Question 1. How many chromosomes are there in humans?
Question 2. The number of chromosomes pairs, found in the cells of human body is______.
Question 3. Which organelle in the cell, other than the nucleus, contains DNA?
(C) Golgi apparatus
Question 4. Which one of the following statements is correct?
(A) Rickettsias lack cell wall
(B) Viroids consist of single stranded RNA molecules
(C) The cell wall of Mycoplasmas is made up of amino sugars
(D) Prions are the smallest free living cells
Question 5. The reason of large-scale diversity among the organisms is_____.
Question 6. Which of the following does not have sex-chromosome?
Question 7. How does the plant cell differ from the animal cell?
(A) Cell nucleus
(B) Presence of protoplasm
(C) Cell wall
Question 8. What is not found in the animal cell?
(A) Cell wall of cellulose
(C) Entire cell
(D) None of the above
Question 9. One term that generates the maximum number of ATP atoms in our system?
(A) Water decomposition
(B) Last respiratory series
(C) Kreb’s cycle
(D) Decomposition of glucose
Question 10. Which of the following organelle is called ‘Power House’ of the cell?
(B) Cell membrane
Question 11. Corpus luteum is a mass of cells found in_____.
Question 12. Plasma membrane is built up of______.
(A) Both (C) and (D)
Question 13. Which of the following cell organelles play the most significant role in protein synthesis?
(A) Lysosome and Mitochondria
(B) Golgi apparatus and Mitochondria
(C) Endoplasmic reticulum and Ribosome
(D) Lysosome and Centrosome
Question 14. Lymphocytes cells are formed in which part of human body?
(C) Long bone
Question 15. The cellular and molecular control of programmed cells death are known as_____.
Question 16. Which one of the following statements is not true with regard to the transplantation of stem cells in animals?
(A) They are found only in the embryo
(B) They have the capacity to produce one or more types of specialized cells
(C) They repair the damaged tissues of the organs
(D) They multiply themselves throughout the life span of an animal
Question 17. With reference to the latest developments in stem cell research, consider the following statement.
- The only source of human stem cells are the embryos at the blastocyst stage.
- The stem cells can be derived without causing destruction to blastocysts.
- The stem cells can regenerate themselves in vitro virtually forever.
- Indian research centres also created a few cell lines which can be developed into many types of tissues.
Which of these statements are correct?
(A) 3 and 4
(B) 1, 3 and 4
(C) 1, 2 and 3
(D) 1, 2, 3 and 4