3. The diagram below represents the distribution of some molecules inside and outside of a cell over time.
Cell
Which factor prevented the
protein molecules from moving
out of the cell?
Time
o
1. temperature
2. pH
D
Before
After
3. molecule size
4. molecule concentration
Key
O Water
Oxygen
Protein

the answer is definitely c.

the dependant variable is spilled water

the independent is the heat

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.