Biology, 10.11.2020 23:30, damientran
The diagram below shows many features of a cell membrane. The extracellular fluid surrounds the outside of the cell. The cytoplasm fills the inside of the cell.
Eric made a physical model of a cell membrane by putting one zip-top plastic bag inside another. He punched some straws through the plastic so that they led from outside the outer bag to the inside of the inner bag.
Which of the following features of a cell membrane can be seen using Eric's physical model?
Some molecules can pass directly through the cell membrane.
Pores and proteins in the cell membrane allow passage through it.
Proteins and other molecules can move around within the cell membrane.
A cell membrane is made of two layers.
Answers: 1
Biology, 22.06.2019 22:10, charlesiarenee0
Which of the following correctly describes the appearance of muscle tissue found in the heart? (2 points) single-nucleus, non-striated, short cells single-nucleus, striated, branching cells multinucleated, non-striated, branching cells multinucleated, striated, long threadlike cells
Answers: 1
Biology, 23.06.2019 01:30, dillondelellis2006
Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time
Answers: 3
The diagram below shows many features of a cell membrane. The extracellular fluid surrounds the outs...
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