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BIOL 1021 Exam 1 Prep questions with correct answers 2024/2025
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BIOL 1021 Exam 1 Prep questions with correct answers 2024/2025
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BIOL 1021 Exam 1 PrepA new insect pest infects several rice fields which are also used for growing crawfish. In an
experiment, out of six fields of the same size three fields are treated with an insecticide and
three are not. The researcher wants to know how the insecticide impacts the crawfish
population.
What is the null hypothesis? - ANSThere is no difference among treated and untreated
fields.
A new insect pest infects several rice fields which are also used for growing crawfish. In an
experiment, out of six fields of the same size three fields are treated with an insecticide and
three are not. The researcher wants to know how the insecticide impacts the crawfish
population.
What is the hypothesis? - ANSThere is a difference among treated and untreated fields.
A new insect pest infects several rice fields which are also used for growing crawfish. In an
experiment, out of six fields of the same size three fields are treated with an insecticide and
three are not. The researcher wants to know how the insecticide impacts the crawfish
population.
What is the independent variable? - ANSHow the fields are treated - with insecticide or not.
A new insect pest infects several rice fields which are also used for growing crawfish. In an
experiment, out of six fields of the same size three fields are treated with an insecticide and
three are not. The researcher wants to know how the insecticide impacts the crawfish
population.
What is the dependent variable? - ANSThe number of crawfish.
A new insect pest infects several rice fields which are also used for growing crawfish. In an
experiment, out of six fields of the same size three fields are treated with an insecticide and
three are not. The researcher wants to know how the insecticide impacts the crawfish
population.
What is the negative control? - ANSThe fields that are not treated with insecticide.
A new insect pest infects several rice fields which are also used for growing crawfish. In an
experiment, out of six fields of the same size three fields are treated with an insecticide and
three are not. The researcher wants to know how the insecticide impacts the crawfish
population.
What is the positive control? - ANSThere is no positive control in this experiment.
Negative feedback - ANSThe end products stop the production of the starting products.
Ex. sweating regulates high body temperature, counteraction
Positive feedback - ANSThe end products increase the production of the starting products.
Has no effect on maintaining homeostasis.
Ex. Fever due to a bacterial infection
, The properties of life include - ANSEnergy processing, evolutionary adaptation, growth and
development, order, regulation, and reproduction.
The three domains of life are - ANSBacteria, Archaea, Eukarya
Bacteria and Archaea are - ANSProkaryotes
All eukaryotic organisms such as plants, animals and fungi are - ANSEukarya
The most numerous and diverse eukarya are - ANSProtists, unicelluar organisms that
evolved from prokaryotes
Evolution - ANSThe concept that the organisms living on earth today are the modified
descendants of common ancestors
Unity of life - ANSAll life originates from a common ancestor
Diversity of life - ANSNew species evolving from others
Natural selection - ANSIndividuals that are best suited to their environment are more likely to
survive
Data - ANSRecorded observations
Qualitative data - ANSRecorded descriptions
Quantitative data - ANSNumerical measurements such as tables and graphs
Inductive reasoning - ANSSpecific to general
Ex. "the sun rises in the east and sets in the west"
Deductive reasoning - ANSGeneral to specific
Ex. There is no other explanation
Hypothesis (H1) - ANSThis is what you are testing for. States there is a significant difference
between treatment and (negative) control.
Null hypothesis (H0) - ANSStates there is no difference between treatment and (negative)
control. Can't be proven, only disproved.
Significant - ANSShown there is a less than 5% chance for the outcome to occur by chance
alone
Independent variable - ANSCan be manipulated
Dependent Variable - ANSWhat is predicted to be affected in response to the independent
variable.
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