2. a tendency of the body to maintain a balanced internal state ANSWER
homeostasis
3. what are the 3 types of proteins ANSWER globular, fibrous, membrane
4. adipocytes are seen in adipose and fat tissue. they store and maintain
proper energy balance by storing calories in the form of . they also mobi-
lize energy sources in response to . ANSWER fat, lipids, stress
5. ribosomes synthesize ANSWER proteins
6. in a chemical change, a substance is produced
ANSWER new ex ANSWER adding baking soda to a recipe to make it less sour,
frying an egg, burning wood
7. in a physical change, the material involved is structurally the before
and after the change ANSWER same
ex ANSWER crushing a can, melting ice, breaking glass, boiling water,
8. in an ionic bond, valence electrons are ANSWER transferred
9. how many layers of tissues does the uterus have? ANSWER 3 (inner endometrium,
middle my- ometrium, outer perimetrium)
10. what parts of the body produce melanin? ANSWER hair, iris, skin
, 11. purine bases ANSWER A, G
12. pyrimidine bases ANSWER T, U, C
13. base pairs ANSWER AT (U), GC
14. enzymes catalyze biochemical reactions by ANSWER lowering the activation energy of the
reaction, either forward or backward
15. an ionic bond is between a ANSWER metal and
nonmetal eg ANSWER NaCl
16. what is a hypothetical explanation for an occurrence that is based on prior
knowledge called? ANSWER hypothesis
17. lying flat on your back ANSWER supine
18. lying on your belly ANSWER prone
19. on the periodic table, where are the elements with the largest atomic radii
found? ANSWER bottom left corner
20. endocytic vesicles are formed when ANSWER the plasma membrane surrounds a particle outside
the cell
21. the duodenum receives chyme and ANSWER further digests it
22. homeostasis is primarily maintained by what feedback loops? ANSWER negativ