
Fungi: Yeast is used in the production of alcohol; and raising dough in baking; production of vitamins B2 and B12 and for beer brewing; some mushrooms are used as food; Saprophytic fungi such as Mucor spp/Rhizopus spp cause food spoilage; are also used in retting of natural fibres such as flax; and in the curing of tea and tobacco; The fungi also decompose organic matter helping to clean the environment and recycle materials. Saprophytic fungi are also used to make silage; compost; and digesting sewage in sewage treatment plants; Penicillium spp is used for the manufacture of antibiotics; Fungi is used for making ghee and cheese in dairies; parasitic fungisuch as Phytophthora spp infest crops e.g. potatoes and tomatoes and destroy them/cause blight; somefungi such as Aspergillus spp produce food poisons and is also used in the synthesis of enzyme amylase; Mycorrizae fungi enable trees e.g. pinus to absorb water amd mineral salts more efficiently in silviculture/man-made forests; some fungi such as and Tinus spp cause diseases such as yeast infections (Candidiasis, ‘Athlete’s foot’) and ‘ringworms’ respectively; some Candida spp is used in making enriched food/single-celled proteins used in animal feeds/silage; Gibberella spp is used in the synthesis of Gibberellins for plant growth; it also causes poor crop growth through bolting of plants e.g. rice and wheat;
Bacteria: Some bacteria e.g. Vibrio spp cause disease to humans and other animals (any one disease); Clostridium spp and Bacillus spp bacteria are used in retting of flax; Lactobacillus spp are important in the manufacture of yoghurt/silage; and lactic acid; some bacteria e.g. Streptomyces are used in making antibiotics (Streptomycin); organic acids such ac acetic and ethanoic acids are made using Acetobacter spp of bacteria; some bacteria like the soil bacteria (Bacillus spp) make enzymes used in detergents; Escherichia coli (E. coli)/colon bacteria contaminates drinking water and may cause diseases; bacteria such as Bacillus spp and are used in making hormones such as insulin through genetic engineering/modification; all saprophytic bacteria such as E. coli/Bacillus spp/Pseudomonas spp are used in the production of methane/biogas; Rhizobium spp of bacteria helps in nitrogen fixation making soils fertile.
Edwinnyongesa8 answered the question on December 6, 2018 at 03:36
-
Discuss Lamarck’s and Darwin’s theories of evolution
(Solved)
Discuss Lamarck’s and Darwin’s theories of evolution
Date posted:
December 4, 2018
.
Answers (1)
-
Which organelle is most abundant in white blood cell?
(Solved)
Which organelle is most abundant in white blood cell?
Date posted:
November 13, 2018
.
Answers (1)
-
Explain how mammals regulate their body temperature and relate this to their body size
(Solved)
Explain how mammals regulate their body temperature and relate this to their body size
Date posted:
November 7, 2018
.
Answers (1)
-
What are the limitations of dry mass measurement in assessing growth?
(Solved)
What are the limitations of dry mass measurement in assessing growth?
Date posted:
October 21, 2018
.
Answers (1)
-
Why is change in dry mass measurement of an organism the best indicator of growth?
(Solved)
Why is change in dry mass measurement of an organism the best indicator of growth?
Date posted:
October 21, 2018
.
Answers (1)
-
Explain why short distance runners breathe quickly and deeply at the end of a race
(Solved)
Explain why short distance runners breathe quickly and deeply at the end of a race.
Date posted:
October 13, 2018
.
Answers (1)
-
Draw a labeled diagram of mammalian nephron
(Solved)
Draw a labeled diagram of mammalian nephron.
Date posted:
October 10, 2018
.
Answers (1)
-
Draw and label a mammalian skin.
(Solved)
Draw and label a mammalian skin.
Date posted:
October 10, 2018
.
Answers (1)
-
(i)Draw and label a mitochondrion. (ii) State the most important function of mitochondria.iii) Give the functions of the labeled parts.
(Solved)
(i)Draw and label a mitochondrion. (ii) State the most important function of mitochondria.iii) Give the functions of the labeled parts.
Date posted:
October 10, 2018
.
Answers (1)
-
Describe the general layout of the transport system in mammals
(Solved)
Describe the general layout of the transport system in mammals
Date posted:
October 9, 2018
.
Answers (1)
-
Explain how drooping of leaves on a hot sunny day is advantageous to a plant
(Solved)
Explain how drooping of leaves on a hot sunny day is advantageous to a plant.
Date posted:
October 9, 2018
.
Answers (1)
-
Compare the internal structure of a monocotyledonous and dicotyledonous stem
(Solved)
Compare the internal structure of a monocotyledonous and dicotyledonous stem.
Date posted:
October 9, 2018
.
Answers (1)
-
How is a desert camel adapted to survive in the desert conditions?
(Solved)
How is a desert camel adapted to survive in the desert conditions?
Date posted:
October 9, 2018
.
Answers (1)
-
Account for the loss in dry weight of cotyledons in a germinating bean seed.
(Solved)
Account for the loss in dry weight of cotyledons in a germinating bean seed.
Date posted:
October 8, 2018
.
Answers (1)
-
Draw an intermittent curve and explain the various stages
(Solved)
Draw an intermittent curve and explain the various stages
Date posted:
October 8, 2018
.
Answers (1)
-
Draw a sigmoid growth curve and explain its different phases/stages
(Solved)
Draw a sigmoid growth curve and explain its different phases/stages
Date posted:
October 8, 2018
.
Answers (1)
-
Draw and label the human male reproductive system
(Solved)
Draw and label the human male reproductive system
Date posted:
October 5, 2018
.
Answers (1)
-
What are dehiscent fruits?
(Solved)
What are dehiscent fruits?
Date posted:
October 5, 2018
.
Answers (1)
-
Give the types of juicy fruits with aid of diagrams.
(Solved)
Give the types of juicy fruits with aid of diagrams.
Date posted:
October 5, 2018
.
Answers (1)
-
Explain the following types of placentation
Marginal
(Solved)
Explain the following types of placentation
Marginal
Date posted:
October 5, 2018
.
Answers (1)