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GNB502S- GENERAL BIOLOGY 1B - JAN 2020 |
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NAMIBIA UNIVERSITY
OF SCIENCE AND TECHNOLOGY
FACULTY OF HEALTH AND APPLIED SCIENCES
DEPARTMENT OF NATURAL AND APPLIED SCIENCES
QUALIFICATION: BACHELOR OF SCIENCE
QUALIFICATION CODE: 07BOSC
LEVEL: 5
COURSE NAME: GENERAL BIOLOGY 1B_ | COURSE CODE: GNB502S
SESSION: JANUARY 2020
PAPER: THEORY
DURATION: 3 HOURS
MARKS: 100
SUPPLEMENTARY / SECOND OPPORTUNITY EXAMINATION QUESTION PAPER
EXAMINER
DR JEYA KENNEDY
MOpeERATOR: | DR LAMECH MWAPAGHA
INSTRUCTIONS
Write clearly and neatly
Number the answers clearly
All written work MUST be done in blue or black ink
No books, notes and other additional aids are allowed
Mark all answers clearly with their respective question numbers
PERMISSIBLE MATERIALS
None
THIS QUESTION PAPER CONSISTS OF 5 PAGES
(Including this front page)
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QUESTION 1:
Multiple choices
[3]
1.1 Which of the following is mismatched?
(1)
a) Ligaments - bind muscles to bone
b) Cardiac muscle cells - have multiple nuclei
c) Chondrocytes - cartilage cells
d) Adipose cells - found in loose connective tissue
1.2 Which of the following plant cells is dead at maturity?
(1)
a) Epidermal cell
b) Companion cell
c) Vessel element
d) Collenchyma cell
1.3
In a college greenhouse, a new employee observes fuzzy mycorrhizae in the roots of
all plants. Destroying no part of the plants, she carefully removes the mycorrhizae.
The most immediate result of this “cleaning” is that the plants cannot:
(1)
a) carry out photosynthesis
b) store carbohydrate in their roots
c) transport water up their stems
d) extract as much nitrogen from the soil
QUESTION 2:
Fill in the blanks
[4]
2.1
Ligaments and tendons are formed of
tissue.
(1)
2.2
Name the germ layer that gives rise to the outer covering of the body and the nervous
system is the
.
(1)
2.3
Epidermis and periderm are
tissues.
(1)
2.4 A(an)
is a symbiotic association between an algae and a fungus.
(1)
QUESTION 3:
Define the following terms
[3]
3.1 Undulating membrane
(1)
3.2 Trichocysts
(1)
3.3 Epinephrine
(1)
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QUESTION 4:
Distinguish between the pairs of the following terms.
4.1 Mouth pore; anal pore
4.2
Staphylococcus; streptococcus
4.3 Calcitonin; parathyroid hormone
QUESTION 5:
One sentences answers
[4]
5.1 Whowas first person to use Latin for scientific naming?
(1)
5.2
What is the basis of classification of protozoan?
(1)
5.3
In what part of a plant would you expect to find sclerenchyma cells?
(1)
5.4
Which hormone(s) is (are) produced by this gland?
(1)
QUESTION 6:
Short questions
[16]
6.1 Describe a cladogram?
6.2 Give the shape of these viruses.
(2)
a. Bacteriophage
b. Polio virus
c. Adenovirus
d. Ebola virus
6.3 What are scouring rushes and why are they named as such?
(2)
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6.4
Distinguish between the three mechanisms by which bacteria can transfer DNA from
one bacterial cell to another.
(3)
6.5
Describe three similarities between modern green algae and plants.
(3)
6.6
What kinds of meristems are found in monocots and dicots, and where are they
located?
(4)
QUESTION 7:
Longer questions
[24]
7.1
Describe the principal modes by which prokaryotes carry on nutrition and energy
capture.
(4)
7.2
Describe the general characteristics of the three groups of slime mold?
(6)
7.3
What are the dermal tissues and name the components and function of the dermal
tissue system?
(6)
7.4. What is called as germ layers and name their function?
(8)
QUESTION 8:
[10]
Structures and functions
Use the diagram to answer the questions below;
8.1
Identify the protist shown in the diagram, and tell whether it is animal-like,
fungus-like, or plant-like.
(1)
8.2
The figure above shows a diagram of an organism. Is it a unicellular or a multicellular
organism and state whether it is a heterotroph, an autotroph, or both?
(1)
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8.3
Identify the structures labeled B and D in the diagram and describe their functions. (2)
8.4 If the structure labelled B in the above figure were to malfunction, what effect would
this likely have on the organism?
(1)
8.5
Identify the structures labeled A and C in the diagram.
(1)
8.6 | What is the fundamental difference between protozoans and algae?
(2)
8.7
In what form does the brown algae store its food and mention what the cell wall
Composition is made off?
(2)
QUESTION 9:
Essay questions
[30]
9.1
Describe the different types of epithelial tissues in terms of specific characteristics
and functions.
(15)
9.2 Describe the five phyla of the kingdom fungi.
(15)
THE END