bio respiratory

What is aerobic respiration?

Aerobic respiration is the process of producing cellular energy in the presence of oxygen.

What is anaerobic respiration?

Anaerobic respiration is the process of producing energy without oxygen.

What are the main products of aerobic respiration?

The main products are carbon dioxide, water, and ATP (adenosine triphosphate).

What are the main products of anaerobic respiration in yeast?

The main products are ethanol, carbon dioxide, and a small amount of ATP.

Where does aerobic respiration take place in eukaryotic cells?

Aerobic respiration occurs in the mitochondria of eukaryotic cells.

Where does anaerobic respiration occur?

Anaerobic respiration occurs in the cytoplasm of cells.

What is one main difference in energy yield between aerobic and anaerobic respiration?

Aerobic respiration yields significantly more ATP (about 36-38) compared to anaerobic respiration (about 2 ATP).

What type of organisms typically perform anaerobic respiration?

Anaerobic respiration is performed by some bacteria, yeast, and muscle cells when oxygen is scarce.

What is the role of oxygen in aerobic respiration?

Oxygen acts as the final electron acceptor in the electron transport chain during aerobic respiration.

What is lactic acid fermentation?

Lactic acid fermentation is a type of anaerobic respiration occurring in muscle cells, producing lactic acid and energy.

What is the word equation for aerobic respiration?

Glucose + Oxygen → Carbon Dioxide + Water + Energy (ATP)

Anaerobic Respiration word equation

Glucose → Ethanol + Carbon Dioxide + Energy (ATP) or Glucose → Lactic Acid + Energy (ATP) (in animals).

What is the word equation for respiration in yeast?

Glucose → Ethanol + Carbon Dioxide + Energy (ATP)

Balanced symbol equation of aerobic respiration

C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + 36-38 ATP

What is gaseous exchange?

Movement of oxygen and carbon dioxide between the air and the blood. Oxygen diffuses through the wall of the alveolus into the blood and carbon dioxide diffuses in the opposite direction.

What makes gas exchange so efficient?

Large surface area, moisture,diffusion gradient.

In a model lung, what does the “rubber sheet” resemble?

The diagram

What model is used to show the rib cage in a model lung?

The bell jar

What effect on the volume of space inside the bell jar and the air pressure, does the rubber sheet being pulled downwards have?

Volume of space increases and the air pressure in the jar is reduced. To balance this pressure, air is drawn through glass tubing and inflates the balloons.

What structure is not prevented in a model lung?

intercostal muscles

What happens to the diaphragm during inhalation

Contracts and flattens

What happens to intercostal muscles during exhalation?

Relax

where does respiration take place?

in mitochondria

Why is glucose broken down?

to release energy used for movement growth reproduction and generating heat and also to carry out active transport

What is active transport ?

Movement of molecules from low to high concentration, requiring energy.