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- Cytoplasmic filaments/strands along which food streams;
- Companion cells have mitochondria that provide energy for translocation;
- Sieve plates with sieve pores thorugh which cytoplasmic filaments pass.
- Photoplasmic material pushed on the sides to create lumen space for translocation;
Kavungya answered the question on June 17, 2019 at 13:15
- Explain why a fresh wound on the skin bleeds more on a hot sunny day than on a cold chilly day(Solved)
Explain why a fresh wound on the skin bleeds more on a hot sunny day than on a cold chilly day.
Date posted: June 17, 2019. Answers (1)
- Why is an effective respiratory system often associated with a circulatory system.(Solved)
Why is an effective respiratory system often associated with a circulatory system.
Date posted: June 17, 2019. Answers (1)
- Differentiate between respiration and respiratory surface.(Solved)
Differentiate between respiration and respiratory surface.
Date posted: June 17, 2019. Answers (1)
- The equation below summarizes a metabolic process in plants.
Glucose----> Ethanol + carbon (IV) oxide+ Energy
State two industrial applications of the above equation.(Solved)
The equation below summarizes a metabolic process in plants.
Glucose----> Ethanol + carbon (IV) oxide+ Energy
State two industrial applications of the above equation.
Date posted: June 17, 2019. Answers (1)
- Give two reasons why fats are not the main respiratory substrates in the
body of a mammal and yet they give a lot of energy when...(Solved)
Give two reasons why fats are not the main respiratory substrates in the
body of a mammal and yet they give a lot of energy when oxidized.
Date posted: June 17, 2019. Answers (1)
- Explain why a rat, though small eats more frequently than an elephant(Solved)
Explain why a rat, though small eats more frequently than an elephant
Date posted: June 17, 2019. Answers (1)
- Whooping cough is a disease of the respiratory system. Name the causative agents and give two symptoms(Solved)
Whooping cough is a disease of the respiratory system. Name the causative agents and give two symptoms
Date posted: June 17, 2019. Answers (1)
- Briefly explain Krebs cycle in a plant cell during anaerobic respiration(Solved)
Briefly explain Krebs cycle in a plant cell during anaerobic respiration.
Date posted: June 17, 2019. Answers (1)
- One molecule of lipid gives more energy than one molecule of glucose when
respired aerobically
but it is NOT always used as a respiratory substrate
a) Give two...(Solved)
One molecule of lipid gives more energy than one molecule of glucose when
respired aerobically
but it is NOT always used as a respiratory substrate
a) Give two reasons for this
b) Name two disaccharides which are reducing sugar
Date posted: June 17, 2019. Answers (1)
- State two phases of aerobic respiration.(Solved)
State two phases of aerobic respiration.
Date posted: June 17, 2019. Answers (1)
- Removal of the apical bud from a shrub is a practice that results in the
development of many
lateral buds which later form branches
(a) Give reasons for...(Solved)
Removal of the apical bud from a shrub is a practice that results in the
development of many
lateral buds which later form branches
(a) Give reasons for the development of lateral branches after the removal of
the apical bud
(b) Suggest one application of this practice?
Date posted: June 17, 2019. Answers (1)
- Name the type of response exhibited by the following:
(a) A pollen tube growing towards the embryo sac
(b) Maggots moving from lit side of a box...(Solved)
Name the type of response exhibited by the following:
(a) A pollen tube growing towards the embryo sac
(b) Maggots moving from lit side of a box to the dark side
Date posted: June 17, 2019. Answers (1)
- (a) Name the part of the mammalian eye that:
(i) Transmits impulses to the brain
(ii) Regulates the amount of light entering the eye
(b) State the changes...(Solved)
(a) Name the part of the mammalian eye that:
(i) Transmits impulses to the brain
(ii) Regulates the amount of light entering the eye
(b) State the changes that occur in the part of the eye named in
(a) (ii) above when one moved
from bright light to dim light conditions
Date posted: June 17, 2019. Answers (1)
- State how the nerve cell structure is suited to its function of impulse transmission(Solved)
State how the nerve cell structure is suited to its function of impulse transmission
Date posted: June 17, 2019. Answers (1)
- State the functions of the following structures of the mammalian ear
a) Eustachian tube
b) Essicles(Solved)
State the functions of the following structures of the mammalian ear
a) Eustachian tube
b) Essicles
Date posted: June 17, 2019. Answers (1)
- Briefly explain the role of the following part of skin
a) Cornified layer
b) Malpighian layer(Solved)
Briefly explain the role of the following part of skin
a) Cornified layer
b) Malpighian layer
Date posted: June 17, 2019. Answers (1)
- Name a disease that causes thickening and hardening of arteries(Solved)
Name a disease that causes thickening and hardening of arteries
Date posted: June 17, 2019. Answers (1)
- A student was traveling from Nairobi to Mombasa. As the bus descended
down hill he felt an
unpleasant sensation in the ear.
(a) How did the sensation come...(Solved)
A student was traveling from Nairobi to Mombasa. As the bus descended
down hill he felt an
unpleasant sensation in the ear.
(a) How did the sensation come about?
(b) How can the unpleasant sensation be relieved?
Date posted: June 17, 2019. Answers (1)
- When shoots of young plants are exposed to unidirectional light they bend towards light;
a) Name the type of response exhibited by the young shoots
b) Explain...(Solved)
When shoots of young plants are exposed to unidirectional light they bend towards light;
a) Name the type of response exhibited by the young shoots
b) Explain the cause of the observation above
Date posted: June 17, 2019. Answers (1)
- Explain why it is important to go for voluntary counseling and testing (VCT) on HIV/AIDS(Solved)
Explain why it is important to go for voluntary counseling and testing (VCT) on HIV/AIDS
Date posted: June 17, 2019. Answers (1)