20 points & Brainliest! Propose a hypothesis to explain the sudden appearance of a species in a fossil record. Include what conditions are needed to preserve a fossil in your hypothesis.

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

3differences between bacteria and other 2 cells

What tool do geneticists use to predict the outcome of genetic crosses? a.karyotype b.punnett square c.centrifuge