Blood vessels, which lead to the skin capillaries, become narrower they constrict which allows less blood to flow through the skin and conserve the core body temperature. This is called vasoconstriction.
Answer: Substances that are protein based cannot cross the lipid cell membrane, but can exert their effect by binding to the proteins based receptors present on the lipid bilayer.
Explanation:
Hormones such as calcitonin , Parathyroid hormone and pituatry horomones are proteins and water soluble.They cannot cross lipid bilayer but can bind to ligand binding protein receptors.
These receptors are protein macromolecules that are specific in nature for specific hormones.
After binding to the receptors, these hormone-recpetor complexes activate second messengers and regulate the downstream effects.
Oxidative Phosphorylation is the metabolic process needed
to provide energy for the cell. It is the final stage in the process of
cellular respiration, where acetyl CoA produce energy precursors that leads to the
phosphorylation of ADP, producing adenosine triphosphate (ATP) and in return
provide energy. Moreover, when the body lacks oxygen, fermentation happens.
During glycolysis, only two ATP molecules are produce and the pyruvate is
reduce to NADH forming lactate. Meanwhile, in alcoholic fermentation pyruvate
is converted to ethanol, releasing CO2. Lastly, the co-enzyme that is involved
in photosynthesis is NADP+ where extra phosphate group is attached.
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Answer:
A test tube would be used
Explanation:
The test tube refers to a laboratory device that is made of graduated glass for which cylinder used to measure small quantities of liquids that is from 5 mL to 2 L. The most suitable type of specimen must be chosen for measuring the liquid volume, in this situation that is a 15 mL. The specimen is shutdown to lower and has a support base.
Therefore the correct answer is a test tube.
