A) an independent variable.
B) a dependent variable.
C) a standardized variable.
D) a placebo.
E) a control.
Correct Answer
verified
Multiple Choice
A) atom - molecule - organelle - cell - tissue
B) molecule - atom - organelle - tissue - cell
C) cell - organelle - atom - tissue - molecule
D) organelle - molecule - atom - tissue - cell
E) atom - organelle - molecule - cell - tissue
Correct Answer
verified
Multiple Choice
A) asexual reproduction.
B) sexual reproduction.
C) natural selection.
D) evolution.
E) homeostasis.
Correct Answer
verified
Multiple Choice
A) the existence of a moth with a proboscis of 10-11 inches
B) the existence of a competitor that also possessed especially long nectaries
C) the presence of very small bees that could fit into long nectaries
D) that the orchid must reproduce asexually
E) that the orchid was an evolutionary dead end and could no longer reproduce
Correct Answer
verified
Multiple Choice
A) Amount of ammonium nitrate and light
B) Amount of carbon dioxide
C) Amount of water
D) Height of the plants
E) Height of the plants and amount of light
Correct Answer
verified
Multiple Choice
A) autotrophs.
B) plants.
C) heterotrophs.
D) producers.
E) photosynthesizers.
Correct Answer
verified
Multiple Choice
A) independent variable
B) dependent variable
C) control group
D) standardized variable
E) both dependent variable and standardized variable
Correct Answer
verified
Multiple Choice
A) The larger the sample size the more meaningful the results.
B) The smaller the sample size the more meaningful the results.
C) An experiment is not valid without the proper control.
D) It is important to standardize aspects of an experiment that might affect the outcome,other than the independent variable.
E) All answers are correct.
Correct Answer
verified
Multiple Choice
A) Bacteria,Fungi,Plantae,and AnimaliA.
B) Bacteria,Protista,Plantae,and Animalia.
C) Protista,Fungi,Plantae,and Animalia.
D) Archaea,Bacteria,Plantae,and Animalia.
E) Archaea,Fungi,Plantae,and Animalia.
Correct Answer
verified
Multiple Choice
A) an atom.
B) a molecule.
C) a cell.
D) a tissue.
E) a biospherE.
Correct Answer
verified
Multiple Choice
A) amount of ammonium nitrate and light
B) amount of water
C) amount of carbon dioxide
D) height of the plants and amount of light
E) height of the plants
Correct Answer
verified
Multiple Choice
A) sexual reproduction
B) asexual reproduction
C) development
D) metabolism
E) homeostasis
Correct Answer
verified
Multiple Choice
A) It is used to attract mates through sexual selection.
B) It can pollinate only one type of flower.
C) It makes flying more efficient.
D) It can be used to capture other flying insects for fooD.
E) It can reach nectar that no other pollinator can reach.
Correct Answer
verified
Multiple Choice
A) It is a general way of answering questions with evidence.
B) It is a framework to consider ideas in a repeatable way.
C) It begins with observations.
D) It does not apply to problems encountered in everyday life.
E) It enables the testing of ideas.
Correct Answer
verified
Multiple Choice
A) a tentative explanation of an observation.
B) an untestable prediction.
C) a changeable element of experiments.
D) an opinion or hunch.
E) an encompassing explanation of a natural phenomenon that is well accepted.
Correct Answer
verified
Multiple Choice
A) community.
B) biosphere.
C) populations.
D) organisms.
E) nonliving environmental components.
Correct Answer
verified
Multiple Choice
A) nucleus and ribosomes
B) cell wall and nucleus
C) cell wall and cell membrane
D) cell membrane and nucleus
E) None of the answer choices are correct.
Correct Answer
verified
Multiple Choice
A) a placebo
B) a known standard of comparison
C) a normal group
D) an experimental group
E) a "zero"-value group
Correct Answer
verified
Multiple Choice
A) Archaea
B) Bacteria
C) Eukarya
D) Animalia
E) Protista
Correct Answer
verified
Multiple Choice
A) What is the meaning of life?
B) Why is the sky the color blue?
C) What causes species extinctions?
D) How did I start from only an egg and sperm?
E) Why is too much fatty food bad for me?
Correct Answer
verified
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