Bio Lecture Exam

Question 1

6. Which compound held together by ionic bond

Answer 1

Ionic compound?

Question 2

10. All of the following r (examples of) macromolecules except

Answer 2

Either amino acids or fatty acids

Question 3

11. Correct order of complexity of life

Answer 3

Atoms >molecules>cells>organism>

Question 4

13. How many neutrons in phosphorous?

Answer 4

16 neutrons (31-15(protons))=16

Question 5

15. Bohr model of methane

Answer 5

All bonds contain paired electrons shared between carbon and hydrogen

Question 6

16, which statement of lipids is true

Answer 6

They can act as an energy source
Cholesterol and fats r dif varieties of lipids, fat molecules contain c h and o, lipids r insoluble in water,
lipids r an important component of biological membranes

Question 7

18. Particles that have a net negative charge

Answer 7

Electron

Question 8

19 condensation reaction , reaction occurs during formation of which protein structure

Answer 8

H20 or peptide backbone< most likely that

Question 9

20 6 elements that r most common in organisms

Answer 9

Carbon hydrogen nitrogen oxygen phosphorus sulfur

Question 10

21. Not 1 of the major steps in the hypothesis/prediction approach

Answer 10

Stating opinion

Question 11

22 define atomic number

Answer 11

of protons, the one top ex hydrogen # is 1

Question 12

23. Glucose fructose both have the formula c6h12o6 but dif, known as?

Answer 12

Isomers

Question 13

23. Diff between acids and base

Answer 13

Acids donate proton( hydrogen ion
Base accept proton (hydrogen ion

Question 14

23. Basic structural and physiological unit of most organisms

Answer 14

Cell

Question 15

27. Polysaccharide and monosaccharides linked by

Answer 15

Glycosidic bond

Question 16

29. A peptide bond forms between

Answer 16

Carboxy group amino group
2 amino group

Question 17

31p and 32p have the same

Answer 17

of electrons

Question 18

31 which characteristic of water contributes most to

Answer 18

High specific heat

Question 19

32 statements about an atom

Answer 19

Have as many neutrons as electrons

Question 20

33. Main function of cellulose

Answer 20

Physical support/ strength

Question 21

34, how does this model shown differ from triglyceride?

Answer 21

3 phos 2 fatty acids

Question 22

35. A triglyceride contains fatty acids and what

Answer 22

Glycerol

Question 23

36. Diff in electro negativity in atoms that share electrons in a bond r involved in..

Answer 23

How polar?

Question 24

37. Unsaturated fatty acids do not pack together because of

Answer 24

Double bonds

Question 25

38. Covalent bonds share

Answer 25

Electrons

Question 26

40 when exposed to heat human body does what

Answer 26

Evaporation

Question 27

41 advantage of controlled scientific experiments

Answer 27

All variables held constant

Question 28

42. Starch and glycogen differ cuz

Answer 28

Starch = plants
Glycogen= animals
Main energy storage for

Question 29

43. Group of cells work together to perform /to carry out similar function

Answer 29

Tissue

Question 30

45. Which level of proteins structure would be destroyed by the addition of (uh)

Answer 30

Secondary & tertiary ?

Question 31

46. A double covalent bond represents what

Answer 31

2 atoms share 2 electrons

Question 32

48. Statement about reaction

Answer 32

Product is heavier than each reactant