Biomolecules — BIOLOGY STD 11 Science — Question

Define and understand the following terms:
Phylum

We commonly call ATP as the energy currency of the cell, why? Can you think of some other energy carriers present in a cell? Give name any two.

How many action potentials can be generated by the SA node in a minute?

Angiosperms have been differentiated into which two classes?

What is the name given to the infoldings of plasmalemma in prokaryotic cell below the wall?

Differentiate between complete and incomplete digestive systems.

Name two functions of collenchyma.

Sort the following into actively or passively transported substances during reabsorption of GFR. Glucose, aminoacids, nitrogenous wastes, Na⁺, water.

Name the leucocytes involved in:

1. Immune response.
2. Allergic reactions.