Clay is considered a possible site for early polymerization because it binds organic monomers and
contains zinc and iron ions that may have functioned as ATP,
_______________ Indicate whether the statement is true or false.
F, catalysts
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Tropical leafcutter ants collect leaf cuttings which they transport to special underground chambers. There, they chew the leaves to create nursery beds on which they grow a species of fungus they use for food
When ant queens disperse to establish new colonies, they carry the fungus with them, dispersing it as well (this benefits the fungus). In the ants' nest, the fungus is at risk of being destroyed by another fungal species that is able to grow in the same habitat, using the same limited resources. On their bodies, the ants carry and provide a home for bacteria that produce antibiotics the ants use to kill this second fungus and thereby protect their food supply. In this system, the relationship between the leafcutter ants and their fungal food species is: A. interspecific competition. B. mutualism. C. predation. D. parasitism. E. commensalism.
Hydrogen sulfide
A. is produced when sulfur compounds are used as terminal electron acceptors. B. may react with iron to produce a black precipitate. C. is produced by Desulfovibrio. D. has a rotten egg smell. E. All of the choices are correct.
Embryonic development includes all of the following except
a. cleavage. b. fertilization. c. gastrulation. d. organogenesis. e. growth.
Agents generating mutation-inducing DNA damage are collectively referred to as ________
Fill in the blank(s) with correct word