The accumulation of carbon dioxide, lactic acid, or other cellular waste causes nearby precapillary sphincters to
A) shorten. B) contract. C) lengthen. D) relax.
D
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Order the following genomes from smallest to largest
i. Mus musculus ii. Homo sapiens iii. Escherichia coli iv. Saccharomyces cerevisiae v. Drosophila melanogaster A. iii, v, iv, i, ii B. iii, iv, v, i, ii C. iv, iii, v, ii, i D. iv, v, iii, ii, i E. v, iv, iii, ii, i
The complete genetic material of an organism is its
A) genome. B) chromosome. C) phenotype. D) genotype. Answer A
This lineage of Echinoderms is made up of sea lilies and feather stars, although the group was much
more diverse and abundant 500 million years ago. Adult feather stars can swim or crawl, while adult sea lilies are sessile, with their central disk attached to a stalk.
a. Echinoidea b. Ophiuroidea c. Crinoidea d. Holothuroidea e. Asteroidea
All populations of all species in a habitat are a __________. Fill in the blank(s) with the appropriate word(s)