Which level of organization is common to all life forms?
A. cell.
B. tissue.
C. organ.
D. organelle.
E. colony.
A. cell.
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During ________ proteins are moved from the cytoplasm to the membrane or periplasmic space, while during ________ proteins are moved from the cytoplasm to the external environment.
A. translocation; translation B. translocation; secretion C. secretion; translocation D. transcription; translation E. secretion; translation
The most common phenotype or allele for a gene in a population is referred to as the
A. F1 generation. B. P generation. C. wild-type. D. dominant population. E. recessive population.
During the inflammatory response, which type of chemical is secreted by mast cells?
1.Antibodies 2.Chemokines 3.Cytokines 4.Histamines
Many algal species have life cycles consisting of alternating haploid and diploid generations. Which sentence describes the organisms that comprise the most common life cycle in brown algae?
a. They are unicellular in both the haploid and diploid stages. b. They are colonial in both the haploid and diploid stages. c. They are multicellular in both the haploid and diploid stages. d. They are multicellular in the haploid stage and unicellular in the diploid stage.