Into which group would you place a unicellular organism that has 70S ribosomes and a peptidoglycan cell wall?
A) Animalia
B) Bacteria
C) Fungi
D) Plantae
E) Protist
B
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Match the following items with the correct phrases.
_______1. ____________________ are also known as immunogens. _______2. Molecules referred to as antigenic determinants are also known as ____________________. _______3. ____________________ are in a class of proteins called immunoglobulins. _______4. Small molecules called ____________________ are antigenic only when then are coupled with large carrier molecules such as proteins. _______5. ____________________ initiate type III hypersensitivity reactions. a. antibodies b. antigens c. epitopes d. haptens e. immune complexes
Eucarya
A. consist of only multicellular organisms. B. have a more complex internal structure than archaea or bacteria. C. have a simpler internal structure than archaea or bacteria. D. have a membrane around the DNA. E. have a more complex internal structure than archaea or bacteria AND have a membrane around the DNA.
Oxygen has an atomic number of 8. This means that oxygen has ____
a. 8 electrons in its outer most shell b. 8 neutrons in its nucleus c. 4 protons and 4 neutrons in its nucleus d. 8 protons in its nucleus e. 8 protons and 8 neutrons in its nucleus
What is the most likely cause of a sampling error?
a. a malfunctioning calculator b. a poorly designed hypothesis c. very few individuals in the control group d. having both an experimental and a control group e. the researcher’s knowledge of which individuals were in the experimental group