Unit 1

Question 1

non polar bonds

Answer 1

• strong
• equal sharing of electrons
• hard to break apart

Question 2

polar covalent bonds

Answer 2

• strong
• unequal sharing of electrons
• charged molecule

Question 3

ionic bond

Answer 3

two atoms with different electronegatives come together

• not equal sharing, unstable
• can be positive or negative
• one atom gets all the elctrons all the time

Question 4

hydrogen bond

Answer 4

• weak
• loose temporary bond
• two atoms become loosly attracted to eachother but don’t share electrons
• if there are a lot of them such as in DNA it is collectively strong

Question 5

synthesis reactions

Answer 5

• take energy

- also known as anabolism

Question 6

electronegativity

Answer 6

greater pull around the nucleus

Question 7

decompostition reaction

Answer 7

• opposite of synthesis

- catabolic

Question 8

water

Answer 8

• solvent

- great cohesiveness and surface tension

Question 9

acids

Answer 9

• high in H+

- numbers under 7 on ph scale

Question 10

bases

Answer 10

• high in OH-

- numbers higher than 7 on ph scale

Question 11

4 macromolecues

Answer 11

lipids, carbs, nucleic acid, and proteins

Question 12

lipids

Answer 12

insoluable in water

-llong carbon or hydrocarbon chains

Question 13

phospholipids

Answer 13

has a charge

• charged heads go towards water
• lipid tail doesn’t like water

Question 14

steroids

Answer 14

• are lipids (are insoluable in water)
• float through blood and attach to cells to send signals
• help you adapt from outside environment (ex. temp)

Question 15

carbs

Answer 15

category two

• an energy source
• CH2O are sugars

Question 16

4 types of carbs

Answer 16

monosaccharides (simple)
disaccharides
oligosaccharides
polysaccharides (complex)

Question 17

proteins

Answer 17

enzymes are made up of proteins

-proteins act as catalysts in your body

Question 18

amino acids

Answer 18

• building blocks of proteins
• 21 of them
• peptide bond is formed between amino acids