What would happen if snRNAs did not recognize the branch point within an intron?
A. A 3' poly A tail would not be added to the transcript.
B. A lariat would not form.
C. snRNAs would not base pair with the 5' end of the intron.
D. A 5' cap would not be added to the transcript.
Answer: B
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What can the mouthparts of an animal tell you about its diet?
A) Mouthparts of animals are specialized to obtain desired food items efficiently. B) Mouthparts provide clues about the type of digestion that goes on in the stomach. C) Mouthparts provide clues about the rate of nutrient absorption. D) Mouthparts of all animals are designed to reduce the size of the food particles ingested.
About twelve to twenty-four hours after the previous meal, a person's blood-sugar level normally varies from 60 to 90
milligrams per 100 milliliters of blood, though it may rise to 130 mg/100 ml after meals high in carbohydrates. That the blood-sugar level is maintained within a fairly narrow range despite uneven intake of sugar is due to the body's ability to carry out
a. adaptation. b. inheritance. c. metabolism. d. homeostasis.
e. evolution.Some species of racerunner lizards are all female and reproduce asexually. Which strategy would they use for reproduction?
1.binary fission 2.hermaphroditism 3.parthenogenesis 4.budding
An anticodon
a. is a three-base sequence of nucleotides on tRNA. b. is produced by translation of RNA. c. has the same base sequence as does the codon. d. is the same as a gene.