Video: Biology Unit 8: Biogeochemical Cycling (10:06)
#_____ Name______Per. ___ Date: _____
1. Describe Biogeochemical cycling: how ______move from living things
2. Mnemonic: CHNOPS
a. Carbon:
i. How many valence electrons?
ii. What types of things are built out of carbon?
b. Hydrogen: a part of ______but can provide ______by supplying electrons for energy transfer
c. Nitrogen:
i. Diagram an amino acid:
ii. Nitrogen is required to build ______and ______found in DNA
d. Oxygen: in ______and in cellular respiration it receives electrons
e. Phosphorus: found in cell membranes (phospho______), in DNA as a
______group and in _____ (energy)
f. Sulfur: found in the amino acids cysteine and methionine. Sulfur gives us
______to those big proteins through disulfide bonds.
3. Nutrients vs. Energy
a. How does energy get to our planet?
b. Eventually used and then given off as
c. Nutrients are going to be r______, the amount of water/carbon is s______
4. Water Cycle:
a. Water is stored in the ______(reservoir)
b. Moves into plants through their r______
c. How do we get water?
d. How do we lose it? Plants transpire but we
5. Carbon cycle:
a. Where is it stored?
b. How does it get it into plants?
c. We eat plants or things that eat plants, we return it to the environment through
d. We are changing the amount of carbon by burning
6. Nitrogen Cycle:
a. To get it into plants and return it to the environment we need b______
b. We eat plants or animals that eat plants. When organisms d_____ they decompose.
7. Nitrogen cycle:
a. Stored in:
b. How does it get into the soil, through w______
c. Then plants assimilate it through their r______
d. As animals we feed on plants/animals and we die and decompose it will return to the
s______and eventually to rock.
.