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Q 1/10
Score 0
1. Item 1 refers to the following structures found in cells.
I. Cell wall II. Cell Membrane III. Centrioles IV. Golgi Apparatus Which of the following combinations are features common to BOTH plant and animal cells? A. I and II B. II and IV C. II, III and IV D. II and III
30
C
Q 2/10
Score 0
2. All of the following are characteristics are typical of prokaryotic cells EXCEPT
A. they contain both ribosomes and a nucleus B. their average diameter ranges between 0.5-10um C. they have circular DNA
D. they are mainly unicellular
30
C
10 questions
Q.
1. Item 1 refers to the following structures found in cells.
I. Cell wall II. Cell Membrane III. Centrioles IV. Golgi Apparatus Which of the following combinations are features common to BOTH plant and animal cells? A. I and II B. II and IV C. II, III and IV D. II and III
1
30 sec
Q.
2. All of the following are characteristics are typical of prokaryotic cells EXCEPT
A. they contain both ribosomes and a nucleus B. their average diameter ranges between 0.5-10um C. they have circular DNA
D. they are mainly unicellular
2
30 sec
Q.
3. Xylem can MOST accurately be described as a tissue because it
A. consists of more than one type of cell
B. consists of vessels conducting mainly water and mineral salts C. is impregnated with lignin
D. provides mechanical support for plants
3
20 sec
Q.
Item 4 refers to the diagram which shows the structure of a generalised plant cell. Which of the following options correctly indicates the organelles that contain DNA?
A. 1,2,3
B. 2,3, 5
C. 2, 4, 6
D. 3, 5, 6
4
30 sec
Q.
5. Which of the following are characteristics of prokaryotic cells? I. DNA is not associated with the histone protein
II. Ribosomes are small (70 S type)
III. Cellulose cell wall present IV. Cells are typically 5-10 um in size
A. I and II only
B. III and IV only C. I, II and IV only
D. I, II, III and IV
5
45 sec
Q.
6. Which of the following correctly describes the importance of cholesterol in a cell membrane? A. It interacts with fatty acid tails to exclude water
B. It forms channels in the membrane facilitating entry and exit of polar molecules C. It has branching carbohydrate chains which act as identifying markers
D. It enhances the flexibility and the mechanical stability of the membrane
6
45 sec
Q.
The actual diameter of the stem is 10 mm. What is the magnification of the drawing?
A. 5
B. 10
C. 100
D. 500
7
30 sec
Q.
Which of the following structures, present in this cell, would NOT be seen in a bacterial cell? A. ribosomes B. Cytoplasm C. Cell membrane D. Nuclear membrane
8
30 sec
Q.
The diagram above shows a transverse section of a plant structure.
A. a cell B. a tissue C. an organ D. a system
9
30 sec
Q.
10. According to the endosymbiotic theory, organelles such as chloroplasts and mitochondria may have evolved from prokaryotic organisms. Which of the following is NOT a line of evidence in support of this theory?
A. Many bacteria are similar in structure to eukaryotic nuclei
B. Chloroplasts and mitochondria both contain DNA.
C. The average diameter of a chloroplast or mitochondrion is similar to that of a bacterium. D. Photosynthetic bacteria have their pigments located in membranes similar to chloroplasts.
