1. <span>C) monosaccharide
2. </span><span>A) uracil (U)
3. </span><span>B) polysaccharide
4. </span><span>A) phospholipids
5. </span><span>C)Their shapes fit snugly together</span>
Answer:
Cellulose (in the lettuce)
Explanation:
- A tossed salad usually consists of many vegetables such as lettuce, onions, tomatoes, cucumbers, etc. and then, these vegetables have added dressings which can be of different types.
- When a person eats a tossed salad then the lettuce will be least digested as it is composed mainly of cellulose and the human body is incapable of digesting cellulose.
- The inability to digest cellulose by human beings is because there are beta acetal linkages present in the cellulose and human beings lack the enzymes that can break the linkage.
- However, the undigested cellulose aids in the process of digestion as it acts like fiber and thus, the process of digestion can take place smoothly.
- Thus, the intake of cellulose-rich foods is also essential.
In this problem we will use the formula: f = c/λ
Wherein: f = frequency
c = speed of wave
λ = wavelength of wave
500 km/h / 200 km = 2.5 Hz
<span>In this problem, speed and the distance between
crests are given. Therefore, all you have to do is to divide the speed by the wavelength
to determine the frequency using the formula provided.</span>
Answer:
Salmon populations in the United States is declining due to the following factors:
1. Over-fishing and human activities have put a major influence on the population of salmon.
2. Due to industrialization, urban growth, unplanned farming, deforestation, and pollution would have imparted strains on the stocks of salmon. Apart from this chemical contamination from the industrial run-off and agricultural activities are also declining populations of salmon.
3. Genetically modified fish from hatcheries usually escape and interbreed with wild fish, thus, changing the genetic features of the populations.
4. Construction of hydropower dams is also a major cause of the salmon population declining.
