Science (English Medium) इयत्ता ११ - CBSE Question Bank Solutions for Biology

Describe the enzymatic action on fats in the duodenum.

A person had roti and dal for his lunch. Trace the changes in those during its passage through the alimentary canal.

A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in is ______.

From the following relationships between respiratory volume and capacities and mark the correct answer.

1. Inspiratory capacity (IC) = Tidal Volume + Residual Volume
2. Vital Capacity (VC) = Tidal Volume (TV) + Inspiratory Reserve Volume (IRV) + Expiratory Reserve Volume (ERV).
3. Residual Volume (RV) = Vital Capacity (VC) – Inspiratory Reserve Volume (IRV)
4. Tidal Volume (TV) = Inspiratory Capacity (IC) – Inspiratory Reserve Volume (IRV)

Define the following terms?

Tidal volume

Define the following terms?

Residual volume

Arrange the following terms based on their volumes in an ascending order.

1. Tidal Volume (TV)
2. Residual Volume (RV)
3. Inspiratory Reserve Volume (IRV)
4. Expiratory Capacity (EC)

Complete the missing terms

Inspiratory Capacity (IC) = ______ + IRV

Complete the missing terms

______ = TV + ERV

Complete the missing terms

Functional Residual Capacity (FRC) = ERV + ______.

Name the important parts involved in creating a pressure gradient between lungs and the atmosphere during normal respiration.

Differentiate between inspiratory and expiratory reserve volume

Name two actively transported substances in Glomerular filtrate.

Label the parts in the following diagram.

Afferent arteriole Efferent arteriole Bowman’s capsule Glomerulus

Explain the mechanism of formation of concentrated urine in mammals.

Describe the structure of a human kidney with the help of a labelled diagram.

ATPase of the muscle is located in ______.

Label the different components of actin filament in the diagram given below.

An area in the brain which is associated with strong emotions is ______.

Name the structures involved in the protection of the brain.