Biology, 01.07.2019 15:20 EricaLSH3588
The cell is taking in substances through membrane proteins, without any energy expenditure of its own. the substances naturally follow their concentration gradient. however, they must go through the protein channels, because they are too large to squeeze through the cell membrane. this process is called a) osmosis. b) endocytosis. c) active transport. d) facilitated diffusion.
Answers: 2
Biology, 21.06.2019 18:20
For their summer holiday, jane and her family are visiting places surrounding the mediterranean sea. which type of biome is jane and her family visiting? a. rainforest b. shrubland c. tundra d. coniferous forest
Answers: 3
Biology, 21.06.2019 21:00
In natural selection, what is actually “selected? ” a) alleles are directly selected b) genotypes are directly selected c) phenotypes are directly selected d) entire populations are directly selected
Answers: 2
Biology, 22.06.2019 06:40
The steps in the formation of extrusive igneous rocks are listed below in an incorrect order: 1. rock melts due to high temperature. 2. rock is buried deep under earth's surface. 3. magma is forced out of earth's surface during volcanic eruption. 4. lava cools and crystallizes to igneous rock. which of these best shows the correct order of steps in the formation of extrusive igneous rocks? 1, 3, 4, 2 2, 1, 3, 4 3, 4, 2, 1 4, 2, 1, 3
Answers: 3
The cell is taking in substances through membrane proteins, without any energy expenditure of its ow...
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