Cellulose is the major component of cell walls of
(1) Pythium
(2) Xanthomonas
(3) Pseudomonas
(4) Saccharomyces
Which of the following components provides sticky character to the bacterial cell?
(1) Cell wall
(2) Nuclear membrane
(3) Plasma membrane
(4) Glycocalyx
Read the following statement regarding bacteria.
I. Bacteria exchnage their genetic matter through conjugation which involve cell to cell contact.
II. Transduction in 'Salmonella is reported by Tatum and Lederberg in 1952.
III. Citrus canker disease is caused by bacteria Xanthomonas citri.
IV. Hans Christian gram's staining method is based on cell wall composition of bacteria.
Choose the correct option with true statements.
(1) I and III
(2) I, III and IV
(3) I, II, and III
(4) II and IV
If any organism has non cellulosic cell wall where can it be placed according to whittaker's system of classification?
(1) Monera
(2) Protista
(3) Fungi
(4) Both (1) and (3)
The organism in which cell wall is found and made up of Polysaccharides and amino acid will be grouped under
1. Monera
2. Protista
3. Fungi
4. Animalia
Pick up the wrong statement:
1. Protista have photosynthetic and heterotrophic modes of nutrition
2. Some fungi are edible
3. Nuclear membrane is present in Monera
4. Cell wall is absent in Animalia
R: The outer face of the outer membrance of Grain-negative bacteria contains lipopolysaccharides, a part of which is integrated into the membrance lipids.
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
3. If Assertion is true statement but Reason is false, then mark (3)
4. If both Assertion and Reason are false statements, then mark (4)
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
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