We have come to know that the primary component of the plasma membrane is the phospholipid. What makes these molecules so unique and the perfect building block for a bilayer is ... Group of answer choices

a phospholipid has both polar and nonpolar regions

a phospholipid is able to firmly attach to the neighboring phospholipid

all choices are correct

a phospholipid is both positively and negatively charged

What causes darkening of the skin as melanin production increases

The lineage of pea plants produced round seeds for four generations. the plants that fertilized these pea plants also produced round seeds. however, in the fifth generation, the plant produced to two plants with wrinkled seeds. can that be possible?

Select all the correct answers. for a claim about the natural world to be considered scientific, what attributes must it have? a).it must be applicable to future events and occurrences. b)it must be based on scientific observations that can be repeated in a controlled setting. c)it must be open to modification if new evidence doesn't completely support it. d)it must be consistent with only a small portion of relevant observations or data.