Biology questions for exams

Biology questions for exams
Exam Questions Fully Solved - Biology
Biology Exams With Solutions

1. The main function of a plasma membrane is to
(a) prevent water from entering or leaving
(b) control what goes into and out of the cell
(c) act as a sieve, allowing only lipids to pass
(d) Move the cell from place to place
Ans. (b)


2. Who was the first to explain that cells divide and that all-new cells must come from preexisting cells?
(a) M. Schleiden
(b) T. Schwann
(c) Robert Hooke
(d) Rudolf Virchow
Ans. (d)

3. The first person to see a cell under the microscope was
(a) M. Schleiden
(b) T. Schwann
(c) Robert Hooke
(d) A.V. Leeuwenhoek
Ans. (c)


4. Prokaryotic cell is one, which does not have
(a) Proper nucleus
(b) Endoplasmic reticulum & mitochondria
(c) Proper nucleus and most of ce1organelles
(d) Cell wall
Ans. (c)


5. Which two organelles are thought to have originated from free-living prokaryotic cells?
(a) Mitochondria and ribosomes
(b) Chloroplast and nucleus
(c) Chloroplast and mitochondria
(d) Lysosomes and mitochondria
Ans. (c)


6. The cytoplasmic connections from cell to cell are known as
(a) Middle lamella
(b) Plasmodesmata
(c) Cell membrane system
(d) Endoplasmic reticulum
Ans. (b)


7. Ribosome was discovered by
(a) Porter
(b) Palade
(c) Muller
(d) Ochoa
Ans. (b)


8. Which one of the following does not have DNA?
(a) Nucleus
(b) Mitochondria
(c) Chloroplast
(d) Ribosomes
Ans. (d)


9. The smallest organelles in a cell are
(a) Lysosomes
(b) Spherosomes
(c) Peroxysomes
(d) Ribosomes
Ans. (d)


10. Endoplasmic reticulum was discovered by
(a) Porter and Kallmann
(b) Altmann
(c) Robertson
(d) Hofmeister
Ans. (a)


11. Proteins that are to be used outside the cell are synthesized
(a) in the mitochondria
(b) on the rough endoplasmic reticulum
(c) on the smooth endoplasmic reticulum
(d) on free ribosomes
Ans. (b)


12. Golgi apparatus is absent in
(a) Liver cells
(b) Higher plants
(c) Blue green algae
(d) Yeast
Ans. (c)


13. Which one of the following organelles is located near the nucleus contains a collection of flattened membrane bounded cisternae?
(a) Nucleolus
(b) Centriole
(c) Golgi apparatus
(d) Mitochondrion
Ans. (c)


14. What “buds off’ of the Golgi complex?
(a) Nuclei
(b) Cytoskeleton
(c) Ribosomes
(d) Vesicles
Ans. (d)


15. Major function of Golgi body is
(a) Secretion
(b) Regulation of cell temperature
(c) Active transport
(d) Transportation
Ans. (a)


16. Mitochondria were first observed by
(a) Robert Brown
(b) Altmann
(c) Robert Hooker
(d) T. Svedberg
Ans. (b)


17. The inner membrane of mitochondrion is usually highly convoluted forming a series of enfolding known as
(a) Thylakoids
(b) Grana
(c) Cristae
(d) Lamellae
Ans. (c)


18. The enzymes for Krebs cycle in mitochondria are located in
(a) In perimitochondrial space
(b) On inner membrane
(c) In mitochondrial matrix
(d) On the outer membrane
Ans. (c)


19. Cell organelle, which has electron transport system, is
(a) Centriole
(b) Endoplasmic reticulum
(c) Mitochondria
(d) Nucleolus
Ans. (c)


20. Mitochondria and chloroplast are believed to be bacterial endosymbionts of cells because
(a) Their membranes resemble those of bacteria
(b) They do not arise do novo
(c) They have their own nucleic acids
(d) They have all the above attributes
Ans. (d)


21. Autonomic genome system is present in
(a) Mitochondria and ribosomes
(b) Mitochondria and chloroplast
(c) Ribosomes and chloroplast
(d) Golgi body and mitochondria
Ans. (b)


22. Besides leucoplast, starch grain can develop in
(a) Mitochondria
(b) Chloroplast
(c) Lysosome
(d) Chromoplast
Ans. (b)


23. Green pigments capable of capturing the energy of sunlight are located within the
(a) Endoplasmic reticulum
(b) Chloroplasts
(c) Cell wall
(d) Ribosomes
Ans. (b)


24. The plastids that give fruits and flowers their orange and yellow colours are the
(a) Chromoplast
(b) Protoplasts
(c) Chloroplasts
(d) Leucoplasts
Ans. (a)


25. Lysosomes are known as “suicidal bags” because of
(a) Catalytic activity
(b) Hydrolytic activity
(c) Parasitic activity
(d) Saprophytic activity
Ans. (b)