The primary tissue layers are formed in which of the
following stages?
a. cleavage
b. morula
c. gastrula
d. zygote
e. blastula
Answer: c
Biology & Microbiology
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________ aid in the assembly of some biomolecules.
Fill in the blank(s) with the appropriate word(s).
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The sporophyte of a multicellular alga _____
a. is haploid c. produces spores b. is a single cell d. produces gametes
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Which bone is found on the “thumb side” of the forearm?
a. scapula b. humerus c. radius d. ulna e. clavicle
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Vectors used in recombinant DNA technology
A. are self-replicating forms of DNA carriers. B. are always circular DNA molecules. C. deliver DNA to cells for replication. D. are self-replicating forms of DNA carriers and deliver DNA to cells for replication. E. are always circular DNA molecules and deliver DNA to cells for replication.
Biology & Microbiology