Get premium membership and access questions with answers, video lessons as well as revision papers.
The role of the kidney in the purification of blood is done by the nephron. Blood rich in nitrogenous, plasma proteins and mineral ions, hormones and oxygen enters the kidney via renal artery a branch of the dorsal aorta. Due to the narrowness of the afferent arteriole resistance of blood flow and back pressure create high pressure within the glomerulus, also renal artery branches directly from the dorsal aorta whose blood is at high pressure within the glomerulus which forces the liquid part of the blood and dissolved substances of low molecular sizes including urea, glucose, salt and amino acids are forced out of the glomerulus leaving the large size molecules in the plasma such as proteins and blood cells not filtered. Hence only blood rich in plasma proteins remains and has little water.
eddynightsy answered the question on April 20, 2018 at 09:02
- Explain the role of the following in homeostasis; 1. Skin 2. Liver 3. Hypothalamus(Solved)
Explain the role of the following in homeostasis;
1. Skin
2. Liver
3. Hypothalamus
Date posted: April 20, 2018. Answers (1)
- Differentiate between: 1. Heterotrophic and autotrophic modes of nutrition. 2. Photosynthesis and chemosynthesis(Solved)
a) Differentiate between:
1. Heterotrophic and autotrophic modes of nutrition.
2. Photosynthesis and chemosynthesis
b) Explain the importance of the following in photosynthesis.
1. Guard cells
2. Xylem tissues
c) State any three adaptations of a leaf to photosynthesis.
Date posted: April 20, 2018. Answers (1)
- Briefly explain the following modes of nutrients; 1. Saprophytism 2. Mutualism 3. Holozoic(Solved)
Briefly explain the following modes of nutrients;
1. Saprophytism
2. Mutualism
3. Holozoic
Date posted: April 20, 2018. Answers (1)
- Explain the adaptations of respiratory surfaces in plants.
(Solved)
Explain the adaptations of respiratory surfaces in plants.
Date posted: April 19, 2018. Answers (1)
- Describe the digestion in the Ileum.(Solved)
Describe the digestion in the Ileum.
Date posted: April 19, 2018. Answers (1)
- State the characteristics of movable joints (Solved)
State the characteristics of movable joints
Date posted: April 19, 2018. Answers (1)
- (i) what is a joint? (ii) State the functions of joints (iii) Name the main types of joints (Solved)
i) What is a joint?
ii) State the functions of joints
iii) Name the main types of joints
Date posted: April 19, 2018. Answers (1)
- Describe the bones that form the appendicular skeleton (Solved)
Describe the bones that form the appendicular skeleton
Date posted: April 19, 2018. Answers (1)
- Describe how the various vertebrae are adapted to their functions (Solved)
Describe how the various vertebrae are adapted to their functions
Date posted: April 19, 2018. Answers (1)
- Describe the formation of urine until it is eventually removed from human body(Solved)
Describe the formation of urine until it is eventually removed from human body.
Date posted: April 19, 2018. Answers (1)
- Name the bones of the vertebral column (Solved)
Name the bones of the vertebral column
Date posted: April 19, 2018. Answers (1)
- (i) State the functions of the vertebral column (ii) State the general characteristics of vertebrae (Solved)
i) State the functions of the vertebral column
ii) State the general characteristics of vertebrae
Date posted: April 19, 2018. Answers (1)
- Describe how carbon dioxide produced by respiring muscle cells reaches the alveolar cavities in mammalian lungs(Solved)
Describe how carbon dioxide produced by respiring muscle cells reaches the alveolar cavities in mammalian lungs.
Date posted: April 19, 2018. Answers (1)
- Name three stains used in microscopy(Solved)
Name three stains used in microscopy.
Date posted: April 18, 2018. Answers (1)
- Name the main parts of the vertebral column giving the types of bones found in each part (Solved)
Name the main parts of the vertebral column giving the types of bones found in each part
Date posted: April 18, 2018. Answers (1)
- Explain how a finned fish is adapted to locomotion in water(Solved)
Explain how a finned fish is adapted to locomotion in water.
Date posted: April 18, 2018. Answers (1)
- Explain how a fish is adapted to living in water (Solved)
Explain how a fish is adapted to living in water
Date posted: April 18, 2018. Answers (1)
- Explain the importance of having an endoskeleton (Solved)
Explain the importance of having an endoskeleton.
Date posted: April 18, 2018. Answers (1)
- Give the reasons why support is necessary in animals(Solved)
Give the reasons why support is necessary in animals.
Date posted: April 18, 2018. Answers (1)
- Explain how support in plants is achieved(Solved)
Explain how support in plants is achieved
Date posted: April 18, 2018. Answers (1)