Which of these properties are the most appropriate for
identifying an element?
A. size and shape
B. volume and size
C. volume and freezing temperature
D. density and melting temperature
100
Which activity is an example of a chemical change?
A. tearing of paper
B. melting of butter
C. digestion of food
D. chopping of wood
100
A group of cells that have the same function lump
together to create a(n)
A. organ.
B. organ system.
C. organism.
D. tissue
100
The smallest unit of life in any organisms is the
A. cell
B. gene
C. atom
D. molecule
100
President Kennedy decided that the United States should send humans to the Moon. At that time, the technology did not exist to do so. However, scientists were eventually successful. Which principle about technology does this example show?
A. New technology will be invented regardless of human desires.
B. Scientists can invent technologies that will do anything if needed.
C. Most technological advances arise from large governmental decisions.
D. Specific goals and motivation can lead to the development of new technologies.
200
Tony plans to build models that represent the different
types of molecules found in living things.
Which of these statements BEST describes what his models should look like?
A. They should contain at least one carbon atom.
B. They should all contain between two and four atoms.
C. They should be models of long chains that can link together.
D. They should be models of both small and large molecules
200
Hydrogen and oxygen are both flammable. Water,
made up of 2 parts hydrogen and 1 part oxygen, does
not burn because
A. water is a compound, and hydrogen and oxygen are elements.
B. water is liquid, and hydrogen and oxygen are gases.
C. when elements combine physically they form new
substances with different properties.
D. when elements combine chemically, they form new substances with different properties.
200
Which structure is the most complex structure that
makes up an organism?
A. Cells
B. Tissues
C. Organs
D. Organ systems
200
As multi-cellular organisms develop, their
A. cells become more specialized.
B. chloroplasts start to produce more energy.
C. mitochondria begin to store more food.
D. bodies become more uniform in nature.
200
Where is a satellite MOST LIKELY to be found?
A. circling around Earth
B. spinning in the center of a galaxy
C. traveling back and forth between Earth and the Moon
D. traveling back and forth between Earth and other planets
300
Element X is shiny and brittle. Element Y is dull and is a good conductor of electricity. Element X and Element Y chemically combine to form a compound. The new compound will have
A. the properties of both elements.
B. properties different from the elements.
C. all of Element X's properties.
D. all of Element Y's properties.
300
What is the SAME before and after a chemical reaction?
A. the total number of atoms
B. the properties of the materials
C. the arrangement of the atoms
D. if the material is a solid, liquid or gas
300
The most basic structure of living things is a(n)
A. bone.
B. cell.
C. organ.
D. tissue.
300
Which of these statements describes an organ?
A. a group of cells of a single type
B. tissues of different types working together
C. a distinct part of a cell with a specific function
D. a single tissue performing a function in a larger organism
300
The blood transports molecules in the body required to perform different activities. Which cell organelle is responsible for transporting molecules?
A. nucleus
B. lysosome
C. mitochondria
D. cell membrane
400
What is the smallest particle of matter that retains the
properties of an element?
A. atom
B. compound
C. molecule
D. proton
400
What is DIFFERENT about the materials before and after a chemical reaction?
A. the number of atoms
B. the size of the atoms
C. the properties of the materials
D. the materials have more energy
400
The organ system depends on the following order of
organization:
A. cells, cell organelles, organs, tissues.
B. tissues, organs, cells, cell organelles.
C. cell organelles, cells, tissues, organs.
D. cells, cell organelles, tissues, organs.
400
Which of these statements describes a tissue?
A. many cells working together to perform a function
B. many organs working together to perform a function
C. many cells working separately to perform different functions
D. many organs working separately to perform different functions
400
Which of the following is genetic material?
A. protein
B. carbohydrates
C. lipids
D. DNA
500
Which BEST describes a chemical change?
A. The change is reversible.
B. The change is temporary.
C. The change produces a new substance.
D. The identity of the substance remains the same
500
What do elements, compounds, and molecules all have in common?
A. They are all made of atoms.
B. They can exist only in a solid form.
C. All of them are chemically the same.
D. All of them can be chemically broken down.
500
Plants and animals are different from other organisms
in that they
A. contain specialized cells that work together to sustain life.
B. have the capacity to have more than one offspring.
C. are all capable of reproducing through asexual reproduction.
D. have the capacity to relocate to a different environment.
500
Which part of this plant cell contains the genetic information?
A. cell wall
B. chloroplasts
C. cytoplasm
D. nucleus
500
Tissues of a particular cell type come together to
produce a(n)
A. organ.
B. organ system.
C. organism.
D. a tissue.