Ap Bio Unit 2 |54 Questions| With Correct Answers.

Ribosomes {Ans: the location of protein synthesis (translation). RNA is read and the code used to form a polypeptide chain}Do you think cells would do this on purpose? They do! When? {Ans: During controlled cell death- apoptosis}Small lipid hormone (steroid) {Ans: Can move freely into/out of the cell. Being small, and a lipid, it can pass through the hydophobic portion of the lipid bilayer.}If the loaf were a living organism, why would it be better for that organism to be composed to many small pieces rather than one large piece? {Ans: Living organisms must be able to quickly take in substances from the environment and get rid of waste. The smaller the organism, the higher its surface area to volume ratio is, allowing it to perform transport into and out of the cell more quickly.}Name 2 functions of the cell wall. {Ans: Cell walls provide structural support for the cell. They also prevent the cell from taking on too much water via osmosis, providing pressure against the inflow of water, so that the cell does not burst in hypotonic environments.}List three pieces of evidence that supports the Endosymbiotic theory. {Ans: 1) Mitochondria and Chloroplasts