EVR1001 Exam #1 Questions And Answers
Latest Update 2026
EMAIL ME FOR MORE INFO :
1. The entire area of land that a river drains is called its __________. -
Answer watershed
2. Which one of the following describes a positive feedback loop? -
Answer Positive feedback loops are more common in natural systems
altered by human actions.
3. If the pond above is chemically treated to raise the pH to 7.0
________. - Answer The pond is now pH neutral and it has more
hydrogen ions than at pH 7.5
4.________ are composed of amino acids. - Answer Proteins
,5. An example of a positive feedback loop ________. - Answer is
melting arctic snow exposing dark surfaces that heat up and cause
further melting
6. Forming the cell walls of stems, leaves, and roots, what compound is
the primary structural constituent of plant tissues? - Answer
Cellulose
7. Electrically charged atoms or combinations of atoms are called
________. - Answer ions
8. How do organic compounds differ from inorganic compounds? -
Answer Organic compounds consist of carbon atoms joined by
covalent bonds and may contain other elements, such as nitrogen,
oxygen, sulfur, and phosphorus. Inorganic compounds lack carbon-
carbon bonds.
9. Carbon has an atomic number of 6. If an uncharged carbon atom has
a mass number of 14, which of the following is true? - Answer This
atom has 6 protons , 8 neutrons, and 6 electrons
10. Could 235U (uranium-235) decay into an isotope of 239Np
(neptunium-239)? - Answer NO, bc as uranium decays, it well shed
subatomic particles, not add them
,11. Which of the statements below best describes energy? - Answer
Energy provides the ability to change the position, composition, or the
temperature of matter
12. Which of the following are the reactants (ingredients) needed for
photosynthesis to occur? - Answer carbon dioxide , water, and
sunlight
13. Which of the following best describes the role of autotrophs in
ecosystems? - Answer They produce their own organic molecules,
which can be broken down for Energy
14. Which of the following is an example of potential energy? -
Answer the energy held in bonds between atoms
15. The transitional zone between ecosystems is called a(n)______. -
Answer ecotone
16. Ecosystems that rapidly convert solar energy to biomass
__________. - Answer are said to have high primary productivity
, 17. How do energy and matter move through an ecosystem? - Answer
Energy unidirectionally flows through an ecosystem, whereas matter
generally cycles within an ecosystem
18. A(n) __________ is an example of an ecosystem with high primary
productivity, while a __________ is an example of an ecosystem with
low primary productivity. - Answer algal bed ; desert
19. During the light reactions of photosynthesis, the solar energy
absorbed by chlorophyll is used to ________. - Answer Both A and C
20. A leaf falls from a tree and lands on the ground. Through time, bugs
and bacteria consume the leaf. Which of the following statements
regarding this scenario is true? - Answer The nutrients from the leaf
have been recycled and released back into the soil
21. Geographic Information Systems (GIS) is ________. - Answer
helping conservation biologists study habitats and study biodiversity
22. The greatest source of both nitrogen and phosphorus entering
Chesapeake Bay is ________. - Answer agriculture
Latest Update 2026
EMAIL ME FOR MORE INFO :
1. The entire area of land that a river drains is called its __________. -
Answer watershed
2. Which one of the following describes a positive feedback loop? -
Answer Positive feedback loops are more common in natural systems
altered by human actions.
3. If the pond above is chemically treated to raise the pH to 7.0
________. - Answer The pond is now pH neutral and it has more
hydrogen ions than at pH 7.5
4.________ are composed of amino acids. - Answer Proteins
,5. An example of a positive feedback loop ________. - Answer is
melting arctic snow exposing dark surfaces that heat up and cause
further melting
6. Forming the cell walls of stems, leaves, and roots, what compound is
the primary structural constituent of plant tissues? - Answer
Cellulose
7. Electrically charged atoms or combinations of atoms are called
________. - Answer ions
8. How do organic compounds differ from inorganic compounds? -
Answer Organic compounds consist of carbon atoms joined by
covalent bonds and may contain other elements, such as nitrogen,
oxygen, sulfur, and phosphorus. Inorganic compounds lack carbon-
carbon bonds.
9. Carbon has an atomic number of 6. If an uncharged carbon atom has
a mass number of 14, which of the following is true? - Answer This
atom has 6 protons , 8 neutrons, and 6 electrons
10. Could 235U (uranium-235) decay into an isotope of 239Np
(neptunium-239)? - Answer NO, bc as uranium decays, it well shed
subatomic particles, not add them
,11. Which of the statements below best describes energy? - Answer
Energy provides the ability to change the position, composition, or the
temperature of matter
12. Which of the following are the reactants (ingredients) needed for
photosynthesis to occur? - Answer carbon dioxide , water, and
sunlight
13. Which of the following best describes the role of autotrophs in
ecosystems? - Answer They produce their own organic molecules,
which can be broken down for Energy
14. Which of the following is an example of potential energy? -
Answer the energy held in bonds between atoms
15. The transitional zone between ecosystems is called a(n)______. -
Answer ecotone
16. Ecosystems that rapidly convert solar energy to biomass
__________. - Answer are said to have high primary productivity
, 17. How do energy and matter move through an ecosystem? - Answer
Energy unidirectionally flows through an ecosystem, whereas matter
generally cycles within an ecosystem
18. A(n) __________ is an example of an ecosystem with high primary
productivity, while a __________ is an example of an ecosystem with
low primary productivity. - Answer algal bed ; desert
19. During the light reactions of photosynthesis, the solar energy
absorbed by chlorophyll is used to ________. - Answer Both A and C
20. A leaf falls from a tree and lands on the ground. Through time, bugs
and bacteria consume the leaf. Which of the following statements
regarding this scenario is true? - Answer The nutrients from the leaf
have been recycled and released back into the soil
21. Geographic Information Systems (GIS) is ________. - Answer
helping conservation biologists study habitats and study biodiversity
22. The greatest source of both nitrogen and phosphorus entering
Chesapeake Bay is ________. - Answer agriculture
