BIOLOGY MIDTERM

C
SCIENTISTS WILL NEVER KNOW WHY FOR SURE DINOSAURS BECAME EXTINCT. THEREFORE, SCIENTISTS SHOULD: A) stop studying dinosaurs and only study living animals. B) work to raise live dinosaurs to study. C) continue to learn as much as they can about dinosaur extinction. D) accept the current theory about dinosaur extinction as the best possible theory
B
SCIENCE IS BEST DESCRIBED AS: A) a set of facts. B) a way of knowing. C) a collection of beliefs. D) a list of rules
B
BASED ON YOUR OBSERVATIONS, YOU SUGGEST THAT THE PRESENCE OF WATER COULD ACCELERATE THE GROWTH OF BREAD MOLD. THIS IS: A) a conclusion. B) a hypothesis. C) an experiment. D) an analysis
C
SUPPOSE THAT A SCIENTIST PROPOSES A HYPOTHESIS ABOUT HOW A NEWLY DISCOVERED VIRUS AFFECTS HUMANS. OTHER VIRUS RESEARCHES WOULD LIKELY: A) reject the hypothesis right away. B) change the hypothesis to fit their own findings. C) design new experiments to test the proposed hypothesis. D) assume that the hypothesis is true for all viruses
C
AFTER A SCIENTIST PUBLISHES A PAPER, SOMEONE ELSE FINDS EVIDENCE THAT THE PAPER’S HYPOTHESIS MAY NOT BE CORRECT. THE SCIENTIST IS UNHAPPY, BUT STUDIES THE NEW EVIDENCE ANYWAYS. THE SCIENTIST IS SHOWING WHICH SCIENTIFIC ATTITUDE? A) creativity B) curiosity C) open-mindness D) skepticism
C
WHAT DOES A REVIEWER DO DURING PEER-REVIEW? A) focus on mistakes in spelling. B) change data to support results. C) check for mistakes and bias. D) repeat the experiments in the article
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B
HOW DO SCIENTIFIC THEORIES COMPARE TO HYPOTHESES? A) theories are the same as hypotheses. B) theories unify a broad range of observations and hypotheses. C) hypotheses combine the ideas of several theories to explain events. D) hypotheses are the dominant view among scientists
A
A PERSONAL PREFERENCE OR POINT OF VIEW IS: A) a bias. B) a theory. C) a hypothesis. D) an inference
B
HOW DOES STUDYING SCIENCE HELP YOU BE A BETTER MEMBER OF SOCIETY? A) learning the biases of science will help you know what is right or wrong. B) understanding how science worlds will help you make better decisions. C) memorizing science facts will help you become more intelligent. D) knowing science will help you live without the aid of technology
B
WHICH OF THE FOLLOWING IS NOT A CHARACTERISTIC OF LIVING THINGS? A) growth and development. B) ability to move. C) response to the environment. C) ability to reproduce
A
WHICH OF THE FOLLOWING CHARACTERISTICS OF LIVING THINGS BEST EXPLAINS WHY SOME NORTH AMERICAN BIRDS FLY SOUTH FOR THE WINTER? A) living things respond to their environment. B) living things maintain an internal balance. C) living things are made up of units called cells. D) living things are based on a universal genetic code
A
THE PROCESS BY WHICH ORGANISMS KEEP EVERYTHING INSIDE THEIR BODIES WITHIN CERTAIN LIMITS IS CALLED: A) homeostasis. B) evolution. C) metabolism. D) photosynthesis
C
WHAT ARE THE SMALLEST OBJECTS THAT BIOLOGISTS STUDY? A) cells. B) body organs. C) molecules. D) organisms
C
BIOLOGISTS WHO WORK IN THE FIELD OF GENOMICS AND MOLECULAR BIOLOGY STUDY: A) the biosphere. B) diseases. C) dna. D) trees
B
A PALEONTOLOGIST WOULD LIKELY BE MOST INTERESTED IN FINDING: A) weapons for an evolutionary arms race with disease-causing organisms. B) a universal Tree of Life. C) weather patterns that affect life on earth. D) genetic codes to rewrite
B
WHY IS THE METRIC SYSTEM EASIER TO USE THAN THE ENGLISH SYSTEM? A) metric units are easier to measure than english units. B) the metric system is bases on multiples of 10. C) the metric system is used by everyone in the world. D) metric units are smaller than english units
C
ISOTOPES ARE ATOMS OF THE SAME ELEMENT WITH THE SAME NUMBER OF PROTONS AND A DIFFERENT NUMBER OF: A) electrons. B) molecules. C) neutrons. D) ions
D
WHICH OF THE FOLLOWING MAKE UP A MOLECULE OF WATER? A) one atom of hydrogen and one atom of oxygen. B) one atom of sodium and one atom of chlorine. C) one atom of hydrogen and two atoms of oxygen. D) two atoms of hydrogen and one atom of oxygen
D
WHICH IS OF THE FOLLOWING IS NOT TRUE ABOUT CHLORINE? A) it is a poisonous, greenish gas B) it combines with sodium to form table salt. C) it was used in battles in WWI. D) it is not reactive
A
