The ________ gland lies in the center of the brain and contains secretory cells that produce melatonin

Fill in the blank(s) with correct word


pineal

Biology & Microbiology

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Mr. Johnson was becoming slightly deaf. To test his hearing, his doctor held a vibrating tuning fork tightly against Mr. Johnson's jaw. This sent vibrations through the bones of the skull, setting the fluid in the cochlea in motion. Mr. Johnson could hear the tuning fork this way, but not when it was held away from the skull a few inches from his ear. Where was the hearing problem most likely to

be? A. auditory cortex of Mr. Johnson's brain B. auditory nerve leading to Mr. Johnson's brain C. hair cells in the cochlea D. tympanum or the bones of the middle ear E. fluid of the cochlea

Biology & Microbiology

Ferns are more advanced than mosses because mosses lack which structure found in ferns?

a. spores b. cuticle c. xylem d. sporophytes e. flagellated sperm

Biology & Microbiology

Sympathetic effects include

a. decreased heart rate. b. decreased salivation. c. narrowing of pupils. d. constriction of the airways. e. none of these

Biology & Microbiology

What legitimate factors might lead a scientist to do an imperfect version of an experiment, such as using chicken eggs as a stand-in for gull eggs? (Check all that apply.)  

_____  because the scientist doesn't care about proper procedure _____  the perfect experiment is too expensive _____  the perfect experiment would harm the study species _____  to quickly get preliminary data for a grant _____  ignorance _____  the perfect experiment would take too much time 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 experimental design? What other information is related to the question?  Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection: 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