September 4th hw quiz

Question 1

Water molecules attracted to each other due to the opposite charges created by partial separations within the molecules. these attractions are

Answer 1

hydrogen bonds

Question 2

macromolecules that are used by all organisms to store hereditary info are

Answer 2

DNA molecules

Question 3

Element found at high concentrations in living systems but not rly in Earth’s crust

Answer 3

nitrogen

Question 4

Smaller than a cell but bigger than molecule

Answer 4

organele

Question 5

common elements in living sys.

Answer 5

Oxygen, Hydrogen, Carbon, Nitrogen

Question 6

2+ atoms bonded togeth

Answer 6

molecule

Question 7

organized collection of cells

Answer 7

tissue

Question 8

usually ab 5-50 micrometer in diameter

Answer 8

animal cell

Question 9

usually ab 1-10 micrometers in length

Answer 9

bacterial cell

Question 10

Miller-Urey experiment informed our understanding of early life on earth bc

Answer 10

showed that molecules assoc. w/ life can be formed w/o living organisms xoxo

Question 11

a covalent bond is stronger than

Answer 11

a hydrogen bond

Question 12

universal use of DNA as genetic material is good example of

Answer 12

evolutionary conservation