Species that have a delayed reproductive stage, are competing for limited resources, and have smaller numbers of slowly maturing large offspring show ________ adaptations.
A. r-selected
B. K-selected
Answer: B
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Which one of the following correctly lists the major types of tissues found in animals?
A. connective, nervous, muscle, epithelial B. connective, dermal, muscle, nervous C. dermal, ground, vascular D. bone, skin, muscle, nervous, vascular, digestive E. connective, nervous, muscle, dermal
As a transitional form, Archaeopteryx is important because it provides insight into
a. the evolution of birds into reptiles. b. the relationship between dinosaurs and birds. c. adaptations for animals moving from an aquatic to a land environment. d. all of these
A scientist wishes to develop an antimicrobial agent that specifically targets replication elongation in Escherichia coli without interfering with proteins that catalyze other replication processes. Which of the following experimental designs is most appropriate for the scientist to explore?
A. Modify an existing antibiotic to act as a competitive inhibitor of DNA polymerase I B. Design a drug that modifies the structural configuration of DNA at the oriC locus C. Create a novel protein that acts as a competitive inhibitor of the DNA ligase binding site D. Develop a molecule that interferes with the DNA-binding ability of DNA polymerase III core enzyme
Sponges _____
A) have larvae which are motile and move via the motion of cilia B) are the simplest diploblastic animals C) have a nerve net but not a central nervous system D) have feeding cells called dinoflagellates