Chapter 3 1. What is the difference between peroxisomes and lysosomes? 2. What i
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Chapter 3 1. What is the difference between peroxisomes and lysosomes? 2. What is the function of the endoplasmic reticulum and what is the difference between smooth ER and rough ER? 3. 4, 5. What are the two major classes of nucleic acids? The structural unit of nucleic acids are List the 3 components nucleotides are composed of List the 5 types of nucleotides and match up the base pairs. Identify which are found in DNA and RNA 6. 7. Where is DNA located in the cell? 8. Where is RNA chiefly located in the cell? 9. The curency of the cell s 10. Define a gene. Page 94 11. True or False. Channel-mediated facilitated diffusion requires ATIP 12. True or False. A cell would crenate in a hypotonic solution. 13. True or False. mRNA, tRNA, & rRNA are all involved in protein synthesis. 14. True or False. The cleavage furrow is formed during cytokinesis.Explanation / Answer
Question
Lysosomes are the recycle bin of cell they are called as suicide bag of cell, lysosomal enzymes can hydrolyse every type of biological macromolecules they are called as cell digestive organelles.
While the peroxisomes are concerned with three main function -
Peroxisomes help in oxidation of very long chain fatty acids and they also synthesise plasmalogens for the myeline sheath formation in brain.
They help in generation and degradation of hydrogen peroxide with the help of enzyme catalase. Also they help in the detoxification of the harmful chemical with the help of superoxide dismutase catalase and peroxidases.
Q 2 endoplasmic reticulum are the synthesis machinery of the cell they help in synthesis of the lipids and proteins.
Rough endoplasmic reticulum are granular endoplasmic reticulum they have ribosome on their surface they help in the synthesis of protein, process called as translation.
Smooth endoplasmic reticulum are agranular endoplasmic reticulum help in synthesis of the lipids they help in the synthesis of steroid hormone also contain calcium in the muscles in the sarcoplasmic reticulum they also contain cytochrome p450 which help in detoxification of drug.
Q 3 to major classes of nucleic acid are RNA and DNA
RNA contain ribonucleic acid with ribose sugar while DNA contains deoxyribonucleic acid with deoxyribose sugar. RNA help in protein synthesis, wild DNA help in genetic transmission of information from one generation to other.
Q 4 structural unit of the nucleic acid is the nucleotides.
Q5 nucleotides are made up of mainly 3 structural components initially nitrogen base like adenine bind with sugar to form nucleoside which bind with phosphate to form nucleotides.
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