NAS2 Challenge Exam with correct
answers
Purpose of Scientific Method - ....🔰VERIFIED ANSWERS.... ✔✔solve a
problem or answer a question
Question, Hypothesis, Experiment, Observe & Record, Analyze, Conclude
- ....🔰VERIFIED ANSWERS.... ✔✔steps of scientific method
Independent variable - ....🔰VERIFIED 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 - ....🔰VERIFIED 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 - ....🔰VERIFIED ANSWERS.... ✔✔does not receive treatment
and used to compare or measure the other subjects
experimental group - ....🔰VERIFIED ANSWERS.... ✔✔exposed to changes in
independent variable
,anatomy - ....🔰VERIFIED ANSWERS.... ✔✔branch of science concerned with
bodily structure of living organisms; structure
physiology - ....🔰VERIFIED ANSWERS.... ✔✔science dealing with the
functions of living things or their organs
level of organization - ....🔰VERIFIED 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 - ....🔰VERIFIED ANSWERS.... ✔✔Cellular organization
Reproduction
Metabolism
Homeostasis
Heredity
Response to stimuli
Growth and development
, Adaptation through evolution
survival needs - ....🔰VERIFIED ANSWERS.... ✔✔Food, oxygen, water, body
temperature, atmospheric pressure (oxygen/carbon dioxide exchange)
homeostasis - ....🔰VERIFIED ANSWERS.... ✔✔relatively constant internal
physical and chemical conditions that organisms maintain
receptor - ....🔰VERIFIED ANSWERS.... ✔✔senses environmental stimulus
and sends info to control center
control center - ....🔰VERIFIED ANSWERS.... ✔✔hypothalamus
signals effector
effector - ....🔰VERIFIED ANSWERS.... ✔✔responds to stimuli
example: muscle contracting
negative feedback mechanisms - ....🔰VERIFIED ANSWERS.... ✔✔net effect is
that the original output of the system shuts off the original stimulus or reduces
the intensity
homeostasis
negative feedback mechanisms - ....🔰VERIFIED ANSWERS.... ✔✔most
common form of homeostasis, bringing people back to normal functioning
answers
Purpose of Scientific Method - ....🔰VERIFIED ANSWERS.... ✔✔solve a
problem or answer a question
Question, Hypothesis, Experiment, Observe & Record, Analyze, Conclude
- ....🔰VERIFIED ANSWERS.... ✔✔steps of scientific method
Independent variable - ....🔰VERIFIED 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 - ....🔰VERIFIED 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 - ....🔰VERIFIED ANSWERS.... ✔✔does not receive treatment
and used to compare or measure the other subjects
experimental group - ....🔰VERIFIED ANSWERS.... ✔✔exposed to changes in
independent variable
,anatomy - ....🔰VERIFIED ANSWERS.... ✔✔branch of science concerned with
bodily structure of living organisms; structure
physiology - ....🔰VERIFIED ANSWERS.... ✔✔science dealing with the
functions of living things or their organs
level of organization - ....🔰VERIFIED 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 - ....🔰VERIFIED ANSWERS.... ✔✔Cellular organization
Reproduction
Metabolism
Homeostasis
Heredity
Response to stimuli
Growth and development
, Adaptation through evolution
survival needs - ....🔰VERIFIED ANSWERS.... ✔✔Food, oxygen, water, body
temperature, atmospheric pressure (oxygen/carbon dioxide exchange)
homeostasis - ....🔰VERIFIED ANSWERS.... ✔✔relatively constant internal
physical and chemical conditions that organisms maintain
receptor - ....🔰VERIFIED ANSWERS.... ✔✔senses environmental stimulus
and sends info to control center
control center - ....🔰VERIFIED ANSWERS.... ✔✔hypothalamus
signals effector
effector - ....🔰VERIFIED ANSWERS.... ✔✔responds to stimuli
example: muscle contracting
negative feedback mechanisms - ....🔰VERIFIED ANSWERS.... ✔✔net effect is
that the original output of the system shuts off the original stimulus or reduces
the intensity
homeostasis
negative feedback mechanisms - ....🔰VERIFIED ANSWERS.... ✔✔most
common form of homeostasis, bringing people back to normal functioning
