Which of the following statements is false?
a. Reflexes are the simplest of all nervous
pathways.
b. The nervous system required sense organs
before organisms could perceive their
environment.
c. Motor neurons lead toward the central nervous
system.
d. Reflex actions are stereotyped and repeatable.
e. All of these are false.
Answer: c
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Matter is gained or lost in ecosystems. How does this occur?
A) Chemoautotrophic organisms can convert matter to energy. B) Matter can be moved from one ecosystem to another. C) Photosynthetic organisms convert solar energy to sugars. D) Detritivores convert matter to energy. E) Heterotrophs convert heat to energy.
If a cell has the partial diploid genotype lacI+ lacO- lacZ+ lacY+ ______________________ lacI- lacO- lacZ+ lacY- , how will its gene expression function in the presence of allolactose?
Fill in the blank(s) with correct word
The three small bones (malleus, incus, and stapes) that transmit vibrations across the middle ear are collectively called the ____
Fill in the blank(s) with correct word
What are the two types of beta sheets?
A.) helical and pleated B.) primary and secondary C.) soluble and insoluble D.) parallel and antiparallel