Bio 121 exam 1 ULL PRACTICE QUESTIONS AND ANSWER 100% VERIFIED.

order - correct answers Each living thing has a complex but well-ordered structure. energy and matter processing - correct answers Every organism takes in energy, converts it to useful forms, and expels energy. reproduction - correct answers All organisms reproduce their own kind. growth and development - correct answers Information carried by genes controls the pattern of growth in all organisms response to the environment - correct answers All organisms respond to changes in the environment. evolutionary adaptations - correct answers These traits evolve over countless generations by the reproductive success of individuals with heritable traits which are best suited to their environments. bioshpere - correct answers consists of all life on earth ecosystem - correct answers consists of the living and nonliving components community - correct answers consists of all the interacting populationa in an ecosystem population - correct answers is a group if interacting individuals if one species organism - correct answers is an individual living organism organ system - correct answers is a group of organs that work together organ - correct answers consists of multiple tissues that cooperate to perform a specific task tissue - correct answers an integrated group of similar cells that work together cell - correct answers the fundamental unit of life organelle - correct answers is a component of the cell that performs a specific function molecule - correct answers a group of atoms bonded together atom - correct answers the fundamental unit of matter living things all have in common? - correct answers how do living things differ from each other? - correct answers all activities of the cell require what to proceed? - correct answers energy and matter at each new level of biological systems - correct answers properties appear where they weren't. before structure - correct answers the shape of something function - correct answers what it does information flow - correct answers the info in all genes are encoded into DNA evolution - correct answers the descent with gradual modifications of ancestral species to modern-day ones, explains the common characteristics throughout living things. science - correct answers is an approach to understanding the natural world through inquiry. a search for information, evidence, explanations, and answers to specific questions. hypothesis - correct answers is a proposed explanation to a question that can be investigated observation - correct answers the action or process of observing something or someone carefully or in order to gain information. question - correct answers a question that needs to be open for experiments data - correct answers recorded observations, the evidence in which scientific inquires are based. process of science - correct answers communication, exploration, testing, outcomes a good hypothesis is - correct answers testable and falsifiable experiment - correct answers a hypothesis test when conditions can be easily controlled. further observation - correct answers used when investigating a hypothesis about aspects that cannot be easily controlled, like ecology. theory - correct answers is a well-substantiated explanation which is comprehensive and able to explain a great many observations. comparing hypothesis - correct answers no expectation of truth, narrow in scope, subject to immediate testing, must be falsifiable; can be refuted by contradictory evidence comparing theory - correct answers nevr been shown to be false, broad in scope, already supported by a large body of evidence, must be falsifiable; can be refuted by contradictory evidence controlled experiment - correct answers a test is run multiple times with only one variable changing. independent variable - correct answers is what is being manipulated as a potential cause. dependent variable - correct answers is the response, output, or effect under investigation. negative control - correct answers is a group for which no change is expected. Changing the oven positive control - correct answers is a group for which a change is expected. Doubling the amount of butter blind experiment - correct answers information is withheld from participants (single-blind) or from both participants and experimenter (double-blind). placebo effect - correct answers is a phenomenon in which a patient feels better after merely believing treatment was given, even if none actually was given. tables - correct answers are a way to collect, organize, and share data graphs - correct answers are a means of displaying data visually, which can help to summarize and compare information. compares categories of data line graph - correct answers used to display data that changes continuosly pie chart - correct answers used to convey numnerical proportions or percentages observation study - correct answers is often used to test ecological hypotheses. Data collected in the field. Epidemiological studies - correct answers are observational studies that measure health. clinical trials - correct answers are controlled experiments that use humans, Subjects are randomly assigned to an experimental or a control group. The control receives a placebo, a treatment that doesn't contain the substance being studied. pseudoscience - correct answers is any field of study that is falsely presented as having a scientific basis examples of pseudoscience - correct answers fortune telling, ESP, ect. sample size - correct answers how many subjects are in each group. control group - correct answers Provides more confidence in the difference for variable tested reproductability - correct answers Other groups should be able to reproduce results. primary source - correct answers Original material presented for the first time by the person(s) who performed the research. (Look for peer review). secondary source - correct answers Description or review of primary sources. wikipedia - correct answers Common first source, but allows anyone to create or edit articles. peer review - correct answers is the evaluation of work by impartial, qualified, often anonymous, outside experts. A study published in a peer-reviewed journal is generally considered the "gold standard" for recognizing valid scientific work. matter - correct answers is anything that occupies space and has mass. is found on Earth in three physical states: gas, liquid, or solid. chemistry - correct answers in order to understand many important biological processes. atoms - correct answers are the smallest units that retain all of the properties of their type of matter. molecules - correct answers Atoms are usually bonded to each other to form element - correct answers is a basic substance that can't be broken down. Sodium is an example of an element. smallest amount of an element is a - correct answers atom compounds - correct answers Individual elements combine to form reactants are on the - correct answers left of a chemical reaction products are on the - correct answers right of a chemical reaction periodic table is ordered by - correct answers atomic numbers atomic number = - correct answers number of protons and electrons atomic weight = - correct answers number of protons plus neutrons 4 elements that make up 96% of living matter - correct answers carbon, hydrogen, oxygen, nitrogen protons - correct answers have a positive charge, located in the nucleus, the number of protons determines the chemical element neutrons - correct answers have no charge, located in the nucleus, the number of neutrons determines the isotope electrons - correct answers have a negative charge, orbit nucleus at high speeds, have little mass, the number of electrons determine an atom's ion state and chemical reactiovity isotopes - correct answers are variations of an element that differ in their neutron number. are less stable and may decay over time, emitting radiation. ions - correct answers When an atom loses or gains electrons, it becomes electrically charged. Charged atoms are called ionic bonds - correct answers involve the transfer of one or more electrons from one atom to another. covalent bonds - correct answers involve the sharing of one or more electrons between atoms. The two atoms are now held together by attraction of their opposite charges. receiving an atom is - correct answers negatively charged doanting an atom is - correct answers positively charged covalent bonds are the - correct answers strongest bonds types of covalent bonds - correct answers nonpolar and polar nonpolar = - correct answers equal sharing polar = - correct answers unequal sharing water molecules are - correct answers polar hydrogen bond - correct answers is fairly weak by itself. However, one water molecule may participate in several hydrogen bonds. The resulting networks of hydrogen bonds are strong enough to form liquid water. water molecule - correct answers polar covalent bonds hold atoms together. Water is a polar molecule. as water freezes - correct answers its molecules move farther apart solvent - correct answers The dissolving agent of a solution. Water is the most versatile solvent known. solution - correct answers A homogeneous mixture of two or more substances water can readily - correct answers absorb and release heat evaporating - correct answers is one way that living things can use water to regulate temperature. Sweating is an example of an organism regulating temperature. cohesion - correct answers the tendency of molecules to stick together. aqueous solution - correct answers is one that contains a substance dissolved in water, some water molecules brea