TEAS SCIENCE STUDY GUIDE PART ONE Flashcards
What is a hypothesis?
an explanation formulated to answer the question being investigated.
What are the steps of forming a hypothesis?
- Identify the problem
- Ask questions
- Form hypothesis
What are the steps of the scientific method?
- Identify the problem
- Ask questions
- form hypothesis
- Data collection and experimentation
- Analysis
- Conclusion
What is data collection?
collection of data to test the hypothesis in a controlled environment.
What are the 4 steps of data collection?
observation
measurement
samples
organization
What is observation?
scientists use the 5 senses to learn as much as possible during data collection.
What is measurement?
collection of quantitative data
What are samples?
scientists obtain data from a subset of the population
What is organization?
placing information into tables and charts
What is experimentation?
Comparing a control group and an experimental group
What is analysis?
Researchers must determine if the data is reliable and whether or not it supports the hypothesis
What is conclusion?
scientists produce models to represent the explanation supported by the data.
What is a theory?
a broad statement of what is thought to be true
If the results of a experiment cannot be duplicated,
the argument loses its credibility.
What is deductive reasoning?
a method whereby conclusions follow general principles
What is inductive reasoning?
a method of arriving at general principles from specific facts.
I observed the sun setting this evening.
I have observed the sun setting daily, hundreds of times in my lifetime.
Based on these two statements, what general conclusion can be drawn?
Inductive reasoning can be used to conclude that the sun sets every day.
All men are mortal.
Sultan is a man.
Based on these two statements, what general conclusion can be drawn?
Deductive reasoning can be used to conclude that Sultan is a mortal.
What is anatomy?
study of the structure of organs and body systems
What is physiology?
the study of the function of the organ and body systems
What are atoms?
the smallest parts of elements that still retain all the original properties of the element.
What is a molecule?
chemical bonding of atoms that possesses its own characteristics independent of the atoms themselves.
What are cells?
the basic unit of all life
What are tissues?
when cells combine in terms of function and type
What is a organ?
when two or more tissues work together to perform a specific function
What is an organ system?
when organs work together to perform a specific task
How many organ systems are there in the human body?
11
What is the hierarchy of the structures in the human body from smallest to largest?
Atoms Molecules Cells Tissues Organs Organ Systems Organism
What are the four basic tissue types in humans?
epithelial
connective
muscle
nervous
What are the two functions of epithelial tissue?
provides covering
produces secretions
Does epithelial tissue have its own blood supply?
no
Epithelial tissue is usually arranged in
sheets
How does epithelial tissue obtain food and oxygen?
diffusion from nearby capillaries
If well nourished, epithelial tissue can
regenerate easily
Epithelial tissues are classified by
number of cell layers
cell shape
Simple epithelium contains
one layer of cells
What types of body structures would you find simple epithelium?
structures where absorption, secretion and filtration occur.