7. What is NOT a function of the actin filament of cells?
(A)Maintain cell shape
(B) Join in muscle contraction
(C) Moving chromosomes
(D)Change the cell shape
(E)Form division of animal cells

3. What is the main molecule that caused the ocean acidification? (A)Calcium (B) CO2 (C) O2 (D)HCI (E)NH3

4. What is the most abundant polysaccharide in the natural organic compounds? (A)Cellulose (B) Chitin (C) Starch (D)Glucose (E)Lipids

5. Which one below is the formal term for the genetic material of all organisms? (A)Ribonucleic acid (B) Polynucleotides (C) Nucleotides (D)Pyrimidine (E)Deoxyribonucleic acid

6. Which type of living organisms below cannot be observed with a light microscope? (A)Bacteria(B)Frog egg (C) Human sperm (D)Virus (E)Plant cells

8. Which below does prove the fluidity of cell membrane? (A)A mouse cell and a humnan cell can experimentally form a hybrid cell. (B) The transmembrane proteins are identified on cell membrane. (C) Cells change shape. (D)The property of selective permeability of cell membrane. (E)Diffusible property across cell membrane.

9. What is not a trigger or a good description of apoptosis? (A)The external signals called death-signaling molecules. (B) The apoptosis caused via integrative signaling instead of single signaling. (C) DNA damage is one of the signals. (D)Malfunctioning of the ER protein production is one of the signals. (E)The apoptosis genes are highly conserved across organisms. 

10. About the electron transportation chain in cellular respiration, which one below is a wrong statement? (A)The electron transportation chain occurred across the inner mitochondrial membrane. (B) The H' are pumped out to the intermembrane space from the mitochondrial matrix. (C) Once the H gradient is formed, it results a proton-motive force. (D)The electron transport chain produces ATp, then was used in chemiosmosis. (E)The steps of electron transport chain and chemiosmosis together was called oxidative phosphorylation.

11. What is the characteristic of the G2 phase in a cell cycle? (A)Centrosomes duplicated. (B) Centrosomes moving away from each other. (C) Condense of the chromosomes. (D)Chromosome duplicated. (E)Chromosomes moving away from each other.

12. For the human meiosis process, at which step that the cells first become to haploid and separated cells? (A)Anaphase I (B) Telophase I (C) Prophase I (D)Metaphase II (E)Metaphase I

13. Which one is NOT a correct description about crossing over? (A) It happens in Prophase I of meiosis. (B) It happens during the association called synapsis. (C) It happens at the site called chiasma. (D)It results the separation of sister chromatids at Anaphase I. (E)It results the recombinant chromosomes.