A subatomic particle that has one positive charge and is located in the nucleus is a neutron.

a. true
b. false


Answer: b. false

Biology & Microbiology

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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

Biology & Microbiology

The choanoflagellates are in the supergroup:

A. Opisthokonta B. Rhizaria C. Amoebozoa D. Stramenopila E. Alveolata

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology