Question

Some fungi assist plants by “fixing” atmospheric dinitrogen into usable organic forms.

True

False

Which of these fungal features supports the phylogenetic conclusion that fungi are more closely related to animals than to plants?

	A.	Fungi store polysaccharides as starch.
	B.	The cell walls of fungi are made of chitin.
	C.	Zygomycetes have flagellated gametes.
	D.	Fungi are able to change their body shape continuously throughout their life.

The RNA World/Replication First Hypothesis is the idea:

	A.	That RNA evolved directly from an iron-sulfide compound
	B.	That early life used RNA for both information (inheritance) and catalyzing reactions before the evolution of DNA and enzymes
	C.	That the earliest life used chemicals like iron-sulfide as a source of energy for basic metabolism
	D.	That life has an extraterrestrial origin
	E.	That the early Precambrian had high concentrations of oxygen instead of sulfur or iron

Why might the large change in the composition of earth's atmosphere 2.4 billion years ago be considered a 'catastrophe'?

	A.	It favored sexual reproduction over asexual reproduction, but asexual reproduction was dominant at the time
	B.	It favored anaerobic metabolism over aerobic metabolism, but aerobic metabolism was dominant at the time
	C.	It favored chemoheterotrophy over lithoheterotrophy, but lithoheterotrophy was dominant at the time
	D.	It favored aerobic metabolism over anaerobic metabolism, but anaerobic metabolism was dominant at the time
	E.	It allowed the splitting of water, which changed the structure of food webs

Answer 1

Ans) Which of these fungal features supports the phylogenetic conclusion that fungi are more closely related to animals than to plants?

C.	Zygomycetes have flagellated gametes

Ans) The RNA World/Replication First Hypothesis is the idea:

B.	That early life used RNA for both information (inheritance) and catalyzing reactions before the evolution of DNA and enzymes

Ans) Why might the large change in the composition of earth's atmosphere 2.4 billion years ago be considered a 'catastrophe'?

D.	It favored aerobic metabolism over anaerobic metabolism, but anaerobic metabolism was dominant at the time