Quiz Submissions - Quiz 2
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Question 1
When referring to pH, an example of something that is alkaline
... [Show More] includes what?
Question options:
stomach acid
baking soda
orange juice
water
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Question 2
An atom that does not contain equal numbers of protons and electrons is referred to as what?
Question options:
Carbon dating
Ion
Bond
Electron transfer
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Question 3
If an atom donates an electron, and becomes positive, another atom will accept the electron, and is negative. What is the bond these atoms will form called?
Question options:
Covalent bond
Ionic bond
van der Waals interactions
Hydrogen bond
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Question 4
Which is one of the most abundant natural biopolymers on Earth, only found in plants?
Question options:
starch
glycogen
cellulose
chitin
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Question 5
Which is an unprocessed or unrefined source of carbohydrates?
Question options:
fruit
pasta noodles
white bread
cookies
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Question 6
Which is more likely to dissolve in water?
Question options:
wax
glucose
olive oil
fat
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Question 7
Practically speaking, a buffer is the reason for what?
Question options:
Why gardens are a good hobby
Why we shouldn't eat white bread
Why water tastes different to each of us
Why we can ingest acidic substances and not die
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Question 8
What is the reason for chemical bonds between atoms?
Question options:
A vacancy in the nucleus
A full outermost shell
A full nucleus
A vacancy in the outermost shell
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It is the outermost shell that dictates the type of chemical bond that will form. Review chemical bonds in Chapter 2.
Question 9
Which type of fatty acid is a solid at room temperature?
Question options:
unsaturated fatty acid
polyunsaturated fatty acid
monounsaturated fatty acid
saturated fatty acid
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Question 10
What term describes the forelimb bones of a bird, bat, horse, whale and human?
Question options:
synapomorphy
analogous
homologous
apomorphy
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Question 11
Which assumption of cladistics is correctly stated?
Question options:
There are multiple universal last common ancestors (LUCA).
Traits remain homologous and unchanged from one state to another.
The polarity of a character state change can be determined.
Speciation can produce two to four new species.
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There are three primary assumptions of cladistics. Read more in Chapter 12.
Question 12
How has molecular systematics changed the how organisms had been classified?
Question options:
Molecular systematics has confirmed earlier classifications.
Sometimes errors are uncovered and taxa are reclassified from molecular systematics.
Morphologic homology has allowed for the calibration of a molecular clock.
Classification has reverted to the Linnean system based on molecular systematics.
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Molecular systematics uses molecular information including DNA sequencing to study the relationships between organisms. Read more in Chapter 12.
Question 13
Currently the diversity of all life on earth is contained in 3 domains which are:
Question options:
Bacteria, Animals, Plants
Family, Genus, Species
Archaea, Bacteria, Eukarya
Phylum, Class, Order
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Question 14
Which is the correct order of classification from largest group to smallest?
Question options:
Phylum, Kingdom, Domain, Class, Species, Genus, Family, Order
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
Canis, Eukarya, Chordata, Canidae, lupus, Animalia, Mammalia
Species, Genus, Family, Order, Class, Phylum, Kingdom, Domain
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Question 15
What is a diagram used to represent evolutionary relationships between taxa called?
Question options:
systematic
phylogeny
branch
clade
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Question 16
What is the scientific name of wolves in binomial nomenclature?
Question options:
Canidae Family
Mammalia
Canis lupus
Wolves and Dogs
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Question 17
What term describes the wings of insects, bats, and birds?
Question options:
apomorphy
homologous
analogous
synapomorphy
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Question 18
What is a group of closely related organisms and their common ancestor on a phylogeny?
Question options:
synapomorphy
outgroup
vertebrate
clade
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Question 19
Evolutionary change that happens on short time scales from one generation to the next within a population is called what?
Question options:
Convergent Evolution
Natural Selection
Macroevolution
Coevolution
Microevolution
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Question 20
The number of domestic dog varieties on Earth today, produced through artificial selection, is an example of what kind of evolution?
Question options:
Microevolution
Coevolution
Convergent Evolution
Macroevolution
Natural Selection
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Artificial selection generally functions on a shorter time scale. Review How Does Evolution Function at Different Scales in the Weekly Lecture Lesson.
Question 21
Which is the sole source of novel genetic variation?
Question options:
mutation
gene flow
natural selection
nonrandom mating
genetic drift
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Question 22
Which is NOT considered a component of scientific observations?
Question options:
Personal beliefs
Generation of data
Measurability
Specialized tools
Limitations
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Correct! In science, observations lead to the formation of hypotheses and must adhere to specific guidelines to be scientifically credible.
Question 23
Which of the following is considered a primary source of research?
Question options:
Magazines
Books
Dissertations
Blogs
Websites
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Correct! Primary research is considered original works that have not been interpreted or evaluated by a second party.
Question 24
Which of the following is the best scientific question for proposing a hypothesis and designing an experiment on the effect of a drug (Drug X) on decreasing blood pressure?
Question options:
Should we lower blood pressure?
Why is Drug X important to blood pressure?
Does Drug X affect blood pressure?
How does Drug X affect blood pressure readings?
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Correct! Scientific questions should be specific enough that can be measured, tested and verified.
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