Which of the following describes movement of molecules into a cell through active transport? Hydrocarbons dissolve in the lipid bilayer and travel down a concentration gradient.

Molecules move through passages in the cell membrane that are created by channel proteins.

Pockets in the cell membrane form vesicles around extracellular material during endocytosis.

Vesicles carrying large molecules fuse with the cell membrane during exocytosis.

Ineed to know why d is the correct answer asap

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils