Suppose a tRNA is carrying the amino acid valine. What is its anticodon?
a. GGU
b. CUC
c. CGC
d. CAC
e. AUA
d
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Flowering plants
a. only reproduce asexually. b. produce clones through sexual reproduction, and under certain circumstances seeds through asexual reproduction. c. reproduce asexually about half the time and sexually about half the time. d. only reproduce sexually. e. produce seeds through sexual reproduction, and under certain circumstances clones through asexual reproduction.
When the body utilizes fats for energy the fatty acids enter which pathway of the metabolic cycle?
specifically glycolysis in the liver a. glycolysis b. Krebs cycle c. electron transport chain reactions d. specifically glycolysis in the liver e. fermentation reactions
In any mammal, the phenotype for a mitochondrial trait is based on what maternal characteristic?
What will be an ideal response?
Which of the following questions might scientists ask to most reliably determine if there has ever been life on Mars?
(A) How far from Earth was Mars 3.5 billion years ago? (B) Is there scientific proof that Earth ever hadan oxygen-free atmosphere? (C) Did Mars have the elements present in its atmosphere to support life? (D) Was there oxygen gas on Mars 3.5 billion years ago?