Urgent which event during fertilization leads to the acrosome reaction? a. the release of the sperm in the vagina b. the binding of the sperm to the zona pellucida c. the entry of sperm nucleus inside the egg plasma membrane

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic