Biology 1.3, 2.1, & 2.2 Quiz

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Biology

the study of "life" & science of living things

Cell

the basic unit of life

Unicellular organisms

organisms that are made of only 1 cell (ex: bacteria)

Multicellular Organisms

organisms that begin as one cell but as adults are made of many cells

Made of Cells, reproduce, based on a universal genetic code, grow & develop, obtain & use materials& use energy, respond to their environment, maintain a stable internal environment, as a group change over time

8 characteristics of ALL LIVING THINGS

Sexual Reproduction

this type of reproduction combines genetic material from 2 parents (seen in animals & plants) sperm+egg=baby

Asexual Reproduction

this type of reproduction makes a new organism using the genetic material from only 1 parent (seen in bacteria, plants, & some animals)

DNA

heredity material, aka _________

Gene

a segment of DNA with instructions for one protein

Single Celled Organisms

these types of organisms grow by increasing in size

Multicellular Organisms

these types of organisms grow bigger by increasing cell size AND increasing cell number; they don't just contain MANY cells, but many different kinds of cells w/ different functions

DNA

all cells have the same _________

Stem cells

type of cells that can become any kind of cell

Building materials & energy

to grow & develop, organisms need a constant supply of...

Autotrophs

another name for plants

Autotrophs

__________ use energy from sunlight or chemicals to make their own food

Heterotrophs

another name for animals

Heterotrophs

_________ get their energy by consuming other organisms

Metabolism

the combination of all the chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes

Homeostasis

a cell works to keep conditions inside the cell constant is ____________; involves internal feedback mechanisms (shiver to warm up/ sweat to cool down)

Stimulus

a signal to which an organism responds

Evolution

as a group change over time = ____________; allows for survival of species in a changing world

DNA

the genetic molecule common to all living things

Evolution

the internal process of __________ enables living things to survive to changing conditions

Stimuli

Living things are capable of responding to different types of _________

Sexual & Asexual

The continuation of life depends of both ___________ & ____________

Metabolism

the combination of chemical reactions that make up an organism's ___________ help to organize raw materials into living matter

Cellular basis of life

big idea; living things are made of cells

Information & Heredity

big idea; living things are based on a universal genetic code (DNA)

Matter & Energy

big idea; life requires matter that provides raw materials, nutrients, & energy

Growth, development, & reproduction

big idea; all living things reproduce

Homeostasis

big idea; living things maintain a relatively stable internal environment

Structure & Function

big idea; each major group of organisms has evolved structures that make particular functions possible

Evolution

big idea; taken as a group, living things evolve

Unity & Diversity of Life

big idea; all living things are fundamentally similar at the molecular level

Interdependence in Nature

big idea; all forms of life on Earth are connected into a biosphere--a living planet

Science as a way of knowing

big idea; job of science is to use observations, questions, & experiments to explain the natural world

Metric System

the system of measurement that most scientists use when collecting data & doing experiments

Atom

a chemical element is a pure substance that consists entirely of one type of ________

Isotopes

atoms of the same element that differ in the number of neutrons they contain

Electrons

an atom is make up of protons, neutrons, & _________

Chemical Compound

a substance formed by the chemical combination of 2 or more elements in definite proportions

Ionic Bond

type of bond formed when one or more electrons are transferred from one atom to another

Covalent Bond

type of bond formed when electrons are shared by atoms

Chemical bonds

metabolism breaks down___________ ________

Polar

water is a _________ molecule

Cohesion

hydrogen bonds are an example of ___________

High

Covalent bonds give water a _____ heat capacity

Weaker

a hydrogen bond is __________ than a covalent bond

Cohesion

attraction between molecules of the same substance

Adhesion

a force of attraction between different kinds of molecules

Mixture

physical combination of 2 or more substances

Solute

substance that is dissolved

Solvent

the substance doing the dissolving

Suspension

mixture of water & non dissolved substance

Solution

all components are evenly distributed throughout the __________

Concentration of H+ ions

what does the pH scale measure?

Remove H+ ions

how would you buffer a solution that has a pH of 12?

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