Plasma Membrane and Cell Wall

Q. Rahul prepared a wine from grapes and vinegar from apple by using the same microorganism. Which microorganism did Rahul use for making both?

1. Paramecium
2. Algae
3. Amoeba
4. Yeast

Q. Choose the option that correctly depicts the biological levels of organization.

1. Cell $\to$ Tissue $\to$ Organ $\to$ Organism $\to$ Organ system
2. Organ $\to$ Tissue $\to$ Cell $\to$ Organism $\to$ Organ system
3. Cell $\to$ Tissue $\to$ Organ $\to$ Organ system $\to$ Organism
4. Tissue $\to$ Cell $\to$ Organ $\to$ Organ system $\to$ Organism

Q.

What is a semipermeable membrane?

Q. In addition to the cell membrane, there is an outer thick layer in cells of plants which is known as _________.

1. cell wall
2. nuclear wall
3. nuclear membrane
4. cytoplasm

Q. The cell membrane is in nature.

1. impermeable
2. semi-permeable
3. rigid

Q. Which statement is true about WBC?

1. Non-nucleated
2. Deficiency causes leukaemia
3. Can squeeze through blood capillaries
   
4. None of the above