Provide two lines of evidence that support the idea that DNA is the genetic material. What will be an ideal response?
Concepts to Consider: The experiments of Avery et al., which showed that DNA was responsible for
transformation of avirulent strains of pneumococcus to virulent strains, and the experiments of
Hershey and Chase, which demonstrated that DNA was responsible for the production of
bacteriophages within infected bacteria, are excellent examples showing DNA to be the hereditary
material.
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Most procaryotic cells reproduce by:
A) binary fission B) budding C) gamete production D) spore formation
In humans, spermatogenesis differs from oogenesis in that spermatogenesis ____
a. involves meiosis while oogenesis involves mitosis b. begins at birth while oogenesis begins at puberty c. has unequal cytoplasmic divisions, while oogenesis does not d. produces somatic cells while oogenesis produces gametes e. produces four functional gametes while oogenesis produces one functional gamete
Which of the following is not a polymer of numerous monomer units?
A) a phospholipid B) a polypeptide C) an RNA molecule D) cellulose E) starch
During gas exchange, body cells
A) take up CO2 and release O2. B) release O2 to red blood cells. C) increase in size to accommodate the reuptake of O2. D) release CO2 and take up O2.