Lampreys have reduced the size of commercial fish populations in the Great Lakes because they
A) secrete toxins that injure or kill other fishes.
B) are predators to many of the same prey species.
C) compete for food with those fish species.
D) are parasites on those fish species.
E) share many of the same predators.
D
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Production of asexual spores in ascomycetes often occurs on ____
a. basidia b. conidiophores c. sporangia d. asci e. zygospores
Which is capable of being reduced during either
glycolysis or the Krebs cycle? a. NAD+ b. FAD + c. ADP d. NADH e. NADP+
The cloaca is which structure?
a. A b. B c. C d. D e. none of these
Which of the following are present in high densities in both smooth and skeletal muscle cells? I) cilia II) mitochondria III) nuclei IV) endoplasmic reticulum
A) only I and II B) only II and IV C) only III and IV D) only I, II, and III