Answer:
water is the universals solvent and the compound that wouldnt disolve is oli because water and oil don't mix
Explanation:
Answer:
a. All of these
Explanation:
<em>The characteristic of skin that makes it unpleasant for most bacteria would be due to all of the conditions.</em>
Most bacteria require humid condition in order to grow and as such, the desiccated nature of the normal human skin makes it difficult for them to establish themselves and grow on it.
The pH of the skin is usually acidic due to the production of lactic acid during sweating and the activities of the normal skin bacteria. The acidic pH hinders the growth of bacteria that can potentially become pathogenic to the skin.
Also, the skin produce antimicrobial substances at low pH which hinders the growth of pathogenic bacteria.
Hence, options b, c, and d are correct.
Answer:
C. Population shrinks; 15 birds in the end
Explanation:
Let us understand some of the given terms;
immigration is a form of migration in which organisms comes into a territory.
emigration is a form of migration in which organisms leaves a place
population is a group of organisms of the same species
Given:
Population = 21 birds
Immigrant = 3 birds
Emigrants = 9 birds
Population change = total number of birds + immigrant - emigrants
= 21 + 3 - 9
= 15 birds
The population will shrink giving 15 birds in the end
Answer:
- Humans don't have the enzyme to digest the bonds between monosaccarides that make up fiber
- fiber contains potential energy
Explanation:
Dietary fiber (FD): edible part of plants that resists digestion and absorption in the small intestine and undergoes partial or total fermentation in the large intestine. Its role in intestinal function is the criterion that has been used to establish the recommendations. It is considered that an intake of 25-30 g / day of FD (14 g / 1,000 kcal), from food - not from supplements - and from different sources, is the recommended amount. The desirable ratio between insoluble / soluble fiber is 3/1. Food fiber, according to its chemical characteristics and its effects on the human body, is classified as soluble fiber and insoluble fiber.
The soluble fiber has a branched structure that allows it to retain water forming gels. It is very fermentable because of the intestinal flora, capable of producing a large amount of volatile fatty acids (acetate, butyrate, propionate). It helps to increase the fecal bolus, increasing the bacterial mass. Within this type of fiber is inulin, pectins, gums and fructooligosaccharides. It is the type of fiber that predominates in legumes, in cereals such as oats and barley and in some fruits.
Insoluble fiber captures little water, is not fermentable by the intestinal microbiota and its mixtures have low viscosity. Decreases the viscosity of the bolus and the intestinal transit time. This type of fiber is very useful in preventing constipation. Ex .: cellulose, hemicellulose, lignin and resistant starch. It is the type of fiber that predominates in wheat bran, whole grains, some vegetables and in general, in all cereals.
The fiber being composed of monosaccharides of monosaccharides could potentially be used as energy if the polysaccharides constituting the fiber could be degraded.