Question

Which of the following are photosynthetic organisms?

	a. algae
	b. cyanobacteria
	c. plants
	d. a and c
	e. a, b, and c

2.

_____________ can directly use the energy of sunlight to make their own food, and _____________ must rely on other organisms to provide the energy they need to survive.

	a. autotrophs; heterotrophs
	b. heterotrophs; autotrophs
	c. photosynthetic organisms; autotrophs
	d. autotrophs; photosynthetic organisms
	e. heterotrophs; photosynthetic organisms

3.

What organelle(s) would a nonphotosynthetic algae need to be able to conduct photosynthesis?

	a. mitochondria
	b. nucleus
	c. chloroplast
	d. solar transformer
	e. cell membrane

4.

Why do many species of algae appear green?

	a. They fluoresce under certain conditions.
	b. The chlorophyll pigment they contain is green.
	c. The green pigment is the result of carbon fixation.
	d. They live in plant leaves, so they appear green.
	e. Algae are only green during the night when they are not conducting photosynthesis.

5.

What would happen to humans and other animals if algae, cyanobacteria, and plants were wiped out?

	a. Carbon dioxide levels would rise.
	b. Heterotrophs would not have a source of energy in autotrophs.
	c. Autotrophs would not be able to use heterotrophs as a source of energy.
	d. a and b
	e. a and c

6.

The energy of sunlight is transferred to earth surface in the form of _________.

	a. glucose
	b. photons
	c. gamma rays
	d. ions
	e. particles

7.

The energy in a cereal bar is __________ energy. The energy of a cyclist pedaling is _____________ energy.

	a. light; chemical
	b. potential; chemical
	c. chemical; kinetic
	d. potential; potential
	e. kinetic; potential

8.

Kinetic energy is best described as _____________.

	a. stored energy
	b. light energy
	c. the energy of movement
	d. heat energy
	e. any of the above, depending on the situation

9.

Each time energy is converted from one form to another, a percentage of that energy is lost as _______ or fails to be converted.

	a. water
	b. carbon dioxide
	c. combustion
	d. fuel
	e. heat

10.

The fuel used to run our cars contains _______ energy.

	a. heat
	b. kinetic
	c. potential (or chemical)
	d. friction
	e. gravitational

11.

Why are photons critical to the process of photosynthesis?

	a. Photons provide the water needed to conduct photosynthesis.
	b. Photons are needed to excite the electrons of the atoms in chlorophyll.
	c. Photons provide the electricity needed to excite the chlorophyll in the leaves.
	d. Photons cause leaves to appear green and attract sunlight.
	e. Photons provide the chlorophyll needed to conduct photosynthesis.

12.

Glucose is a product of photosynthesis. Where do the carbon atoms in glucose come from?

	a. starch
	b. cow manure
	c. molecules in air
	d. water
	e. soil

13.

Which of the following correctly describes the input (I) and output (O) of photosynthesis.

	a. I – oxygen, carbon dioxide, photons; O – glucose, water
	b. I – carbon dioxide, photons; O – glucose, water, oxygen
	c. I – glucose, water, oxygen; O – carbon dioxide, photons
	d. I – carbon dioxide, photons, water; O – oxygen, glucose
	e. I – carbon dioxide, photons, oxygen; O – water, glucose

14.

Which of the following accurately summarizes the process of photosynthesis?

	a. Chloroplasts capture sunlight, carbon dioxide is split, oxygen is released, and oxygen is used to convert captured energy into glucose.
	b. Chloroplasts capture carbon dioxide, water is split, sunlight turns carbon dioxide into oxygen, and oxygen is used to convert glucose to energy.
	c. Chloroplasts capture sunlight, water is split, oxygen is released, and carbon dioxide is used to convert oxygen to glucose.
	d. Chloroplasts capture oxygen, sunlight turns oxygen into carbon dioxide, and carbon dioxide is used to convert glucose to energy.
	e. Chloroplasts capture sunlight, water is split, oxygen is released, and carbon dioxide is used to convert chemical energy into glucose.

15.

Photosynthesis can be broken down into two basic mechanisms (photo and synthesis). Which of the following describes these two mechanisms?

	a. Photo – absorption of light; Synthesis – carbon fixation
	b. Photo – carbon fixation with light; Synthesis – absorption of carbon dioxide
	c. Photo – reliant on the pigment chlorophyll; Synthesis – reliant on the presence of water to make oxygen
	d. a and c
	e. b and c

16.

