Bio 106, Stark, Spring, 2003, Test1

1. Trichinella are
(a) larvae (maggots) of holometabolous flies.
(b) parasites in the kingdom Protista.
*(c) nematodes.
(d) chordates.
(e) deuterostomes.

2. What is different between the rat and the human in that rats cannot vomit?
(a) pharynx
*(b) cardiac orifice
(c) pyloric sphincter
(d) gastric mucosa
(e) carboxypeptidase

3. Most of the mass of organic matter in a plant comes from
*(a) CO2.
(b) magnesium.
(c) chelated iron.
(d) guano.
(e) nitrate.

4. Famous for its function at low pH.
*(a) pepsin
(b) ethylene
(c) bile
(d) amylase
(e) kinase

5. Enteropeptidase
(a) causes the liver to release bile.
(b) emulsifies lipids.
*(c) converts trypsinogen to trypsin.
(d) converts ethanol to an aldehyde.
(e) functions in the stomach for protein digestion.

6. "There is a net movement of water through a semipermeable membrane from an area of higher concentration to an area of lower concentration."
*(a) By "higher concentration," we mean fewer dissolved organic molecules.
(b) This forces water to the top of a tall tree.
(c) This is why it is more scientifically accurate to use the expression "create a partial vacuum" than to use the word "suck."
(d) This describes capillary action.
(e) This descirbes the function of epithelia.

7. Humus is a term applied to
(a) deposits of foraminiferans from the Carboniferous.
(b) the calcium carbonate reefs built by certain cnideria.
*(c) the organic material component of soil.
(d) the underground part of a mushroom.
(e) extracellular proteins in connective tissue.

8. What is the closest approximation to fertilization found in the fungus?
*(a) karyogamy
(b) formation of the sporophyte
(c) mitosis
(d) formation of the megaspore
(e) fragmentation of hyphae

9. Which disorder is caused by an apicomplexan, transmitted to people by the mosquito, and involves infection of red blood cells by merozoites?
(a) ring worm
(b) cirrhosis
(c) ulcer
*(d) malaria
(e) red tide

10. "Meiosis makes haploid gametes, while mitosis makes diploid daughter cells." This statement is, of course, wrong. Which is an example of why it is wrong?
(a) Plants do not have sperm.
(b) In plants, meiosis makes diploid cells.
(c) There is no meiosis in the sexual reproduction of protistans.
(d) Sometimes haploid cells have meiosis.
*(e) Sometimes haploid cells have mitosis.

11. In the late fall, when darkness lasts longer than daylight,
(a) interrupting the long night with far red light would block flowering in a short day plant.
(b) interrupting the long night with far red light would block flowering in a long day plant.
(c) interrupting the long night with far red light would promote flowering in a long day plant.
(d) interrupting the long night with red light would promote flowering in a short day plant.
*(e) interrupting the long night with red light would block flowering in a short day plant.

12. Penicillin is derived from
(a) red algae.
(b) diatoms.
(c) oomycotes, fungus-like protistans.
*(d) a fungus.
(e) the medicinal leech.

13. A sperm nucleus fertilizing two polar nuclei to make a triploid cell
(a) is called syngamy in Paramecia.
(b) causes aneuploidies in plants analogous to trisomy-21 in people.
(c) is why Neurospora has been so useful in genetics.
(d) creates the moss gametophyte.
*(e) yields the endosperm in flowering plants.

14. Magnesium is important
*(a) as a component of chlorophyll.
(b) as a plant hormone.
(c) as an ion that is high inside cells and low outside cells.
(d) as a component of mitochondrial cytochromes.
(e) as an acid-neutralizing secretion of the pancreas.

15. Which pigment is a hormone interconverted by red and far-red lights?
(a) the receptor for phototropism
*(b) phytochrome
(c) ethylene
(d) the bile pigments
(e) cytochrome

16. Which statement about primate - human evolution is true?
(a) People are more closely related to New World monkeys than to Old World monkeys.
*(b) There is strong evidence that Homo sapiens from Africa replaced other species.
(c) Lucy was the first member of the species Homo sapiens.
(d) Neanderthals were ancient, belonging to the genus Australopithicus.
(e) Homo sapiens were the first to make tools in the stone age.

17. "Simple squamous" is a term applied to
(a) plant cells with a function of support.
(b) the cell walls of fungi.
*(c) animal epithelial tissues.
(d) the theory that a prokaryotic symbiote evolved into a eukaryotic plastid.
(e) a life cycle stage unique to protista.

