The swim bladders of fishes function primarily in ventilation. Indicate whether the statement is true or false
False - buoyancy
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In prokaryotic cells (bacteria), DNA replication would occur in the
a. Cytoplasm b. Cell membrane c. Ribosome d. Nucleus e. Stroma
Which statement about the immune system is correct?
a. Memory cells are involved in a primary immune response. b. Dendritic cells were first identified in the nervous system. c. Interferons are specific proteins that block cell replication at the level of mitosis. d. Natural killer cells are involved in both specific and nonspecific immune responses. e. Defensins are one type of protective protein synthesized by T helper cells.
Which adaptations allowed reptiles to complete their life cycles on land?
A) lungs B) ectothermic metabolism C) an amniotic egg D) four legs
A diploid cell undergoes meiosis. What are the products of this division?
A) two diploid cells B) two haploid cells C) four diploid cells D) four haploid cells E) one polyploid gamete