What energy source drives the carbon fixation process of photosynthesis, and where does it come from?

	a. The kinetic energy ATP made from light absorption drives carbon fixation.
	b. The chemical energy ATP made from light absorption drives carbon fixation.
	c. The chemical energy of light made from glucose drives carbon fixation.
	d. The kinetic energy of ATP made from acetate drives carbon fixation.
	e. The chemical energy ATP made from glucose drives carbon fixation.

17.

Why are energy-rich lipids from algae more useful as a fuel than energy-rich sugars and other carbohydrates produced by photosynthetic organisms such as corn and wheat?

	a. The sugars contain less chemical energy than the lipids.
	b. The sugars require an additional fermentation step to produce usable chemical energy, as alcohol.
	c. The lipids can be used directly as fuel.
	d. a and c
	e. a, b, and c

18.

Why are algae considered more valuable for biofuel than plants (such as corn)?

	a. They store extra energy mainly as oils.
	b. They are cheaper to grow.
	c. They do not require as much water.
	d. They do not require as much fertilizer.
	e. all of the above

19.

Why did searching for unique algae species open new opportunities for their use as a biofuel?

	a. It made the process more cost effective.
	b. It allowed algae to be grown in a wider range of locations.
	c. It can make the process independent of sunlight.
	d. It allowed for the use of existing forms of chemical energy.
	e. all of the above

20.

Many biofuels require arable land for their production. Which of the following would limit the production of biofuels with this in mind?

a. Arable land for corn and wheat biofuels is also required to grow food crops.

b. Arable land is not limitless.

c. Algae requires arable land for its production of biofuels.

d. a and b

e. a, b, and c

---------------------------------------------------

.

Which of the following are photosynthetic organisms?

	algae
	None of the answers are correct.
	All of the answers are correct.
	plants
	cyanobacteria

2.

_____________ can directly use the energy of sunlight to make their own food, and _____________ must rely on other organisms to provide the energy they need to survive.

	Heterotrophs; autotrophs
	Autotrophs; photosynthetic organisms
	Heterotrophs; photosynthetic organisms
	Photosynthetic organisms; autotrophs
	Autotrophs; heterotrophs

3.

Why do many species of algae appear green?

	Carbon fixation turns their tissue green.
	Algae are only green during the night when they are not conducting photosynthesis.
	They fluoresce green under sunlight.
	The chlorophyll pigment they contain is green.
	They live in plant leaves, so they appear green.

4.

The energy of sunlight exists in the form of _________.

	ions
	particles
	photons
	gamma rays
	glucose

5.

The energy in a cereal bar is __________ energy. The energy of a cyclist pedaling is _____________ energy.

	potential; chemical
	chemical; kinetic
	light; chemical
	potential; potential
	kinetic; potential

6.

Kinetic energy is best described as _____________.

	light energy
	stored energy
	the energy of movement
	None of the answers are correct.
	heat energy

7.

The fuel used to run our cars contains _______ energy.

	gravitational
	potential
	kinetic
	heat
	friction

8.

Why are photons critical to the process of photosynthesis?

	Photons provide the chlorophyll needed to conduct photosynthesis.
	Photons are needed to excite the electrons of the pigment molecules in chlorophyll.
	Photons provide the water needed to conduct photosynthesis.
	Photons provide the electricity needed to excite the chlorophyll in the leaves.
	Photons cause leaves to appear green and attract sunlight.

9.

Which of the following accurately summarizes the process of photosynthesis?

	Chloroplasts capture carbon dioxide, water is split, sunlight turns carbon dioxide into oxygen, and oxygen is used to convert glucose to energy.
	Chloroplasts capture oxygen, sunlight turns oxygen into carbon dioxide, and carbon dioxide is used to convert glucose to energy.
	Chloroplasts capture sunlight, carbon dioxide is split, oxygen is released, and oxygen is used to convert captured energy into glucose.
	Chloroplasts capture sunlight, water is split, oxygen is released, and carbon dioxide is used to convert oxygen to glucose.
	Chloroplasts capture sunlight, water is split, oxygen is released, and carbon dioxide is used to convert chemical energy into glucose.

10.

What is driving our search for alternative fuel sources?

	increasing demand for fuels
	the dwindling fossil fuel resources
	None of the answers are correct.
	All of the answers are correct.
	global warming from carbon dioxide emissions

Answer 1

1) The correct answer is option E that is A, B and C all are correct. Algae, cyanobacteria and plants have chloroplast to carry photosynthesis.

2) The correct answer is option A that is autotrophs and heterotrophs because autotrophsake their own food in presence of sunlight and heterotrophs need to depend on other organism to get the energy they need to survive.

3) The correct answer is option C that is chloroplast because it is the organelle that is required to carry photosynthesis.

4) The correct answer is option B that is the chlorophyll pigment they contain is green and that is why they appear Green