Ccording to Figure 46-3, which of the following statements is true?
A
a. CO2 will diffuse from the alveoli into the capillaries.
b. CO2 will diffuse from the capillaries into the tissues.
c. O2 will diffuse from the capillaries in the tissues to the capillaries in the lung.
d. O2 will diffuse from the alveoli into the capillaries.
e. O2 will diffuse from the tissues into the capillaries.
D
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The fossil record indicates that the first vascular plants possessed roots
A. true B. false
Carbon dioxide, which is a breakdown product of the pesticide, is likely used by the bacteria
for which of the following?
a. an energy source b. cell structure c. to carry genetic information d. both an energy source and cell structure
Materials like calcium, sulfur, iron, and many other minerals move within the plant
a. only via xylem. b. only via phloem. c. only in parenchyma. d. in parenchyma and phloem. e. in both xylem and phloem.
The epidermis consists of
A. collagen fibers. B. elastic fibers. C. adipose tissue. D. stratified squamous epithelial cells.