In Mendel’s pea plant experiment, the trait of pea shape was represented by the two variations
____________________ and ____________________. Fill in the blank(s) with the appropriate word(s).
ANSWER: smooth; wrinkled
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Recognition of a chemical signal by a receptor protein in a membrane is most similar to ____
a. mRNA specifying the sequence of amino acids in a specific metabolic pathway operating in an organelle b. binding of a specific substrate to the active site of an enzyme c. turning on transcription of a gene d. allosteric regulation of proteins e. an enzyme requiring a specific optimum pH and temperature for activity
A polar molecule can be described as being ________.
Fill in the blank(s) with the appropriate word(s).
The esophagus and trachea are both open to the ________
A) pharynx B) posterior oral cavity C) posterior nasal cavity D) larynx
In the microscope, you observe multinucleated amoeboid cells with sporangia that form spores. This is a(n)
A) ascomycete. B) cellular slime mold. C) Euglenozoa. D) tapeworm. E) plasmodial slime mold.