Chapter 1

Metabolism (a) is the sum of all the chemical activities of an organism (b) results from an increase in the number of cells (c) is characteristic of plant and animal kingdoms only (d) refers to chemical changes in an organism's environment (e) does not take place in producers

Homeostasis (a) is the tendency of organisms to maintain an appropriate, balanced internal environment (b) generally depends on the action of cilia (c) is the long-term response of organisms to changes in their environment (d) occurs at the ecosystem level, not in cells or organisms (e) may be sexual or asexual

Structures used by some organisms for locomotion are (a) cilia and nuclei (b) flagella and DNA (c) nuclei and membranes (d) cilia and sessiles (e) cilia and flagella

The splitting of an amoeba into two is best described as an example of (a) locomotion (b) neurotransmission (c) asexual reproduction (d) sexual reproduction (e) metabolism

Cells (a) are the building blocks of living organisms (b) always have nuclei (c) are not found among the bacteria (d) answers a, b, and \(c\) are correct (e) only answers a and b are correct

An increase in the size or number of cells best describes (a) homeostasis (b) biological growth (c) chemical level of organization (d) asexual reproduction (e) adaptation

DNA (a) makes up the genes (b) transmits information from one species to another (c) cannot be changed (d) is a neurotransmitter (e) is produced during cellular respiration

Cellular respiration (a) is a process whereby sunlight is used to synthesize cell components with the release of energy (b) occurs in heterotrophs only (c) is carried on by both autotrophs and heterotrophs (d) causes chemical changes in DNA (e) occurs in response to environmental changes

Which of the following is a correct sequence of levels of biological organization? (a) cell, organ, tissue, organ system (b) chemical,cell, organ, tissue (c) chemical, cell, tissue, organ (d) tissue, organ, cell, organ system (e) chemical, cell, population, species

Which of the following is a correct sequence of levels of biological organization? (a) organism, population, ecosystem, community (b) organism, population, community, ecosystem (c) population, biosphere, ecosystem, community (d) species, population, ecosystem, community (e) ecosystem, population, community, biosphere

Protozoa are assigned to kingdom (a) Protista (b) Fungi (c) Archaebacteria (d) Animalia (e) Plantae

Yeasts and molds are assigned to kingdom (a) Protista (b) Fungi (c) Archaebacteria (d) Animalia (e) Plantae

In the binomial system of nomenclature, the first part of an organism's name designates the (a) species epithet (b) genus (c) class (d) kingdom (e) phylum

Which of the following is a correct sequence of levels of classification (a) genus, species, family, order, class, phylum, kingdom (b) genus, species, order, phylum, class, kingdom (c) genus, species, order, family, class, phylum, kingdom (d) species, genus, family, order, class, phylum, kingdom (e) species, genus, order, family, class, kingdom, phylum

Darwin suggested that evolution takes place by (a) mutation (b) changes in the individuals of a species (c) natural selection (d) interaction of hormones (e) homeostatic responses to each change in the environment

A testable statement is a(an) (a) theory (b) hypothesis (c) principle (d) inductive leap (e) critical question

Ideally, an experimental group differs from a control group (a) only with respect to the hypothesis being tested (b) only with respect to the variable being studied (c) by being less subject to bias (d) in that it is less vulnerable to sampling error (e) in that its subjects are more reliable