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100 Cards in this Set
- Front
- Back
True or False:
The gametophyge generation is the dominatnt stage of the life cycle and the sporophyte generation remains attached to the gametophyte.
This describes Green Algae |
False describes Mosses |
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Two sympatric specis of pine trees release their pollen during differnt months. What is this an example of? |
temporal isolation |
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Where does photosynthesis primarily occur in most flowering plants? |
cells of palisade mesophyl |
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The blastopore is the opening to the archenteron |
true |
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to provide e which are energized by light energy |
What is the main function of water in photophosphorylation? |
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What promotes elongation of cells in shoot tips of plants? |
Indoleacetic acid |
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What transmits nerve impulses between neruons? |
Acetylcholine |
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Where does food storage in seeds occur? |
cotyledon OR endosperm |
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What is the competitive exclusion principle? |
When two species are competing for the exact same resources, one is likely to be more successful
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What is a biotic potential? |
Max growth under idea conditions |
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In birds and mammals, where does gastrulation begin at? |
primitive streak |
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What hormone promotes the development of the endometrium? |
progestrone |
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What stimulates the anterior pituitary gland to release hormones? |
GnRH |
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What is the central cavity formed by gastrulation? |
Archenteron |
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function of Sertoli cells? |
To help the spermatid as they differentiate into mature sperm where they eventually complete formation in the epididymis
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ovulation |
release of secondary oocyte from the follicle |
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initiates a specific attack against an antigen?
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Plasma cells bc they'r synthesized by B cells |
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exposes binding sites on actin? |
Tropomyosin |
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Which structure maintains systolic blood pressure? |
left ventricle |
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How is most CO2 transpoted in the blood as? |
HCO3- |
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What is the purpose of the thyroid hormones T4 and T3? |
increase cellular metabolism |
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What is cAMP produced from? |
ATP |
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What two hormones are stored in the posterior pitu22itary until they are needed? |
ADH and oxytocin |
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What are substances that stimulate the production of memory cells? |
Vaccines |
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Where do T cells originate and where do they mature? |
Bones marrow, thymus gland |
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What are memory cells within the immune system? |
B cells that dont release antibodies until there is an inversion |
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plasma cells of the immune system? |
B cells that have released specific antibodies that circulate thro body |
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What term describes the action potential jumping from node to node? |
saltatory conduction |
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What effect does Aldosterone have on the permeability of distal tubule and collecting duct? |
increases the permeability to NA+ |
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What structure of the kidney does the renal artery enter into? |
Bowman's capsule |
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How do mature RBCs maximize hemoglobin content and the ability to transport oxygen? |
lacking a nucleus |
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Which type of cells catalyze the conversion of CO2 and H2O to H2CO3 |
RBCs |
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open circulatory system |
Blood is pumped into an internal cavity called a hemocoel which bathes tissues with and oxygen/nutrient carrying fluid called hemolymph
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What in the carotid arteries monitor the pH of the blood? |
chemoreceptors |
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intercostal muscles location |
between the ribs |
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Where does most carbon fixation occur in the C4 plants? |
Bundle sheath cells |
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Auxin
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produced at the shoot tip and gets transported down the stem |
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What contributes most of the water movement through the xylem? |
Transpiration |
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Where do root hairs occur on? |
epidermal cells in the zone of maturation |
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What produces bark in woody plants? |
Cork Cambium |
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What hormone acts as a plant growth inhibitor? |
ABA or Abscisic acid |
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What effect does potassium have on stomatal opening? |
Creates a [ ] gradient favorable for H2O intake which in turn stimulates the opening of stomatal opening
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When water reaches the epidermis, what is the only way that it can continue into the vascular cylinder? |
Symplast water pathway |
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apoplast |
water travels from one cell wall to another w/o entering the other cells |
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cork cambium give rise to |
periderm |
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What makes up the tissue inside of the endodermis? |
stele |
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In plants what is the innermost ring of tightly packed cells? |
Endodermis |
