The statement, "There are 628 gray squirrels living on campus," describes the ________ of gray squirrels on campus.
A. ecosystem
B. population
C. community
D. species
Answer: B
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The coelom forms in two different ways. Which of the following statements best compares those ways?
A. In schizocoelous development a solid mass of mesoderm splits to form the coelom whereas in enterocoelous development a layer of mesoderm cells forms a pocket off of the developing gut to form the coelom. B. In enterocoelous development a solid mass of mesoderm splits to form the coelom whereas in schizocoelous development a layer of mesoderm cells forms a pocket off of the developing gut to form the coelom. C. In enterocoelous development the coelom forms inside the mesoderm whereas in schizocoelous development the coelom forms on the outside of the mesoderm. D. In schizocoelous development the coelom forms within the mesoderm whereas in enterocoelous development, no coelom is formed at all. E. Schizocoelous and enterocoelous both form the coelom in identical ways, the difference merely being that the term schizocoelous is used only for deuterostomes and enterocoelous is used only for protostomes.
Pinworms and hookworms belong to the phylum
A. Porifera. B. Cnidaria. C. Platyhelmintes. D. Nematoda. E. Annelida.
A deletion of one base pair that alters the sequences of codons is called a(n)
A. transposon B. substitution mutation C. carcinogen D. oncogene E. frameshift mutation
List at least three levels or types of genetic regulation in eukaryotes
What will be an ideal response?