Introduction to cell biology Flashcards
1
Q
What are the most abundant atoms in the universe?
A
- Hydrogen
- Helium
2
Q
When did the atoms of the universe form?
A
About 13.7 billion years ago
3
Q
What occured when the atoms formed?
A
Creation of light, especially red and infrared light
4
Q
Where in our current universe is now the place where the light that surrounds us was originally formed?
A
46 billion light years away
5
Q
How many of the elements on the periodic table of the elements occur naturally?
A
94
6
Q
What is a chemical reaction?
A
modification of a molecule (most often: change of position of electrons in the molecule)
7
Q
Why do living entities use chemical reactions/regulate chemical reactions?
A
- grow
- accomplish tasks
- manipulate the environment
8
Q
A
9
Q
A
10
Q
A