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What type of plants undergo secondary growth? |
conifers and woody dicot |
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primary growth in plants |
only growth in apical meristems |
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In many monocots, what surround and protects the epicotyl? |
Coleoptile |
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plumule |
young leaves |
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function of phloem |
conduction of sugars |
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fcn of xylem |
conduction of water and mechanical support |
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What are collenchyma cells? |
Thick but flexible cell walls which serve as mechanical support
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What are parenchyma cells? |
most common component of ground tissue which aid in storage, photosynthesis, and secretion
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IN plants what are male gametes produced by? |
antheridium |
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What is the type of bacteria which convert NO2- to NO3-? |
Nitrifying bacteria |
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What are the 4 main features exhibited by all chordates? |
Notochord Dorsal hollow nerve cord Pharyngeal gill slits Muscular tail |
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What are the only deuterostomes? |
Echinoderms and Chordata
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annelids |
segmented worms |
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arthropods |
insects, spiders, crustaceans |
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acoelomate |
platyhelminthes |
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What are the only phylum's who are pseudocoelomates? |
rotifera,nematoda |
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What are the only phylum's which contain species with radial symmetry? |
Cnidaria, and Echinodermata |
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animals are typically found in the phylum platyhelminthes? |
flatworms |
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What animal is typically seen in the phylum porifera? |
sponges |
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pseudocoelomate? |
Have a gut that is not fully lined with mesoderm derived tissue |
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stamen |
anther and filament |
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What are the female gametes of bryophytes called? |
archegonium |
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function of antheridium? |
produce flagellated sperm that swin through water to fertilize eggs |
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bryophytes? |
mosses, liverworts, and hornworts |
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mycorrhizae? |
Mutualistic associations between fungi and root plants |
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asexual spores? |
Sporangiospores Conidia |
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filaments of fungi called? |
hyphae |
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archaebacteria's cell wall vs. a eubacteria's cell wall? |
Archaebacteria's cell wall lacks peptidoglycan
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Which pattern of macroevolution argues that evolution occurs by the gradual accumulation of small changes? |
Phyletic gradualism
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What is parallel evolution? |
des. 2 relates species or 2 related lineages that have made similar evolutionary changes after their divergence from a common ancestor |
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What is temporal isolation? |
Species mate or flower during diff. season or at diff. times of the day |
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What are three different ways that sympatric speciation may occur? |
Balanced polymorphism Polyploidy Hybridization |
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sexual dimorphism? |
differences in the appearance of males and females |
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disruptive selection. |
Selection that favors both extremes but not the middle |
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directional selection |
Favoring traits that are at one extreme of a range of traits |
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Homologous |
body parts that resemble one another in diff species bc of a common ancestor |
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Analogous |
body parts that resemble one another bc of adaptations to their env. |
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the end product of translation |
polypeptide |
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polymorphisms? |
slight diff in DNA sequence |
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Why do restriction fragments between indv. of the same species differ in length? |
polymorphisms |
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How are restriction fragments separated? |
gel electrophoresis |
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What process occurs when new DNA is introduced into bacteria by a virus? |
transduction |
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the process of DNA exchange between bacteria? |
conjugation |
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virus that is in a dormant state? |
provirus |
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lysogenic cycle |
dormant phase where the virus remains inactibe until a trigger occurs |
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Lytic cycle |
Destruction phase of active viral replication |
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transpoons |
DNA segments within a DNA molecule that are able to move to new locations. |
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What is heterochromatin? What is the relative activity of DNA? |
Areas where nucleosomes are more tightly compacted and where DNA is inactive |
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regions where DNA is loosely bound to nucleosomes? |
Euchromatin
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How is an aminoacyl tRNA formed? Where does the occur? |
In the cytoplasm, amino acids attach to the 3' end of the tRNAs
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Before the RNA moves into the cytoplasm ________ deletes out the _____ and splices the _____ |
snRNPs introns exons
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noncoding sequences in DNA? |
intron |
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sequences that express a code for a polypeptide? |
exons |