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AP BIO CHAPTER 1-3 (CAMPBELL) Flashcards | StudBud
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AP BIO CHAPTER 1-3 (CAMPBELL)
AP BIO CHAPTER 1-3 (CAMPBELL)
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Test preparation for AP BIO test Chapters 1-3 for Campbell (VHS) #science #biology #grade_09
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1
Electrons are held in an atom by attraction to what particle or location?
Attraction to the lowest electron shell
Attraction to the other electrons in the atom
Attraction to the positively charged protons in the nucleus
Attraction to the magnetic neutrons in the nucleu
2
To fill the valence shell, an electrically neutral, unbonded atom with atomic number 8 must add ____ electrons.
1
3
8
2
3
An ionic bonds are formed when positively & negatively charged ions are held together by electrostatic forces.
False
True
4
Which of the following properties or processes is not associated with all living things?
responding to the environment
evolutionary adaptation
movement
energy processing
5
Which of these refers to atoms with the same atomic number but different atomic masses?
isotopes
radioactive atoms
isomers
ions
6
In Pasteur's experiment to test the hypothesis of spontaneous generation, why did he boil the broth in both flasks?
To kill any existing organisms in the broth
To provide nutrients to stimulate the growth of microorganisms
To expose the broth to a source of organisms
To attract dust particles to each flask
7
This atom can form up to ____ single covalent bond(s).
3
1
4
2
8
What type of bond is joining the two hydrogen atoms?
ionic
hydrogen
covalent
hydrophobic
9
Positive feedback- is common form of regulation in which accumulation of an end product of a process slows that process
False
True
10
Covalent bonds hold atoms together because they
fill shells without giving atoms much charge.
do all of the above.
bring electrons closer to neutrons
use forces between nuclei as well as forces between electrons.
11
Competition is central to the theory of natural selection. Why does competition occur?
Males must defend their territories.
Organisms typically produce too many offspring, and resources are limited
Organisms are naturally antagonistic.
Females must choose among possible mates.
12
Radioactive isotopes can be used in studies of metabolic pathways because
they are more reactive.
location or quantity can be experimentally determined due to radioactivity.
r extra neutrons produce different colors that can be traced thru the body
their half-life allows a researcher to time an experiment.
13
Atoms whose outer electron shells contain eight electrons tend to be stable & chemically nonreactive.
True
False
14
Which of the following statements is not true of scientific experiments?
Yields useful results regardless if the hypothesis is supported or rejected
All of the above are true.
They must occur under carefully controlled conditions found in a laboratory
They must be well documented.
15
Which of the following attributes is common to both prokaryotic cells and eukaryotic cells?
generally about the same size
the use of proteins as information storage molecules
the use of DNA as the information storage molecule
membrane-enclosed organelles
16
Changing the number of _______ would change an atom into an atom of a different element.
bonds formed by an atom
neutrons in an atom
electrons circling the nucleus of an atom
protons in an atom
17
An atom's atomic number is 7. Its valence is most likely
3
1
4
2
18
How does DNA (deoxyribonucleic acid) encode information?
in the number of each different nucleotide.
in the sequence of nucleotides.
DNA molecule has many amino acids joined together to form a protein
in the different shapes of the DNA molecules.
19
What is the correct order for the hierarchy of biological organization from the least to the most complex?
organism, community, biosphere, molecule, tissue, organ
molecule, cell, organ system, population, ecosystem, biosphere
organelle, tissue, biosphere, ecosystem, population, organism
cell, community, population, organ system, molecule, organelle
20
Which of the following variables did Pasteur change in his experiment to test the hypothesis of spontaneous generation?
The length of time that the flasks were allowed to sit before
The broth used in each flask
The length of time that the broth was boiled
The shape of the flask
21
Which of the following statements is true about chemical nutrients in an ecosystem?
They recycle within the ecosystem, being constantly reused
They depend on sunlight as their source
They flow through the system, losing some nutrients in the process.
They exit the ecosystem in the form of heat.
