BIOLOGY HIGH SCHOOL

An enzyme known as amylase is found in the saliva of humans. This enzyme helps to begin the process of digesting starch molecules in the foods we eat. Which of these BEST describes how enzymes like amylase help in the process of digestion?A) Amylase acts as a buffer to keep the pH of foods at a consistent level.
B) Amylase breaks down the food molecules directly by forming powerful acids.
Eliminate
C) Amylase is a catalyst that speeds up the chemical process of breaking down food molecules.
D) Amylase contains the DNA molecules necessary to assemble the proteins needed for digestion.

Answers

Answer 1
Answer: C. Amylase is a catalyst that speeds up the chemical process of breaking down food molecules
Answer 2
Answer: For I one, I would just go with C. Hope that this helps you...

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Please help me and please use your own word and do not copy and paste form google thank youWhat is a macromolecule

Answers

Answer:

A macromolecule is a very large molecule, such as protein, commonly composed of the polymerization of smaller subunits called monomers. They are typically composed of thousands of atoms or more. A substance that is composed of monomers is called a polymer .

Explanation:

The core of a star left after a Supernova explosion

Answers

I think the term you're looking for is nebula.
Hope that helped you.

Anaerobic photoautotrophs were the first organisms to release oxygen into the early atmosphere.True
False

Answers

false, they were not Toxic was actually poinsonous to the Anaerobic photoautotrophs. However cyanobacteria (a.k.a pondscum) is believed to be the first bacteria to give off oxygen as a by-product of photosynthetic processes.

What is combustion and how does it affect the carbon cycle

Answers

Combustion is the burning of fossil fuels such as coal, natural gas, oil, etc. It affects the carbon cycle because it adds much more carbon to the air. That then causes phenomenon's like global warming. Therefore, it is bad for our environment and ozone layer.

A neighborhood group wants to build a new playground using donations from residents. The amount needed from each donor varies inversely to the number of people donating. If 25 people donate, each of them would need to contribute $135. Solve for the amount each person needs to contribute if 45 people donate.

Answers

First of all, we need to find out how much money is needed ,

25 x $ 135 = $ 3375 

Next, we just need to divide this amount to total contributors

$ 3375 / 45 = $ 75 per person

Hope this helps
 

Answer:

Each person needs to contribute is $75.

Step by step explanation:

It is given that the number of people is 25. Each of them would need to contribute $135.

Total amount contributed by 25 people is the product of 25 and 135.

25* 135=3375

Total amount contributed by 25 people is $3375.

Now 45 people has to contribute the same amount $3375.

If 45 people donate $3375, then each people donate

(3375)/(45)=75

Therefore, each person needs to contribute is $75.

Which explanation is most likely the reason for the evolution of a larger brain in humans?The size of the human brain increases the more it is used.
A larger brain allows humans to solve complex problems.
The size of the human brain has changed randomly over time due to mutations.
A large brain increases humans’ ability to fight and survive disease.

Answers

The most likely reason for the evolution of a larger brain in humans is that the size of the human brain increases the more it is used. The correct option is A. Evolution findings show that as the activities of man increase and as he advance in using his brain to develop new things that are needed for his convenience, the brain size also continues to increase.

Answer:

A large brain allows humans to solve complex problems.

Explanation:

The large brain in humans has enabled them to solve a complex problem in of the real world and also enabled them to survive more as compared to humans with the smaller brains.

In seven million years the size of the human brain is tripled. That allows them to store and process a huge amount of information and also help to interact with the people in the surrounding better.  

Hence, the correct answer would be option B.
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Question 1 Which of the following represents the initial reason why NATO was formed? A. to provide for the mutual defense of any member nation against an attack by a non-member B. to form an agreement between western democracies never to declare war on each other C. to stop the United States from interfering in the rebuilding of European nations' militaries D. to force the Soviet Union to form the Warsaw Pact for common defense of communist nations Question 2 Which of the following represents part of the reason the United States was interested in supporting the economies of Europe with the Marshall Plan? A. The United States feared that Europe would lose control of its colonies and this would cause war. B. The United States wanted to use it to force European countries to join organizations like NATO. C. The United States wanted to promote the rebuilding of Europe to prevent the spread of communism. D. The United States needed Europe to be economically stable enough to participate in the Korean War. Question 3 Use the following post-World War II poster published by the European Recovery Program (ERP) to answer the question below: This is a color propaganda poster supporting the United Nations. It shows a working windmill with the flags of the UN countries as the blades of the fan. Public Domain What is the best interpretation of this poster? A. To win the Cold War, all European nations must cooperate. B. With the United States as the core, Europe can regain political momentum. C. European nations should collectively reject the Marshall Plan. D. Under the Marshall Plan, the U.S. and European nations can cooperate to rebuild Europe. Question 4 (Worth 5 points) Why did the Allies consider the League of Nations when developing the United Nations? A. The Allies wanted to understand clearly the weaknesses of the League. B. The Allies thought it would be best to recreate the League because it worked so well. C. The Allies believed that the United Nations should also be based in Geneva. D. The Allies understood that the United Nations needed to celebrate the League's success. Question 5 (Worth 5 points) What was the combined effect of both the UN Universal Declaration of Human Rights and the Nuremberg Trials? A. They started the Cold War between the U.S. and the USSR B. They led directly to war on the Korean peninsula. C. They codified international humanitarian law. D. They divided Germany into eastern and western parts. Question 6 (Worth 5 points) Use the map below to answer the following question: This is a map showing the Korean Peninsula divided as it was after the end of World War II. The northern portion is shaded orange and is labeled North Korea. The southern portion is shaded blue and is labeled South Korea. Which of the following reasons best explains the division of the Korean peninsula after WWII as shown? A. The Chinese communist government had moved their troops to the 38th parallel in Korea during the war and taken control of the northern part of the country. B. The defeat of Japan led to the division with a Soviet backed communist government in the north and a U.S. backed democratic government the south. C. The South Koreans had fought on behalf of the Allies during WWII while the North Koreans had fought on behalf of the Axis powers. D. The United Nations Charter of 1945 called for the division of the country into a democratic North and a communist South. Question 7 (Worth 5 points) Why was West Germany accepted into NATO in 1955? A. to counterbalance the Western European alliance B. to convince East Germany to join NATO C. to respond to Stalin's direct threat to attack West Germany D. to prevent communism from spreading to West Germany *** Question 8 (Worth 5 points) Which of the following is a result from the Potsdam Conference? A. the Soviet Union gained direct control over Polish territory and were given responsibility for administering its government B. the borders of Poland were redrawn to reclaim territory lost during the war to both Germany and the Soviet Union C. the Polish government signed the Warsaw Pact with the Soviet Union to better defend themselves from Western Europe D. the Soviet Union was forced to repay the Polish government for the loss of military equipment during the invasion of 1939