Archives: Quiz

1) which biome is characterized by rainfall under 25 cm/year, hot days, cold nights, and quickly blooming plants? a. grasslands b. temperate deciduous forest c. temperate deserts d. taiga e. tundra 2) what type of selection is occurring in a […]

1) which hormone from the adrenal cortex of the kidneys will cause the distal convoluted tubules to reabsorb more sodium ions? a. renin b. angiotensinogen c. angiotensin ii d. adh e. aldosterone 2) immediate allergic responses are caused by ______ […]

1) marine annelids (polychaetes) are different than earthworms in that polychaetes a. lack the setae that earthworms have. b. have paddle-like parapodia that earthworms do not have. c. have segments, whereas marine annelids do not. d. lack a larval form, […]

1) which of the following groups ofplants contain microphylls? a. lycophytes b. pteridophytes c. bryophytes d. gymnosperms e. angiosperms 2) which of the following organisms is not ultimately dependent on the sun as a source of energy? a. a night-blooming […]

1) selective reabsorption of glucose and amino acids occur in the ____ of the nephron. a. glomerulus b. distal convoluted tubule c. proximal convoluted tubule d. collecting duct e. loop of the nephron (loop of henle) 2) nonspecific defenses against […]

1) the northern copperhead is agkistrodon contortrix contortrix, the southern copperhead is agkistrodon contortrix mokasen, and the cottonmouth is agkistrodon piscivorous. therefore, a. all are subspecies of agkistrodon. b. they are three distinct species. c. the copperheads are subspecies and […]

1) generally the respiratory system in birds a. is identical to the human breathing system. b. is merely accelerated by the flight muscles. c. resembles the positive pressure system of a frog. d. is a one-way circulation of air so […]

1) to determine the age of fairly recent fossils and organic artifacts, it is possible to analyze the amounts of the isotopes 14c and 14n, because over time the 14c-which originated in the atmosphere-breaks down into 14n. what net change […]

1) which of these plant tissue types is composed of sieve-tube elements and companion cells, and transports organic nutrients made in the leaves? a. xylem b. phloem c. collenchyma d. sclerenchyma e. parenchyma 2) which of the following processes does […]

1) which of the following features is common among the roundworms as well as the arthropods? a. periodically shed their outer covering. b. radial symmetry. c. endoskeleton. d. undergo metamorphosis. e. segmentation is readily apparent. 2) fossils are considered to […]

1) an organism does not necessarily have to ensure that its own genes are passed to the next generation. the adaptation to the environment due to the reproductive success of an organism’s relatives is a. altruism. b. kin selection. c. […]

1) which european species is believed to have evolved from homo ergaster? a. homo heidelbergensis b. homo erectus c. homo floresiensis d. homo sapiens e. australopithecus africanus 2) which of the following statements concerning ribosomes are true? a. several ribosomes […]

1) which does not occur in telophase? a. cytokinesis is under way. b. the nuclear envelope is being reconstructed. c. the centromeres split apart. d. chromosomes de-condense into chromatin. e. the nucleolus reforms. incorrect 2) which of the following reflect(s) […]

1) identify what happens when the doctor hits your knee cap with the rubber hammer during your annual physical. a. the stimulus travels down the axon of your sensory neuron, through the dorsal root ganglion, is transmitted through the dendrites […]

1) flukes are divided into monogenea and digenea. monogenea have a posterior holdfast with hooks, clamps, and suckers; digenea have suckers but never hooks and clamps. monogenea have only one host in the life cycle, and usually live on gills […]

1) although there is no connection between the female urinary and reproductive tracts, there is a connection in males because a. urine is produced in the nephrons and sperm is produced in the ureters. both then pass through the urethra […]

1) an adolescent female who is hyperactive, nervous, irritable and has eyes that are protruding from their sockets is most likely suffering from ________ which is caused by ___________. a. grave’s disease, oversecretion of t3 or t4 due to antibodies […]

1) which of the following statements concerning the indirect values of biodiversity is not correct? a. trees take up carbon dioxide and release oxygen when they photosynthesize. b. forests act as a sponge to soak up water and release it […]

1) the correct order in which a light ray reaches the retina is: a. cornea-vitreous humor-pupil-lens-aqueous humor-retina. b. lens-vitreous humor-cornea-aqueous humor-retina. c. lens-cornea-aqueous humor-vitreous humor-retina. d. cornea-aqueous humor-pupil-lens-vitreous humor-retina. e. lens-aqueous humor-cornea-vitreous humor-retina. 2) why do polar bodies form? a. […]

1) identify the feature found in cooksonia that qualify it as a vascular plant. a. presence of roots b. contained leaves c. had branches that ended in sporangia d. produced windblown spores 2) which association of structure and function is […]

1) which of the following features would have helped early plant ancestors evolve to a terrestrial existence? a. cellulose in the cell walls b. apical cells c. plasmodesmata d. placenta e. all of these features would have helped 2) what […]

1) when conditions are unfavorable, some gram positive bacteria form a. pili. b. endospores. c. galls. d. capsules. e. thylakoids. 2) if the ureter was blocked due to the development of a tumor preventing the normal flow of urine,which region […]

1) what is the main reason for the changes that are occurring in the earth’s climate? a. large scale deforestation b. disruption of the waste recycling by decomposers c. over harvesting of wild species for consumptive value d. drainage of […]

