Question

OCR AS Biology : unit 1 (f212) : cells, exchange, and transport​

Answer 1

Answer:

Now the terms provided are required to be explained as according to the standard given OCR (oxford, Cambridge , and RSA examination). So for that we have the following definitions as given below:

Explanation:

Cell- A cell is the basic unit of life and all organisms are composed of one or more cells. There are two fundamental types of cell: prokaryotic and eukaryotic.

Exchange-  The gas exchange system is responsible for the uptake of oxygen into the blood and the excretion of  carbon dioxide. Now exchange in organism  mostly occur in gaseous form.

Transport- They occur in Both plants and animals so,

Transport in an Animal body -As animals become larger, more complex and more active, transport systems become essential to supply  nutrients to, and remove waste from, individual cells.

Transport in Plants body- Transport systems  in plants move substances from where they are absorbed or produced to where they are stored or used. Plants do not have systems for transporting oxygen and carbon dioxide; instead these gases diffuse through air spaces within stems, roots and leaves.