stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Fall 23 The Science of Biology (Ch1-2) & Biochem (Ch3) Flashcards | StudBud
Explore
/
Fall 23 The Science of Biology (Ch1-2) & Biochem (Ch3)
Fall 23 The Science of Biology (Ch1-2) & Biochem (Ch3)
40 terms
·
StudBud Administration
·
60 plays
Imported from external platform
Flashcards
40 cards
F
Practice quiz
P
Host live
L
Questions
40
Answers
1
Which of these molecular structures could be found in a lipid but not a carbohydrate, protein, or nucleic acid?
a long chain of carbon, oxygen & nitrogen atoms
an amino group and a carboxylic group bonded together
a long chain made only of carbon & hydrogen atoms
a phosphate group joined to a chain of carbon atoms
2
Dr. Smith knows the researcher who wrote paper A, but not B. If he says paper A has more merit, he could be exhibiting
bias
observation
skepticism
inference
3
A controlled experiment is one that must
be supervised by an experienced scientist.
keep both the dependent and the independent variableconstant.
proceed very slowly.
include experimental and control groups.
4
Which 2 types of particles are present in equal numbers in an atom but not in an ion?
protons & electrons
protons & inner-shell electrons
inner-shell electrons & outer-shell electrons
protons & neutrons
5
A friend says, "Evolution is just a theory, I'll believe it when it's a law." What is the best scientific reply?
Science always finds the right answer & the answers never change.
Scientific theories do not become scientific laws.
Scientists trust each other about experimental results, and so should we.
He is right not to trust science since it is based on research & evidence.
6
Which of the following statements about science is accurate?
Science deals with the investigation of supernatural events & creatures.
Science is when you find evidence that supports what you already think.
Science is a list of beliefs & facts that is constant & unchanging.
Science involves collecting & organizing data about the natural world.
7
What is the effect of an enzyme on the energy of a chemical reaction?
Enzymes increase the free energy of the products.
Enzymes decrease the difference in energy between products & reactants.
Enzymes decrease the free energy of the reactants.
Enzymes decrease the activation energy of the reaction.
8
Dr. Sanchez's team discovers a new star. They write a paper about it & submit it to a journal. What is this process?
developing a hypothesis
peer review
data collection
developing a theory
9
In the metric system, what do the kilogram, kilometer & kilocalorie have in common?
All are units 1 million times larger than the base unit.
All measure the same type of quantity; they are interchangeable.
All are units 1,000 times larger than the base unit.
All are units 1,000 times smaller than the base unit.
10
Jane Goodall studied chimpanzees by sitting quietly & taking notes about their behavior. What was she doing?
watching a control group
testing variables
making observations
applying a stimulus
11
Which is true about theories? (Check all that apply.)
Theories are dynamic & complex, and constantly subject to revision.
Theories are broad & useful explanations for how the world works.
Theories may become scientific law.
Theories are accepted as absolute truth in the scientific community.
12
Na & Cl react to form NaCl. How would you predict the properties of NaCl compare to those of its constituent elements?
identical in all ways
an average or mixture of the 2 sets of properties
similar in most ways but not identical
very different
13
What allows the three atoms in a water molecule to stay together?
covalent bonds formed by shared electrons between atoms
ionic bonds formed by electrons that transfer between atoms
hydrogen bonds formed only by the electrons of the hydrogen atoms
covalent bonds formed by electrons that transfer between atoms
14
What are the monomers that make up proteins?
lipids
nucleic acids
amino acids
monosaccharides
15
What event changes an atom into an ion?
the gain or loss of one or more neutrons
a chemical reaction that forms a molecule
the gain or loss of one or more electrons
the sharing of electrons with another atom
16
Which of the following types of bonds hold together 2 carbon atoms that are bonded together?
hydrogen
polar
covalent
ionic
17
A student drew this model of an atom. What change would improve its accuracy?
Move the protons & neutrons to a small space in the center.
Move the protons & electrons to a small space in the center.
Move all of the particles so that they are evenly spaced.
Move each neutron so it is next to a proton.
18
Household bleach has a pH between 12 & 13. Which of the following best describes bleach solution?
The solution is a buffer & reacts with solutions with high H+ concentration
The solution is acidic, meaning it has more H+ ions than OH- ions.
The solution is neutral, meaning it has an equal number of H+ and OH- ions.
The solution is basic, meaning it has fewer H+ ions than OH- ions.
19
Which of the following does not contain anecdotal evidence?
In a peer-reviewed study, people hadfewer flu symptoms after eating garlic
All Mariana’s friends are skinny & drink celery juice every day.
A celebrity tweets about changes in their skin from going gluten-free.
