Take a group of closely related species that vary in the average number of males a sin-gle female will mate with
What pattern would you expect, given the results of studies from the literature, if you measured sperm competition in each of the species?
a. Sperm competition will show a positive relationship to the number of males per female.
b. Sperm competition will show a negative relationship to the number of males per female.
c. Sperm competition will show no relationship to the number of males per female.
d. Cannot make a prediction with the information given.
A
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Match the following items with the correct phrases.
_______1. _______________ are chemotrophs that use inorganic chemicals as their energy source. _______2. Organisms that use organic compounds as their source of carbon are called ____________________. _______3. Organisms that use organic compounds as their energy source are called ____________________. _______4. Organisms that use carbon dioxide as their source of carbon are called ____________________. _______5. Organisms that use light as their energy source are called ____________________. a. autotrophs b. heterotrophs c. lithotrophs d. organotrophs e. phototrophs
The figure above represents ____
a. an exergonic reaction b. a metabolic pathway c. allosteric inhibition d. allosteric regulation e. an endergonic reaction
A eukaryotic gene is observed to make multiple forms of a protein. How can one eukaryotic gene produce multiple products in the same cell?
A) Alternative splicing sites can lead to the production of two different mature mRNAs from the same gene, resulting in slightly different proteins. B) Epigenetic changes can change the sequence of amino acids in a protein. C) Translation rates can affect the length of the polypeptide made from the same mRNA. D) Silencer genetic elements can cause early termination of transcription, leading to the production of multiple mature mRNAs from the same gene. E) One gene equals one protein, so this observation must be incorrect.
Which of the following statements is contrary to the first law of thermodynamics?
a. When energy is used, it is irreplaceable. b. Matter can be converted into energy. c. The amount of energy in the universe is constant. d. Energy can be converted from one form to another. e. Energy can be transferred from one form to another.