18. Deadly agent orange
(a) causes fish kills when there are blooms of dinoflagellates.
(b) is spread by the bite of the tsetse fly.
(c) is a mushroom extract that causes hallucinations.
*(d) was a defoliant related to auxin.
(e) causes ripening of fruits.

19. Water's properties of adhesion and cohesion are important for transport in xylem and
(a) osmosis.
(b) the operation of a water pump.
(c) the closing of stomata.
*(d) capillary action.
(e) signalling by a hormone across the membrane.

20. Self-incompatibility
(a) only occurs in gymnosperms.
*(b) ensures cross-pollination in complete flowers.
(c) is necessary to prevent self-pollination in the princess holly.
(d) occurs when both pollen alleles are different from the one stigma allele.
(e) distinguishes alternation of generations in bryophytes from that of ferns and seed plants.

21. Which cell secretes HCl in the human stomach?
(a) mycorrhizae
(b) parenchyma
*(c) parietal
(d) fibroblast
(e) choanocyte

22. The basement membrane
(a) has plasmodesmata.
(b) closely resembles the cell walls of fungi.
(c) forces extracellular water into cells in plant roots.
(d) is the structure specialized for water excretion in fresh water protistans.
*(e) is an extracellular layer juxtaposed to epithelia.

23. Which are productive autotrophs?
*(a) diatoms
(b) Giardia
(c) trypanosomes
(d) yeasts
(e) cephalopods

24. Mushrooms might be found in a circle because
(a) of the highly organized products of meiosis in the ascus.
(b) sperm can only fertilize eggs in the damp soil.
(c) of the mutualistic association of algae and fungi.
(d) the spores from the previous mushrooms land in a circle.
*(e) the mycelium expands outward as it exhausts organic matter.

25. On the underside of a green fern leaf, you see sori where
(a) O2 and H2O goes out and CO2 goes in.
*(b) spores are formed.
(c) syngamy takes place.
(d) fertilization takes place.
(e) karyogamy takes place.

26. Which is an example of a pheromone-mediated aggregation of free-living amoeboid cells into a colony for the sake of producing spores?
(a) eumetazoa
(b) osteichthyes
(c) prosimians
(d) lichens
*(e) slime mold

27. Corn
(a) is dioecious.
(b) has the secondary growth characteristic of dicots.
(c) has a well-balanced amino acid content.
*(d) has separate carpellate and staminate flowers.
(e) has root nodules.

28. A portion of [A] that penetrates a parasitized cell is called a [B].
(a) [A] meristem; [B] cambium
(b) [A] ascus; [B] mycelium
*(c) [A] hypha; [B] haustorium
(d) [A] fern; [B] epiphyte
(e) [A] iris; [B] rhizome

29. What is the hepatic portal vessel?
(a) It is what defines the chordate.
(b) It is the gastro-vascular cavity of the flat worm.
(c) after gastrulation, it is the cavity that will become the gut.
(d) It connects the gall bladder to the duodenum.
*(e) It carries blood from the intestines to the liver.

30. For which is radial symmetry such an important characteristic that "Radiata" is a term applied to their classification?
(a) the embryo sac (female gametophyte) of a flower
(b) ascomycota
*(c) cniderans
(d) Australopithecus
(e) marsupials

31. What is unusual about the palm?
*(a) There are no tree rings.
(b) It was once prevalent in Virginia but was wiped out by a blight.
(c) It was considered to be a plant long ago but is now classified as a protistan.
(d) It is a heterotroph.
(e) It is a gymnosperm.

32. Bryophytes differ from flowering plants in that they
(a) are dioecious.
(b) have naked seeds.
(c) are considered to be members of the kingdom Protista.
*(d) lack vascular tissue.
(e) are phytoplankton.

33. Chitin, a nitrogen-containing polysaccharide, is present in arthropod exoskeleton and
(a) loose connective tissue.
*(b) cell walls of fungi.
(c) the cytoplasm to bind calcium ions.
(d) xylem.
(e) meristems.

34. The largest variety of digestive enzymes function in the
(a) large intestine.
(b) mouth.
(c) stomach.
*(d) small intestine.
(e) liver.

35. The male portion of a complete flower that releases the pollen is the
(a) filament.
*(b) anther.
(c) ovary.
(d) stigma.
(e) style.

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