What is DNA? (2 points)

1 answer:

3 0

Contains the information for making proteins in the cells and ensures that the information is passed to new cells and new offspring. Thus, the correct option is C.

<h3>What are proteins?</h3>

Proteins are big, complex molecules that play a number of important tasks in the human body. They are essential for the structure, function, and control of the body's tissues and organs, and they do the majority of their job in cells.

DNA (deoxyribonucleic acid) is the molecule that conveys genetic information for an organism's development and function. DNA is made up of two connected strands that loop around each other like a twisted ladder, giving it the shape of a double helix. The backbone of each strand is made up of sugar (deoxyribose) and phosphate groups that alternate. Each sugar has one of four bases attached to it: adenine (A), cytosine (C), guanine (G), or thymine (T).

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"Twice the protein!" Have you seen this advertising slogan for Greek yogurt and some nutritional sports products? Do we really n

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Answer:

A. 60 grams protein

B. 74 grams of protein

Explanation:

The amount of protein needed depends on weight and lifestyle. The daily minimum recommended by the National Institutes of Health is 0.36 grams per pound for a sedentary person. But the daily optimal intake for this same sedentary person is 0,8 grams of protein per kg of body weight. On the other hand hand, adults with a more active lifestyle need more protein in their body, the intake should be between 1,2 and 2,0 grams of protein per kg. For example, endurance runners need up to 1,4 and strength training athletes need up to 1.8 g of protein per kg.

The first step for calculating protein requirements is calculate the weight in kilograms, so we need to divide the weight in pounds by 2,2.

154lb/2,2= 70 kilograms

Then we have to multiply the weight in kg, times the number of protein needed per day, 0,8 for a sedentary healthy adult.

70kg x 0,8= 56 grams

Part A:

165-pound (lb) male who is healthy but sedentary

165 lb/2.2 = 75 kg

75 kg x 0,8 = 60 grams protein per day

Part B. Sarah is moderately active so we need to use a number between 1,2 and 2, since shes active but not very active we can use the 1,2.

136-lb/2,2= 62 kg

62 kg x 1,2 = 74 grams of protein

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Which statement is an example of the chemical potential energy in adenosine triphosphate (ATP) being turned into work?

evablogger [386]

Answer:

The correct answer is option (C) "After splitting ATP, a protein changes shape to pump ions across a membrane".

Explanation:

Adenosine triphosphate (ATP) is an organic chemical molecule considered the "molecular unit of currency" of intracellular energy transfer, for the high level of energy that is released when ATP is breakdown into adenosine diphosphate (ADP). ATP provides energy to drive many processes in living cells. One example of how the chemical potential energy of this molecule is turned into work is that after splitting ATP, a protein changes shape to pump ions across a membrane. The energy of the splitting of ATP into ADP will provide energy for the protein being able to change shape, resulting in pumping ions across a membrane.

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