A subatomic particle that has one positive charge and is located in the nucleus is a neutron.
a. true
b. false
Answer: b. false
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Enzymes _____
A) increase the rate of a reaction by making the reaction more exergonic B) increase the rate of a reaction by lowering the activation energy barrier C) increase the rate of a reaction by reducing the rate of reverse reactions D) change the equilibrium point of the reactions they catalyze E) make the rate of a reaction independent of substrate concentrations
The choanoflagellates are in the supergroup:
A. Opisthokonta B. Rhizaria C. Amoebozoa D. Stramenopila E. Alveolata
A population of birds migrating to winter nesting grounds is blown off course by a late-season hurricane and ends up on an island that is uninhabited by any animal species
Which of the following represents a density-independent factor that will limit the population size? A) Abundant fruit trees B) Heavily wooded C) Freshwater spring D) Abundant berry bushes E) Nightly temperature dropping below freezing
The term autotroph refers to an organism that
A. must obtain organic compounds for its carbon needs. B. gets energy by oxidizing chemical compounds. C. does not need a carbon source. D. gets energy from sunlight. E. uses CO2 for its carbon source.