Biology Forums - Study Force

1) All of the following geologic time intervals are characterized correctly EXCEPT
(A) Cambrian period...age of birds
(B) Carboniferous period...age of amphibians
(C) Devonian period...age of fishes
(D) Cenozoic era...age of mammals
(E) Mesozoic era...age of dinosaurs

Which of the following correctly identifies the constituents of an atom of the isotope 53131/53 I
(A) 53 Protons | 78 Neutrons | 78 Electrons
(B) 78 Protons | 53 Neutrons | 78 Electrons
(C) 53 Protons | 78 Neutrons | 53 Electrons
(D) 78 Protons | 131 Neutrons | 78 Electrons
(E) 131 Protons | 53 Neutrons | 53 Electrons



The study of which of the following would likely be the most helpful in providing information about the composition of Earth’s upper mantle?
(A) Temperatures of hot springs
(B) Size of vesicles in basalt flows
(C) Xenolith inclusions in igneous rocks
(D) Carbonate sediments from the ocean floor
(E) Minerals formed through contact metamorphism

Which of the following are found in greater number in the nuclei of carbon-14 atoms than in the nuclei of carbon-12 atoms?
(A) Alpha particles
(B) Positrons
(C) Neutrons
(D) Protons
(E) Electrons

Which of the following best describes antibiotic resistance?
(A) It is a condition that causes humans to become resistant to antibiotics.
(B) It is caused by overuse of antibiotics, which allows for the selection of resistant bacteria.
(C) It causes organisms to contract viral infections.
(D) It is a problem only in developing countries.
(E) It is a treatment for infections that results in a resistant immune system in an organism.

Which of the following is true about a sinking parcel of air?
(A) It will decrease in pressure.
(B) It will expand and cool.
(C) It will be unstable.
(D) It will compress and warm.
(E) It will form clouds.

Which of the following is true about vitamins?
(A) Vitamins are proteins.
(B) Vitamins cannot be digested.
(C) Animals need vitamins in large amounts.
(D) Animals synthesize the essential vitamins.
(E) Vitamins are required for certain chemical reactions.

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Marked as best answer, would appreciate if you could post 1 question per thread