Which of the following statements concerning transport across the plasma membrane is true? a. polar molecules are transported more easily than nonpolar molecules. b. lipid-soluble substances pass through the membrane by dissolving in the lipid bilayer. c. water cannot move through the plasma membrane. d. generally, cations pass through the membrane more easily than anions.

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Which of these best describes wde by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.