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

The ultimate electron acceptor of respiration in an aerobic organisms is ______.

Match the following and choose the correct option from those given below.

The end product of oxidative phosphorylation is ______.

Oxygen is an essential requirement for aerobic respiration but it enters the respiratory process at the end? Discuss.

Respiration is an energy releasing and enzymatically controlled catabolic process which involves a step-wise oxidative breakdown of organic substances inside living cells.

In this statement about respiration explain the meaning of 1) Step-wise oxidative breakdown, and 2) Organic substances (used as substrates).

Given below is a diagram showing ATP synthesis during aerobic respiration, replace the symbols A, B, C, D and E by appropriate terms given in the box.

F1, Particle, Pi, 2H⁺, Inner mitochondrial membrane, ATP, Fo particle, ADP

Oxygen is critical for aerobic respiration. Explain its role with respect to ETS.

Fill in the places with appropriate word/words.

Apical dominance as expressed in dicotyledonous plants is due to the presence of more ______ in the apical bud than in the lateral ones.

A farmer grows cucumber plants in his field. He wants to increase the number of female flowers in them. Which plant growth regulator can be applied to achieve this?

Where are the following hormones synthesized in plants?

IAA

Where are the following hormones synthesized in plants?

Gibberellins

Where are the following hormones synthesized in plants?

Cytokinins

Respiratory process is regulated by certain specialized centres in the brain. One of the following centres can reduce the inspiratory duration upon stimulation.

Explain the role of neural system in regulation of respiration.

ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.

Which of the following correctly explains a phase/ event in cardiac cycle in a standard electrocardiogram?

Complete the missing word in the statement given below:

One can determine the heart beat rate by counting the number of ______ in an ECG.

Given below is the diagrammatic representation of a standard ECG. Label its different peaks.

How will you interpret an electrocardiogram (ECG) in which time taken in QRS complex is higher.

The condition of accumulation of urea in the blood is termed as ______.