Carbon-14 has the same:
A) number of protons but more neutrons than carbon-12.
B) atomic number and atomic mass as carbon-12.
C) atomic number and, therefore, the same number of neutrons as carbon-13.
D) atomic mass as both carbon-12 and carbon-13.
E) atomic mass and, therefore, the same number of neutrons as carbon-12.
A) number of protons but more neutrons than carbon-12.
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Very high concentrations of ____ accumulates in large predatory fishes such as swordfish, bluefin tuna, and albacore
tuna, which may cause developmental abnormalities when consumed by pregnant women.
a. methylmercury b. DDT c. sulfur dioxide d. chlorofluorocarbon (CFC) e. ozone gas
The eardrum is directly connected to the ____
a. cochlea b. malleus c. tympanic membrane d. round window e. stapes
Ribosomal RNA
a. covalently binds amino acids. b. contains an anticodon. c. is produced in the nucleolus of the nucleus. d. assists in DNA replication. e. has no known function in the cell.
The cells that store starch in dicot roots are located between the
A) xylem and the phloem. B) epidermis and the root hairs. C) epidermis and the vascular cylinder. D) epidermis and the cortex.