Exam (elaborations)
NAS2 CHALLENGE EXAM QUESTIONS AND ANSWERS
- Course
- Institution
NAS2 CHALLENGE EXAM QUESTIONS AND ANSWERS
[Show more]
Content preview
NAS2 CHALLENGE EXAM QUESTIONS AND ANSWERSPurpose of Scientific Method - Answers -solve a problem or answer a question
Question, Hypothesis, Experiment, Observe & Record, Analyze, Conclude - Answers -
steps of scientific method
Independent variable - Answers -a variable that stands alone and isn't changed by the
other variables you are trying to measure, change or controlled
example: age
dependent variable - Answers -a variable dependent on other factors, tested or
measured
example: test score - factors that go into a score you receive on a test
control group - Answers -does not receive treatment and used to compare or measure
the other subjects
experimental group - Answers -exposed to changes in independent variable
anatomy - Answers -branch of science concerned with bodily structure of living
organisms; structure
physiology - Answers -science dealing with the functions of living things or their organs
level of organization - Answers -living things arranged from the simplest to most
complex are:
organelle
cells
tissues
organs
organ systems, organism
populations communities
ecosystem
biosphere
requirements for life - Answers -Cellular organization
Reproduction
Metabolism
Homeostasis
Heredity
Response to stimuli
Growth and development
Adaptation through evolution
, survival needs - Answers -Food, oxygen, water, body temperature, atmospheric
pressure (oxygen/carbon dioxide exchange)
electron - Answers -negatively charged particle, outer shell
proton - Answers -positive, in nucleus
number of protons - Answers -number of electrons is equal to the same...
number of protons - Answers -atomic number is equal to...
atomic mass - Answers -sum of protons and neutrons in the nucleus
the weighted average mass of isotopes of an element, found below the element symbol
ionic bond - Answers -chemical bond formed between two ions that are opposite
charges, atom gives up one or more electrons to another atom
covalent bond - Answers -sharing electron pairs between atoms
polar covalent bond - Answers -pair of electrons unequally shared between two atoms
nonpolar covalent bond - Answers -two atoms share a pair of electrons with each other
hydrogen bond - Answers -weak bond result of attraction between proton and
electronegative atom of another
enzymes - Answers -catalyze chemical reactions by lowering activation energy barriers
and converting substrate molecules to products
substrate - Answers -reactant acted upon by an enzyme
enzymes active site binds to this
active site - Answers -part of an enzyme to which substrates bind and where a reaction
is catalyzed
enzymes - Answers -promote chemical reactions by bringing substrates together in an
optimal orientation, thus creating an ideal chemical environment for the reaction to
occur
always return to original state
decomposition - Answers -single compound breaks down into two or more elements or
new compounds
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller GEEKA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79650 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now