WHICH OF THE FOLLOWING STATEMENTS ABOUT A COMPOUND IS TRUE? A) the physical and chemical properties are usually very different from those of the elements from which it is formed. B) only the physical properties of a compound are usually the same as those of the element from which is is formed. C) only the chemical properties of a compound are usually the same as those of the element from which it is formed. D) the physical and chemical properties of a compound are usually the same as those of the elements from which it is formed
A
WHAT TYPE OF ELECTRON IS AVAILABLE TO FORM BONDS? A) valence. B) nucleus. C) ionic. D) covalent
B
IF YOU STIR SALT INTO BOILING WATER, YOU PRODUCE A: A) suspension B) solution C) solution and a suspension D) a mixture only
D
IF THE pH OF STOMACH ACID AND OVEN CLEANER WERE MEASURED,: A) both would be below 7. B) both would be above 7. C) the pH of stomach acid would be above 7, but the pH of oven cleaner would be below 7. D) the pH of stomach acid would be below 7, but the pH of oven cleaner would be above 7
C
SOLUTIONS THAT HAVE MORE OH- THAN H+ IONS ARE: A) reactants. B) acids. C) bases. D) enzymes
A
WHY IS CARBON SO SPECIAL COMPARED TO OTHER ELEMENTS? A) carbon atoms can bond to one another and form a lot of different structures. B) carbon atoms have four valence electrons and can form quadruple bonds. C) only carbon atoms can form covalent bonds with oxygen and hydrogen. D) only carbon atoms can be dissolved in water solutions and suspensions
B
CARBON-12 IS THE MOST COMMON ISOTOPE OF CARBON. IT HAS 6 PROTONS, 6 NEUTRONS, AND 6 ELECTRONS. OF ITS 6 ELECTRONS, 4 ARE VALENCE ELECTRONS. HOW MANY COVALENT BONDS CAN A CARBON ATOM FORM? A) 1. B) 4. C) 6. D) 12
D
AMINO ACID IS TO PROTEIN AS: A) fat is to lipid. B) DNA is to RNA. C) sugar is to fat. D) simple sugar is to starch
B
IDENTIFY THE REACTANTS IN THE CHEMICAL REACTION, CO2 + H2O -> H2CO3: A) co2, h2o, and h2co3. B) co2 and h2o. C) h2co3. D) co2
B
IF A REACTION IN ONE DIRECTION RELEASES ENGERY, THE REACTION IN THE OPPOSITE DIRECTION: A) also releases energy. B) absorbs energy. C) destroys energy. D) cannot occur
D
WHICH OF THE FOLLOWING IS TRUE ABOUT CATALYSTS: A) catalysts slow down the rate of chemical reactions. B) all catalysts are enzymes. C) catalysts are used up during a chemical reaction. D) catalysts lower the activation energy of a chemical reaction
D
WHICH OF THE FOLLOWING DESCRIPTIONS ABOUT THE ORGANIZATION OF AN ECOSYSTEM IS CORRECT? A) communities make up species, which make up populations. B) populations make up species, which make up communities. C) species make up communities, which make up populations. D) species make up populations, which make up communities
B
WHICH OF THE FOLLOWING IS NOT A BASIC METHOD USED BY ECOLOGISTS TO STUDY THE LIVING WORLD? A) experimenting. B) animal training. C) modeling. D) observing
C
ALGAE AT THE BEGINNING OF A FOOD CHAIN IS: A) a primary consumer. B) a decomposer. C) a primary producer. D) a heterotroph
C
COMPARED TO THE LAND, THE OPEN OCEANS: A) are nutrient rich environments. B) contain unlimited nitrogen. C) are nutrient poor environments. D) are rich in silica and iron
B
IN WHICH WAY ARE PLANTS IN A SUNNY MOUNTAIN MEADOW AND SULFUR BACTERIA IN A DEEP-SEA VOLCANIC VENT ALIKE? A) they both use photosynthesis to make their own food. B) they both produce carbohydrates and oxygen. C) they both use chemosynthesis to produce their own food. D) they both produce carbon and hydrogen
C
WHAT ARE THE THREE KINDS OF ECOLOGICAL PYRAMIDS? A) producer, consumer, and decomposer. B) energy, nutrient, and trophic. C) energy, biomass, and numbers. D) biotic, abiotic, and nutrient
C
A WORD THAT MEANS THE SAME THING AS CONSUMER IS: A) producer. B) autotroph. C) heterotroph. D) carbohydrate
B
CARBON CYCLES THROUGH THE BIOSPHERE IS ALL OF THE FOLLOWING PROCESSES EXCEPT: A) photosynthesis. B) transpiration. C) burning of fossil fuels. D) decomposition of plants and animals
A
WHICH PART OF THE WATER CYCLE IS A BIOLOGICAL PROCESS? A) transpiration. B) runoff. C) precipitation. D) condensation
D
WHY CAN’T THE PRODUCERS IN SOME ECOSYSTEMS MAKE AN UNLIMITED SUPPLY OF ORGANIC MATERIAL? A) temperatures are too hot for photosynthesis. B) too many carnivores eat the producers. C) energy needed to make organic material is lost as heat. D) one or more nutrients are in short supply
A
ANIMALS THAT GET ENERGY BY EATING THE CARCASSES OF OTHER ANIMALS THAT HAVE BEEN KILLED BY PREDATORS OR HAVE DIED OF NATURAL CAUSES ARE CALLED: A) scavengers. B) omnivores. C) heterotrophs. D) detritivores