The characteristic ____________of a radioisotope
allows us to determine the age of rocks and fossils
using a technique called __________ Fill in the blank(s) with the appropriate word(s).
Answer: half-life, radiometric dating
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Animals colonized land after plants did. The first land animals were _____, who first colonized land about _____ million years ago
A. insects; 575 B. hemichordates; 542 C. chelicerates; 420 D. insects; 360 E. myriapods; 100
Root hairs develop from the
A) pericycle. B) cortex. C) endodermis. D) Casparian strip. E) epidermis.
What may be a result of the denaturation of proteins?
A. Formation of hydrogen bonds B. Loss of three-dimensional structure C. Removal of R groups from amino acids D. No change in enzyme activity E. Formation of covalent bonds
Refer to Table 8.2. What is the sequence of amino acids encoded by the following sequence of bases in a strand of DNA?
A) leucine-arginine-lysine-alanine B) asparagine-arginine-lysine-alanine C) asparagine-cysteine-valine-serine D) Translation would stop at the first codon. E) The answer cannot be determined based on the information provided.