An individual human can be thought of as a ________, consisting of a host and a variety of microbes. DNA from saliva or fecal samples, for example, would reveal the DNA genomes of both the host and its symbiotic microbes, known together as the ________.
A. holobiont, hologenome
B. microbiome, hologenome
C. microbiome, microgenome
D. hologenome, holobiont
Answer: A
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Together, the membranes of the amniotic egg are called the ____ membranes
Fill in the blank with the appropriate word.
What is a protist?
a. A prokaryote that is not bacteria b. A prokaryote that is not bacteria or archea c. A eukaryote that is not an animal, but may be a plant d. A eukaryote that is not an animal or plant, but may be fungi e. A eukaryote that is not an animal, plant, or fungi
Thymine and cytosine differ from adenine and guanine in that ________
A) thymine and cytosine are single-ring structures, whereas adenine and guanine are double-ring structures B) thymine and cytosine are only found in DNA, whereas adenine and guanine are found in both DNA and RNA C) thymine and cytosine are only found in DNA, whereas adenine and guanine are only found in RNA D) thymine and cytosine are larger nitrogenous bases
Where is an atrioventricular valve located?
a. where blood enters the aorta b. between the right atrium and the right ventricle c. between both atria and ventricles d. between the left atrium and the left ventricle