Jenna started adding garlic to her meals and now she never gets sick.
20
In an experiment to test a new medicine, group A takes the medicine and group B takes an empty pill. What is group B?
Group B is the dependent variable.
Group B is the experimental group.
Group B is the control group.
Group B is the independent variable.
21
Which type of macromolecule has the function of storing & transmitting hereditary or genetic information?
nucleic acid
lipid
carbohydrate
protein
22
Which of the following is an example of secondary literature?
Los Angeles Times
Instagram
The Book of Mormon
Journal of Medical Microbiology
23
What's the independent variable?
plant without music
music volume
amount of plant growth
type of music
24
Testing hypotheses often involves designing experiments. Which factor is observed & measured in an experiment?
control group
dependent variable
experimental group
independent variable
25
A & B are 2 isotopes of sodium. In isotope A, each atom has 11 protons, 12 neutrons & 11 electrons. Which could be B?
11 protons, 13 neutrons, 11 electrons
12 protons, 12 neutrons, 11 electrons
11 protons, 12 neutrons, 12 electrons
11 protons, 12 neutrons, 10 electrons
26
What property of a water molecule allows hydrogen bonds to form among adjacent molecules?
the ionic bonds that form after the molecule separates into OH- and H+
the strong covalent bonds that hold the oxygen atom to each hydrogen atom
the polarity, which involves a slightly negative O and slightly positive H
the small size of the 2 hydrogen atoms compared to the oxygen atom
27
Which 2 statements provide evidence to support the classification of viruses as nonliving?
Viruses do not respond to changes in the environment around them.
Viruses contain genetic information in the form of nucleic acids.
Viruses are made up of proteins, nucleic acids & sometimes lipids.
Viruses must infect living cells in order to reproduce.
28
Which of the following studies is least likely to be biased?
A study funded by Coke: found drinking soda daily doesn't lead to diabetes.
A grad student used an NIH grant to find: ginger tea helps with nausea.
Study funded by drug company: their drug has fewer side effects than other.
Wife's study finds turmeric is healthy, confirms the results of husband.
29
Human blood has a pH of 7.4. How do buffers in the blood affect the pH?
Buffers are bases that cause the pH of blood to increase.
Buffers prevent small amounts of acid/base from changing the pH of blood.
Buffers are catalysts that prevent changes to the pH of blood.
Buffers are acids that cause the pH of blood to decrease.
30
“I have a theory that I failed theexam because I didn't sleep enough.” What scientific word is better than theory?
observation
theory
guess
hypothesis
31
In a chemical reaction, which event ALWAYS occurs as a reaction proceeds?
a change in total mass
the rearrangement of electrons to break or form chemical bonds
the release of energy to the environment
the absorption of energy from the environment
32
Several different amino acids join together to form a protein. How do any 2 amino acids differ from each other?
the chemical structure of the R group of the molecule
the number of amino groups in the molecule
the number of carboxyl groups in the molecule
the number of chemical bonds formed by the central carbon atom
33
What best describes the relationship between starch & glucose?
Starch is a monomer that is used to make glucose.
Starch & glucose are reactants that combine to form proteins.
Starch & glucose are reactants that combine to form nucleic acids.
Starch is a polymer made of glucose molecules.
34
After her run, Aisha felt thirsty. Thirst was her body's was of telling her she needed more water to maintain
growth
development
homeostasis
metabolism
35
Compound X increases the concentration of H+ ions. Does compound X raise or lower the pH value of the solution?
lower
raise
36
Camille noticed droopy leaves on her plant. She decided it needed to be watered. What has she done?
made an inference based on past experience & observation.
devised a controlled experiment about the effect of water on plant leaves.
calculated the probability of the plant surviving without water.
formed a hypothesis based on quantitative data.
37
Which best describes how science works?
Scientists review and revise evidence when new evidence arises.
Scientists make observations & do experiments in order to establish facts.
Scientists attempt to resolve questions of belief with scientific facts.
Scientists emphasize evidence supporting their hypothesis & ignore others.
38
If a mother chooses not to vaccinate her children, who is at risk for contracting and suffering from the disease?
any unvaccinated person with whom the children come in contact
only her children who are not vaccinated
she herself, her children, and others in her extended family
anyone with whom the children come in contact
39
Which of the following is NOT an appropriate topic to study using the scientific method?
Do women make the same amount of money for the same job as men?
Is Anne really in love with Andy?
Do Lucky Strike cigarettes contain fewer carcinogens than other brands?
Does drinking coffee raise blood pressure?
40
Which type of biomolecule includes both fats and steroids?
nucleic acids
carbohydrates
proteins
lipids
