Question

1. living things are structured at many levels of biological organization. which level of biological organization is the simplest level at which a structure can support life functions? a. cell b. organ c. organ system 2. a jackrabbit has large ears containing blood vessels that help it maintain a constant body temperature by adjusting heat exchange with the surrounding environment. which characteristic of life is best described by this example? a. growth b. organization c. homeostasis biology and artificial (for question 6) bacteria are single - celled microorganisms. the cell walls of these microorganisms serve as barriers to chemicals that might affect the processes that occur within a bacterial cell. antibiotics are a type of substance used to stop bacterial growth. some antibiotics cause the bacterial cell wall to rupture. 6. the function of which human organ is most like the cell walls of bacteria? a. skin b. liver c. heart 7. all living organisms must maintain homeostasis in order to survive. which statement best describes one way humans maintain homeostasis? a. temperature is regulated by giving off carbon dioxide. b. water content is regulated by giving off carbon dioxide. c. temperature is regulated by sweating. 8. which conclusion is best supported by the presence of ribosomes in prokaryotes and eukaryotes? a. ribosomes have different functions in prokaryotes and eukaryotes

Explanation:

1. The cell - wall of bacteria acts as a barrier. The skin in humans also acts as a barrier, protecting the body from external substances. The liver is mainly involved in metabolism and detoxification, and the heart is for pumping blood.
2. Sweating helps regulate body temperature in humans, which is a form of maintaining homeostasis. Giving off carbon dioxide is related to respiration and not directly to temperature or water - content regulation in the way described in options A and B.
3. Ribosomes are present in both prokaryotes and eukaryotes and have a similar function of protein synthesis in both types of cells, indicating that ribosomes have a fundamental and conserved function across different cell types.

Answer:

1. A. skin
2. C. Temperature is regulated by sweating
3. No correct option provided in the question, but the correct concept is that ribosomes have similar functions in prokaryotes and eukaryotes for protein synthesis.