Answer:
Epinephrine
Explanation:
Epinephrine, which is also referred to as adrenaline, is the active sympathetic hormone that is secreted by the medulla of the adrenal glands into the bloodstream to initiate the body’s fight-or-flight response to stress or threat, causing increased blood pressure, sugar metabolism, heart rate, breathe rate, muscle strength as well as sweat. Pete's sighting of a bear as a threat stimulates the sympathetic nervous system to initiate the secretion of epinephrine which brings about the fight-or-flight response of the body to increase alertness of the body.
Answer:
<em>-Changing electric and magnetic fields </em>
Explanation:
Electromagnetic forces from the sun are formed when electric charges change their potential energy.
This electromagnetic forces are produced at different wavelengths across across the EM spectrum.
The sun also emits x-rays during solar flares.
The absorbed energy causes one or more electrons to change their location and get replaced by absorbed energy.
Answer:
A
Explanation:
These three phosphate groups are linked to one another by two high-energy bonds called phosphoanhydride bonds. When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP).
Silicon <span>(Si) lies in the same group on the periodic table as carbon (C). Similar to carbon, it is able to form bonds with four other atoms at the same time, it is able to form polymers and combine with oxygen (O2). Silicon could allow life to be based on it as it can create molecules sufficiently large to carry biological information.</span>
The diffusion of chemicals and gases in and out of cells is an essential activity in human organs. Diffusion of oxygen and carbon dioxide gas occurs in the lungs. Diffusion of water, salts, and waste products occurs in the kidneys. Diffusion of calcium from food into cells occurs in the intestines.
What type of diffusion?
