They are highly vascularized to increase the concentration gradient for maximum gaseous exchange.
They posses a counter-current flow system where blood flows in the opposite direction to the movement of water thus creating a steep concentration gradient for maximum gaseous exchange.
The gill filaments and the gill bar are elongated to offer a large surface area for maximum gaseous exchange.
There are numerous gill filaments to increase the surface area on which gaseous exchange takes place.
The gill filaments are moistened for easy dissolving of respiratory gases and diffusion.
There are gill rakers which prevent solids from coming into contact with the delicate parts of the gill system for maximum gaseous exchange.
Presence of an operculum which provides maximum time for diffusion of gases before being released for maximum gaseous exchange.
Osanariel answered the question on May 25, 2018 at 00:18
-
Amoeba is a tiny, one-celled organism.(a) State: (i) one function of contractile vacuole (ii) one function of psedopodium (b) Give one difference between a plant cell and an amoeba.
(Solved)
1.Amoeba is a tiny, one-celled organism.
(a) State:
i) Function of contractile vacuole
ii) Function of psedopodium
(b) Give one difference between a plant cell and an amoeba.
Date posted:
May 21, 2018
.
Answers (1)
-
Explain capture recapture method of population size estimation
(Solved)
Explain capture recapture method of population size estimation.
Date posted:
May 19, 2018
.
Answers (1)
-
Give the similarities and differences between a monocotyledonous and dicotyledonous stem
(Solved)
Give the similarities and differences between a monocotyledonous and dicotyledonous stem.
Date posted:
May 13, 2018
.
Answers (1)
-
(a)(i) Define transport. (ii) Explain the necessity of transport in plants and animals. (b) (i) Describe the structure and function of root hair...
(Solved)
a) i) Define transport.
ii) Explain the necessity of transport in plants and animals.
b) i) Describe the structure and function of root hair.
ii) State ways in which the root hairs are adapted to their functions.
Date posted:
May 13, 2018
.
Answers (1)
-
State FOUR ways of preventing vulnerability of women to HIV/AIDS
(Solved)
State FOUR ways of preventing vulnerability of women to HIV/AIDS.
Date posted:
May 13, 2018
.
Answers (1)
-
State FOUR advantages of Anti-Retroviral Drugs (ARVs)
(Solved)
State FOUR advantages of Anti-Retroviral Drugs (ARVs).
Date posted:
May 13, 2018
.
Answers (1)
-
Write a note on dipalmitoyl lecithin.
(Solved)
Write a note on dipalmitoyl lecithin.
Date posted:
May 10, 2018
.
Answers (1)
-
Write a note and functions on plasmalogens.
(Solved)
Write a note and functions on plasmalogens
Date posted:
May 10, 2018
.
Answers (1)
-
Write notes on structure and function of lyso phospholipids.
(Solved)
Write notes on structure and function of lyso phospholipids.
Date posted:
May 10, 2018
.
Answers (1)
-
Define lipids. Write briefly about their functions.
(Solved)
Define lipids. Write briefly about their functions.
Date posted:
May 10, 2018
.
Answers (1)
-
Define cyclic peptide and toxic peptide. Give examples.
(Solved)
Define cyclic peptide and toxic peptide. Give examples.
Date posted:
May 10, 2018
.
Answers (1)
-
Write the glutathione composition, short form and functions.
(Solved)
Write the glutathione composition, short form and functions.
Date posted:
May 10, 2018
.
Answers (1)
-
Write notes on acute phase proteins.
(Solved)
Write notes on acute phase proteins.
Date posted:
May 10, 2018
.
Answers (1)
-
Write briefly about Bence-Jones protein
(Solved)
Write briefly about Bence-Jones protein
Date posted:
May 10, 2018
.
Answers (1)
-
Classify proteins on the basis of solubility giving examples for each class
(Solved)
Classify proteins on the basis of solubility giving examples for each class.
Date posted:
May 10, 2018
.
Answers (1)
-
Write briefly about paper chromatography.
(Solved)
Write briefly about paper chromatography.
Date posted:
May 10, 2018
.
Answers (1)
-
Write notes on mutarotation.
(Solved)
Write notes on mutarotation.
Date posted:
May 10, 2018
.
Answers (1)
-
Define epimers and anomers. Give examples.
(Solved)
Define epimers and anomers. Give examples.
Date posted:
May 10, 2018
.
Answers (1)
-
Define ionophores and ion channels. Give examples
(Solved)
Define ionophores and ion channels. Give examples
Date posted:
May 10, 2018
.
Answers (1)
-
Describe transport of molecules across cell membrane with examples.
(Solved)
Describe transport of molecules across cell membrane with examples.
Date posted:
May 10, 2018
.
Answers (1)