Get premium membership and access questions with answers, video lessons as well as revision papers.
a)Plasmolysis turgidity
Plant cell looses water by osmosis Plant cell gain water by osmosis
b)i)Increase in oxygen concentration increases respiration to produce more energy for higher rate of active transport
ii)Inhibit respiratory enzymes hence reduce energy production thus reduce active transport which require energy
Githiari answered the question on September 13, 2017 at 18:57
- (a)State two functions of the plasma membrane?(Solved)
(a)State two functions of the plasma membrane?
(b) Give the synthetic role of smooth endoplasmic reticulum
Date posted: September 13, 2017. Answers (1)
- (a)Give two contribution made by Carolus Linnaeus to classification (b) Classify a Human being base on the Order and Family it belong?...(Solved)
(a)Give two contribution made by Carolus Linnaeus to classification
(b) Classify a Human being base on the Order and Family it belong
Date posted: September 13, 2017. Answers (1)
- In what two ways does excretion differ between plants and animals?(Solved)
In what two ways does excretion differ between plants and animals?
Date posted: September 13, 2017. Answers (1)
- Define facultative anaerobes as used in respiration(Solved)
Define facultative anaerobes as used in respiration.
Date posted: September 13, 2017. Answers (1)
- Why is dropping of leaves important to plants on a hot sunny afternoon?(Solved)
Why is dropping of leaves important to plants on a hot sunny afternoon?
Date posted: September 13, 2017. Answers (1)
- The equation below represents a metabolic reaction that occurs in the mammalian liver
Amino acids -------> Organic compounds + urea(Solved)
The equation below represents a metabolic reaction that occurs in the mammalian liver
Amino acids ------->Organic compounds + urea
(a) Name the process
(b) What is the course of amino acids in the process?
(c) What is the difference between essential and non-essential amino acids?
Date posted: September 13, 2017. Answers (1)
- The chemical equation shown below represents a breakdown of a certain substrate.
C57H104O6 + 80O2----->57CO2 + 52H2O + Energy(Solved)
The chemical equation shown below represents a breakdown of a certain substrate.
C57H104O6 + 80O2----->57CO2 + 52H2O + Energy
(a) Calculate the respiratory quotient (RQ) of the substrate
(b) Identify the possible substrate which was oxidized
Date posted: September 13, 2017. Answers (1)
- Name three types of nerve cells found in the nervous system of vertebrates(Solved)
Name three types of nerve cells found in the nervous system of vertebrates
Date posted: September 13, 2017. Answers (1)
- Peter stayed with his parents in Malindi for eight years. His blood count was about 4.5 million per one milliliter of blood. They migrated to...(Solved)
Peter stayed with his parents in Malindi for eight years. His red blood cell count was about 4.5 million per one milliliter of blood. They migrated to Kisii town and after one year his red blood cell count was approximately 6.2 million per one milliliter of blood. Explain reason for rise in the number of red blood cells.
Date posted: September 13, 2017. Answers (1)
- Outline two advantages of polyploidy to a farmer(Solved)
Outline two advantages of polyploidy to a farmer
Date posted: September 13, 2017. Answers (1)
- Explain the importance of keeping bees in an orchard (garden of fruits)(Solved)
Explain the importance of keeping bees in an orchard (garden of fruits)
Date posted: September 13, 2017. Answers (1)
- Explain how each of the following processes causes variation (i) Meiosis (ii) Fertilization(Solved)
Explain how each of the following processes causes variation (i) Meiosis (ii) Fertilization
Date posted: September 13, 2017. Answers (1)
- State how the following parts of male reproductive system are adapted to their function (i) Vas deferens (ii) Epididymis(Solved)
State how the following parts of male reproductive system are adapted to their function (i) Vas deferens (ii) Epididymis
Date posted: September 13, 2017. Answers (1)
- Outline two scientific skills that would be needed in carrying out an experiment on translocation of food in plants from the leaves to the rest...(Solved)
Outline two scientific skills that would be needed in carrying out an experiment on translocation of food in plants from the leaves to the rest of the plant
Date posted: September 13, 2017. Answers (1)
- Which biological tool would be useful to an entomologist when collecting termites on the surface of a rock?(Solved)
Which biological tool would be useful to an entomologist when collecting termites on the surface of a rock?
Date posted: September 13, 2017. Answers (1)
- What are the weaknesses in Lamarck's theory of evolution?(Solved)
Identify the weaknesses in Lamarck's theory of evolution
Date posted: September 13, 2017. Answers (1)
- State the Lamarck's theory of evolution(Solved)
State the Lamarck's theory of evolution
Date posted: September 13, 2017. Answers (1)
- Seed viability is one of the internal conditions necessary for germination. State two factors that may lead to loss of viability(Solved)
Seed viability is one of the internal conditions necessary for germination. Give two factors that may lead to loss of viability
Date posted: September 13, 2017. Answers (1)
- Give a reason why mammalian lungs are enclosed in an air-tight pleural membrane(Solved)
Give a reason why mammalian lungs are enclosed in an air-tight pleural membrane
Date posted: September 13, 2017. Answers (1)
- Why do guard cells lie in close association with epidermal cells?(Solved)
Why do guard cells lie in close association with epidermal cells?
Date posted: September 13, 2017. Answers (1)