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forsale [732]
3 years ago
7

Students in biology are studying the macromolecules of life. They used a calorimeter to determine the calories in various types

of food. Once the lab was completed, the students ate the left over food samples. Monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. Elaborate on what happened chemically while chewing the saltine. Include the macromolecules present. A) The saltine is made of flour, a carbohydrate. The flour dissolved in the saliva found in Monica's mouth, which is mostly water. B) The saltine is mostly flour, a carbohydrate. The bonds of the carbohydrate were broken down by an enzyme in Monica's mouth, which is a protein. C) The saltine is a combination of carbohydrate and lipid; enzymes or proteins in Monica's digestive tract broken down the bonds of the two macromolecules in the saltine. D) Three macromolecules are represented. The saltine is a carbohydrate. Nucleic acids direct digestion. Digestion took place in Monica's mouth thanks to enzymes or proteins.
Mathematics
2 answers:
Dimas [21]3 years ago
5 0

Answer:D

Step-by-step explanation:

The answer is D

SSSSS [86.1K]3 years ago
5 0

Answer:

Option (A).

Step-by-step explanation:

Digestion may be defined as the process of breakdown of large food particles into simpler substances that can be absorbed by the body. Digestive system includes the gastrointestinal tract and associated digestive glands.

Monica has eaten saltine. Saltine contains the wheat flour that are made of carbohydrate. The saliva produced in mouth helps in the digestion of carbohydrate.  Saliva contains large amount of water that dissolves the flour and amylase enzymes break down the carbohydrates into simple sugars.

Thus, the correct answer is option (A).

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A cable 20 feet long connects the top of a flagpole to a point on the ground that is 16 feet from the base of the pole. How tall
timurjin [86]
Think of it like a triangle.

The flagpole is vertical and is at 90° to the ground. This makes a right-angle to the ground, which is flat.

Since we have two sides of the triangle already, and they are in a ratio of ?? : 16 : 20 = ?? : 4 : 5, that means that because the triangle is a right-angled triangle, the third and last side must be 3 to complete the ratio! (This is called 'Pythagoras')

Since the other sides were divided by 4 to get the simple ratio, we must multiply 3 to get the actual ratio! 3 × 4 = 12 ft tall flagpole.

3 0
4 years ago
mayelle earns $18000 a year. After a raise, she earns $19500. Find the percent change and if it’s a decrease or increase
Aneli [31]
Ok, it's all pretty much like the "$50 coat is on sale for $35". 

<span>If the regular price of the coat is $50 and now it is on sale for $35, then it will cost you $15 less, like this: </span>
<span>$50 - $35 = $15 </span>

<span>You could also say the coat was discounted by $15, or the coat was reduced by $15, or you'll save $15 if you buy that coat ($50 - $15 = 35). </span>

<span>You could also put it in terms of percentages. If the discount is $15, you can figure that $15 is what percent of the regular price, like this: </span>
<span>$15 = X% of $50 </span>
<span>$15 = X% x $50 (divide both sides by 50 to isolate X) </span>
<span>15/50 = X% </span>
<span>.30 = X% (multiply by 100 to convert to a non-decimal) </span>
<span>30% = X </span>

<span>So, you can say all of the following and they all mean the same thing: </span>
<span>1. the $50 coat is on sale for $35 </span>
<span>2. the $50 coat is discounted by $15 </span>
<span>3. the $50 coat is reduced by $15 </span>
<span>4. you'll save $15 if you buy this coat </span>
<span>5. the $50 coat is on sale for 30% off </span>
<span>6. the $50 coat is discounted by 30% </span>
<span>7. you'll save 30% if you buy this coat </span>
<span>8. 30% savings! </span>
<span>9. Save 30%! </span>

<span>So, how does that apply to the $18,000 a year? Ok, if Shelby earns $18,000 this year and then earns $19,500 next year, then she gets an additional $1,500 ($19,500 - $18,000 = $1,500). In the coat problem, everything was discounted, on sale, going down. In this problem, everything is going up, increasing. </span>

<span>You know the dollar increase is $1,500. To figure the percent increase, you need to figure out that $1,500 is what % of $18,000. Remember, it's not the $19,500 that was increased; it was an increase on the $18,000: </span>
<span>$1,500 = X% of $18,000 </span>
<span>1,500/18,000 = X% </span>
<span>.083333 = X% </span>
<span>8.3333% = X </span>

<span>One more: If Shelby get a 10% increase in her salary at the end of one year, that's the same as saying that Shelby gets her salary plus she gets 10% more, like this: </span>

<span>$18,000 + (10% of $18,000) = </span>
<span>$18,000 + $1,800 = </span>
<span>$19,800 end of first year </span>

<span>For the second year, her salary begins at $19,800 and increases 10%, like this: </span>
<span>$19,800 + (10% x $19,800) = </span>
<span>$19,800 + $1,980 = </span>
<span>$21,780 end of second year </span>

<span>You can do it from here.</span>
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3 years ago
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What is 20 divided by 10 plus 50
Deffense [45]

Answer:

20/10 + 50=52

Step-by-step explanation:

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3 years ago
8.25 greater than 8.250
viktelen [127]
If you are asking if 8.25 is greater than than 8.250, the answer would be no because any zero that is extended from the original number would still be the same.

ex: 6.2  and   6.200000000

(The zeros could go on forever and it would still be the same number)

~Hope I Helped

7 0
3 years ago
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I NEED THIS ASAP- Point A is located at (-5, -8). Point A is reflected across the X-axis to create point B. What is point B?
Rasek [7]

Answer:

(5,-8)

Step-by-step explanation:

if it is reflected across the X axis and this is in quadrant 3 that means if it was reflected it would fall in quadrant 2

6 0
3 years ago
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