All questions are ready for submission.
1. How many carbon atoms does each pyruvic acid molecule contribute to the Krebs cycle?A. 8B. 2C. 6D. 4
2. How many oxygen molecules are required to completely oxidize one glucose molecule through aerobic respiration?A. 3B. 6C. 12D. 24
3. Which substance cannot be processed by glycolysis for catabolism?A. Fatty AcidB. StarchC. GlycerolD. Sucrose
4. Which characteristic is shared by both echinoderms and cnidarians?A. They have segmented bodiesB. Both have stinging cellsC. They have three embryonic tissue layersD. They are both radically symmetrical
5. Which characteristics are true of Phylum Chordata?
I. Presence of notochord that provides skeletal support
II. Pharyngeal slits that have become modified for gas exchange
III. Dorsal hollow nerve cord that develops into the central nervous systemA. II and IIIB. I and IIC. I, II and IIID. I and III
6. Which characteristic cannot be attributed to fungi?A. AutotrophsB. Absorptive NutritionC. DecomposersD. Spore Production
7. Which biological process does not involve mitosis?A. Development of embryoB. Production of gametesC. GrowthD. Repairing of damaged tissues
8. Which statements accurately describe mammals?
I. They have four chambered heart
II. They produce milk for the young
III. They are warm bloodedA. I and IIB. II and IIIC. I, II and IIID. I and III
9. What term describes the development of an egg into a new organism without fertilization by sperm?A. RegenerationB. ConjugationC. FusionD. Parthenogenesis
10. Which structure is responsible for blood cell formation?A. CartilageB. JointsC. TendonsD. Bone Marrow
11. What is most likely to happen when a species fails to adapt to environmental changes?A. It will transform immediately into a new formB. It will become isolatedC. It will remain unchanged indefinitelyD. It will become extinct
12. What is the term for the release of a mature egg cell from the ovary?A. FertilizationB. OvulationC. CopulationD. Germination
13. Which blood cells are responsible for the clotting process?A. ThrombocytesB. ErythrocytesC. LeukocytesD. Neutrophils
14. Where does an ectopic pregnancy typically develop?A. UterusB. OvaryC. Fallopian TubeD. Cervix
15. Why is the semi-permeable nature of cell membranes important?A. It is important in determining the size of the cellB. It controls the pressure and energy gradientC. It allows the molecules to diffuse freely in and out of the cellD. It controls the kind of substances that enters and leaves the cell
16. Which evolutionary theory explains the disappearance of snakes' legs and the development of giraffes' long necks?A. Theory of natural selectionB. Theory of use and disuseC. Theory of chromosomal changeD. Theory of action and interaction
17. Which of the following are plant cell structures not found in animal cells?A. Plastids and ribosomesB. Chloroplasts and a large central vacuoleC. Asters and centriolesD. Cell wall and cell membrane
18. Which gland functions as an exocrine gland?A. Thyroid GlandB. Pituitary GlandC. Salivary GlandD. Adrenal Gland
19. Which organ is not considered an accessory organ of digestion?A. LiverB. Adrenal GlandC. PancreasD. Salivary Gland
20. Which hormone stimulates the development of male secondary sexual characteristics?A. EstrogenB. TestosteroneC. ProlactinD. Progesteron
21. Which anatomical structure serves both reproductive and urinary functions in males?A. UrethraB. UreterC. TestesD. Scrotum
22. Which organelle is primarily responsible for cellular respiration and ATP production?A. RibosomeB. MitochondrionC. Golgi apparatusD. Endoplasmic reticulum
23. What is the correct sequence of stages in complete metamorphosis in insects?A. Egg, nymph, adultB. Egg, pupa, larva, adultC. Egg, larva, pupa, adultD. Larva, egg, pupa, adult
24. Which nitrogen base is found in RNA but not in DNA?A. UracilB. AdenineC. GuanineD. Thymine
25. Which blood type is considered the universal donor?A. Type AB. Type OC. Type BD. Type AB
26. What is the term for organisms that can produce their own food using light or chemical energy?A. AutotrophsB. HeterotrophsC. DecomposersD. Consumers
27. Which enzyme breaks down starch into simpler sugars in the mouth?A. PepsinB. LipaseC. AmylaseD. Trypsin
28. What type of joint allows the greatest range of motion in the human body?A. Hinge jointB. Pivot jointC. Gliding jointD. Ball and socket joint
29. Which plant hormone is responsible for phototropism and apical dominance?A. GibberellinB. CytokininC. Abscisic acidD. Auxin
30. What is the functional unit of the kidney responsible for filtering blood?A. GlomerulusB. Bowman's capsuleC. Loop of HenleD. Nephron
