Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

12 Cards in this Set

  • Front
  • Back
What are the levels of organization in Human Biology?
CELL, is the smallest unit of life.
TISSUE, group cells that work together to do a particular function.
ORGANS, a group of tissues that work together to do a particular function such as heart, pancreas, intestines.
ORGAN SYSTEM, 2 or more organs working together to do a particular function like the digestive, respiratory or nervous system.
ORGANISM, (itself) Individual living thing.
POPULATION, A group of organisms of same species in same place.
COMMUNITY, A group of population of different species.
ECOSYSTEM, All the organisms in a given area plus all the nonliving matter and energy.
BIOSPHERE, All ecosystems combined. Occupied by living organisms, plus those organisms.
What are the types of cells that exist in the living world?
1)Prokaryote: Organisisms that lack a nucleus; a single-celled organism, such as bacteria.

2) Eukaryote: Organisms made of cells with a nucleus and internal membrane-bound organelles. Animals, plants, protists and fungi are eukaryotes.
What are the classifications or domains of the living world?
I- Eukarya
Organisms whose cells have a nuclei. Eukaryote cells can be multi-cellular or unicellular. Eukarya consists of Plants, animals, fungi, and protists.
II- Eubacteria
Single-celled prokaryotic organisms in the kingdom Monera, which consists of bacteria, the most simplest, smallest successful organisms on Earth.
III- Archaea
Also single-celled prokaryotes.
How would we classify the eukaryote in the Domain Eukarya?
Animals, plants, and Fungi, consist of multicellular organisms. Classifications is largely based on the organism's life cycle, structure, and the way it gets nutrition.

Are multicellular, eats other organisms and is mostly mobile.

Are multicellualar, has green pigment called chlorophyll that captures the sun's energy and converts it into food through a process called photosynthesis.

(yeasts, molds, & mushrooms) are decomposers, gets energy from rotting material.

(protozoa, algae, and slime molds)
What features make humans unique?
Describe 4.
1) Complex language. Humans have both verbal and written language.

2) Bipedalism. Humans walk on 2 feet.

3) Opposable thumbs. Allows for humans to make use of hands in a very precise manner.

4) Larger brain size (3lb). Gives humans more capacity to think.
What are some characteristics of life?
1- composed of cells.
2- reproduce/grow.
3- energy and raw materials are needed to live.
4- evolve.
5- made of DNA.
6- Responds to its' environment.
What is the definition of Science?
Science is the study of the natural world, which includes all matter and all energy.
Where does the word Biology come from and what does it mean?
Biology comes from the Greek words bios: life & logos: science. Biology is the study of living organisms and life's processes. It is the study of life.
What is a cell?
It is the smallest unit that shows all the characteristics of life. All cells come from only existing cells.
unicellular = one cell.
multicellular = many cells and even many different types of cells.
What is the Scientific Method?
The Scientific method is a way of testing statements about the natural world (hypothesis) by trying to prove them false.
What are the 4 steps of the Scientific Method and what do they mean?
Step 1-
Observe and Generalize.
Step 2-
Write a hypothesis. A hypothesis is a tentative explanation for a question that can be tested.
Step 3-
Make a prediction that can be tested. A prediction is a guess to your question that can use "If...then" statement.
Step 4-
Experiment and observe. If experiment works than hypothesis is supported if it doesn't than another hypothesis must be written.
What is a controlled experiment?
A controlled experiment are tests that are controlled under specific conditions where all variables are accounted for. Only one variable, which is the one of interest, is controlled.