Answer:
Diffusion, osmosis and active transport are three similar chemical methods by which single molecules or very small structures are moved across membranes or relatively short distances, often within or between cells.
Explanation:
The movement of substances in and out of cells is a very important part of biology as without it no cell and so no organism could live very long. Substances can only cross the protective cell membrane by diffusion, osmosis or active transport. Mass flow only works at the organ, tissue and whole organism level.
Adaptation is a response to the environment but long term.
For example:
<span>A wolf has a fur coat as an adaptation to the cold weather, but birds migrating south is a response to cold weather.</span>
A system or community would be my guess
Answer:
In early pregnancy, the blastocyst stage continues for about 5 days before the embryo implants in the uterus, or womb. At this stage, stem cells begin to differentiate.
Explanation:
Answer:
tetanus toxoid.
Explanation:
Okay, things to note from the question above are: the medical student had four injections in or before she clocked 12 years of age.
The four injections given to the student when she was small should be FIVE instead of the four given for tetanus immunization and she should have been given a booster twice. Now, at 23 years old, is bitten by a mouse while performing an experiment. Sine she was not immunized against tetanus while she was young she should be given a tetanus toxoid.
Also, her wound should be closed since tetanus enters the body through a cut it say an open wound. The tetanus toxoid helps in the immunity against tetanus.
