Which term is used in treatment of tumors with radiation?

a. steroid
b. antibiotic
c. antimetabolite
d. liner accelerator
e. plant alkaloid


d. liner accelerator

Biology & Microbiology

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NPP is the difference between plant photosynthesis and respiration. Therefore, NPP quantifies the net absorption of what element(s) by living plants?  

A.  carbon B.  phosphorus C.  nitrogen D.  oxygen E.  nitrogen, phosphorus, and potassium Clarify Question · What is the key concept addressed by the question? · What type of thinking is required?   Gather Content · What do you already know about productivity?   Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?   Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

A human embryo is capable of movement and has gonads that are distinguishable as either testes or

ovaries by the end of the:a. second week. b. fourth week. c. sixth week. d. eighth week. e. first trimester.

Biology & Microbiology

A botanist discovers a new species of plant in a tropical rain forest. After observing its anatomy and life cycle, the following characteristics are noted: flagellated sperm, xylem with tracheids, separate gametophyte and sporophyte generations with the sporophyte dominant, and no seeds. This plant is probably most closely related to

A) mosses. B) charophytes. C) ferns. D) gymnosperms. E) flowering plants.

Biology & Microbiology

Answer the following statements true (T) or false (F)

1. Humans exert top-down pressures on white-tail deer. 2. Using insects from the original homeland to control invasive weeds is a form of biological control. 3. Resource partitioning enables similar species to coexist in a community. 4. Secondary metabolites can become essential feeding stimulants for some herbivores.

Biology & Microbiology