What characteristics of coastal seas allow the area to support a larger number of high-level consumers?
a. High productivity and shorter food chains
b. High productivity and large populations of prey.
c. Shorter food chains and large populations of prey.
d. High productivity and high species diversity.
a
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Two strains of S. cerevisae (yeast) are crossed. One has the genotype A B and the other a b. Which statement correctly describes the tetrads that can be produced by one reciprocal exchange without gene conversion in the dihybrid?
A) Recombination occurs at the four-strand stage to produce a tetrad with A B, A B, a B, and a b chromosomes. B) Recombination occurs at the four-strand stage to produce a tetrad with A B, A b, a B, and a b chromosomes. C) Recombination occurs at the two-strand stage to produce a tetrad with A B, A b, a B, and a b chromosomes. D) Recombination occurs at the two-strand stage to produce a tetrad with A b, A b, a B, and a B chromosomes.
In animals, the extracellular matrix plays important roles in each of the following processes except
A) cell division. B) cell motility. C) DNA replication. D) cell differentiation. E) cell adhesion.
The energy from catabolic reactions is used to produce
a) ADP. b) ATP. c) AMP. d) phosphate.
T or F: Muscle force is related to the physiologic cross-sectional area
What will be an ideal response?