Name: ______________
Section: _____________
Energy, Matter, Organization Unit Test
1) What do Eukaryotes have that Prokaryotes do not? (4 points)
2) Which of the following is a primary function of carbohydrates? (3 points)
a) storage of energy
b) transmission of genetic material
c) acceleration of chemical reactions
d) transport of molecules across membranes
3) Which cellular organelle is primarily in charge of creating energy: (3 points)
a) the ribosome
b) the nucleus
c) the mitochondria
d) the golgi apparatus
4) Studies of brain cells and fat cells show that brain cells have MORE mitochondria than fat cells.
A biologist would most likely infer that brain tissue: (3 points)
a)
b)
c)
d)
does not require energy
has energy requirements equal to those of fat tissue
requires less energy than fat tissue
requires more energy than fat tissue
5) What is the only natural process that can remove CO2 from the atmosphere? (3 points)
6) When animal cells break down food molecules, energy is __________. (3 points)
a) released all at once
b) released entirely as heat
c) stored for quick use as ATP
d) stored for quick use as glucose
7) In which of the following ways are photosynthesis and cellular respiration alike? (3 points)
a) both processes produce glucose
b) both processes consume carbon dioxide
c) both processes take place in chloroplasts
d) both processes involve energy transformations
8) Carbon from carbon dioxide found in the atmosphere becomes incorporated into living things
through __________. (3 points)
a) photosynthesis in plants
b) burning fossil fuels
c) respiration in animals
d) all of these
9) What kind of molecule is structure A? (3 points)
a) an amino acid
b) a lipid
c) a carbohydrate
d) the ribosome
10) What macromolecule is found in breads, pasta, and vegetables: (3 points)
a) lipids
b) proteins
c) carbohydrates
d) nucleic acids
11) Where in the leaf cell is carbon dioxide absorbed? (3 points)
a) the nucleus
b) the vacuole
c) the chloroplasts
d) the mitochondria
12) One immediate cause of a decrease in the rate of photosynthesis is a reduction in the
availability of: (3 points)
a) carbon dioxide
b) carbon monoxide
c) hydrogen
d) nitrogen
13) What is the appropriate term for a carnivore? (3 points)
a)
b)
c)
d)
autotroph
primary consumer
decomposer
heterotroph
14) Eating a sweet potato provides energy for human metabolic processes. The original source of
this energy is the energy: (3 points)
a) in protein molecules stored within the potato
b) from starch molecules absorbed by the potato plant
c) from the sun that is made available by photosynthesis
d) in vitamins found in the minerals found in soil
15) As energy flows through ecosystems, it eventually: (3 points)
a) dissipates as heat and becomes unavailable for use by living things
b) is destroyed
c) is recycled by decomposers and incorporated back into living things
d) becomes matter
16) A fat molecule belongs to which category of organic macromolecules? (3 points)
a) proteins
b) lipids
c) nucleic acids
d) carbohydrates
17) Draw or write the 3 steps of the water cycle: (5 points)
18) The diagrams below represent two different cells and some of their parts. The diagrams are
not drawn to scale.
a) Label the nucleus in BOTH cells. [1 point]
b) Identify the organelle in cell B that is the site of cellular respiration: [1 point]
c) Identify the organelle labeled X in cell B (the small dot): [1 point]
d) What is the function of the organelle labeled X (the small dot)? [1 point]
e) Which cell is a plant cell and which is an animal cell? [1 point]
19) Which of the following is NOT true about the nitrogen cycle? (3 points)
a) the air we breathe is mostly nitrogen
b) plants thrive on the nitrogen in the atmosphere, but cannot access the nitrogen in soil
c) nitrogen is put into the ground by lightning
d) human and animal waste contains nitrogen
20) In the diagram of a cell to the left, which
number indicates the structure involved in aerobic
cellular respiration? (3 points)
a)
b)
c)
d)
1
2
3
4
21) Based on the energy pyramid shown and on your knowledge of biology, in which level will you
only primary consumers? (3 points)
a) A
b) B
c) C
d) D
22) A biologist uses a light microscope to observe a cell. She concludes that the cell is from a
plant. What are two observations the biologist may have made?
a) ______________________________________________________________________[1 point]
b) ______________________________________________________________________[1 point]
23) Most of the mass of a plant originates from __________. (3 points)
a) nitrogen
b) oxygen
c) carbon dioxide
d) soil nutrients
24) What is true during cellular respiration? (3 points)
a) necessary nutrients are circulated through the body.
b) hydrogen is used to synthesize glucose.
c) metabolic wastes are absorbed.
d) chemical energy in glucose molecules is converted into ATP for use in the cell.
25) An ecosystem requires a: (3 points)
a) constant temperature
b) greater number of herbivores than producers
c) cycling of materials between organisms and their environment
d) soil that is acidic
26) Which organism has the most biomass on Earth? (3 points)
a) frogs
b) polar bears
c) cows
d) plankton
27) A student places Elodea plants and snails into a test tube and closes it off with a rubber
stopper. As a result of biological processes such as photosynthesis and cellular respiration, the
number of carbon atoms inside the test tube will: (3 points)
a) increase
b) decrease
c) stay the same
d) decrease to zero
28) Which sequence best represents the flow of
energy in the cartoon shown? (3 points)
a) prey  predator
b) host  parasite
c) producer  herbivore
d) autotroph  carnivore
29) Explain what happens when you exercise. (6 points)
Include in your response:
The inputs and outputs of cellular respiration
The general flow of energy through an ecosystem (trophic levels)
Anything else you remember
30) Explain what happens when plants photosynthesize (6 points)
Include in your response:
The inputs and outputs of photosynthesis
The general flow of energy through an ecosystem (trophic levels)
Anything else you remember