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inna [77]
3 years ago
11

Select all that apply.

Biology
2 answers:
Contact [7]3 years ago
8 0

Functional groups are a group of molecules attached to a carbon-based core of an organic molecule. Key functional groups are 3. phosphates


Ksenya-84 [330]3 years ago
6 0

Key functional groups are aminos, phosphates and carbonyls.

Functional groups are groups of atoms that are found along the carbon backbone (composed of carbon and hydrogen atoms) of organic molecules and they impart specific chemical properties to those molecules. Functional groups include; amino, hydroxyl, carboxyl, phosphate, carbonyl and methyl groups.

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The half — life of nickel is 96 years. How much of a 30-gram sample is left after 270 years?
-Dominant- [34]

The amount of the 30 gram-sample that will remain after 270 years is 6.61 grams

<h3>How to determine the number of half-lives </h3>

We'll begin by obtaining the number of half lives that has elapsed. This can be obtained as follow:

  • Half-life (t½) = 96 years
  • Time (t) = 270 years
  • Number of half-lives (n) =?

n = t / t½

n = 270 / 99

n = 2.8125

<h3>How to determine the amount remaining </h3>
  • Original amount (N₀) = 30 grams
  • Number of half-lives (n) = 2.8125
  • Amount remaining (N) =?

The amount remaing can be obtained as follow:

N = N₀ / 2^n

N = 30 / 2^2.8125

N = 6.61 grams

Learn more about half life:

brainly.com/question/26374513

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5 0
1 year ago
How can a temporary lake create salt flats in Death Valley?
evablogger [386]

Answer:

A temporary lake create salt flats in Death Valley when Holocene lakes began to evaporate.

Explanation:

"Each time it has rained since, a new layer has been added. The flat is a vast area covered in salt that was deposited from evaporated water. When the water runs down the mountain, it dissolves minerals that precipitate out as the water evaporates."

Hope this helped!

Have a supercalifragilisticexpialidocious day!

4 0
3 years ago
¿Cuáles son los tres tipos de trabajo que realizan los seres vivos en los que emplean la energía química útil?
Alja [10]
Qué significa tener energía? Bueno, piensa en cómo te sientes cuando despiertas por la mañana.
7 0
3 years ago
Which of the following is NOT an example of evidence that supports the theory of evolution?
Ray Of Light [21]
The answe is D because location has nothing to do with genetics
6 0
2 years ago
Which of the following describes the relationship between genes and chromosomes?
kondor19780726 [428]

Answer:

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

Explanation:

3 0
3 years ago
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