Answer the following question given this paragraph: Lipids play several important roles in the body. Triglycerides are stored in fat cells until the body needs to break them down for chemical energy. These stored triglycerides also help insulate the body against extreme temperatures and cushion organs against physical jostling. Phospholipids and cholesterol are important constituents of the cell membrane. These compounds provide structural integrity to the cell wall, since they are not water-soluble. Other steroids are used as chemical messengers in the body, and the fat-soluble vitamins serve a variety of other functions. Q: What play several important roles in the human body? Choices: - cells - tissues - organs - lipids A:
lipids
(Question)
Answer the following question given this paragraph: Figure 26.30 Spherical aberration is caused by rays focusing at different distances from the lens. Q: What is it called when rays focus at different distances from the lens? Choices: - constant aberration - carbon aberration - angular aberration - spherical aberration A:
(Answer)
spherical aberration
Ques: Answer the following question given this paragraph: Figure 5.2 Layers of Skin The skin is composed of two main layers: the epidermis, made of closely packed epithelial cells, and the dermis, made of dense, irregular connective tissue that houses blood vessels, hair follicles, sweat glands, and other structures. Beneath the dermis lies the hypodermis, which is composed mainly of loose connective and fatty tissues. Q: The epidermis is made of which closely packed cells? Choices: - cancer cells - nerve cells - muscle cells - epithelial cells A:
Ans: epithelial cells
(Q).
Answer the following question given this paragraph: Human overpopulation, which is crowding out other species. It also makes all the other causes of extinction worse. Q: What phenomenon is crowding out other species and making all the other causes of extinction worse? Choices: - climate change - human suburbanization - migration - human overpopulation A:
(A).
human overpopulation
Ques:Answer the following question given this paragraph: Q: Phospholipids and some proteins move laterally within what? Choices: - liquids - nuclei - particles - membrane A:

Ans:membrane
Ques:Answer the following question given this paragraph: Q: Each proton has how many units of positive charge? Choices: - three - zero - two - one A:

Ans:
one