Flashcards in Unit 1-Chapters 1 and 2 Deck (93):
all living things and all the places thay are found
the variety of life across the biosphere
particular type of living things that can reproduce by interbreeding among themselves
scientific study of all forms of life
any individual living thing
4 characteristics of an organism
1. made up of one of more cells
2. use energy for life processes
3. repsond to the environment
4. have successful offspring
basic unit of life
all of the chemical processes that build up or break down materials
genetic material in a molecule (deoxyribonucleic acd)
an organized group of related parts
4 unifying themes of biology
1. systems of related parts
2. a structure that relates to its function
3. maintain homeostasis
4. evolution explains the unity and diversity of life
physical environment with different species that interact with oe another and with nonliving things
the maintainence of constant internal conditions
change in living things over time
an inherited trait that gives an advantage to individual organisms and is passed on to future destinations
evolution accounts for...
unity and diversity in life
includes using our sense to study the world, but it may also involve other tools
observations that can be analyzed (numbers)
proposed answer for a scientific question (if...then...because)
scientists study factore called independent and dependent variables to find cause-and-effect relationships
a condition that is manipulated by the scientist
observed and measured during an experiment
show effect of independent variable
a condition that is kept the same throughout the experiment
proposed explantation for a wide range of observations and experimental results that is supported by a wide range of evidence
provide an enlarged image of an object
a segment of DNA that stores genetic information
study and manipulation of DNA on a molecular level
study and comparison of genomes both within and across species
use and applacation of living things and biological processes
organisms that have genes from more than one species
smallest basic unit of matter
one particular type of an atom; can be broken down
a substance made of atoms of different elements bonded together in a certain ratio
bond formed through the electrical force between oppositely charged ions
an atom that has gained or lost one electron
a bond formed when atoms share a pair of electrons
two or more atoms held together by covalent bonds
an attraction between a slightly positive hydrogen atom and a slightly negative atom
the attraction among molecules of a substance
attraction among molecules of different substances
Hydrigen bonds are responsible for ... in water
1.high specific heat
a mixture of substances that is the same throughout
the substance that is present in the greater amount
disolves another substance
a substance that dissolves in a solvent
compound that releases a proton (hydrogen ion H+) when it dissolves in water
compound that removes a proton (hydrogen ion H+) when it dissolves in water
a solutions acidity/H+ concentration
a subunit in the complete molecule
a large molecule made of monomers bonded together
molecules composed of carbon; hydrogen, and oxygen
source of energy
uniques bonding properties
4 bonding sites
straight, branched, and ring
fats, oils, and cholesterol
source of energy and make up structure
chains of carbon atoms bonded to hydrogen atoms
polymer of amino acids
molecules that contain carbon, hydrogen, oxygen, nitrogen
20 different ones
bonded with peptide bonds
change substances into different substances by breaking and forming chemical bonds
substances changed during a chemical reaction
substances made by a chemical reaction
amount of energy that will break a bond between two atoms
when reactants and products are made at the same rate
amount of energy needed to be absorbed for a chemical reaction to start
when a chemical reaction releases more energy than it absorbs
when a chemical reaction abosorbs more energy than it releases
a substance that decreases the activation energy needed to start a chemical reaction
increases rate of reaction
a catalyst for chemical reactions in living things
the specific reactants that an enzyme reacts on
Earth is home to...
...an incredible diversity of life
all organism share...
all levels of life have...
...systems of related parts
structure and ______ are related in biology
organisms must maintian...
...homeostasis to survive in diverse environments
...the unity and diversity of life
biology is a process of...
...experiments to test hypothesis
a theory explains...
...a wide range of observations
imaging technologies provide...
...new views of life
complex systems are...
...modeled on computers
the tools of molecular genetics give rise to...
...new biological studies
your health and the health of the environment depend on...
...your knowledge of biology
...great promise but also raises many issues
...many unanswered questions
living things consist of...
...atoms of different elements
ions from when...
...atoms gain or lose electrons
...pairs of electrons in covalent bonds
life depends on...
...hydrogen bonds in water
many compunds dissolve in...
some compounds form...
...acids or bases
carbon atoms have...
...unique bonding properties
four main types of carbon-based molecules are found in...
bonds break and form during...
chemical reasctions release or absorb...
a catalyst lowers...