Why does most of the absorption occur in this organ and not earlier in the GI tract?

1 answer:

6 0

Digestion occurs when food is moved through the digestive system. It begins in the mouth and ends in the small intestine. The final products of digestion are absorbed from the digestive tract, primarily in the small intestine.

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Which protein is responsible for unraveling the DNA double-helix into 2 strands to prepare it for copying?

mr Goodwill [35]

The answer is; DNA helicase

They unzip the double helix into single strands during replication. The unzipping occurs at regions called origins where replication is initiated. The protein breaks the hydrogen bonds (using energy from ATP) between the complimentary bases of the strands hence forming a replication fork.

6 0

3 years ago

A female patient who is diabetic sustained an ST-elevation myocardial infarction (STEMI). The nurse provides discharge teaching.

Aneli [31]

Answer:

The options

A) "Medications are needed to prevent heart failure."

B) "I will take aspirin, atenolol, and captopril indefinitely."

C) "My blood pressure should be less than 130/80 mm Hg."

D) "Daily estrogen will prevent another heart attack."

The CORRECT ANSWER IS D)

D) "Daily estrogen will prevent another heart attack."

Explanation:

A reduction in the natural hormone estrogen levels could be a causative factor in heart disease increase within post-menopausal women. Estrogen is thought to show a positive impact on the inner layer of artery wall, functioning in such a way to keep blood vessels elastic.

In spite of the advantages of estrogen, the American Heart Association speaks against employing postmenopausal hormone therapy to decrease the likelihood of coronary heart disease or stroke as some research works have revealed that it vividly do not decrase the risk of heart attack but increases the likelihood of blood clots and stroke.

4 0

3 years ago

What is the relationship between a chromosome and DNA?

igomit [66]

C is the correct answer

6 0

2 years ago

2. Can the classification system change? If so, provide an example of a way it has changed in the past. (2 points)

Elis [28]

Yes, classification system is still evolving together with our knowledge.

But, before changing the name (e.g. of a species) it is important to collect and gather a wealth of information in order to support that change. Classification system is still evolving. The reasons for the changes are DNA analyzes. It is the new way for discovering relation between organisms and put them in the right context (classification used to be based on morphological characteristics).

Change in classification can be shown in an example of fungi. In the 90s fungi classification included only phyla Chytridiomycota and Zygomycota. Now theyhave been classified mainly on the basis of characteristics of their sexual reproductive structures. So, there are 7 phyla now: Microsporidia, Chytridiomycota, Blastocladiomycota, Neocallimastigomycota, Glomeromycota, Ascomycota, and Basidiomycota

7 0

3 years ago

What are the differences in the way lipids are found or function in plants and animals?

GalinKa [24]

Lipids are stored as triacylglycerols and waxes on both animals and plants

<h3>What is lipids ?</h3>

Lipid can be described as an organic compound that is not soluble in water. lipid is an essential component that is needed for proper functionality in both plants and animals.

In plants, lipids help provide lots of energy that is needed for different metabolic processes that goes on in the plant. Lipids also help fight off pathogens in plants

In animals, lipids also serve as an energy source and they help in the regulation of the different hormones present in the body. Lipid also help signal important molecules when they are required in the body and they also help in the proper digestion of food molecules.