The reduction of atmospheric nitrogen to ammonia is called ________.
A. ammonification
B. nitrification
C. nitrogen fixation
D. denitrification
Answer: C
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Based on the phylogeny shown, which characteristic is homoplastic?
A. tree
B. needles
C. flowers
D. seeds
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you already know about cladistics?
Consider Possibilities
· Consider the different answer options. Which can you rule out?
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?
The first oncogene discovered was _____, which codes for a _______.
a) SRC, intermediary metabolism regulatory protein b) SRC, serine/threonine protein kinase c) SRC, tyrosine protein kinase d) MYC, tyrosine protein kinase e) MYC, serine/threonine protein kinase
C4 plants occur more commonly in desert conditions because _________.
A. C4 plants produce water as a product of their photosynthetic pathways. B. C4 plants can shuttle CO2 to the sites of photosynthesis even when their stomata are closed to conserve water. C. C4 plants can conserve water even with their stomata open. D. C4 plants are succulent (water-storing) plants.
Water molecules have a polarity, which allows them to be electrically attracted to other water molecules and other polar molecules by weak chemical bonds known as _____.
a. hydrogen bonds b. polar covalent bonds c. Van der Waals interactions d. ionic bonds e. nonpolar covalent bonds