AQA A level Exchange & Transport revision

Front

A high SA:V ratio enables a high...

Back

Metabolic rate

Front

What method is used to study the effect of surface area to volume ratio on diffusion?

Back

Using different size agar blocks containing indicator

Front

Which organism uses its body surface for gas exchange?

Back

Single-celled organism

Front

What is the role of the alveoli in the human gas exchange system?

Back

Surface over which gas exchange takes place

Front

What equation is used to calculate pulmonary ventilation rate?

Back

PVR = tidal volume × breathing rate

Front

What is digested by amylases in mammals?

Back

Carbohydrates

Front

What mechanisms are involved in the absorption of amino acids in the ileum?

Back

active transport, co-transport and diffusion

Front

What theory explains water transport in the xylem of plants?

Back

Cohesion-tension theory

Front

What transports organic substances in plants?

Back

Phloem

Front

What is the role of haemoglobin in animals?

Back

Transport of oxygen