Explanation:
North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere. In can also be described as a northern subcontinent of the Americas[5][6] in models that use fewer than seven continents. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the west and south by the Pacific Ocean, and to the southeast by South America and the Caribbean Sea.North America covers an area of about 24,709,000 square kilometers (9,540,000 square miles), about 16.5% of the earth's land area and about 4.8% of its total surface.
Complete question: Which Best describes how water moves during osmosis?
A. From passive transport regions to active transport regions
B. From active transport regions to passive transport regions
C. From high solute concentration to low solute concentration
D. From low solute concentration to high solute concentration
Answer:
The correct option is D(From low solute concentration to high solute concentration)
Explanation:
Osmosis can be defined as the thermal movement of water molecules through a selectively permeable or semi-permeable membrane.
A selectively (differentially) permeable membrane will only allow certain molecules to pass through it. Water molecules can pass through a selectively permeable membrane easily but solutes(for example, sugar molecules) cannot.
Using sugar solution to explain further, the following occurs when equal volume of a weak( low solute concentration) and a strong sugar solution( high solute concentration) are separated by a selectively permeable membrane. A diffusion gradient exists between the water molecules in the two solutions. As a result, water molecules move from the low solute concentration to high solute concentration through the membrane. This water movement continues untill there is equal concentration of sugar on the both sides of the membrane.
Answer:
An identical setup but replacing the enzyme with an equal volume of water
Explanation:
When carrying out any experiment, it is important to set out a control in order to increase the reliability of the data and results.
The control minimizes the effects of variables other than the independent variable.
In the above experiment, starch has to be eliminated and replaced with water. Water does not have starch hence the digestive enzyme being tested will not have any effects making the data and results from the experimental group reliable.
Answer:
They are all carbohydrates.
Explanation:
Homo polysaccharides include starch, glycogen, and cellulose (same type of sugar-all made of glucose).
1- Amylose and Amyloprotein are the components of starch. Amylose is a branched chain with alpha 1–4 and alpha 1–6 at the branch point, whereas Amylopectin is a linear chain with alpha 1–4 and alpha 1–6 at the branch point.
2- Glycogen is created by forming a branched chain from glucose at alpha 1–6. It has a lot of branches.
3- Cellulose is a linear chain of glucose molecules with beta bonds.
Starch and glycogen serve as short-term energy stores in plants and animals, cellulose found in plant cell wall only.
