The Scientific Process
Defining & Exploring Life
Foundations of Chemisty
Genetics & Inheritance
I'll Take My Chances--Potpourri
Foundations of Chemistry #2
100
An explanation of events based knowledge from many investigations
scientific theory
100
Two horses mate and produce a foal. This is an example of what life characteristic?
Reproduction
100
Which two atomic particles are attracted to each other?
protons (+) and electrons (-)
100
Snapdragon flowers exhibit incomplete dominance. Cross a red and white snapdragon. What are the F1 phenotype possibilities?
100% pink
100
Cellular respiration if the process in which organisms break down food molecules to release ____.
energy
100
In a chemical formula, the number of each type of atom in the compound is show by numbers called ___.
subscripts
200
Organizing results into a table, graph, or chart is done during which step of the scientific process?
analyze results
200
Which of the following is an example of a response to stimuli?
you are scared
you are tired
you are hot
you eat food
you eat food
200
An ion is an atom that has gained or lost ____
electrons
200
Two blue flowers are crossed. one homozygous and one is heterozygous. If blue is dominant and white is recessive, what will be the ratio of colors in the F1 offspring?
4 blue : 0 white
200
Scientists analyze results by using which tools to help see and recognize patterns
graphs, tables, charts
200
Aspartame (artificial sweetener) has a chemcial formula of C13H16N2O3. Which element in the formula has the greeatest number of atoms?
Hydrogen
300
Factor in an experiment that DOES NOT change, must remain the same for all experimental groups
constant
300
The total magnification of an image in a compound microscope is equal to ___
objective lens multiplied by ocular (eye) lens
300
Which family of elements has properties of both metals and nonmetals?
metalloids/semiconductors
300
In a Punnett Square, a capital letter stands for which allele?
dominant
300
Photosynthesis is theprocess in which plants use energy from light to produce ___
food/sugars
300
Which type of atomic bond forms a salt?
ionic (metal + nonmetal)
400
Which diagram illustrates both accurate and precise shooting of the arrow at a target?
Target C
400
A tadpole turns into a frog over its lifetime. This is called ___?
growth and development
400
In an atom, where are electrons located?
traveling outside around the nucleus
400
Change in the hereditary features of an organism over time is known as _____
evolution
400
A prediction or statement that can be scientifically tests; a possible explanation to a problem
hypothesis
400
In a chemical equation, the formulas to the left of the arrow represent the ____
reactants
500
The variable being measured in an investigation; also known as the responding variable
Dependent Variable (DV)
500
Charles Darwin observed that animals of the same species who had slight variations in traits that helped them survive longer, could produce more offspring than animals who were not as well equipped. Which of the following is an example of a trait that supports better survival?
choosing to take a cat home from the shelter
planting certain flowers to attract butterflies
black bears living in a region covered with snow
turtles with long necks on an island with elevated food sources
turtles with long necks living on an island with elevated food sources
500
When atoms rearrange and bond into new substances, the process is called ________.
a chemical reaction
500
a genetic factor that bvlocks another genetic factor from being expressed is called a(n) ____.
Dominant trait
500
One of the very first scientists...gave us the idea that claims had to be backed by evidence and the idea of spontaneous generation
Aristotle
500
Elements found on the far right of the table in Group 18, are known as _____ and are chemically stable, they don't form compounds.
Noble Gases, Inert Gases
600
In a controlled experiment there are usually two groups--the experimental group and what other group?
The control group
600
A cladogram is similar to which of the following?
concept web
chronology tree
grouping set
family tree
family tree
600
Type of chemical bond when atoms share electrons
covalent
600
The father of genetics
Gregor Mendel
600
which of the following do some scientists believe shows evidence for evolution in living species?
analogous structures
homologous structures
vestigial structures
all of them
All of them!
600
In a chemical equation, formulas to the right of the arrow represent ____
products
700
The variable that is changed by the investigator, also known as the manipulated variable
Independent variable (IV)
700
What are the 3 statements of the cell theory?
1. cell is basic unit of life
2. all living things are made of cells
3. cells only come from preexisting cells
700
how many valence electrons are needed in the outermost energy level for an atom to be chemically stable?
8
700
Purebred parents are said to have what kind of genotype?
Homozygous dominant or homozygous recessive
700
This theory is often referred to as "survival of the fittest"
The Theory of Evolution by Natural Selection
700
Helium and most nonmetals are found in which area of the periodic table?
right side
800
when you are being skeptical of scientific issues in the media, what scientific skill are you using?
critical thinking
800
What distinguishes prokaryotic cells from eukaryotic cells?
Eukaryotic cells have a nuclueus and membrane bound organelles. (Eu-Do, Pro-No)
800
In general, metals are ____. (major characteristic)
good conductors of heat and electricity
800
Tool that shows the inheritance of a trait over several generations
Pedigree
800
The place of an element in the modern periodic table is determined by its
atomic number (number of protons)
900
Describes a phenomen, but does not explain why or how it happens
scientific law
900
Name the 3 major scientists credited with the cell theory.
Schleiden, Schwann, & Virchow
900
Why is water a covalent compound?
H2O is a nonmetal bonded to a nonmetal sharing valence electrons to fill outer levels
900
Name one property of an ionic bond
form crystalline solids, high melting points, high solubility, good conductors when melted or dissolved, brittle
1000
Which measurement below contains the least number of significant digits?
U
1000
What is the name of the theory that explains the evolution of the eukayotic cell?
Theory of Endosymbiosis
1000
The following equation represents the chemical reaction of cellular respiration when the body breaks down sugar. How many carbon atoms are needed for the reaction to occur?
C6H12O6 + 6O2 ---> 6CO2 + 6H2O + energy
6 carbon atoms
1000
Atomic energy levels are occupied by ___
electrons