What are the constituents of DNA?a. Proteins and sugars
b. Sugars, phosphates, and nitrogenous bases
c. Sugars and lipids
d. Lipids, nitrogenous bases, and proteins

Answers

Answer 1

Answer: B: sugars , posphates , and nitrogen bases

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Which group of animals has existed the longest? A. Tubulidentates B. Perissodactyls C. Artiodactyls D. Sirenians
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Which movement of particles would be most affected by a disorder that causes damage to carrier proteins?

Answers

Answer: active transport

The movement of particles is also known as the active transport that is considered to be the most affected by disorders that may cause damage or destruction to carrier proteins. This process requires high energy and is being aided by enzymes.

C) active transport

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which factor decreases the rate of a chemical reaction? A. an inhibitor B. a co-factor C. increased substrate

Answers

Answer: A. an inhibitor

An enzyme inhibitor is a substance that slows down the action of the enzyme by binding at the active site of the enzyme preventing the binding of the substrate to it. It alters the catalytic activity of the enzyme either by slowing down or simply stopping the catalytic reaction.

The answer is A: An Inhibitor

Which events may cause long-term changes in climate?

Answers

The answer is Changes in the shape of earth orbit. If the earth's orbit put the earth closer to the sun, then the global temperatures of the earth would rise permanently. Conversely, if the orbit change puts the earth further from the sun, then the earth global temperature would drop permanently.

In our ecosystem or current environment, The most scary reason that might happen is the volcanic eruptions. It will cause a long term changes in the climate since when it erupted, together with the lava are many chemicals that mixes with the air.

The sympathetic nervous system controls all _________ responses of the body. a. conscious
b. involuntary
c. emergency
d. repeated

Answers

I believe the correct answer from the choices listed above is option C.The sympathetic nervous system controls all emergency responses of the body. The SNS triggers what is commonly known as the "fight or flight" response. Hope this answers the question.

What is a limitation of using a ball-and-stick model for DNA?a) Some kinds of atoms that are found in DNA must be left out of the models.b) DNA has so many atoms that the size and cost of a model could be too great.c) It is impossible to distinguish different kinds of atoms with models.d) The chemical bonds between the atoms in DNA must be part of the models.

Answers

I would say B. My reasoning behind this is:

Most models can't incorporate all the details of complex natural phenomena. For example, when measuring distances around the Earth it's convenient to model the Earth as a sphere, but this doesn't incorporate variations in distance because of mountain ranges, valleys and other topological features the traveler must traverse. Incorporating these additional details would make the model too complex for easy use. Since models must be simple enough that you can use them to make predictions, they often leave out some of the details.

Please help!!! What is a component of amino acid not contained in starchA. Amino acids contain hydrogen.

B. Amino acids contain oxygen.

C. Amino acids contain carbon.

D. Amino acids contain nitrogen.

Answers

Answer:

Starch is a polysaccharide which comes under carbohydrates.The incorrect option here is option D which says the basic constituent of amino acid, that contains nitrogen as it is not found in starch.

Explanation:

What is the basic component of starch?

Starch is a carbohydrate. Carbohydrates are of different types like monosaccharides, disaccharides, oligosaccharides, and polysaccharides.A monosaccharide is the basic simplest form of carbohydrate and a polysaccharide is the complex one.

The basic formula of any carbohydrate contains, Carbon, hydrogen and Oxygen. The polysaccharide, as the name suggests, it has many glucose molecules linked together as a chain.

Hence, starch is a polysaccharide found in plants. It is stored in the form of a storage molecule in plants. It does not contain nitrogen as its structural component.

learn more about the starch here

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Answer:

Explanation:

Nitrogen is the major atom that is present in amino acids that are not present in carbohydrates.

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Scientists have changed the DNA of a type of cabbage so that it contains a tiny amount of poison from a scorpion’s tail. The poison in the cabbage kills caterpillars that try to eat it. What kind fo example has been exhibit? A). gene therapy B). selective breeding C). genetic engineering D). artificial selection