If a strain of Neurospora is unable to grow on minimal medium but can grow when substance A is added to minimal medium, then __. a. the strain is wild type. b. the strain lacks the enzyme or enzymes needed to break down substance A. c. the strain lacks the enzyme or enzymes needed to synthesize substance A. d. substance A must be an enzyme

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.

Individuals do not compete directly for resources, but are prey for the same predator

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient