All tissues and organs of an adult animal arise from
three primary tissue layers, or germ layers that form
in early embryos: __________, __________, and
__________ into blood. Fill in the blank(s) with the appropriate word(s).
Answer: ectoderm, mesoderm, and endoderm
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Match the following items with the correct phrases.
_______1. In ____________________, bacteria acquire new genetic information in the form of viral genes. _______2. Oswald Avery and his colleagues discovered that DNA is the hereditary molecule while performing ____________________ experiments with Streptococcus pneumoniae. _______3. In ____________________, bacteria acquire new genetic information as a result of absorbing pieces of naked DNA from their environment. _______4. In ____________________, genetic information is passed from one bacterial cell to another via a hollow sex pilus. _______5. In ____________________, bacteria acquire new genetic information when bacteriophages inject bacterial genes. a. conjugation b. lysogenic conversion c. mutation d. transduction e. transformation
What do you know about specifically inhibiting one class of receptors? What other information is related to the question?
What will be an ideal response?
Which receptors allow you to respond to changes in muscle load?
a. muscle spindles b. cupula c. vestibular apparatus d. semicircular canals e. otoliths
Atomic force microscopes use a scanning probe that maintains a fixed distance from the surface of the specimen. It is useful for specimens that ________.
A. neither do not conduct electricity well nor have extremely uneven surfaces is correct B. both do not conduct electricity well and have extremely uneven surfaces are correct C. do not conduct electricity well D. have extremely uneven surfaces