Biology 2016

 1. The incorrect statement regarding parasitic interactions is... A. Parasites only take food without killing their hosts. B. Parasites can live inside their hosts to

obtain food. C. Parasites can live outside their hosts to obtain food. D. The relationship between parasites and host cells is not always specific. E. The mechanism of parasite-host interactions is not the same as that of prey-predator. 

2. A characteristic of reptiles that shows evolutionary similarities with the Pisces class is... A. They are homeothermic, have dry, scaly skin, and can live in water. B. They move by crawling, have dry, scaly skin, and are poikilothermic. C. They have scales on their body surface. D. They breathe with lungs, have smooth, scaly skin, and are fertilized internally. E. They have dry, scaly skin, have mammary glands, and breathe with lungs. 

3. Ferns can be distinguished from other plants based on... A. They lack vascular bundles and seeds. B. They lack flowers, fruit, and seeds C. absence of flowers and vascular bundles D. absence of true leaves and seeds E. presence of vascular bundles and seeds 

4. Allopolyploidy is the formation of a new species from a normally sterile hybrid. Alloploidy is a speciation mechanism that causes... A. sympatric speciation B. parapatric speciation C. allopatric speciation D. reduction of gene flow E. genetic drift 

5. The correct statement about bacterial cell walls is... A. Gram-negative bacteria absorb purple. B. The outermost layer of the cell wall of Gram-negative bacteria is mucus. C. Gram-positive bacteria in acidic conditions turn red. D. Gram-positive bacteria have little lipopolysaccharide. E. Bacterial cell walls are composed of peptidoglycan. 

6. Secondary growth of rods is visible in cross-section. A. B. C. D. E. 

7. The difference in protein synthesis between prokaryotic and eukaryotic organisms is... A. transcription occurs in the nucleus in prokaryotes. B. some proteins go directly to the rough endoplasmic reticulum in prokaryotes. C. Translation occurs in the nucleus in eukaryotic organisms. D. Transcription occurs in the cytoplasm in prokaryotic organisms. E. Translation occurs in the nucleus in eukaryotic organisms.

8. Photosynthesis occurs in plants that have several types of chlorophyll. The following is a true statement regarding chlorophyll-a... A. Chlorophyll-a is green because it absorbs red light. B. Chlorophyll-a is green because it absorbs bright blue light. C. Chlorophyll-a is green because it absorbs violet light. D. Chlorophyll-a is green because it absorbs both red and bright blue light. E. Chlorophyll-a absorbs bright red light (maximum at a wavelength of 600 nm). 

9. DNA molecules in different endomembrane systems are most commonly found in the cells of organisms... A. Chlorella pyrenoidosa B. Escherichia coli C. Paramecium caudatum D. Saccharomyces cerevisae E. Plasmodium falciparum 

10. Fertilization in plants occurs when diploid cells fuse to form a zygote. CAUSE The zygote will develop into an embryo and form a new individual. D. If the statement is false and the reason is true 

11. Microorganisms can be used as biosorbent agents. CAUSE A biosorbent application is hydrocarbon bioremediation. B. If the statement is true, the reason is correct, but there is no causal relationship. 

12. Inhibition of hormone secretion produced by the ovaries will affect the growth of non-reproductive organs. CAUSE The quality of bone, hair, and nail growth is influenced by the hormone estrogen. C. If the statement is true and the reason is false 

13. The following is not a factor that influences flowering in plants.... (1) photoinhibition (2) temperature (3) pollination (4) hormones B. If (1) and (3) are true 

14. The increase in chest cavity volume during inspiration is influenced by the following factors, except.... (1) the diaphragm becomes concave and relaxes (2) contraction of the external rib muscles (3) the ribs descend to their original position (4) the ribs rise upward B. If (1) and (3) are true 

15. The correct statement regarding mutations is.... (1) harmful because they can cause abnormalities (2) neutral because they are neither harmful nor beneficial (3) increase genetic variation (4) beneficial because they can improve the organism's survival ability E. If all are true