Cell walls of most Archaea and bacteria contain peptidoglycan.
Answer the following statement true (T) or false (F)
False
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Streptococcus pneumoniae is the most prevalent Gram-negative bacterium isolated from pneumonia patients.
Answer the following statement true (T) or false (F)
Convergent evolution occurs when two species living in
A. the same area become reproductively isolated. B. different areas become reestablished and are able to reproduce. C. the same area are competing for the same resource thus causing one to evolve away from the other. D. different areas evolve similarities through natural selection acting on those characteristics.
What observation first suggested that H2A and H2B formed heterodimers?
What will be an ideal response?
Select the statement that correctly describes differences among these four types of algae.Chlamydomonas reinhardtii Gonium pectorale Pleodorina californica Volvox aureus
A. Chlamydomonas reinhardtil is single celled and biflagellate, while Gonium pectorale, Pleodorina californica and Volvox are multicellular with a single flagella on all cells. B. Chlamydomonas reinhardtil and Gonium pectorale cells lack flagella, while Pleodorina californica and Volvox have biflagellate somatic cells. C. Gonium pectorale is single celled, Chlamydomonas reinhardtil is composed of identical cells, and Pleodorina californica and Volvox are composed of two different cell types. D. Chlamydomonas reinhardtil and Gonium pectorale cells are biflagellate, Pleodorina californica and Volvox have no biflagellate cells. E. Chlamydomonas reinhardtil is single celled, Gonium pectorale is composed of identical cells, and Pleodorina californica and Volvox are composed of two different cell types.