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Biology Exam 1 Flashcards | StudBud
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Biology Exam 1
Biology Exam 1
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Using this quiz to study for my collewge level biology class!
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Questions
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Answers
1
Which four elements make up the majority of living cells
Zinc, copper, iodine, flourine
Carbon, hydrogen, oxygen, nitrogen
Phosphorus, sulfur, magnesium, chlorine
calcium, iron, sodium, potassium
2
A buffer helps maintain a stable pH by neutralizing large amounts of acids or bases?
True
False
3
An _______ is the fundamental unit of matter.
Organelle
Molecule
Organ
Atom
4
What are carbohydrates?
organic compounds made of carbon, hydrogen, and oxygen
Nucleic acids that carry genetic information
Protiens that provide structural support for cells
Lipids that store energy in the form of fats
5
What is adhesion
The attraction between similar molecules
The attraction between different substances
6
what is pseudoscience?
A field of study that follows the scientific method and has evidence
a mathematical approach to understanding natural laws
a branch of science that studies supernatural phenomena
any field of study that is falsely presented as having a scientific basis
7
A ______ is a proposed explanation for an observation. A ______ is a much broader explanation.
theory: hypothesis
hypothesis; theory
8
Only animal cells have lysosomes?
False
True
9
What is matter?
A substance that only exists in living organisms
Anything that has mass and takes up space
A form of energy that organisms use for survival
A chemical that is only found in cells
10
A controlled experiment investigates a hypothesis by changing......
both variables
one variable
11
Which of the following are characteristics of unstaturated fats?
Containb only carbon and hydrogen atoms
Increase bad cholesterol levels
Solid at room temp, found in animal products
Liquid at room temp, found in plant-based oils
12
Translation at the ribosomes results in the production of proteins.
False
True
13
___ in the nucleus results in the production of RNA from DNA
Transcription
Translation
14
The cell is the fundamental unit of life
True
False
15
Passive transport requires _______; Active transport requires ____.
energy; no energy
no energy; energy
16
What is a population?
A group of interacting individuals of one species
All life on earth
All the living and non-living components
All the interacting populations in an ecosystem
17
Prokaryotic cells are multicellular?
False
True
18
What is the main purpose of peer review in scientific research?
To allow researchers to promote their own work without scrutiny
To make scientific research more complicated and time-consuming
To garantee that all research findings are completely error-free
To ensure research is evaluated by experts before publication
19
_____ contains most of the cells DNA stored in chromosomes.
nucleus
cell membrane
plasma membrane
mitochondria
20
All cells are surrounded by a _____?
Plasma membrane
Cell wall
nucleus
cloroplasts
21
The most important function of any membrane is to ____ the flow of materials.
regulate
stop
22
What is an organic compound?
A compound that contains only hydrogen and oxygen atoms
A compound made only of metals
A compound that does not contain carbon atoms
A compound that contains carbon atoms, usually bonded with hydrogen
23
What does a community consist of?
A group of interacting populations of one species
All of the interacting populations in an ecosystem
All life on earth
The living and non living components
24
A blind experiment is........
where all details are revealed to both participants and researchers
the participants dont know if they get the treatment or placebo
where neither know who is recieving the treatment
only the researcher know who is receiving the treatment
25
protons have a ___ charge, Neutrons have a ___ charge, and electrons have a ___ charge.
positive, neutral, negative
positive, negative, neutral
neutral, positive, negative
negative, neutral, positive
26
What is an ion?
A neutral molecule with no charge
A charged atom that has gained or lost electrons
An atom that has lost or gained protons
An atom with an equal number of protons and electrons
27
What is cohesion?
The attraction between similar molecules
The attraction between different substances
28
A ______ is a group of atoms bonded together.
Cell
Organ
Molecule
Organelle
29
Animal cells produce a sticky extracellular matrix that helps hold cells together
False
True
30
The _____ _____ finishes, sorts, and ships cell products
Golgi apparatus
Cell wall
Plasma membrane
31
What does an ecosystem consist of?
All the interacting populations in an ecosystem
A group of interacting individuals of one species
All life on earth
The living and non living components
32
____ contains enzymes that produce lipids. ___ contains ribosomes that produce many kinds of protiens.
smooth er; rough er
rough er; smooth er
33
An _______ is a component of the cell that performs a specific function.
Organelle
Atom
Organ
Molecule
34
What is an isotope?
An element with a differnt number of electrons than usual
An atom of the same element with a different number of neutrons
A chemical compound with an unstable atomic structure
A molecule that has gained or lost protons
35
A virus is alive
True
False
36
The first ring of an electron can hold 8 electrons?
True
False
37
Eukaryotic cells are larger and more complex?
True
False
38
____ propel the cell through their whip-like motion. _____ does more in a coordinated back-and-forth motion.
cilia; flagella
flagella; cillia
39
____ bonds involve the transfer of one or more electrons from one atom to another?
Covalent
Ionic
Hydrogen
40
What is chemistry?
The scientific study of life
The scientific study of matter
The scientific study of the earth
The scientific study of the body
41
One water molecule may participate in several covalent bonds?
False
True
42
The diffusion of water is called _____
Cellular respiration
Transcription
Photosynthesis
Osmosis
43
____ bonds involve weak electrical attraction between the positive and negative end of 2 polar molecules?
Ionic
Covalent
Hydrogen
44
Diffusion is the movement of molecules from an area of _____ concentration to an area of _____ concentration.
low; high
high; low
45
____ is the export from the cell. ____ is the import into the cell.
Exocytosis; Endocytosis
Endocytosis; Exocytosis
46
____ bonds involve the sharing of one or more electrons between atoms?
Hydrogen
Ionic
Covalent
47
The _____ is what is being manipulated; The _____ is the response, output, or effect under investigation
dependent vairable; independent variable
Independent variable; dependent variable
48
Which of the following is an example of a primary source?
A review paper summarizing multiple studies on climate change
A research article presenting original results on gene expression
A biology textbook explaning cell division
A documentary discussing recent medical breakthroughs
49
Which of the following are the three most common types of chemical bonds?
Ionic, covalent, hydrogen
Covalent, polar, and nonpolar
Hydrogen, peptide, and ionic
Mettalic, peptide, and van der waals
50
Dietary fats come in 2 basic varieties: saturated fats and unsaturated fats
True
False
51
What is hydrolysis?
A process where small molecules are combined to form larger ones
A reaction that involves the release of water molecules to form bonds
A chemical reaction where water is used to break down a compound
A reaction that only occurs in the presence of heat
52
What does the biosphere consist of?
The universe
All the interacting populations in an ecosystem
All life on earth
Living and nonliving components
53
What is biology?
The behavior of atoms in a chemical reaction
The composition of planets
The laws of physics
The scientific study of life
54
Which reaction links two monomers together anbd removes a molecule of water?
Hydrolysis
Dehydration synthesis
Combustion
Oxidation
