Answer: Microbes in the hindgut of a termite break down cellulose into more easily digested sugars and short-chain fatty acids. These fatty acids are taken into the cells of the termite and used as nourishment in the same way human cells take in nutrients processed by our digestive system.
Explanation: I hope this helps
Answer:
This question lacks options, options are:
A.They maintain the cell’s shape.
B.They regulate cell processes.
C.They protect the body from infectious agents.
D.They signal the immune system to destroy pathogens.
E.They speed up biochemical reactions.
F.They send electrical signals.
The correct answers are C and D.
Explanation:
B cells and T cells use different biological weapons to attack the pathogen. The first secrete proteins called antibodies, which are distributed via the blood or the exposed surfaces to the environment, such as mucous. Antibodies are glycoproteins that circulate in the bloodstream looking for antigens that cause some type of damage to the body. Antibodies recognize and neutralize pathogens in a highly efficient way. Once the antibodies are produced, they remain circulating in the bloodstream for several months, which generates immunity for a long period of time to a certain antigen, in other words, they are capable of recognizing other molecules (antigens) in a very specific way and forming stable complexes with them (immune complexes). Its appearance in plasma is part of the adaptive immune response, in what is known as a specific humoral response, constituting a very effective defense against pathogens.
Jeremy is sitting quietly when the muscles in his left leg begin to “twitch.” This activation of movement in his voluntary muscles is most likely due to the release of the neurotransmitter Acetylcholine .
The primary function of acetylcholine is to carry signals from motor neurons to the body's skeletal muscles.
The stress hormones epinephrine and norepinephrine are used by your body to respond to short-term stressors while the stress hormone cortisol provides a more sustained release of energy for prolonged stress.
Epinephrine and norepinephrine are produced by the adrenal medulla during the flight/fight stress response and increase blood pressure, heart rate, and glucose.
<span>The cortisol is steroid hormon with several funstions, one of them is to help the body manage stress</span>
Answer:
<u>True!</u>
Explanation:
The longest geologic era was the Precambrian. It began with the formation of the earth about 4.53 billion years ago, and ended about 542 million years ago.
This means this period lasted approximately 3.98 billion years!
As such it's undoubtedly the longest geologic era by a long shot!
