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(a) (i) An invagination develops at the area of contact with bacteria / cell membrane fold; and flow around the bacteria forming a food vacuole / phygocytic vesicle;
(ii) Enzymes secreted by Lysosomes into the food vacuole; digestion occurs and undigested materials are expelled when the vacuole moves to the edge and fuses with plasma membrane / soluble food diffuses into the cell;
(b) (i) Protozoa;
(ii) Produce antibodies; antitoxins
Kavungya answered the question on September 30, 2019 at 11:50
- a)Name the principal components of cell membrane.
(b)(i) Why would a cell allow some substances to pass through it but not others?
(ii) Other than the...(Solved)
a)Name the principal components of cell membrane.
(b)(i) Why would a cell allow some substances to pass through it but not others?
(ii) Other than the property of semi- permeability stated in b (i) above, state two other properties of a cell membrane
( c)Explain what would happen to the red blood cells if placed in concentrated salt solution.
Date posted: September 30, 2019. Answers (1)
- Give the function of the following features found in the wall of trachea and bronchi in
a mammal.
(i) Ciliated cells
(ii) Mucus secreting cells(Solved)
Give the function of the following features found in the wall of trachea and bronchi in
a mammal.
(i) Ciliated cells
(ii) Mucus secreting cells
Date posted: September 30, 2019. Answers (1)
- A student estimating a cell size of an onion epidermal cells observed the following on the microscope field of view using a transparent ruler.(Solved)
A student estimating a cell size of an onion epidermal cells observed the following on the microscope field of view using a transparent ruler.
The student identified 20 cells across the field of view. Calculate the size of the cell inMicrometers (show your working)
Date posted: September 30, 2019. Answers (1)
- Explain why a thirsty person should not drink soda to quench the thirst.(Solved)
Explain why a thirsty person should not drink soda to quench the thirst.
Date posted: September 30, 2019. Answers (1)
- State the disease and treatment in condition where is increase in blood sugar and appearance of sugar in urine of man.(Solved)
State the disease and treatment in condition where is increase in blood sugar and appearance of sugar in urine of man.
Date posted: September 30, 2019. Answers (1)
- Name the enzyme responsible for breaking down sodium hydrogen carbonate in mammalian blood to release carbon dioxide.(Solved)
Name the enzyme responsible for breaking down sodium hydrogen carbonate in mammalian blood to release carbon dioxide.
Date posted: September 30, 2019. Answers (1)
- Study the diagram below and answer the questions that follow:(Solved)
Study the diagram below and answer the questions that follow:
(a) Identify the organelle.
(b)Name the structure labelled K
(c)State two functions of the organelle named in (a) above
Date posted: September 30, 2019. Answers (1)
- Explain why vegetables should not be overcooked.(Solved)
Explain why vegetables should not be overcooked.
Date posted: September 30, 2019. Answers (1)
- State two precautions which should be taken when storing a microscope after a laboratory exercise.(Solved)
State two precautions which should be taken when storing a microscope after a laboratory exercise.
Date posted: September 30, 2019. Answers (1)
- State the use of each of the following apparatus:
I)Bait trap
ii) Specimen bottle
iii) Pitfall trap(Solved)
State the use of each of the following apparatus:
I)Bait trap
ii) Specimen bottle
iii) Pitfall trap
Date posted: September 30, 2019. Answers (1)
- The binomial name of housefly is MUSCA DOMESTICA.
i) Statetwo mistakes in the way the scientific name is written(Solved)
The binomial name of housefly is MUSCA DOMESTICA.
i) Statetwo mistakes in the way the scientific name is written.
ii) Re-write the name in correct manner following the rules of binomial nomenclature
Date posted: September 30, 2019. Answers (1)
- State advantages of fruit/seed dispersal.(Solved)
State advantages of fruit/seed dispersal.
Date posted: September 30, 2019. Answers (1)
- Name the branch of biology involved in the study of
a. Relationships of living with each other and their environment.
b. Identification and classification of organisms(Solved)
Name the branch of biology involved in the study of
a. Relationships of living with each other and their environment.
b. Identification and classification of organisms
Date posted: September 30, 2019. Answers (1)
- Explain the method of transfusion and prevention of:
(i) Typhoid and Amoebic dysentry.
(ii) Malaria(Solved)
Explain the method of transfusion and prevention of:
(i) Typhoid and Amoebic dysentry.
(ii) Malaria
Date posted: September 30, 2019. Answers (1)
- Briefly explain the process of inhalation in man.(Solved)
Briefly explain the process of inhalation in man.
Date posted: September 30, 2019. Answers (1)
- A baby who is suckling has a lower chance of contracting infection than one who feeds from the bottle. Explain.(Solved)
A baby who is suckling has a lower chance of contracting infection than one who feeds from the bottle. Explain.
Date posted: September 30, 2019. Answers (1)
- What are the advantages and disadvantages of having blood group O?(Solved)
What are the advantages and disadvantages of having blood group O?
Date posted: September 30, 2019. Answers (1)
- Excessive blood loss can be rectified by blood transfusion in which blood from one person donor, is transferred into the patients blood stream.
Complete the table.
(Solved)
Excessive blood loss can be rectified by blood transfusion in which blood from one person donor, is transferred into the patients blood stream.
Complete the table.
Date posted: September 30, 2019. Answers (1)
- Calculate the respiration quotient (RQ) from the equation below:-(Solved)
Calculate the respiration quotient (RQ) from the equation below:-
a)
b) Identify the substrate being respired in the above equation
Date posted: September 30, 2019. Answers (1)
- i) Name the type of immunity developed by the body when one is vaccinated against a certain disease.
ii) Name the blood groups of a person...(Solved)
i) Name the type of immunity developed by the body when one is vaccinated against a certain disease
ii) Name the blood groups of a person whose blood plasma has antibody b .
iii) State the role of thrombin in blood clotting.
Date posted: September 30, 2019. Answers (1)