In a plasma membrane, how do the tails of the phospholipid molecules line up?

They are sandwiched between two layers of heads.

They tangle randomly to form a fiber.

They alternate with the heads.

They stick out with the heads in the center.

Do you think that it is easier for a large cell or a small cell to maintain homeostasis?

According to sigmund freud, which part of the mind is composed of biological drives and consequently is the source of psychic energy

If a prokaryotic mrna were placed in a eukaryotic cell, why might it not be translated?

What is found in many tetrapods but not in fish?

If there is increase in evaporation due to higher ocean surface temperature, what process needs to increase to keep the water cycle balanced

Sally and Harry fall in love. They introduce Sally's identical twin, Emily, to Harry's identical twin, Ken. Soon there is a double wedding where Sally marries Harry and Emily marries Ken. Both Sally and Emily get pregnant.

Which process moves water molecules across the membrane of a cell? diffusion endocytosis exocytosis osmosis

Which of these is NOT a main type of tissue? connective skeletal nervous muscle

Which of the following is true with respect to mutagens? Mutagens are chemical or physical factors that increase the rate of mutation. Mutagens are the genes that cause mutation. Mutagens are inheritable characters that develop mutation.

Who was the first person to observe a living cell in a drop of pond water.