1. The number of rats living in Los Angeles would be referred to as…
An atom
The Biosphere
An Ecosystem
A Population
A Cell

2. How many electrons does the element carbon have (atomic mass= 12, atomic number = 6)?
A. 6 b. 8 c. 2 d. 4

3. True or false
DNA is a nucleic acid

4. True/ false
Cellulose is a carbohydrate

5. True/false
The building blocks of proteins are called sugars

6. True/false
tRNA is used to carry the genetic information from the nucleus to the chloroplast

7. True/false
Insects can ‘skate’ across the surface of water because its H-bonding ability

8. True/false
Salt water boils faster than water because it has fewer H-bonds

9. Which of the following is better for your health?
Saturated fat
Unsaturated fat

10. Which of the following is NOT a component of DNA?
A. thymine
B. uracil
C. Adenine
D. Guanine

11. The purpose of the Golgi is…
A. to make proteins
B. to provide cellular energy
C. photosynthesis
D. packaging and export

12. One organelle found in a plant cell would be…
A. vacuole
B. chloroplast
C. mitochondria
D. ribosome
E. all of the above are organelles of plants

13. A human cell is eukaryotic, a bacterial cell is ___________________

14. The theory which states that eukaryotes evolved due to symbiosis between organelles is called __________________

15. The passive diffusion of water through a semipermeable membrane is called _______________________

16. What will happen if a cell is placed into a hypotonic solution?

17. What Is meant by turgor pressure?

18. Phagocytosis refers to … which?
Cell eating
Cell drinking

19. Transport across a membrane involving an input of energy is called….

20. The enzyme that fixes carbon dioxide from the air, (found in the chloroplast), is called….

21. Which membranes contain the enzymes of the light reactions of photosynthesis?

22. Name 3 subatomic particles

23. What is the “smallest unit of life”?

24. 1. Which of the following correctly indicates the sequence of increasing organization of living things?
A. Molecule, cell, organelle, organ, organ system, chemical building blocks, macromolecules
B. Organelle, tissue, cell, organ, organ system, organism, community, biosphere
C. Atom, molecule, organelle, cell, tissue, organism, community, ecosystem, biosphere
D. Organ, tissue, cell, molecule, chemical building blocks, macromolecule, atom
E. Cell, organ, tissue, organ system, organism, community, ecosystem, biosphere.

25. Which molecule makes up the membranes of cells?

26. The universal energy carrier is called…

27. Cells that open and close to allow carbon dioxide into plants are called…

28. Crossing over during meiosis occurs during which phase?

29. Bacterial cells reproduce by which method?

30. Pyruvic acid is converted into _________ and _____ in yeast that are grown in the absence of oxygen.

31. This organelle is used for protein synthesis

32. This structure supports the cell and is made of microtubules.

33. The fluid of the cell is called the ____

34. Human gametes have _______ chromosomes.

35. Harry has hanging earlobes (E) but his mother does not
Harry has hanging earlobes (E) but his mother does not. He marries Annie who has attached earlobes (e). What are the chances that their son will have attached earlobes?

36. answer
50%

37. Henry has hemophilia. He marries Betty, who is a carrier of this disease. What are the chances that they will have a son with hemophilia?

38. 25%

39. Humans breathe in ___________ and let out carbon dioxide.

40. Oxygen binds to ______________, a protein in the blood.

41. Define: substitution mutation

42. Starting with the right atrium, trace the flow of blood through the heart.

43. True/false
The word ‘thylakoid’ means ‘hollow shell’

44. Which of the following structures produces sperm?
a. filament
b. Gametophyte
c. sporophyte
d. ovule
e. stigma

45. True/false
The four main classes of macromolecules found in living things are: lipids, proteins, carbohydrates, and vitamins/minerals.

46. Which major macromolecule is a component of the ribosome?
rRNA
tRNA
mRNA
Carbohydrate
Lipids
enzymes

47. Carrier proteins assist (help) the movement of molecules across the cell membrane in a manner that does not require energy. This process is known as…
a) active transport
b) passive transport
c) facilitated diffusion
d) pumping
e) plasmolysis

48. What is a biological catalyst?
Name one.

49. What is ‘neutral pH’ on the pH scale?

50. What is the difference between an organ system and an organism?

51. Which is bigger, an atom or a molecule?

52. end