid
7. Hybrid vigour or Heterosis
Date posted: February 28, 2019.
- What are the Components of DNA?(Solved)
What are the Components of DNA?
Date posted: February 28, 2019.