b. streetcar system
c. cargo and mail transport
d. Interstate Highway System
the answer is d interstate highway system
b. mucous, urine, and kidneys
c. white blood cells and red blood cells
d. skin, neurons, muscle cells, and pancreas
Answer: a. skin, lymph nodes, white blood cells, and spleen
Explanation:
The human immune system involves various components and organs which protects the body against the disease causing organisms. Among the given options skin, lymph nodes, white blood cells, and spleen is the correct option. This is due to the following facts:
Skin: It forms the outer covering layer of the human body which prevents the entry of the pathogens inside the body.
Lymph nodes: The lymph nodes are the parts of the lymphatic system. It consists of lymphocytes which fights against disease causing pathogens.
White blood cells: The white blood cells are the cells of the immune system which also fights against invading pathogens.
Spleen: The spleen is the spongy soft organ of the human body. It is located in the upper left part of the abdomen. It filters blood as a part of the immune system. The old blood cells as well as the intruding microbes are degraded inside the spleen this way spleen provides the immunity to the body.
Answer:
I believe that the answer to this and your question is going to be: (A) skin, lymph nodes, white blood cells, and spleen.
Let me know if i got it right because it was right on my test.
partial diversity
low diversity
no diversity
facilitated diffusion
active transport
endocytosis and exocytosis
Answer: The correct answer for the blank is-
facilitated diffusion and
active transport.
Facilitated diffusion is a type of passive transport (transport of solute from high area of concentration to lower area of concentration) that requires transport protein ( which work as transporters or channels for the transport of solute).
Active transport also requires transport proteins/ carrier proteins (which work as pump) to drive the transport of solutes against the concentration gradient. This process utilizes energy (obtained from hydrolysis of ATP) for the transport because solute move from high concentration to an area where their concentration is less.
Answer:
The answer is Cells come only from pre-existing cells.
There are three tenets of cell theory:
1. All living organisms are composed of one or more cells.
2. Cells are the basic structural and functional units in all living organisms.
3. Cells come only from pre-existing cells.
In plants tissue cultures, single cells divide to produce roots, shoots, and leaves. This division suggests there must be some pre-existing cells from which those organs will be produced. So, the tenet that cells come from other cells in cell division is a basis for plant tissue cultures.
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Explanation: