Bio Quiz 1

¡Supera tus tareas y exámenes ahora con Quizwiz!

What does polar mean?

A molecule with regions having different charges

Enzyme-catalyzed reactions are prevented from occured at a rapid rate at all times by the presence of an _____ energy barrier

Activation

The element _____ is found in all living organisms

Carbon

_______ evidence for hypotheses consist of individual's claims about "what worked for them" and is not equivalent to research published in journals

Anecdotal

Water can dissolve other ____ molecules

Polar, or hydrophilic

Protons have a ____ charge Neutrons have a _____ charge Electrons have a _____ charge

Positive Neutral Negative

The ____ metabolic rate is the energy use of a resting wakeful person

Basal

Experimental _____ occurs when a researcher's expectation affects data collection

Bias

pH means...

Power of Hydrogen

Statistical significance is not the same as "______ significance"

Practical

Deductive reasoning relies on testing the ______ of a hypothesis test

Predictions

Research reports describing the outcome of a hypothesis test published in scientific journals are referred to as ____ sources

Primary

A statistically significant result is one that has a low ____ of having occurred as a result of chance

Probability

What is a hypothesis?

Proposed explanation for how things work?

Enzymes are a type of ___ that speed up, or ____, chemical reactions in cells

Proteins; catalyze

If a hypothesis test returns the predicted results, the hypothesis is supported but not definitively _____

Proven

Experiments are performed on a small subgroup, or _______ of the population of interest

Sample

Instead of reading primary literature, most of us receive our scientific information from ______

Secondary sources

What are covalent bonds?

Shared pair of electrons

What is a hydrogen bond?

Weak attraction between hydrogen of one molecule and electronegative atom of another molecule

What are ionic bonds?

When electrons are transferred between positively and negatively charged ions (either gains or looses)

Hypotheses are ____ and specific/general

educated guesses and SPECIFIC

Theories are ____ and specific/general

well supported and GENERAL

T/F: Enzymes are specialized to catalyze a specific reaction

True!

What are confidence intervals?

Variation around the mean

Water moderates....

temperature

Water is a good solvent/solute Why?

-Solvent (solutes are dissolved in this) -Because it is polar!

A statement that is "falsifiable" must be able to be...

...proven false

A correlation between two factors does not necessarily mean that one factor _____ a change to the other factor

Causes

The basic structural unit of all living things

Cells

A statistical test calculates the likelihood that the difference between an experimental and control group is due simply to _____

Chance

Ions are charged/uncharged and have an equal/unequal number of protons and electrons

Charged; Unequal

What is metabolism?

Chemical reactions that produce and use energy

Bacteria, nematodes, and mice are model systems that allow us to perform ______ experiments on hypotheses that are difficult to test on humans

Controlled

CH₄ is an example of a(n) _____ bond

Covalent

Metabolic rate measures your...

Energy use

A control is an experiment is a subject that is treated identically to the experimental subject except that the _____ is not applied

Experimental treatment

Carbon has _____ unpaired electrons

Four

The intent in a controlled experiment is to eliminate as many alternative _____ as possible

Hypotheses

More acidic, more ____

H⁺

Water can dissociate into __ and ___ ions

H⁺ and OH⁻

A change in shape of the active site of an enzyme so that it binds tightly to a substrate is called...

Induced fit

Inductive vs deductive reasoning

Inductive: Observations used to draw a conclusion Deductive: If/then

Na⁺Cl⁻ is an example of a(n) ____ bond

Ionic

News stories are less likely to be written about research that provides ____ supportive results of a hypothesis test

Less

A statement that is "testable" must be able to be evaluated through ________ of the known universe

Measurements

Carbon can make bonds with many other elements to produce more complex _____

Molecules

More basic, more ____

OH⁻

Which part of water is more elctronegative?

Oxygen

Pulling electrons closer to an atom produces ____ charges

Partial

Scientific papers are not published in most journals until after they have undergone the process of ____ review by other scientists in the field

Peer

Laws are...

Something that always occurs in nature

_________ is used to evaluate data

Statistics

____ are the substances upon which an enzyme reacts

Substrates

Activation energy is...

The energy required to start the metabolic reaction

Active sites are...

The region of the enzyme where the substrate binds

What is homeostasis?

The steady-state condition an organism works to maintain


Conjuntos de estudio relacionados

Ch. 2 The World Trade Organization and the World Trade System

View Set

Ch 50: Disorders of Musculoskeletal Function (Rheumatic Disorders)

View Set