the combination of chemical reactions through which an organism builds up or breaks down materials

relatively constant internal physical and chemical conditions that organisms maintain

in cells, structure that contains the cell's genetic material in the form of DNA

the center of the atom, containing protons and neutrons

Pure substance that consists entirely of one type of atom

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

Atom that has a positive or negative charge

Smallest unit of most compounds that displays the properties of that compound

Negatively charged particle: located in the space surrounding the nucleus

One of several forms of a single element, which contains the same number of protons but a different number of neutrons

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

Type of Bond between atoms in which the electrons are shared

Slight attractions that develops between oppositely charged regions of nearby molecules

a compound that produces hydroxide ions (OH-) in solution: a solution with a pH of more than 7

small chemical unit that makes up a polymer

compound made up of CARBON, HYDROGEN, AND OXYGEN atoms, type of nutrient that is the major source of energy for the body

Subunit of which nucleic acids are composed, made up of 5-CARBON sugar, a PHOSPHATE group and a NITROGENous base

Macromolecule that contains CARBON, HYDROGEN, OXYGEN and NITROGEN, needed by the body for growth and repair. muscle growth, immune system

A compound that prevents sharp, sudden spikes in pH

molecules composed of many monomers, makes up macromolecules

Macromolecule made mostly from CARBON and HYDROGEN atoms, fats oils and waxes

Macromolecules containing HYDROGEN, OXYGEN, NITROGEN, CARBON AND PHOSPHOROUS

Compound with an amino group on one end and a carboxyl group on the other

Process that changes, or transforms, one set of chemicals into another

Elements or compounds produced by a chemical reaction

Substance that speeds up the rate of a chemical reaction

Reactant of an enzyme-catalyzed reaction

elements or compounds that enter into a chemical reaction

Energy that is needed to get a reaction started

Protein catalyst that speeds up the rate of specific biological reactions

Weak attraction between a hydrogen atom and another atom

Force of attraction between different kinds of molecules

Type of mixture in which all the components are evenly distributed

dissolving substance in a solution

scale with values from 0-14, used to measure the concentration of H+ ions in a solution; pH of 0-7 is acidic, 7 is neutral and 7-14 is basic

Attraction between molecules of the same substance

material composed of 2 or more element or compounds that are physically mixed together but NOT chemically combined

substance that is dissolved in solution

mixture of water and nondissolved material

a compound that forms H+ in solution, pH of 0-7

Process of noticing and describing events or processes in a careful, orderly way

possible explanation for a set of observations or possible answer to a scientific question a testable question an educated guess

factor in a controlled experiment that is deliberately changed, also called manipulated variable

Chapter 1+2 Flashcards

Student preview

57 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Bias

Back

A particular preference or point of view that is personal rather than scientific

2.

FLASHCARD QUESTION

Front

Sexual Reproduction

Back

Type pf reproduction in which cells from 2 parents unite to form the first cell of a new organism

3.

FLASHCARD QUESTION

Front

DNA

Back

Genetic material that organisms inherit from their parents

4.

FLASHCARD QUESTION

Front

Stimulus

Back

Signal tp which an organism responds

5.

FLASHCARD QUESTION

Front

Evolve

Back

to change over time

6.

FLASHCARD QUESTION

Front

Biology

Back

the study of life

7.

FLASHCARD QUESTION

Front

asexual reproduction

Back

process of reproduction involving a single parent that results in offspring that are genetically identical to the parent

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