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Simora [160]
3 years ago
15

What enzyme present in saliva helps in digestion of carbohydrates?

Biology
1 answer:
Flauer [41]3 years ago
5 0
Saliva contain the enzymes that help in breakdown of large food molecules into smaller ones so that the body can absorb them
Saliva contains an enzyme called amylase to break down and digest the carbohydrates
so i conclude option B is correct
hope it helps
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What if living cells released all their energy at once​
Vsevolod [243]

Answer:

they will lose their energy and die

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5 0
3 years ago
Modern Native Americans have very high frequencies of Type O blood. In some places in North and South America, the frequency is
Brilliant_brown [7]

Native Americans and Type O Blood

Modern Native Americans have very high frequencies of Type O blood.

In some places in North and South America, the frequency is as high as 100%. Anthropologists believe that early Native Americans arrived in North America by crossing over the Bering Land Bridge around 15,000 years ago, from East Asia.

Modern East Asian populations, with whom modern Native Americans share ancestry, do not have high frequencies of Type O blood. Instead, they have some of the lowest frequencies of Type O blood in the world.

B. Sickle-Cell Anemia

As many as 20-30% of people living in equatorial Africa have at least one allele on Chromosome 11 that codes for sickle-cell anemia (they have an, "S" rather than an, "A" allele). This is odd because usually, 80% of people who have two S alleles die before they can reproduce,

For each of the following cases:

1. What forces of evolution are at work?  State all that apply.

Mutation

Natural Selection

Genetic Drift

Gene Flow.

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8 0
2 years ago
The dental formula 2-1-2-3 corresponds to what order of teeth?
Wittaler [7]
Actually, we have 4 incisors,1 canine on each side, 2 premolars on each side and 3 molars on each side. The most logical answer would be b.
3 0
3 years ago
A variegated leaf with green and yellow patches is used for an experiment to prove that chlorophyll is required for photosynthes
olga_2 [115]

Answer: The colour of A before the starch test is GREEN while after the starch test is BLUE- BLACK. The equation for photosynthesis is

6CO2 + 6H2O → C6H12O6 + 6O2.

Explanation:

PHOTOSYNTHESIS is the process by which green plants use energy from sunlight to manufacture their own food. It is a building up process since simple inorganic compounds such as carbondioxide and water are built up into large organic compounds such as glucose and OXYGEN is given off as a by product.

Oxygen given out in photosynthesis occurs in the light stage during the process of photolysis of water. This occurs when the chlorophyll traps, absorbs and captures light energy and become energised. The energised chlorophyll supplies energy which is to split molecules of water into hydrogen ion ( H+) and hydroxyl ion ( OH-). The hydroxyl ion is reconverted to water and oxygen is given out as a by product.

To show that chlorophyll is NECESSARY for photosynthesis, a variegated leaf with green and yellow patches is used for an experiment.

The green portion is marked A and the yellow portion marked B. The leaf is tested for starch using the procedure below:

--> place leaf in boiling water for half a minute to kill it.

--> decolorize leaf by placing it in hot alcohol.

--> dip decolorize leaf in hot water to soften it.

--> place leaf on tile and add iodine solution to it.

RESULT: It would be found that only the green parts contain starch as blue+black colouration is observed while yellow area is unaffected by iodine.

5 0
3 years ago
Which of the following is accurate in describing the placement and classification of iodine?
Brut [27]
<span>A. Iodine is located in Period 5, Group 17 and is classified as a nonmetal.  ....................................................................................................................................................................</span>
8 0
3 years ago
Read 2 more answers
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