Biology, 31.08.2019 01:20 kingcory6230
What substance is in the outer layer of epithelial cells that protect and waterproof the layers of skin cells beneath it?
(a) keratin
(b) melanin
(c) calcium
(d) fatty tissue
Answers: 1
Biology, 21.06.2019 19:30
Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.
Answers: 2
Biology, 22.06.2019 11:00
1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis
Answers: 1
Biology, 22.06.2019 13:00
Aresident is five feet tall.what is the measurements in iches
Answers: 2
Biology, 22.06.2019 20:10
True or false 5. carrier proteins have the ability to to change shape and physicially move molecules across the cell membrane. 6. in a facilitated diffusion, the concentration of the molecules to be moved across the cell membrane is higher inside the the cell.
Answers: 1
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