Short-answer type questions :
1. What are the functions of a cell membrane?
2. How is a bacterial cell different from human cell?
3. What is chromosome and its functions?
Answers
Answer:
ANS - 1 - The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.
ANS - 2 - HUMAN CELL IS A EUKARYOTIC CELL WHERE AS THAT OF A BACTERIA IS A PROKARYOTIC CELL. THE BACTERIAL CELL HAS A CELL WALL TOO. THEIR DNA IS FREE FLOATING IN THE CYTOPLASM.
ANS - 3 - Chromosomes are thread-like structures present in the nucleus, which carries genetic information from one generation to another. They play a vital role in cell division, heredity, variation, mutation, repair and regeneration.
Answer:
1)The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products
2)HUMAN CELL IS A EUKARYOTIC CELL WHERE AS THAT OF A BACTERIA IS A PROKARYOTIC CELL. THE BACTERIAL CELL HAS A CELL WALL TOO. THEIR DNA IS FREE FLOATING IN THE CYTOPLASM.
3)Bacterial chromosomes consist of large DNA molecules, RNA transcripts attached to DNA by RNA polymerase, and assorted proteins that duplicate DNA, repair DNA damage, and control patterns of gene expression