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Questions in biology

[Terjawab] True or False: Bone has a poor supply of blood vessels.

[Terjawab] Which environmental change is most likely to lead to speciation? A. A fluctuation in population size B. A temporary drought C. A minor change in seasonal temperature D. A long-term shift in climate creates geographic isolation

[Terjawab] Dinosaurs have been found fossilized sitting on nests in the fossil record. True or False

[Terjawab] Discuss the impact of human activities on biodiversity and propose a solution to mitigate one negative impact.

[Terjawab] Give three excretory organs in mammals.

[Terjawab] Which of the following describes the microbiome? A. The flora remains consistent throughout a lifetime. B. It consists of normal flora such as E. Coli in the intestines. C. It mainly consists of pathogenic flora such as Clostridium difficile. D. Increase in diversity is associated with disease development.

[Terjawab] Which of the following is a type of rudimentary root that isn't involved in transporting water or nutrients? 1) Rhizoids 2) Archegonium 3) Xylem 4) Antheridium

[Terjawab] 1) Chlamydia can prevent the formation of phagolysosomes, and therefore Chlamydia can A) avoid being phagocytized B) avoid destruction by complement C) avoid being digested D) prevent antibody recognition E) none of the above 2) If the following are placed in the order of occurrence, which would be the third step? A) Emigration B) Formation of a phagocytosis C) Digestion D) Formation of a phagolysosome E) Margination 3) If the following are placed in the order of occurrence, which would be the third step? A) Activation of C5 through C9 B) Cell lysis C) Antigen-antibody reaction D) Activation of C3 E) Activation of C1, C2 and C4 4) A human host can prevent a pathogen from getting enough iron by A) reducing dietary intake of iron B) binding iron with transferrin C) binding iron with hemoglobin D) excreting excess iron E) binding iron with siderophores

[Terjawab] The biological level of analysis would be most applicable when studying which topic? A. What motivates students to study harder for a test? B. What causes people to lose their inhibitions in crowds? C. Which hormones are associated with aggressive behavior?

[Terjawab] Which trophic level of a marine food chain breaks down organisms from all of the other levels? A. Decomposers B. Herbivores C. Primary producers D. Tertiary consumers