a biologist discovers that there is 500 Joules of energy present within the producers of an ecosystem. if she constructs an energy pyramid based on this data, how many Joules of energy would be available to the secondary consumers within this system?

15 points come and ! which characteristic describes all bacteria? a rod-shaped b microscopic c multicellular d autotrophic

Ectocarpene is a volatile, sperm cell-attracting material released by the eggs of the seaweed ectocarpus siliculosus. its constitution is all the double bonds are cis, and the absolute configuration of the chirality center is s. draw a stereochemically accurate representation of ectocarpene.

The model illustrates a process by which a substance is taken up by a cell