Answer:
Blood Brain Barrier(BBB)
Explanation:
This is a biological interface of special endothelial cells of astrocytes, pericytes , capillaries, neurons and other structures, acting as a physical barrier or gate separating the Central Nervous system from the peripheral blood circulations. Thus it formed a tight junction serving as a physical barrier to selectively regulate the entrance of substances from the cerebral blood flow into the brain, therefore maintaining homeostasis of the brain.
From above any substances absorbed into the blood stream irrespective of the mode of entry are transported through the BBB, and are selectively regulated to enter the brain cells by the BBB's interactions with the blood vessels, hormones etc.
Basically it allows the passage of nutrients, a few drug, hormones and resists certain toxins and pathogens for the brain homeostasis.
Answer:
These molecules are referred to in biology as the molecules of life. ... Without any of these four molecules, a cell and organism would not be able to live. All of the ... Many organisms have what is known as a cell wall that surrounds their cell. ... There are two types of nucleic acids that are essential to all lif
Explanation:
1.) A persons genes are found in their chromosomes. The correct answer is D, your chromosomes. The correct answer is D.
2.) The shape of DNA is called a double helix. The strands run opposite each other and twist together. The correct answer is B.
3.) The relationship between a chromosome and DNA is that chromosomes are made of DNA. The correct answer is A.
4.) One thing that parents pass on to their offspring is genes. For example, hair color, eye color, skin color. The correct answer is A.
Answer:
Choosing protein as macromolecule.
Explanation:
The given environmental changes can lead to structural changes in protein as well:
pH - Several amino acids contain sidechains with practical gatherings that can promptly pick up or lose a proton. Changes in pH would prompt an adjustment in the charge of the amino acids, prompting charge-charge attraction or repilsion between non-interfacing amino parts.
Temperature - High temperatures can prompt protein denaturation. Warmth can upset hydrogen bonding and hydrophobic interactions.
Reduction or oxidation Environment - Some tertiary structure of protein folding is held by disulfide linkages. Reducing agent will lead to unfolding by introducing itself to break disulfide bonds.
Effect of these change: Sequence of amino acid and structure of protein molecule form determines function, any slight change to a protein's structure may result in the protein to become dysfunctional or produce different product.
Answer:
c
Explanation:
Electrical power is the correct answer
