What is produced by white blood cells and act to stimulate other white bloodcells?Select one:a. Immunoglobulinsb. Histaminesc. Interferonsd. Interleukinse. Complements 2. Which of the following is not a freshwater community?Select one:a. Streamsb. Lakesc. Estuariesd. Riverse.
Ponds 3. The mycelium is a network of filaments called ________.Select one:a. a super-myceliumb. a conidiumc. an ascospored. a basidiosporee. a hypha 4. What part of the flower is used for catching pollen? Select one:a. the filamentb. the antherc. the stigmad. the stylee. the ovary 5. Pollen is produced in the _______.Select one:a. stigmab. antherc. sepald. filamente. style 6. Which of the following have a true coelom?Select one:a. Planarianb. Flukec. Roundwormd. Tapeworme. Mollusc 7. What two body systems control and regulate homeostasis in the human body?Select one: a. Digestive and respiratoryb. Endocrine and reproductivec. Nervous and endocrined. Lymphatic and musculare. Cardiovascular and nervous 8. All of the following statements are true about hormones except _________.Select one:a. Hormones are made by glands that have ductsb. Hormones are secreted into the bloodstreamc. Hormones may be used at a far distance from where the hormone is maded. Hormones have a slower effect than that mediated by the nervous systeme. Hormones bind to receptor sites at a target cell 9. __________ causes ocean currents to bring rich nutrients from the bottom of theoceans to the surface.Select one:a. Upwellingb. Bathypelagic up-currentsc. Mesopelagic up-currentsd. Ocean zone mixinge. Abyssal flows 10. What is the path of inhaled air molecules?Select one:a. Nasal cavity, glottis, larynx, trachea, pharynx, bronchi, bronchioles, alveoli b. Nasal cavity, pharynx, larynx, glottis, trachea, bronchi, bronchioles, alveolic. Nasal cavity, pharynx, glottis, larynx, trachea, bronchi, bronchioles, alveolid. Nasal cavity, pharynx, glottis, larynx, trachea, bronchioles, bronchi, alveolie. Nasal cavity, pharynx, glottis, trachea, larynx, bronchi, bronchioles, alveoli 11. Which of the following is a form of active immunity?Select one:a. Antibodies from breast milkb. A vaccinationc. Antibodies from the mother’s placentad. Antibiotics given by a doctore. An injection of gamma globulin 12. Collagen and elastic fibers are found in _________ tissue.Select one:a. Epithelialb. Musclec. Nerved. Connectivee. Simple squamous13. What could be a result of a drastic increase in global carbon dioxide levels?Select one:a. a bolideb. continental driftc. mass extinction d. an increase in biological diversitye. plate subduction 14. All of the following are functions of the skeletal system except _________.Select one:a. The production of red blood cellsb. The storage of calciumc. Protectiond. Movemente. Receiving sensory input from the outside world 15. Which characteristic is not measured in taxonomic classification?Select one:a. extinctionb. structurec. reproductiond. behaviore. molecular comparison 16. Which of the following taxonomic levels is the most inclusive?Select one:a. genusb. classc. speciesd. order e. phylum 17. Which of the following statements is true of both the nervous system and theendocrine system?Select one:a. They both use blood vesselsb. They both use a negative feedback mechanismc. They both produce hormonesd. They both provide long-lasting responsese. They both produce neurotransmitters 18. Why do trees not grow in the tundra?Select one:a. Land shifts from time to timeb. Land is too swampyc. Air is too thind. Shrubs are too plentifule. Permafrost is always frozen 19. What is the most efficient way in which oxygen is transported in blood?Select one:a. Being dissolved in plasmab. Chemical conversion to waterc. Combining with hemoglobind. Combining with carbon dioxide to form bicarbonate ions e. A free oxygen radical 20. Which of the following organisms have flame cells?Select one:a. Earthwormsb. Fishc. Insectsd. Sharkse. Planarians21. Which group of animals made its first appearance on land during the Devonian?Select one:a. birdsb. mammalsc. reptilesd. fishe. amphibians 22. Which of these is NOT a density-dependent factor which controls populationsize?Select one:a. Parasitesb. Competitionc. Fired. Predatione. Disease 23. Which is not a characteristic of the earthworms?Select one:a. segmentationb. complete digestive
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