Scientists are always thinking about ways to improve experimental design. In the text's potato chip experiment, which
of these changes would produce the most effective design?
a. Show a different movie.
b. Exclude teenagers as group members.
c. Collect uneaten chip remains and weigh them for both groups.
d. Provide free drinks before the experiment.
e. Use a smaller theater.
ANSWER: c
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A structure made up of two or more types of tissues that performs a specific set of functions is at what level of organization?
a. Chemical b. Cellular c. Tissue d. Organ e. System
Which of the following best describes the phylogenetic relationship between protists, fungi, plants, and
animals?
a. Fungi and animals share a common protist lineage, while plants arose from a different protist ancestor. b. Fungi and plants share a common protist lineage, while animals arose from a different protist ancestor. c. Animals and plants share a common protist lineage, while fungi arose from a different protist ancestor. d. Plants, animals, and fungi each arose from a different protist lineage. e. Plants, animals, fungi, and protists each arose from the same prokaryotic ancestor.
Dizygotic twins are also called fraternal twins
___________________ Indicate whether the statement is true or false.
Where do plants typically store their starches and sugars for later use?
A) In the leaves B) In the stems C) In the flowers D) In the roots