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Ch 6 3 Of 3
Test Description: Water, ch 6 3 of 3
Instructions: Answer all questions to get your test result.
1) Iron and trace elements in marine life are essential for
A
constructing specialized proteins, such as hemoglobin and enzymes
B
sinking to the sea floor
2) ____ transport is the movement of materials through diffusion, ______ transport requires energy to move materials from areas of low concentration to areas of h igh concentration
A
Passive, Acitive
B
Active, Passive
3) ___________________ can control the water concentration of their cells. The water concentration in the cells of _______________ changes with the salinity of the surrounding seawater
A
osmoregulators, osmoconformers
B
osmoconformers, osmoregulators
4) How are water molecules bound to each other?
A
hydrogen bonds between water molecules
B
hydrogen - oxygen bonds in a single water molecules
5) How would Earth be different if water was a non polar molecule
A
All of the answers listed
B
Climate would be colder
C
Ice would not act as an insulator for the water below
D
Ice would not float, bodies of water would freeze solid
6) What is diffusion?
A
movement of molecules from area of low concentration to area of high concentration
B
movement of molecules from area of high concentration to area of low concentration
7) What is the average pH of sea water
A
2
B
4
C
11
D
8
8) What is hyper tonic?
A
less molecules of solute
B
more molecules of solute
C
same number of molecules as solute
9) What is osmosis
A
movement of water through a semipermeable membrane into an area of lower concentration of solute molecule
B
movement of water through a semipermeable membrane into an area of equal concentration of solute molecule
C
movement of water through a semipermeable membrane into an area of higher concentration of solute molecule
10) What is the name of our textbook
A
Life of Pi
B
Life on an Ocean Planet
C
Life in the Sea
D
Life in the Water
*select an answer for all questions
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