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viruses are much smaller in size
viruses lack enzymes needed for synthesis of proteins and nucleic acids
viruses are resistant to antibiotic
viruses posses either DNA or RNA
marlinbito answered the question on February 23, 2019 at 16:36
- State the role of oxytocin in parturition.(Solved)
State the role of oxytocin in parturition.
Date posted: February 23, 2019. Answers (1)
- Name the two bones that articulate with the femur at its distal end.(Solved)
Name the two bones that articulate with the femur at its distal end.
Date posted: February 23, 2019. Answers (1)
- (a)With a reason,state the structure responsible for intermittent growth in an insect.
Structure.......
Reason......
(b)What is the hormone responsible for growth in an insect?(Solved)
(a)With a reason,state the structure responsible for intermittent growth in an insect.
Structure......
Reason......
(b)What is the hormone responsible for growth in an insect?
Date posted: February 23, 2019. Answers (1)
- State the causative agent and method of transmission of cholera.
(i)Causative agent......
(ii)Method of transmission.....(Solved)
State the causative agent and method of transmission of cholera.
(i)Causative agent......
(ii)Method transmission...
Date posted: February 23, 2019. Answers (1)
- Explain the role of intercoastal muscles in:
(i)Inspiration.
(ii)Expiration.(Solved)
Explain the role of intercostal muscles in:
(i)Inspiration.
(ii)Expiration.
Date posted: February 23, 2019. Answers (1)
- Explain the terms:
(i)Natural immunity.
(ii)Artificial immunity.(Solved)
Explain the terms:
(i)Natural immunity.
(ii)Artificial immunity.
Date posted: February 22, 2019. Answers (1)
- Name three plant tissues that are involved in support.(Solved)
Name three plant tissues that are involved in support.
Date posted: February 22, 2019. Answers (1)
- State the number of chromosomes found in human somatic cell.(Solved)
State the number of chromosomes found in human somatic cell.
Date posted: February 22, 2019. Answers (1)
- Name three main parts of an animal cell as seen under a light microscope.(Solved)
Name three main parts of an animal cell as seen under a light microscope.
Date posted: February 22, 2019. Answers (1)
- What is:
(i)Ichthyology.
(ii)Entomology.
(iii)Cytology.(Solved)
What is:
(i)Ichthyology.
(ii)Entomology.
(iii)Cytology.
Date posted: February 22, 2019. Answers (1)
- On a hot day the testis hang loosely in the scrotal sac while on a cold day they are held next to the body .Explain...(Solved)
On a hot day the testis hang loosely in the scrotal sac while on a cold day they are held next to the body. Explain the importance of this behaviour to humans.
Date posted: February 22, 2019. Answers (1)
- (A)How is mitochondria adapted to its function?
(B)(i)State which of the following organs has the highest number of mitochondria per cell;liver,kidney,stomach.
(ii)Give a reason for your answer...(Solved)
(A)How is mitochondria adapted to its function?
(B)(i)State which of the following organs has the highest number of mitochondria per cell: liver,kidney,stomach.
(ii)Give your answers in b(i)above.
Date posted: February 22, 2019. Answers (1)
- Distinguish between excretion and egestion(Solved)
Distinguish between excretion and egestion.
Date posted: February 22, 2019. Answers (1)
- State how the gills of a bony fish are structurally adapted for gaseous exchange.(Solved)
State how the gills of a bony fish are structurally adapted for gaseous exchange.
Date posted: February 22, 2019. Answers (1)
- What are the differences between blood in the pulmonary artery and that in pulmonary vein?(Solved)
What are the differences between blood in the pulmonary artery and pulmonary vein?
Date posted: February 22, 2019. Answers (1)
- (A)(i)Give one difference between proteins and lipids.
(ii)What common role do the two compounds play in the cell?
(B)State two ways in which the external structure of...(Solved)
(A)(i)Give one difference between proteins and lipids.
(ii)What common role do the two compounds play in the cell?
(B)State two ways in which the external structure of a leaf is adapted for photosynthesis.
Date posted: February 22, 2019. Answers (1)
- A certain plant had broad and large leaves.While another had narrow needle like leaves.State the natural habitat of each of the plants.
(i)Broad,large leaves.....
(ii)Narrow needle-like leaves....(Solved)
A certain plant had broad and large leaves. While another had narrow needle like leaves. State the natural habitat of each of the plants.
(i)Broad,large leaves....
(ii)Narrow needle-like leaves....
Date posted: February 22, 2019. Answers (1)
- The scientific name for housefly is Musca domestica.
(i)State the name of the genus of the housefly.
(ii)State the system that has been used in naming the...(Solved)
The scientific name for housefly is Musca domestica.
(i)State the name of the genus of the housefly.
(ii)State the system that has been used in naming the housefly.
Date posted: February 22, 2019. Answers (1)
- State the function of each of the following parts of a light microscope:
(i)Mirror
(ii)Eye piece lens
(iii)Fine adjustment knob(Solved)
State the function of each of the following parts of a light microscope:
(i)Mirror
(ii)Eye piece lens
(iii)Fine adjustment knob
Date posted: February 22, 2019. Answers (1)
- (A)State the importance of each of the following to the life of organisms:
(i)Respiration
(ii)Excretion(Solved)
(A)State the importance of each of the following to the life of organisms:
(i)Respiration
(ii)Excretion
Date posted: February 22, 2019. Answers (1)