Viruses need a host because a host is just like the owner of the virus "business". think of it as a company. the company has a boss- aka the person who made the company (this is the host) and the boss also tells the employees (bacteria etc) what to do and how to do it. without the host, the virus will die. :)
<span>the record of descent of an animal, showing it to be purebred.</span>
Answer: <u>Turgor pressure</u>
Explanation: Under normal condition, leaves of the plants are upright and rigid because of the turgor pressure. It is the pressure which is exerted by water inside the cell, towards the cell wall. This gives the leaf, a rigid structure. But when there is dehydration, this pressure decreases and the leaves loose their shape and wilt. There is absence of pressure from inner side of the cell wall.
Answer:
The surface area to volume ratio (SA:V) limits cell size because the bigger the cell gets, the less surface area it has for its size.
Explanation:
This is important if you are a cell that depends on diffusion through your cell wall to obtain oxygen, water, and food and get rid of carbon dioxide and waste materials.
Answer:
A shared character is one that two lineages have in common, and a derived character is one that evolved in the lineage leading up to a clade and that sets members of that clade apart from other individuals.
