Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Unified Science Practice (cell Transport, Bonding, Periodic Trends)
Test Description: Practice
Instructions: Answer all questions to get your test result.
1) A freshwater plant is placed in a container of saltwater. What will most likely happen to the cells of the plant?
A
They will shrink because water will move out of them.
B
They will shrink because salt will move out of them.
C
They will swell because water will move into them.
D
They will swell because salt will move into them.
2) Which would be the best evidence that a cell is using active transport to move a substance across its cell membrane?
A
Substances are moving rapidly across the cell membrane.
B
Substances are moving through channels in the cell membrane.
C
ATP is being rapidly consumed near the cellular membrane.
D
Substances are moving from high to low concentrations.
3) What is (are) the main difference(s) between passive transport and active transport?
A
Active transport requires cellular energy for substances to cross the cell membrane; passive transport does not.
B
Active transport works against gravity (for example, upwards from the roots of a tree); passive transport works with gravity
C
Passive transport occurs primarily in single-cell organisms; active transport occurs primarily in multi-cellular organisms.
D
Passive transport does not require any cellular proteins; active transport requires cellular proteins.
4) All of the following are types of passive transport except
A
facilitated diffusion
B
osmosis
C
endocytosis
D
diffusion
5) What is the role of ATP in the process of active transport?
A
It lengthens the fatty acid chains in the membrane.
B
It provides the energy to transport the cell in its environment.
C
It weakens the membrane, allowing molecules to pass through more easily.
D
It provides the energy that cells need to move molecules against a concentration gradient.
6) Which of the following is an example of osmosis?
A
A single-celled organism uses osmosis to take in food particles.
B
Intestinal cells use osmosis to absorb nutrients from food
C
The human body uses osmosis to move antibodies out of cells.
D
A plant's roots use osmosis to absorb water from the soil.
7) Which statement is true regarding active transport?
A
Substances can only move across the cell membrane if they are water soluble.
B
Substances do not require additional energy to move in and out of cells.
C
Substances can only move into cells, not out of cells.
D
Substances can move from areas of low concentration to areas of high concentration
8) In general, in what direction does a diffusing substance move?
A
down its concentration gradient
B
in the opposite direction than it would normally move
C
up its concentration gradient
D
it depends on the substance being diffused
9) Why might heating an enzyme slow the rate at which the rate occurs
A
it changes the substrate
B
it changes its shape
C
the enzyme is specific
D
it kills the enzyme
10) Enzymes influence chemical reactions in living systems by
A
becoming apart of the product after the reactions occur
B
absorbing water during synthesis and digestion
C
combining with atmospheric gases
D
affecting the rate at which reactions occur
11) The valence shell of a neutral atom loses two electrons. Which of the following ions might result?
A
N2-
B
Mg2+
C
K+
D
O2-
12) Which of the following elements is a nonmetal?
A
Mn
B
Li
C
Se
D
Ba
13) Which best explains why water dissolves most salts?
A
Water is the same density as salts
B
Water has a different density than most salts
C
Water is polar and salts form ions in solution
D
Water is nonpolar and salts form ions in solution
14) Which element is an alkaline earth metal?
A
Ne
B
Ca
C
Li
D
O
15) Which type of bond is responsible for atoms of pure gold to be bonded togther?
A
metallic
B
polar
C
covalent
D
ionic
16) Carbon atoms can link themselves together into long chains and rings to form a vast number of highly complicated molecules. Which of the following statements BEST explains why carbon atoms behave this way?
A
They easily combine with atoms of oxygen.
B
They easily form covalent bonds with each other.
C
They easily become highly charged ions.
D
They easily form ionic bonds with each other.
17) Aluminum oxide, Al2O3, is produced by combining Al3+ and O2- particles. What type of compound has been formed?
A
metallic
B
polar
C
ionic
D
covalent
18) Which group in the periodic table forms ions that have a valence of 1+?
A
16
B
8
C
1
D
2
19) Which of the following atoms has the largest atomic radius?
A
iodine (I)
B
barium (Ba)
C
magnesium (Mg)
D
chlorine (Cl)
20) Which of the following atoms has six valence electrons?
A
sulfur (S)
B
silicon (Si)
C
sodium (Na)
D
magnesium (Mg)
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?