What is the role of ribosomes?
A. Make proteins
B. Waste removal
C. Transport
D. Storage
A ribosome is a structure of eukaryotic cells that makes proteins.
Therefore, the Correct Answer is A.
More Questions on TEAS 7 Science
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Q #1: In general, where in the periodic table of elements are the elements with the largest atomic radii located?
A. Upper-right corner
B. Upper-left corner
C. Bottom-left corner
D. Bottom-right comer
Answer Explanation
In general, atomic radius increases moving down a group due to the increasing number of electron shells. In general, atomic radius decreases moving from left to right across a period due to the increasing number of protons in the energy level. Therefore, atoms of elements in the bottom-left corner of the periodic table tend to have the largest atomic radii.
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Q #2: What is most likely the pH of a solution containing many hydroxide ions (OH-) and few hydrogen ions(H+)
A. 2
B. 6
C. 7
D. 9
Answer Explanation
A solution that contains more hydroxide ions than hydrogen ions is a base, and bases have a pH greater than 7, so the only possible answer is choice D. 9.
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Q #3: What types of reaction is Cu (s) + 2AgNO3(aq) → 2Ag(s) + Cu(NO3)2(aq)?
A. Single replacement
B. Double replacement
C. Synthesis
D. Decomposition
Answer Explanation
This is a single replacement reaction in which copper replaces silver. The copper combines with the nitrate ions, and the silver precipitates out. Single replacement reactions have the general form of
A + BC →
AC + B. Double replacement reactions have the general form of AB + CD→
AD + CB. Synthesis reactions have the general form of A + B →
AB. Decomposition reactions have the general form AB→
A+B.
