During inspiration (a.k.a. inhalation) of air into the lung of a mammal
A. the chest cavity has a positive pressure.
B. the diaphragm moves upward.
C. the diaphragm contracts.
D. the rib cage moves down.
E. the intercostal muscles relax.
C. the diaphragm contracts.
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Assuming a cleft chin is dominant, the father’s genotype would be __________
a. Cc b. CC c. cc d. either Cc or cc
In Frederick Griffith's experiment, live R cells and dead S cells were injected into mice, causing fatal pneumonia. Neither live R cells nor dead S cells alone cause pneumonia, so Griffith concluded that _____
1.DNA is the genetic material 2.some, but not all, R cells cause pneumonia 3.DNA encoding the ability to form capsules was released from dead S cells and picked up by R cells 4.hereditary information of unknown identity transformed R cells into S cells 5.DNA controls the synthesis of specific products
the --- of life arises from the adaptations of species to different habitats over long spans of time
Fill in the blank(s) with the appropriate word(s).
Fungi can form functional associations with which of the following?
A. Animals B. Plant roots and phototrophic microbes C. Phototrophic microbes D. Plant roots