Accuracy in the translation of mRNA into the primary structure of a polypeptide depends on specificity in the _____
A) binding of ribosomes to mRNA
B) binding of the anticodon to small subunit of the ribosome
C) attachment of amino acids to rRNAs
D) binding of the anticodon to the codon and the attachment of amino acids to tRNAs
D
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Consider the structure of a trophic pyramid when answering the following questions: Why are shrimp more abundant than whales in the ocean?
A. Whales reproduce more slowly, so maintain small population sizes. B. More energy is available to primary consumers, and thus the biomass/abundance of primary consumers is greater than that of secondary consumers. C. Whales are warm-blooded secondary consumers and lose more energy as heat, therefore their level on a trophic pyramid is smaller (more narrow) than for shrimp (primary consumers). D. The levels of the trophic pyramid represent the percentage of primary producers that make up a consumer's diet. Whales eat less of the primary producers, so their level on a trophic pyramid is smaller than the level for shrimp.
_______ is a drug that is used to experimentally produce polyploidy in organisms
A. Penicillin B. Colchicine C. Polymosca D. Karyocine
The Ngorongoro Conservation Area is an example of ____
a. conservation through preservation, with people completely excluded b. conservation through preservation, with people allowed only as temporary visitors c. mixed use conservation, with some human residents and livestock grazing d. mixed use conservation, with no human residents and limited livestock grazing e. conservation through restoration, with efforts to remove contaminants underway
What are leaf veins?
A. Vascular bundles in leaves B. Photosynthetic cells in leaves C. Sclerenchyma cells in leaves D. Palisade mesophyll in leaves E. Spongy mesophyll in leaves