In a process called coevolution, two species exert natural selection pressures on each other
Indicate whether the statement is true or false
TRUE
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When a Bacillus anthracis population suddenly must form spores to survive a harsh nutrient poor environment, how do the cells obtain energy?
A) Cells in a growth phase that have not used up all of their energy will be the only ones to make endospores, which is why relatively few endospores are often made from a large population. B) Intracellular energy reserves are quickly made available to produce endospores. C) Slow responding cells are cannibalized by others that already began spore formation. D) Global regulation is initiated to minimize energy waste in biosynthetic pathways and catabolic pathways are increased to consume remaining usable substrates to fuel spore formation.
The Deuterostomia include (select all that apply)
A. echinoderms B. cnidarians C. chordates D. placozoans E. arthropods
Turner syndrome (XO) is a sex chromosome aneuploidy. Of the effects listed below, which one is not usually seen in this syndrome?
A) unusually short stature B) infertility C) skeletal abnormalities D) unusually long limbs
The membrane component(s) primarily responsible for the structure and function of plasma membranes is/are
A. nucleic acids. B. glycolipids. C. phospholipids. D. cholesterol. E. glycosylated proteins.