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Chap. 1 Quiz
Knowledge of biological concepts is a vital tool for understanding the challenges that confront modern society. Some of the more important challenges are?
a)expanding human pop.
b)decreasing biological diversity
c)diminishing natural resources
d)global climate change
e)prevention and cure of diseases
The 3 basic themes of biology are?
The characteristics of life include?
a) a precise kind of organization
b) growth and development
c) self-regulated metabolism
d)ability to respond to stimuli
f) adaptation to environmental change
Organisms can be? 2
unicellular and multicellular
The 2 major cell types are?
prokaryotic and eukaryotic
Living things grow by increasing _______ of cells or both.
______ is a term that encompasses all the changes that occur during the life of an organism.
Metabolism can be described as the sum of all the ______ that take place in the organism.
_____ is the tendency of organisms to maintain a balanced internal environment.
Physical or chemical changes in an internal or external environment that evoke a response from all life forms are called?
We know that organisms come from previously existing organisms as a result of scientists like Francesco Redi in the 17th century and ______ in the 19th century.
In general, living things produce in one of two ways.
Asexual and sexual reproduction
Inherited characteristics that enhance an organisms ability to survive in a particular environment
Biologists learn about living things using ______ to study their parts.
_______ also help biologists see what characteristics are new at a higher level of organization.
The simplest component of life is the?
All of the ecosystems on Earth are collectively referred to as the?
All of the members of one species that live in the same geographic area make up a _____?
The 2 scientists credited with working out the structure of DNA are:
James Watson and Francis Crick
______ are large molecules important in determining the structure and function of cells and tissues.
______ are units of hereditary material.
All the energy transformations and chemical processes that occur in organisms are referred to as:
______ is the process by which molecular energy is released to do cellular work.
A self-sufficiant ecosystem contains three major catigories of organisms:
producers, consumers, decomposers
Organisms that can produce their own food from simple raw materials are called?
producers or autotrophs
Populations change over time via:
The science of classifying and naming organisms is
The simplest category of classification is the
The scientific name (binomial) of an organism consists of the ______ names for that organism?
genus and species
Families are grouped into?
The broadest of the taxonomic groups is the
The 3 domains of life are ____,____, and _____, which includes plants, protists, animals, and fungi.
The _____ have been broken up into 5 supergroups based on molecular analysis
Adaptations to environmental change occur due to
Charles Darwin's famous book, "___________", published in 1859, still has an impact on biological science today.
On the Orgin of Species by Natural Selection
The source of variation is _____ which occurs in _____.
mutation and DNA
All the genes in a population make up its
Natural Selection favors organisms with traits that enable them to effectively respond to ____.
pressures exerted by the environment
The ______ is a system of observation, question, hypothesis, experiment, data, analysis, and revised hypothesis.
With _____ reasoning, one draws conclusions from specific observations.
With _____ reasoning, one begins with supplied information or premises and draws conclusions based on those premises.
In 1928, bacteriologist _______ discovered the antibiotic, penicillan, but could not grow the antibiotic producing organism.
Significant discoveries are usually made by those who are in the habit of looking critically at nature and recognizing a ______.
phenomenon or problem
The characteristics of a good hypothesis include being _____, ______, and _____.
a)reasonably consistant with well-established facts
b)capable of being tested
A hypothesis cannot be?
______ are becoming very useful in hypothesis development.
An experimental group differs from a control group only with respect to the ______ being studied
In a _____, neither the patient nor the physician knows who is getting the experimental drug and who is getting the placebo.
Sampling errors can lead to inaccurate conclusions because
not all cases of what is being studied can be observed or tested
_______ are strengthened when other's repeat a scientist's work.
A _______ is an integrated explanation of a number of hypotheses, each supported by consistent results from many observations or experiments.
Two examples of hypotheses that cannot be tested by direct experiment include:
The Big Bang Theory
evolution of complex organisms
A ______ is a set of assumptions or concepts that constitute a way of thinking about reality.
Biologists that integrate data from various levels of complexity with the goal of understanding the big picture are know as:
Some of the more controversial areas of scientific inquiry with important ethical dimensions include:
b)stem cell research
d)human and animal experimentation
Populations of different species that live in the same geographical area at the same time.
The broadest category of classification used.
The science of naming, describing, and classifying organisms.
Hairlike structures that project from the surface of some cells and are used by some organisms for locomotion.
A physical or chemical change in the internal or external environment of an organism potentially provoking a response.
A group of tissues that work together to carry out specific functions