NCERT Class-9 Science Solutions: Chapter 5-The Fundamental Unit of Life Part 1 (For CBSE, ICSE, IAS, NET, NRA 2023)
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Multiple Choice Questions
Question 1:
Which of the following can be made into crystal?
- A Bacterium
- An Amoeba
- A Virus
- A Sperm
Answer: C
Question 2:
A cell will swell up if
- The concentration of water molecules in the cell is higher than the concentration of water molecules in surrounding medium
- The concentration of water molecules in surrounding medium is higher than water molecules concentration in the cell
- The concentration of water molecules is same in the cell and in the surrounding medium
- Concentration of water molecules does not matter
Answer: B
Question 3:
Chromosomes are made up of
- DNA
- Protein
- DNA and protein
- RNA
Answer: C
Question 4:
Which of these options are not a function of Ribosomes?
- It helps in manufacture of protein molecules
- It helps in manufacture of enzymes
- It helps in manufacture of hormones
- It helps in manufacture of starch molecules
- (i) and (ii)
- (ii) and (iii)
- (iii) and (iv)
- (iv) and (i)
Answer: C
Question 5:
Which of these is not related to endoplasmic reticulum?
- It behaves as transport channel for proteins between nucleus and cytoplasm
- It transports materials between various regions in cytoplasm
- It can be the site of energy generation
- It can be the site for some biochemical activities of the cell
Answer: C
Question 6:
Following are a few definitions of osmosis
Read carefully and select the correct definition
- Movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane
- Movement of solvent molecules from its higher concentration to lower concentration
- Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane
- Movement of solute molecules from lower concentration to higher concentration of solution through a semipermeable membrane
Answer: A