Answer:
<em>Most polymers are long chains of repeating, identical, carbon-containing molecules called monomers.</em>
Explanation:
Lipids are the exception because they have an additional, nonidentical molecule attached to each monomer chain. The additional molecule varies with the type of lipid.
Proteins are made of polypeptides, the monomer is an amino acid
Nucleic acid’s polymers are usually just referred to as RNA or DNA, depending on the variety of nucleic acids present.
Answer:
The missing answer choices are:
a. hypotonic
b. isotonic
c. osmosis
d. hypertonic
The correct option is <u>d. hypertonic</u>
Explanation:
A hypertonic solution has a higher concentration of solutes than the concentration of solutes present inside the plant. As there is a difference in concentration between the inside and the outside of the plant, the plant loses water in an attempt to balance the difference. As a result, there is an excessive loss of water that dehydrates the plant and kills it.
Answer:
Pet keeping wasn't generally accepted in Europe until the end of the 17th century, and it wasn't common among the middle classes until the late 18th century. Pet keeping in its present form is probably a 19th century Victorian invention. At this time, it was perceived as a link with the natural world, which itself was no longer seen as threatening. It also allowed a visible demonstration of man's domination over nature.
In present-day societies, dogs have a number of functional roles, from ornamental to status symbol, as helpers, and as companions. Dogs can also act as a channel for personal expression because people express their personality in the breed they own. For example, rare breeds are often used as indicators of status. Guide dogs for blind people and hearing dogs for deaf people are examples of pets who are kept as helpers.
But the most common reason for owning pets in Western societies is companionship. In recent years, there's been a growing awareness of the very positive effects this relationship can have on human health and psychological well-being, and a recognition of the therapeutic value of companion animals.
Answer:
A. Hydrologist
Explanation: A hydrologist is the environmental scientist who is likely to study methods of water conservation and decontamination. He is the person who carries out research on circulating, distributing and studying physical properties of the underground surface of the earth, and its surface waters.
