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Biology Module #3 SG
Question | Answer |
---|---|
a.Pseuopod | A temporary, foot-like extension of a cell |
b.Necleus | The region of a eukaryiotic cell that contains the cell's main DNA |
c.Vacuole | a membrane bounded "sac" within a cell |
d.Ectoplasm | The thin, watery cytoplasm near the plasma membrane of some cells |
e.endoplasm | the dense cytoplasm found in the interior of many cells |
f.flagellate | a protozoan that [ropels itself with a flagellum |
g.pellicle | a firm, flexible coating outside the plasma membrane |
h.chloroplast | an organelle containing chlorophyll for photosynthesis |
i.cholophyll | a pigment necessary for photosynthesis |
j.eyespot | a light-sensitive region in certain protozoa |
k.symbiosis | a close relationship between two or more species where at least one benefits |
l.mutualism | a relationship bewtween two or more organisms of different species where all benefit from the association |
m.sommoensalism | a relationship between two organisms of different species where one benfits and the other is neither harmed nor benefited |
n.parasitism | a relationship between two organisms of different species where one beneftits and the other is harmed |
o.cilia | hairlike projections that exxten from the plasma membrane and are used for locomotion |
p.spore | a reproductive cell with a hard, protective coating |
q.plankton | tiny organisms that float in the water |
r.zooplankton | tiny floating organisms that are either small animals or protozoa |
s.phytoplankton | tiny floating photosynthetic organisms, primarily algae |
t.thallus | the body of a plant-like organism that is not divided into leaves, roots, or stems |
u.cellulose | a substance(made of sugars) that is common in the cell walls of many organisms |
v.holdfast | a special structure used by an organism to anchor itself |
w.sessile colony | a colony that uses holdfasts to anchor itself to an object |
3.Which of the following genera contain organisms with chloroplasts? :Amoeba, Euglena, Paramecium, Spirogyra | Euglena and Spirogyra |
4.What is the function of a contractile vacuole? What is the difference between this and a food vacuole? | Contractile: excess water in a cell nd releases it into the surroundings, to reduce pressure.Food: stores food |
5.What is the difference between endoplasm and ectoplasm? | Ectoplasm is thick, and the ectoplasm is watery and very thin |
6.The amoeba and euglena each have different means of locomotion. How are they different? How are the similar? | Amoeba: uses pseudopods by deforming its body. Euglena: uses flagellum but when wanting to move quickly it can deform its body. |
7.Name 3 pathogenic organisms from kingdom Protista. | Toxoplasma, Plasmodium, and Trypanosoma |
8.For the phyla below, list the means of locomotion employed by the organisms in that phyla: | Sarcodina: pseudopods. Mastigophora: Flagella, Ciliphora: cilia |
9.What main the main features that seperate organisms into phylum Sporozoa? | Form spores naturally and have no real locomotion. |
10.A tapework is a parasite that feeds on the butrients which the host eats, depriving the host of nutrition.Trichonympha is a mistigophorite that lives in the gut of a termite, helping break down chemicals that the termite cannot break down on its own... | ................see next space for continuation of the question |
10.continued.Name the specific kind of symbiosis in each of these situations. | Trichonympha is mutualism. The tapeworm is parasitism |
11. Why do the ciliates have 2 nuclei? What is the purpose of each? | Because they require so much energy. Macronucleus: only handles metabolismMicroneclues: controls reproduction.` |
12. What is the difference between the conjugation that occurs between paramecia nd conjugation that ocurs between different bacteria? | theres a mutual exchange in DNA with the paramecium, and the paramecium gets new DNA. only one bacterium gets new DNA in the bacteria conjugtion |
13.2 microorganism groups are studied. in the 1st group, the organisms form hard shells around themselves when exposed to dangerous conditions. if not exposed to these conditions they do not form hard shells.the 2nd group form hard shells around...... | ...........see next space for continuation of the question |
13. continued themselves as a natural part of their life cycle. Which group would be classified as coming from phylu Sporozoa? | The 2nd group. |
14.What is unique about the way a euglena obtains food? | It can live off of dead remains or produce its own food by photosynthesis |
15.Which phylum (see list in #2) contains the organisms responsible for most of the photosynthesis that occurs on earth? What generic term is used to refer to these organisms? | Chrysophyta, which contain the diatoms |
16.Food vacuole: | function: stores food - phylum mastigophora |
16.Contrctile vacuole: | function: reduces pressure my removing water - phylum Sacodina |
16.Falgellum: | function: Locomotion - phylum pyrrophyta |
16.Pellicle: | function: keeps cell shape - phylum ciliphora |
16.Chloroplast: | function: stores chlorophyll - phylum chlorophyta |
16.eyespot: | function: detects lights - phylum mastigophora` |
16.cilia: | function: locomotion - phylum ciliophora |
16.nucleus: | function: contains DNA - phylum: all phylum in Protista |
16.oral groove: | function: conjugation and food intake - phylum ciliophora |
17.What are large deposits of diatom remains called? list 2 deposits. | diatomaceous, abrasives and filters |
18.What is a red tide? | a bloom of dinoflagellates in algae |
19.What 2 phyla principally contain macroscopic algae? | Phaeophyta and Rhodophyta |
20.What substance produced by member of phylum Phaeophyta is useful for thickening ice cream, pudding, salad dressing, and jelly beans? | aglinic acid |