Answer:
The correct answer is D. proteins
Explanation:
The endothelium is a tissue that fulfills multiple functions, from vascular homeostasis to those related to the passage of substances to the cells and tissues of the body. Diffusion is a type of passive transport, where all the exchanges between the blood and the cells use the interstitial fluid as an intermediate route. Substances in the blood or interstitial fluid can pass through the walls of a capillary by diffusing through intercellular clefts or transcellular pores (fenestrations), or through endothelial cells (cells that form the circulatory system comprising arteries, veins, and capillaries). Fat-soluble materials such as oxygen (O2), carbon dioxide (CO2), can pass through the capillary walls directly through the lipid bilayer of the plasma membrane of endothelial cells. Most plasma proteins (those that are present in the blood) cannot pass through the walls of the continuous and fenestrated capillaries because they are very large. The gradients for the correct diffusion of respiratory gases, nutrients and waste products are created by the cellular metabolism that consumes some and produces others, leading to increases or decreases in their concentration in the interstitial fluid.
Answer:
Hail forms in tall clouds as cumulonimbus. Ideal conditions for hail formation are very high clouds with intense updrafts, containing a large quantify of supercooled water (liquid water under 0*C) and with dust
particles in the atmosphere.
Answer:
Decomposers are always at the bottom of the food web
Explanation:
The decomposes break down dead plants and animals, therefore putting the nutrients back into the soil. The producers then receive these nutrients and are thus spread throughout the food web.
Answer:
D. Stabilizing selection
Explanation:
Stabilizing selection helps to prevent extreme trait characteristics and focuses on the non extreme ones to ensure that such traits are prevalent.
Due to the fact that there isn’t enough food for a large number of the offspring and also the risk of losing all the eggs to those who had a small amount of eggs, stability was achieved after some generations that ensures that there was a balance in ensuring the eggs weren’t too few and too many.
Answer: =<u>Convergent</u> evolution
Explanation: <u>Convergent</u> evolution occurs when organisms share a trait that originated in an ancestor but changed over time in different populations.