1. Evolution is biology's overarching theme because evolution: all of
the an- swers are correct
- explains the unity and diversity of life
- explains how organisms become adapted to their environment through
differential reproductive success of varying individuals
- explains why distantly related organisms sometimes resemble each other
2. A cell lacking which of the following structures is most likely
to be a prokaryote?: Nuclear membrane
3. Which of the following types of cells use deoxyribonucleic acid
(DNA) as their genetic material but do not have their DNA encased
within a nuclear envelope?: archaean
4. Apple on tree ripens ripe apple produces ethylene ethylene signals
neigh- boring apples to ripen neighbor apples produce more ethylene
more apples ripen. The above process is an example of which of the
following?: positive feedback regulation
5. Which of the following properties or processes do we associate with
living things?: all of the answers are correct
- reproduction
- responding to the
environment growth and
development
- evolutionary adaptations
6. Which of these provides evidence of the common ancestry of all
living things?: near universality of the genetic code
7. Which of the following statements best distinguishes hypotheses
from theories in science?: hypotheses are usually relatively narrow in
scope, theories have broad explanatory power
8. Which branch of biology is concerned with the naming and
classifying of organisms?: taxonomy
9. Following a scientific method, which of the following is the correct
order of steps?: Observation ’ Hypothesis ’ Experiment ’ Analysis ’ Conclusio
’ Communicate results
10. Use the information in the graph to answer the following question.:
What is the impact of plowing soil on the number of earthworms?
11. Which of the following best describes a controlled experiment?: An
exper- iment includes at least two groups, one of which does not receive
the experimental treatment
12. All the organisms on your campus make up .: a community
13. Which of the following are compounds?: H2O and CH4, but not O2
1/
6
, 14. Atoms have no electric charge because they have .: an
equal number of protons and electrons
15. Which of the following is true of oxygen that has 8 protons, 8
neutrons, and 8 electrons?: It has an atomic number of 8.
16. Which of the following best explain why argon, which is a noble
gas, does not react with other elements. Noble gases .: have valence
electron shells that are completely full
17. Molybdenum has an atomic number of 42. Several common isotopes
exist, with mass numbers from 92-100. Based on this information,
which of the following is also true of molybdenum?: Molybdenum
atoms can have between 50 and 58 neutrons.
18. An ion that consists of 7 protons, 6 neutrons, and 11 electrons
has a net charge of .: 4-
19. Which of the following has the smallest total mass?: two electrons
20. To find out the number of neutrons in an atom, we need to
know the following.: atomic mass and atomic number
21. Which of the following models of atom electron shells represents an
atom that is most likely to form a cation with a charge of +1?: 1 - 2
- 1
22. Nitrogen (N) is more electronegative than hydrogen (H). Which of
the following is a correct statement about the atoms in ammonia
(NH3)?: Each hydrogen atom has a partial positive charge; the nitrogen atom
has a partial negative charge.
23. A covalent bond is likely to be polar under which of the following
condi- tions?: one of the atoms sharing electrons is more electronegative
than the other atom
24. Which of the following types of bond is broken when water
evaporates?: -
hydrogen bonds
25. If an atom has a charge of +1, which of the following must be
true?: It has one more proton than it does electrons.
26. What kind of bond is formed between the two hydrogen atoms
and the single oxygen atom?: polar covalent bonds
27. How are the hydrogen bonds formed between water molecules?: by
the attraction between the positive end of one water molecule with the
negative end of the other
28. When carbon dioxide in the atmosphere dissolves with the raindrops,
what is the expected change in pH of the raindrops?: slightly acidic
29. What kind of bonds are responsible for the unique cohesion,
2/
6
the an- swers are correct
- explains the unity and diversity of life
- explains how organisms become adapted to their environment through
differential reproductive success of varying individuals
- explains why distantly related organisms sometimes resemble each other
2. A cell lacking which of the following structures is most likely
to be a prokaryote?: Nuclear membrane
3. Which of the following types of cells use deoxyribonucleic acid
(DNA) as their genetic material but do not have their DNA encased
within a nuclear envelope?: archaean
4. Apple on tree ripens ripe apple produces ethylene ethylene signals
neigh- boring apples to ripen neighbor apples produce more ethylene
more apples ripen. The above process is an example of which of the
following?: positive feedback regulation
5. Which of the following properties or processes do we associate with
living things?: all of the answers are correct
- reproduction
- responding to the
environment growth and
development
- evolutionary adaptations
6. Which of these provides evidence of the common ancestry of all
living things?: near universality of the genetic code
7. Which of the following statements best distinguishes hypotheses
from theories in science?: hypotheses are usually relatively narrow in
scope, theories have broad explanatory power
8. Which branch of biology is concerned with the naming and
classifying of organisms?: taxonomy
9. Following a scientific method, which of the following is the correct
order of steps?: Observation ’ Hypothesis ’ Experiment ’ Analysis ’ Conclusio
’ Communicate results
10. Use the information in the graph to answer the following question.:
What is the impact of plowing soil on the number of earthworms?
11. Which of the following best describes a controlled experiment?: An
exper- iment includes at least two groups, one of which does not receive
the experimental treatment
12. All the organisms on your campus make up .: a community
13. Which of the following are compounds?: H2O and CH4, but not O2
1/
6
, 14. Atoms have no electric charge because they have .: an
equal number of protons and electrons
15. Which of the following is true of oxygen that has 8 protons, 8
neutrons, and 8 electrons?: It has an atomic number of 8.
16. Which of the following best explain why argon, which is a noble
gas, does not react with other elements. Noble gases .: have valence
electron shells that are completely full
17. Molybdenum has an atomic number of 42. Several common isotopes
exist, with mass numbers from 92-100. Based on this information,
which of the following is also true of molybdenum?: Molybdenum
atoms can have between 50 and 58 neutrons.
18. An ion that consists of 7 protons, 6 neutrons, and 11 electrons
has a net charge of .: 4-
19. Which of the following has the smallest total mass?: two electrons
20. To find out the number of neutrons in an atom, we need to
know the following.: atomic mass and atomic number
21. Which of the following models of atom electron shells represents an
atom that is most likely to form a cation with a charge of +1?: 1 - 2
- 1
22. Nitrogen (N) is more electronegative than hydrogen (H). Which of
the following is a correct statement about the atoms in ammonia
(NH3)?: Each hydrogen atom has a partial positive charge; the nitrogen atom
has a partial negative charge.
23. A covalent bond is likely to be polar under which of the following
condi- tions?: one of the atoms sharing electrons is more electronegative
than the other atom
24. Which of the following types of bond is broken when water
evaporates?: -
hydrogen bonds
25. If an atom has a charge of +1, which of the following must be
true?: It has one more proton than it does electrons.
26. What kind of bond is formed between the two hydrogen atoms
and the single oxygen atom?: polar covalent bonds
27. How are the hydrogen bonds formed between water molecules?: by
the attraction between the positive end of one water molecule with the
negative end of the other
28. When carbon dioxide in the atmosphere dissolves with the raindrops,
what is the expected change in pH of the raindrops?: slightly acidic
29. What kind of bonds are responsible for the unique cohesion,
2/
6
