All Free Biology MCQs with Answers
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19844 questions · page 674 of 1985
6731. A function that is not related to smooth endoplasmic reticulum:
- A. Calcium storage
- B. Enzyme synthesis
- C. Steroid synthesis
- D. Mechanical support
Explanation: Calcium storage and steroid synthesis is the function of SER, while enzyme synthesis is the function of RER, Mechanical support is, however, related to both SER and RER.
Correct answer: Enzyme synthesis6732. Which one of the following cell structure is involved in the synthesis of lipids?
- A. Endoplasmic reticulum
- B. Centriole
- C. Golgi complex
- D. Mitochondria
Explanation: Mitochondria are responsible for fatty acid metabolism while lipid synthesis takes place in SER.
Correct answer: Endoplasmic reticulum6733. Nuclear membrane is continuous with:
- A. E.R
- B. Lysosome
- C. Golgi Body
- D. Peroxisome
Explanation: ER is the continuation of the the nuclear membrane.
Correct answer: E.R6734. Lipid synthesis or lipid metabolism is the function of:
- A. Smooth endoplasmic reticulum
- B. Mitochondria
- C. Rough endoplasmic reticulum
- D. Golgi complex
Explanation: SER is responsible for lipid metabolism, detoxification, nerve impulse conduction and transport of material in the cell.
Correct answer: Smooth endoplasmic reticulum6735. Select the one which is not a function of smooth endoplasmic reticulum (SER).
- A. Metabolism of lipids
- B. Transport of materials
- C. Transmission of impulses
- D. Processing of glycoproteins
Explanation: The processing of thr glycoprotein is carried out by the golgi complex. Secretory proteins are synthesized on RER, then transferred to Golgi apparatus through SER for final processing and packaging and finally released as secretory vesicles.
Correct answer: Processing of glycoproteins6736. Which of the following is not a product of ER in animal cells?
- A. Lysozymes
- B. ATP synthase
- C. Progesterone
- D. Na channels
Explanation: ATP synthases are present in cristae (mitochondria).They are encoded by mitochondrial DNA.
Correct answer: ATP synthase6737. The cisternae break up into vesicles from_and_of Golgi complex.
- A. Convex, forming face
- B. Convex, maturing face
- C. Concave, forming face
- D. Concave, maturing face
Explanation: Maturing, concave and inner (trans) face of the Golgi complex is the site from where Golgi vesicles after processing are budded off.
Correct answer: Concave, maturing face6738. Which of the following organelles are involved in the synthesis of plant cell wall?
- A. Endoplasmic reticulum
- B. Lysosomes
- C. Peroxisome
- D. Golgi Body
Explanation: The vesicles formed from Golgi complex secrete plant cell wall. The Golgi and plasma membranes are the two main sites where constituents of cell wall are synthesized.
Correct answer: Golgi Body6739. Which of the following does not originate from Golgi complex?
- A. Lysosome
- B. Glyoxysome
- C. Peroxisome
- D. All originate from Golgi complex
Explanation: Certain organelles, such as lysosomes, peroxisomes and glyoxysomes also originate from Golgi complex.
Correct answer: All originate from Golgi complex6740. Phragmoplast is associated with:
- A. ER
- B. Golgi complex
- C. Mitochondria
- D. Chloroplast
Explanation: In plant cells during cell division, the Golgi complex also gives rise to vesicles which contain cell wall synthesizing materials. At cytokinesis, these Golgi vesicles are arranged on the cell equator, fuse together and form a structure, called phragmoplast. Later on, a new cell wall is derived from this structure.
Correct answer: Golgi complex