10th Bio cdf

Respiration commonly involves the use of ________ to break down carbohydrates and other organic molecules.

• Carbon dioxide

• Nitrogen

• Oxygen

• Hydrogen

Aerobic respiration occurs in the___________

• Absence of oxygen

• Presence of carbon dioxide

• Absence of nitrogen

• Presence of oxygen

During night time ,in plants, _______ process takes place

• Photosynthesis

• Respiration

• Translocation

• Transpiration

__________ animals breathe faster

• Terrestial

• Aerial

• Aquatic

• Amphibian

The path of air in human respiratory system

• External nostrils >nasal cavity >bronchi>bronchioles >alveoli

• External nostrils>trachea>bronchi>alveoli

• External nostrils>nasal cavity>bronchioles> alveoli

• External nostrils>nasal cavity>trachea>bronchi>bronchioles>alveoli

External respiration occurs in _______

• Metabolizing tissues

• Alveoli

• Lungs

• Alveoli

Diffusion can take place in

• Humans

• Amoeba

• Complex organisms

• Insects

Respiratory pigment in humans

• Chlorophyll

• Plasma

• Haemoglobin

• WBC

Oxygenated blood enters the left atrium through the ____

• Artery

• Vein

• Pulmonary artery

• Pulmonary vein

Blood enters the left ventricle through _______ valve

• Aortic

• Pulmonary

• Tricuspid

• Mitral