How many people have lost their lives on 9/11?

1 answer:

8 0

2,996 people were killed and more than 6,000 others were wounded during the attacks, moment of silence for all those poor people and their families.

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In the kidneys, the countercurrent mechanism involves the interaction between the flow of filtrate through the loop of Henle of

Irina18 [472]

Answer:

The answer for this statement is "True".

Explanation:

In the kidneys, the countercurrent mechanism involves the interaction between the flow of filtrate through the loop of Henle of the juxtamedullary nephrons (the countercurrent multiplier) and the flow of blood through the limbs of adjacent blood vessels (the countercurrent exchanger). This relationship establishes and maintains an osmotic gradient extending from the cortex through the depths of the medulla that allows the kidneys to vary urine concentration dramatically which is true.

5 0

3 years ago

How does an animal cell react when there is no glucose available to carry out cellular respiration?

Verdich [7]

Answer:

B) It breaks down polysaccharides such as starch.

Explanation:

Polysaccharides are long chains of monosaccharides like glucose joined together with glycosidic linkages. While plants can simply make glucose via photosynthesis, animals rely on glucose sourced from their diet. In animals, glucose is stored as glycogen; however, plant storage polysaccharides like starch are regularly broken down through digestion using enzymes.

Enzymes are proteins which catalyze chemical reactions like the breakdown of large polysaccharides. Alpha amylase, an enzyme produced in the pancreas, is also found in human saliva; it catalyzes the hydrolysis, or breakdown of starch into glucose. Amylase acts on polysaccharides bonds at random points along the chain by splitting the α 1-4 glycosidic bonds. This produces maltose, dextrin and glucose; this glucose is used in ATP synthesis via respiration, ethyl alcohol fermentation and lactic fermentation.