plzz answer me this fast (coz urgent):- ( 20 points)
Q1 Write the main function of leucoplast.
Q2 What is the function of SER in liver cells of vertebrates?
Q3 Why the RER appears rough?
Q4 Why viruses are not supposed to be living?
Q5 What is a nucleoid?
Q6 Why dry raisins placed in water swell up?
Q7 In which part of a plant chromoplasts are found?
Q8 Where are genes located?
Q9 What will happen if we keep a plant cell or animal cell in a i) Hypotonic solution ii) Hypertonic solution iii) Isotonic solution.
Q10 Explain the importance of osmosis for living beings?
Q11 Give the historical development of cell theory.
Q12 Who coined the term “cell “ and how?
Q13 Write the contribution of (a) Robert Hooke, (b) Leeuwenhoek (c) Robert Brown
Q14 Draw a large diagram of an animal cell as seen through aan electron microscope. Label the parts that carry on the function of Respiration, secretion, protein synthesis, transport of material.
Q15 Which substance is responsible for transfer of characters from one generation to another?
(short answers plzz)
Answers
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1 ) store starch
2) detoxify drugs and poison in vertebrates
3) because it has ribosomes on its surface
4) because they do show no characteristics of living being they when enter human body use cell machinery to multiply
5) prokaryotic cells don't have a defined nuclear region instead they have nucleic acid called nucleoid
6) because of endo osmosis
7) plastids
8) genes are functional segments of DNA located in nucleas
9) in hypotonic solution cell will gain water and will swell up in hypertonic solution cell will lose water and will shrink in isotonic medium no change will occur
10) it helps in exchange of various liquid medium
12) Robert hooke in 1665 he observed honey comb like structures with the help of his self designed microscope
13) Robert hooke written above
AV leeuwenhoek observed living cells Robert brown observed cells of pollen grains
15) genes
2) detoxify drugs and poison in vertebrates
3) because it has ribosomes on its surface
4) because they do show no characteristics of living being they when enter human body use cell machinery to multiply
5) prokaryotic cells don't have a defined nuclear region instead they have nucleic acid called nucleoid
6) because of endo osmosis
7) plastids
8) genes are functional segments of DNA located in nucleas
9) in hypotonic solution cell will gain water and will swell up in hypertonic solution cell will lose water and will shrink in isotonic medium no change will occur
10) it helps in exchange of various liquid medium
12) Robert hooke in 1665 he observed honey comb like structures with the help of his self designed microscope
13) Robert hooke written above
AV leeuwenhoek observed living cells Robert brown observed cells of pollen grains
15) genes
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