Get premium membership and access questions with answers, video lessons as well as revision papers.
-This is the process where oxygen gas is brought into the lungs mainly from the atmosphere while the carbon (IV) oxide gas is carried into the blood capillaries so as to be expelled from the body of an organism.
-This is summarized as the exchange of gases between the external environment and the alveoli.
-This exchange of gases makes the alveoli ventilated.
jim items answered the question on March 28, 2019 at 18:14
- Explain why water logging of the soil may lead to death in plants(Solved)
Explain why water logging of the soil may lead to death in plants.
Date posted: March 26, 2019. Answers (1)
- What is the English common name for Cannabis Sativa?(Solved)
What is the English common name for Cannabis Sativa?
Date posted: March 26, 2019. Answers (1)
- The diagram below show various types of gene mutations.(Solved)
The diagram below show various types of gene mutations.
i) Identify the type of mutations shown above.
ii) Name one disorder that results from gene mutation II.
Date posted: March 25, 2019. Answers (1)
- Describe the menstrual cycle.(Solved)
Describe the menstrual cycle.
Date posted: March 23, 2019. Answers (1)
- Describe how various bones of the vertebral column are adapted to their functions in humans.(Solved)
Describe how various bones of the vertebral column are adapted to their functions in humans.
Date posted: March 23, 2019. Answers (1)
- What is the function of pancreas in the body?(Solved)
What is the function of pancreas in the body?
Date posted: March 22, 2019. Answers (1)
- The diagram below shows part of plant tissue.(Solved)
The diagram below shows part of plant tissue.
(i) Name the cell labelled X and part labelled W.
(ii) State two adaptations of cell labelled X to its functions.
Date posted: March 22, 2019. Answers (1)
- Name the strengthening substance in sclerenchyma tissue.(Solved)
Name the strengthening substance in sclerenchyma tissue.
Date posted: March 22, 2019. Answers (1)
- The diagram below illustrate two types of neurons and associated structures. Study the diagrams carefully and answer the questions that follow.(Solved)
The diagram below illustrate two types of neurons and associated structures. Study the diagrams carefully and answer the questions that follow.
(i) Identify the type of neurons illustrated in diagrams N1 and N2.
(ii) Provide two reasons for your identity of the neuron in diagram N1.
Date posted: March 22, 2019. Answers (1)
- The diagram below represents a cell organelle.(Solved)
The diagram below represents a cell organelle.
(i) Identify the organelle.
(ii) Name the part labelled B.
(iii) State the function of the part labelled A.
Date posted: March 22, 2019. Answers (1)
- If the nerve supply to the heart of a mammal is servered, the rhythmic heart movement will still go on and the heart continues to...(Solved)
If the nerve supply to the heart of a mammal is servered, the rhythmic heart movement will still go on and the heart continues to beat. Explain this observation
Date posted: March 22, 2019. Answers (1)
- State the functions of the following parts of the mammalian ear.a) Eustachian tube.b) The utriculus and sacculus.(Solved)
State the functions of the following parts of the mammalian ear.
a) Eustachian tube.
b) The utriculus and sacculus.
Date posted: March 22, 2019. Answers (1)
- Distinguish between analogous structures and homologous structures. For each structure give an example.(Solved)
Distinguish between analogous structures and homologous structures. For each structure give an example.
Date posted: March 22, 2019. Answers (1)
- The diagram below shows a bone that was obtained from a mammal.(Solved)
The diagram below shows a bone that was obtained from a mammal.
a) Identify the bone.
b) i) Name the type of joint formed at the part marked P.
ii) State one characteristic of the joint named in b) i) above.
Date posted: March 22, 2019. Answers (1)
- The action of pepsin stops in the duodenum. Explain.(Solved)
The action of pepsin stops in the duodenum. Explain.
Date posted: March 22, 2019. Answers (1)
- What is the importance of the pollen tube in fertilization in plants?(Solved)
What is the importance of the pollen tube in fertilization in plants?
Date posted: March 22, 2019. Answers (1)
- What is the importance of heartbeat in blood circulation?(Solved)
What is the importance of heartbeat in blood circulation?
Date posted: March 22, 2019. Answers (1)
- Distinguish between lymphocytes and phagocytes(Solved)
Distinguish between lymphocytes and phagocytes
Date posted: March 22, 2019. Answers (1)
- State two ways in which white blood cells defend the body against infections.(Solved)
State two ways in which white blood cells defend the body against infections.
Date posted: March 22, 2019. Answers (1)
- The figure below shows a stem of a plant growing round a tree trunk(Solved)
The figure below shows a stem of a plant growing round a tree trunk
a) What is the name of the response which causes such a twisted growth?
b) Explain how twisting process is accomplished
Date posted: March 22, 2019. Answers (1)