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Scientific Article Notes, Question and answers, June 2013
Unit 5, by Stafford Valentine Redden (M.Sc.; M.Ed.; M.A.;
Ph.D)
Scientific article for use with Question 7 Naked and ugly: The new face of lab rats 1. In a small
room in the lab-animal wing of the University…

Page 3

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responsible for the sensation of pain.
3. A dozen species of mole rat exist, all native to sub-Saharan Africa. Naked mole rats stand
out, though, not least because they appear completely bald. They are also extremely social,
living underground in elaborate networks of tunnels and chambers in groups of up…

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Page 2 of 16
Paragraph 3 SAQ7. Explain why the mole rat populations may be termed as endemic.
This is because all species of mole rats are found in sub-Saharan Africa alone.
SAQ8. Potato contains a lot of starch. Suggest the importance of potato in the diet of
mole rats.…

Page 6

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heterozygosity or genetic diversity in the offspring. This could make the population less
adaptable and vulnerable to environmental change.
SAQ15. How is genetic variation brought about? Mutations, crossing over, random
assortment of chromosomes and random fusion of genetically variable gametes.
SAQ16. Explain what is meant by the term Niche. A…

Page 7

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Comment [S23]: the process of searching for something, especially a search for food and supplies
Comment [S24]: The form and structure of an organism or one of its parts
Comment [S25]: having a body temperature that varies according to the temperature of the local atmosphere
Comment [S26]: the thick sensitive…

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Page 3 of 16
Paragraph 5 SAQ20. Melanin is a pigment found in the skin and fur of mammals. Explain
the environmental influence on the phenotype with reference to melanin production. High
exposure to UV radiation stimulates the increased production of Melanocyte Stimulating
Hormone (MSH) and MSH receptor on melanocytes.…

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that a larger body size caused a longer lifespan. Explain why this may not be a valid
conclusion.
1. Correlation does not necessarily mean causation. 2. In general - if size caused the
lifespan to change, then the statement would always be true. 3. Not enough data may
have been…

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Pages in this set

Page 1

Preview of page 1

Page 2

Preview of page 2
Page 1 of 16

Scientific Article Notes, Question and answers, June 2013
Unit 5, by Stafford Valentine Redden (M.Sc.; M.Ed.; M.A.;
Ph.D)
Scientific article for use with Question 7 Naked and ugly: The new face of lab rats 1. In a small
room in the lab-animal wing of the University…

Page 3

Preview of page 3
responsible for the sensation of pain.
3. A dozen species of mole rat exist, all native to sub-Saharan Africa. Naked mole rats stand
out, though, not least because they appear completely bald. They are also extremely social,
living underground in elaborate networks of tunnels and chambers in groups of up…

Page 4

Preview of page 4

Page 5

Preview of page 5
Page 2 of 16
Paragraph 3 SAQ7. Explain why the mole rat populations may be termed as endemic.
This is because all species of mole rats are found in sub-Saharan Africa alone.
SAQ8. Potato contains a lot of starch. Suggest the importance of potato in the diet of
mole rats.…

Page 6

Preview of page 6
heterozygosity or genetic diversity in the offspring. This could make the population less
adaptable and vulnerable to environmental change.
SAQ15. How is genetic variation brought about? Mutations, crossing over, random
assortment of chromosomes and random fusion of genetically variable gametes.
SAQ16. Explain what is meant by the term Niche. A…

Page 7

Preview of page 7
Comment [S23]: the process of searching for something, especially a search for food and supplies
Comment [S24]: The form and structure of an organism or one of its parts
Comment [S25]: having a body temperature that varies according to the temperature of the local atmosphere
Comment [S26]: the thick sensitive…

Page 8

Preview of page 8

Page 9

Preview of page 9
Page 3 of 16
Paragraph 5 SAQ20. Melanin is a pigment found in the skin and fur of mammals. Explain
the environmental influence on the phenotype with reference to melanin production. High
exposure to UV radiation stimulates the increased production of Melanocyte Stimulating
Hormone (MSH) and MSH receptor on melanocytes.…

Page 10

Preview of page 10
that a larger body size caused a longer lifespan. Explain why this may not be a valid
conclusion.
1. Correlation does not necessarily mean causation. 2. In general - if size caused the
lifespan to change, then the statement would always be true. 3. Not enough data may
have been…

Comments

No comments have yet been made