The components of the pectoral girdle are:a
three fused hipbones.
b. the clavicles and the scapula.
c. the ribs and the clavicles.
d. the ribs and the sternum.
e. the ribs and the digits.
B
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A plant's ability to absorb carbon dioxide is reduced when:
A. water is limited B. temperatures are extreme C. stomata are closed D. the epidermis is lacking E. mesophyll cells lack air spaces
________ and ________ groups are negatively charged functional groups of carbon, whereas the ________ group is a positively charged functional group.
Fill in the blank(s) with the appropriate word(s).
rRNA sequence comparisons are useful for determining evolutionary relationships
Indicate whether this statement is true or false.
If a person was not able to produce pancreatic
secretions, which macromolecule(s) would they have difficulty digesting?
a. carbohydrates b. proteins c. fats d. nucleic acids e. all of these