All of the following organelles are used for movement in unicellular organisms except __________
An experiment that tests the effect of a single variable is called a _______
a. theoretical experiment
b. controlled experiment
c. variable experiment.
d. hypothetical experiment
Carbon can bond with one or more carbon atoms, producing a variety of ______
b. amino groups
c. carbon skeletons
d. inorganic molecules
If you wanted to find archaea, where would you look? Choose the best answer
a. Inside your intestines
b. On the forest floor
c. In trenches at the bottom of the ocean
d. On the leaves of plants
The hypotheses comprising Cell Theory are
What do archaea and bacteria have in common?
a. Their cells have well-defined nuclei
b. They are multicellular
c. They are all shaped like rods, sphere, and spirals
d. Their cells have no nuclei
What happens if you test a hypothesis multiple times and the data does not support your prediction?
a. Change the data to support your prediction
b. Run the experiment again until you get the results you’re looking for
c. Conclude that your hypothesis must be rejected
d. Re-think your hypothesis
What is phylogeny? Choose the best answer.
a. The way that different species interact with one another
b. The habitats in which different species live
c. The evolutionary relationships between different species
d. The way animals mature before they are born
What is the term used to describe the energy needed to get a reaction started?
a. adhesion energy
b. activation energy
c. cohesion energy
d. chemical energy
What might cause a theory to change over time?
a. New laws passed by the government
b. New but untestable ideas
c. Changes in public opinion
d. The discovery of new evidence
What might happen if a cell did not have any ATP?
a. It would not have enough energy to carry out passive transport
b. It would not have enough energy to carry out active transport
c. Its transport proteins would be made of carbohydrates instead
d. Its cell membrane would no longer be semi-permeable
What types of environmental conditions can denature a protein?
a. pH, time, solute concentration, temperature
b. pH, salinity, solute concentration, temperature
c. pH, time, solute concentration, temperature
d. time, salinity, solute concentration, temperature
Which of the following describes a state of equilibrium?
a. When the concentration of water outside a cell is the same as the concentration of water inside of a cell
b. When a cell with a lot of water in it continues to absorb water
c. When water molecules have stopped moving or vibrating
d. When the roots of a tree absorbs nutrients from the soil
Which of the following is a testable hypothesis?
a. Lilies are more beautiful than tulips
b. A tree needs at least 4 hours of sunlight a day to survive
c. The Mythbusters are the greatest scientists on earth
d. Humans will land on Mars someday
Which statement best describes a difference between prokaryotic cells and eukaryotic cells:
a. The presence of both DNA and ribosomes in prokaryotic cells indicates that they are more complex than eukaryotic cells.
b. The presence of membrane-bound organelles in eukaryotic cells indicates that they are more complex than prokaryotic cells.
c. The larger size of eukaryotic cells indicates that they are more complex than prokaryotic cells.
d. The larger size of prokaryotic cells indicates that they are more complex than eukaryotic cells.
What’s the difference between a hypothesis and a theory?
a. “Theory” is another word for “fact;” “hypothesis” is another word for “guess”
b. Hypotheses can’t be proven, theories can
c. Theories have been confirmed through tests; hypotheses have not
d. Theories contain many hypotheses; a hypothesis only contains one theory
Our cells, along with plants, are eukaryotic. The size and shape of a cell can sometimes tell you about the cell’s________.
Nerve cells are one of the largest cells in your body, extending almost a meter long. Each nerve cell ends in tiny fingerlike projections called_______.
Water and minerals are transported through plants in long, hollow cells known as_______ . The second question is: _________ are responsible for making plant cells green. (You must provide an answer to ONE of the questions)
Some biologists do not classify these pathogens as an organism, because they cannot _______ without a host.
_______ can trigger an immune response to a less virulent strain of a pathogen. These shots can help prevent someone from developing the flu.