1) in the near future, the human population is predicted to involve a. a worldwide decrease in population growth due to limited resources. b. an increase in population growth in all countries in the world. c. a decrease in growth […]

1) the differences between organic and inorganic molecules do not follow simple absolute rules. however, most organic molecules are associated with living organisms. which of the following statements does not correspond to the general distinctions between these types of molecules? […]

1) which of the following is not associated with animal cells? a. an extracellular matrix b. plasmodesmata c. gap junctions d. adhesion junctions (desmosomes) e. tight junctions incorrect 2) which statement is not correct about the trp operon? a. the […]

1) which type of soil is best able to retain calcium and potassium, preventing them from being leached away by runoff? a. clay b. humus c. sand d. all soils are equal in preventing leaching of minerals. e. none of […]

1) if the mean annual precipitation of a region, currently characterized by grasslands, was to increase by 50 cm per year, what type of biome(s) would evolve in that region? a. temperate forests b. savanna c. deserts and tropical rainforests […]

1) which term refers to the attraction to water molecules? a. hydrophilic b. hydrophobic c. hydrolysis d. photolysis e. nitrophylic 2) darwin’s opinion that living forms must be descended from extinct forms was based on ________ evidence. a. anatomical b. […]

1) which of the following statements about dna replication is not correct? a. unwinding of the dna molecule occurs as hydrogen bonds break. b. replication occurs as each base is paired with another exactly like it. c. the process is […]

1) which organisms use negative pressure to move air into the lungs? a. ducks b. iguanas c. humans d. mice e. all of these use negative pressure to move air into their lungs. 2) the electron transport chain and chemiosmosis […]

1) the structures in the outermost ring of floral structures that cover and protect the bud are a. carpels. b. sepals. c. receptacles. d. petals. e. stamens. 2) which of the following is not one of the stages of hiv […]

1) which is not true about the electrical charges in chemistry? a. protons carry a positive charge. b. in an atom, the number of protons and neutrons must be equal. c. an atom is neutral when the positive and negative […]

1) the particular place where an organism lives is its a. life zone. b. niche. c. ecosystem. d. community. e. habitat. 2) the part of the brain that controls the anterior pituitary gland secretions is the a. medulla. b. thalamus. […]

1) the early explorers used sailing ships, which were blown by the major winds; therefore, columbus and other sailors generally traveled from europe to north america by the mid-latitude westerlies, and returned to europe by the southern easterlies near the […]

1) the term “protists” is used to refer to eukaryotes that are not plants, animals or fungi. 2) rejection of transplanted tissue is treated with immunosuppressive drugs that prevent the activity of b cells. Answer: false 3) the distribution of […]

1) only one of the four daughter cells becomes a functional gamete in spermatogenesis. 2) sustainable development is a pattern of resource use that attempts to preserve the environment while meeting the needs of humans in the present and future. […]

1) analysis of the nutrient content of phloem is performed on phloem sap that is made available when an aphid is cut away from its stylet. 2) the cylinders in this experiment represent a 24-hour period. the light area represents […]

1) essential plant nutrients include carbon, potassium, calcium, and nitrogen. 2) the cephalochordates possess an atrium that is used to filter microscopic food particles out of the water. Answer: true 3) the cylinders in this experiment represent a 24-hour period. […]

1) a change in the chromosome number resulting from nondisjunction is called euploidy. 2) some memories are emotionally charged because the amygdala triggers associations between fear and sensory information. Answer: true 3) the iron in a hemoglobin molecule is actually […]

1) the cylinders in this experiment represent a 24-hour period. the light area represents light periods during a 24-hr. period and the dark area represents dark periods during a 24-hr. period. the critical length of dark vs. light periods for […]

1) all food chains begin with a photosynthetic producer. 2) in order for a community to reach the status of climax community, succession must always begin with pioneer species. Answer: false 3) the human embryo becomes a fetus at the […]

1) the waggle dance of a bee indicates to other bees in the hive the direction of food. 2) the process by which a white blood cell or an amoeba engulfs bacteria is called phagocytosis. Answer: true 3) are only […]

1) all cells have a cell wall that regulates the passage of molecules into and out of the cell. 2) dr. james isolated staphylococcus aureus, a type of bacteria, from the leg wound of a ten year old boy. he […]

1) the genetics inherited by an individual will completely control their behavior. 2) male birds often perform a special dance or set of physical displays to attract females. this would be an example of a behavioral isolation mechanism. Answer: true […]

1) once exposed to an antibiotic drug, bacteria will develop a resistance in order to survive and then pass the resistance onto subsequent generations. this is an example of lamark’s idea of the inheritance of acquired characteristics. 2) the deceleration […]

1) if macroevolution was goal oriented then organisms would be perfect in form and not have any flaws. 2) only lycophytes have true roots, stems, and leaves. Answer: false 3) lenticels are small openings on the underside of eudicot leaves […]

1) a population of organisms that reproduce asexually without gametes from other individuals will display more variation than a population that reproduces sexually. 2) analogous structures serve the same function, are similarly constructed and are inherited from a common ancestor. […]

1) all hominoids walk upright. 2) communication is an action by a sender that may influence the behavior of a receiver. Answer: true 3) chloroplast are capable of running photosynthesis which is the most abundant form of anabolic metabolism in […]

1) gene mutation occurs at any time, without respect to the mutation’s adaptive value or benefit to the organism. 2) plants that conduct c-4 metabolism are desert plants. Answer: true 3) scientists estimate that at least 50-60% of all species […]