Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation. Arteries and veins are two of the body's main type of blood vessels.
the beak is what keeps most birds alive
Answer:
e. unique three-dimensional shape of the fully folded polypeptide.
Explanation:
The tertiary structure of a protein is the unique three-dimensional structure which emanates from the interaction between the “R groups” of the several amino acids that make up the polypeptide. Hydrogen bonding is one of the interactions that occur that gives the protein this structure. Other interactions are ionic bonding, dipole-dipole interactions, hydrophobic interactions, among others. The function of a protein is dependent on its tertiary structure, as a disruption of the tertiary structure causes a protein to be denatured, thereby rendering the protein not functional.
Answer:
None of these is true. (Ans e.)
Explanation:
C) Inhaled chemicals can irritate the throat or nose, damage the lungs, and enter through the lung to the bloodstream.
A) Skin is not impermeable in nature.
B) It is not safe to smoke around hazardous chemicals, as long as you wear gloves, because people can carry hazardous chemicals from cigarette smoke then releasing those compounds into non-smoking environments.
D) Alkaline can denature proteins, and they also break down fats in a process which is known as saponification. Burns from alkalines worse than burns from acids.
Answer: The absorbed energy warms the atmosphere and the surface of the Earth. This process maintains the Earth's temperature at around 33 degrees Celsius warmer than it would otherwise be, allowing life on Earth to exist. Greenhouse gases keep our planet livable by holding onto some of Earth's heat energy so that it doesn't all escape into space. This heat trapping is known as the greenhouse effect. Just as too little greenhouse gas makes Earth too cold, too much greenhouse gas makes Earth too warm.
Explanation:
