Which of the following allows nutrients and other substances to be transported across the cell membrane? a. carbohydratesb. proteinc. fatsd. glucose

b. Proteins

Explanation:

Several transmembrane proteins serve as transport proteins and move charged, polar and large substances such as ions, amino acids, sugars through membranes. These are the carrier proteins and channel proteins. Each type of transport protein transports a specific type of substance. Carrier proteins bind the ion or molecule and undergo changes in shape. This change moves the molecule across the membrane. Channel proteins form pores through the membrane to allow transport of substances.

For example, aquaporins are transmembrane proteins that allow water to pass through membranes.

the correct answer is - ability to find a mate

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.