What percentage of living matter on Earth is made up of CHNOPS elements?

Exploring the Role of CHNOPS in Biochemistry

Interactive Video
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Biology
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6th - 10th Grade
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Easy

Olivia Brooks
Used 4+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
96%
98%
99.7%
97.9%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is carbon considered the backbone of most biological molecules?
It is similar to silicon.
It can form a variety of bonds due to its 4 valence electrons.
It is the most abundant element on Earth.
It is found in water.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which element is essential for acid-base behavior in biochemical reactions?
Hydrogen
Nitrogen
Oxygen
Carbon
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary role of nitrogen in DNA?
It makes up the nitrogenous bases.
It is involved in oxidizing reactions.
It is found in water.
It forms the backbone of DNA.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which element is found in the backbone of DNA and in ATP?
Calcium
Phosphorus
Iron
Sulfur
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percentage of the human body is made up of oxygen by mass?
18%
3%
65%
10%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which two amino acids contain sulfur?
Serine and Threonine
Lysine and Arginine
Glycine and Alanine
Cysteine and Methionine
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