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