Read the passage given below and answer the following questions from (i) to (v).
Traditionally the process of respiration is divided into three phases:
(1) ventilation of the gas exchange organs better known as breathing, (2) transport of respiratory gases and, (3) cellular respiration.We assimilate chemical energy from the environment and transfer it from molecule to molecule in a stepwise fashion within our cells. Although studied separately, these phases represent a continuum and processes of cellular respiration in all life forms is mostly common.
(i) The energy released during cellular respiration is immediately used to synthesise a molecule called _______ which is used to fuel all other activities in the cell.
ATP
GTP
AGP
APP
(1)
Read the passage given below and answer the following questions from (i) to (v).
Traditionally the process of respiration is divided into three phases:
(1) ventilation of the gas exchange organs better known as breathing, (2) transport of respiratory gases and, (3) cellular respiration.We assimilate chemical energy from the environment and transfer it from molecule to molecule in a stepwise fashion within our cells. Although studied separately, these phases represent a continuum and processes of cellular respiration in all life forms is mostly common.
(ii) The ultimate breakdown products of glucose in our body are:
carbon dioxide and water
carbon dioxide, water, and energy
energy and water
oxygen, water, and energy
(2)
Read the passage given below and answer the following questions from (i) to (v).
Traditionally the process of respiration is divided into three phases:
(1) ventilation of the gas exchange organs better known as breathing, (2) transport of respiratory gases and, (3) cellular respiration.We assimilate chemical energy from the environment and transfer it from molecule to molecule in a stepwise fashion within our cells. Although studied separately, these phases represent a continuum and processes of cellular respiration in all life forms is mostly common.
(iii) Which one of the following statements is not true?
The release of energy in this aerobic process is a lot greater than in the anaerobic process
Build-up of lactic acid in our muscles during sudden activity causes cramps.
Fermentation is a type of aerobic respiration.
Breakdown of pyruvate using oxygen takes place in the mitochondria.
(3)
Read the passage given below and answer the following questions from (i) to (v).
Traditionally the process of respiration is divided into three phases:
(1) ventilation of the gas exchange organs better known as breathing, (2) transport of respiratory gases and, (3) cellular respiration.We assimilate chemical energy from the environment and transfer it from molecule to molecule in a stepwise fashion within our cells. Although studied separately, these phases represent a continuum and processes of cellular respiration in all life forms is mostly common.
(iv) Air passages within the lungs terminate in structures called:
bronchiole
bronchi
alveoli
ribs
(3)
Read the passage given below and answer the following questions from (i) to (v).
Traditionally the process of respiration is divided into three phases:
(1) ventilation of the gas exchange organs better known as breathing, (2) transport of respiratory gases and, (3) cellular respiration.We assimilate chemical energy from the environment and transfer it from molecule to molecule in a stepwise fashion within our cells. Although studied separately, these phases represent a continuum and processes of cellular respiration in all life forms is mostly common.
(v) What is the function of rings of cartilage present in our throat?
They ensure smooth flow of food
They avoid collapse of air passage
Function is unknown in humans
They join our lungs with ribs
(2)
Read the passage given below and answer the following questions from (i) to (v).
A normal human heart is a strong, hard-working pump made of muscle tissues. It is about the size of a person’s fist. The heart comprises four chambers. The upper two chambers are known as atria, and the lower two are known as ventricles. These chambers are separated by a wall of tissue known as the septum. Blood is pumped through the chambers, assisted by four heart valves. The valves open and close to allow blood flow in only one direction.
(i) Blood that is brought back to the heart is rich in:
oxygen
carbon dioxide
both (a) and (b)
carbon monoxide
(2)
Read the passage given below and answer the following questions from (i) to (v).
A normal human heart is a strong, hard-working pump made of muscle tissues. It is about the size of a person’s fist. The heart comprises four chambers. The upper two chambers are known as atria, and the lower two are known as ventricles. These chambers are separated by a wall of tissue known as the septum. Blood is pumped through the chambers, assisted by four heart valves. The valves open and close to allow blood flow in only one direction.
(ii) Which one of the two, atria or ventricles, has thicker muscular walls?
Atria
Septum
Ventricles
Both atria or ventricles have similar thickness of walls
(3)
Read the passage given below and answer the following questions from (i) to (v).
A normal human heart is a strong, hard-working pump made of muscle tissues. It is about the size of a person’s fist. The heart comprises four chambers. The upper two chambers are known as atria, and the lower two are known as ventricles. These chambers are separated by a wall of tissue known as the septum. Blood is pumped through the chambers, assisted by four heart valves. The valves open and close to allow blood flow in only one direction.
(iii) Blood is pumped out to the body when:
left ventricle expands
left atrium relaxes
left atrium contracts
left ventricle contracts
(4)
Read the passage given below and answer the following questions from (i) to (v).
A normal human heart is a strong, hard-working pump made of muscle tissues. It is about the size of a person’s fist. The heart comprises four chambers. The upper two chambers are known as atria, and the lower two are known as ventricles. These chambers are separated by a wall of tissue known as the septum. Blood is pumped through the chambers, assisted by four heart valves. The valves open and close to allow blood flow in only one direction.
(iv) Which one of the statements given below is not true?
Valves ensure that blood does not flow backwards when the atria or ventricles contract.
Amphibians or many reptiles have three chambered hearts, but they do not tolerate mixing of the oxygenated and de-oxygenated blood streams.
Vertebrates have double circulation procedure.
De-oxygenated blood comes from the body to the upper chamber on the right.
(2)
Read the passage given below and answer the following questions from (i) to (v).
A normal human heart is a strong, hard-working pump made of muscle tissues. It is about the size of a person’s fist. The heart comprises four chambers. The upper two chambers are known as atria, and the lower two are known as ventricles. These chambers are separated by a wall of tissue known as the septum. Blood is pumped through the chambers, assisted by four heart valves. The valves open and close to allow blood flow in only one direction.
(v) The force that blood exerts against the wall of a vessel is called:
ventricular pressure
blood pressure
atrial pressure
septal pressure
(2)
