Phospholipids, cell membrane
The hydrophilic heads are polar and the hydrophobic tails
nonpolar. Since the heads are polar,
they are attracted to the water. The
tails are repelled by it.
3. prokaryotic DOES
NOT HAVE a nucleus and a eukaryotic does
4. plant cells have a
cell wall and chloroplasts and animal cells do not. Both cells are eukaryotic.
5. If the difference
between the electronegativities of the two atoms is more than 2, it is
ionic. If it is between .5 and 2 it is
polar covalents, and if it is less than .4, it is nonpolar covalent.
6. nonpolar covalent
7. ionic
8. metabolism,
growth, adaptation, homeostasis, organization (cells), movement, sensitivity
9.
10. subatomic
particles (protons, neutrons, electrons), atoms, molecules, organelles, cells,
tissues, organ, organ system
12. isotonic – stays the
same, hypotonic swells, hypertonic shrinks
13. independent
variable – variable you are testing
Dependent variable changes as a result of the independent
variable,
Control – the level of the IV you compare everything else to
Constants – those conditions kept the same in an experiment
to ensure that results are due to the independent variable alone.
14. primary – a chain of amino acids
Secondary – pleated sheets or spirals
Tertiary – 3 D
15. amino acids
16. isotonic
17. less than 5
18 more than 5
19.
20. adhesion – water sticks
to something else through hydrogen bonding
Cohesion – water hydrogen bonds to itself
Hydrogen bonding – a weak attraction between two different
molecules due to their polarity.
Polar – having partially positive and partially negative ends
of a molecule. It is due to differences
in electronegativity of the atoms sharing the electrons.
22. channel proteins,
builds structures like hair or muscles, enzymes, receptors, neurotransmitters
23. to control what
enters and leaves the cell and maintain homeostasis; to communicate between
cells
24. it was a helix
25. see note sheet from 11-25-14
26. see notes from Ch
6 chart on pH values
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