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100 Cards in this Set

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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

Two sympatric specis of pine trees release their pollen during differnt months. What is this an example of?

temporal isolation

Where does photosynthesis primarily occur in most flowering plants?

cells of palisade mesophyl

The blastopore is the opening to the archenteron

true

to provide e which are energized by light energy

What is the main function of water in photophosphorylation?

What promotes elongation of cells in shoot tips of plants?

Indoleacetic acid

What transmits nerve impulses between neruons?

Acetylcholine

Where does food storage in seeds occur?

cotyledon OR endosperm

What is the competitive exclusion principle?

When two species are competing for the exact same resources, one is likely to be more successful


What is a biotic potential?

Max growth under idea conditions

In birds and mammals, where does gastrulation begin at?

primitive streak

What hormone promotes the development of the endometrium?

progestrone

What stimulates the anterior pituitary gland to release hormones?

GnRH

What is the central cavity formed by gastrulation?

Archenteron

function of Sertoli cells?

To help the spermatid as they differentiate into mature sperm where they eventually complete formation in the epididymis


ovulation

release of secondary oocyte from the follicle

initiates a specific attack against an antigen?


Plasma cells bc they'r synthesized by B cells

exposes binding sites on actin?

Tropomyosin

Which structure maintains systolic blood pressure?

left ventricle

How is most CO2 transpoted in the blood as?

HCO3-

What is the purpose of the thyroid hormones T4 and T3?

increase cellular metabolism

What is cAMP produced from?

ATP

What two hormones are stored in the posterior pitu22itary until they are needed?

ADH and oxytocin

What are substances that stimulate the production of memory cells?

Vaccines

Where do T cells originate and where do they mature?

Bones marrow, thymus gland

What are memory cells within the immune system?

B cells that dont release antibodies until there is an inversion

plasma cells of the immune system?

B cells that have released specific antibodies that circulate thro body

What term describes the action potential jumping from node to node?

saltatory conduction

What effect does Aldosterone have on the permeability of distal tubule and collecting duct?

increases the permeability to NA+

What structure of the kidney does the renal artery enter into?

Bowman's capsule

How do mature RBCs maximize hemoglobin content and the ability to transport oxygen?

lacking a nucleus

Which type of cells catalyze the conversion of CO2 and H2O to H2CO3

RBCs

open circulatory system

Blood is pumped into an internal cavity called a hemocoel which bathes tissues with and oxygen/nutrient carrying fluid called hemolymph


What in the carotid arteries monitor the pH of the blood?

chemoreceptors

intercostal muscles location

between the ribs

Where does most carbon fixation occur in the C4 plants?

Bundle sheath cells

Auxin


produced at the shoot tip and gets transported down the stem

What contributes most of the water movement through the xylem?

Transpiration

Where do root hairs occur on?

epidermal cells in the zone of maturation

What produces bark in woody plants?

Cork Cambium

What hormone acts as a plant growth inhibitor?

ABA or Abscisic acid

What effect does potassium have on stomatal opening?

Creates a [ ] gradient favorable for H2O intake which in turn stimulates the opening of stomatal opening


When water reaches the epidermis, what is the only way that it can continue into the vascular cylinder?

Symplast water pathway

apoplast

water travels from one cell wall to another w/o entering the other cells

cork cambium give rise to

periderm

What makes up the tissue inside of the endodermis?

stele

In plants what is the innermost ring of tightly packed cells?

Endodermis

What type of plants undergo secondary growth?

conifers and woody dicot

primary growth in plants

only growth in apical meristems

In many monocots, what surround and protects the epicotyl?

Coleoptile

plumule

young leaves

function of phloem

conduction of sugars

fcn of xylem

conduction of water and mechanical support

What are collenchyma cells?

Thick but flexible cell walls which serve as mechanical support


What are parenchyma cells?

most common component of ground tissue which aid in storage, photosynthesis, and secretion


IN plants what are male gametes produced by?

antheridium

What is the type of bacteria which convert NO2- to NO3-?

Nitrifying bacteria

What are the 4 main features exhibited by all chordates?

Notochord


Dorsal hollow nerve cord


Pharyngeal gill slits


Muscular tail

What are the only deuterostomes?

Echinoderms and Chordata


annelids

segmented worms

arthropods

insects, spiders, crustaceans

acoelomate

platyhelminthes

What are the only phylum's who are pseudocoelomates?

rotifera,nematoda

What are the only phylum's which contain species with radial symmetry?

Cnidaria, and Echinodermata

animals are typically found in the phylum platyhelminthes?

flatworms

What animal is typically seen in the phylum porifera?

sponges

pseudocoelomate?

Have a gut that is not fully lined with mesoderm derived tissue

stamen

anther and filament

What are the female gametes of bryophytes called?

archegonium

function of antheridium?

produce flagellated sperm that swin through water to fertilize eggs

bryophytes?

mosses, liverworts, and hornworts

mycorrhizae?

Mutualistic associations between fungi and root plants

asexual spores?

Sporangiospores


Conidia

filaments of fungi called?

hyphae

archaebacteria's cell wall vs. a eubacteria's cell wall?

Archaebacteria's cell wall lacks peptidoglycan


Which pattern of macroevolution argues that evolution occurs by the gradual accumulation of small changes?

Phyletic gradualism


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

What is temporal isolation?

Species mate or flower during diff. season or at diff. times of the day

What are three different ways that sympatric speciation may occur?

Balanced polymorphism


Polyploidy


Hybridization

sexual dimorphism?

differences in the appearance of males and females

disruptive selection.

Selection that favors both extremes but not the middle

directional selection

Favoring traits that are at one extreme of a range of traits

Homologous

body parts that resemble one another in diff species bc of a common ancestor

Analogous

body parts that resemble one another bc of adaptations to their env.

the end product of translation

polypeptide

polymorphisms?

slight diff in DNA sequence

Why do restriction fragments between indv. of the same species differ in length?

polymorphisms

How are restriction fragments separated?

gel electrophoresis

What process occurs when new DNA is introduced into bacteria by a virus?

transduction

the process of DNA exchange between bacteria?

conjugation

virus that is in a dormant state?

provirus

lysogenic cycle

dormant phase where the virus remains inactibe until a trigger occurs

Lytic cycle

Destruction phase of active viral replication

transpoons

DNA segments within a DNA molecule that are able to move to new locations.

What is heterochromatin? What is the relative activity of DNA?

Areas where nucleosomes are more tightly compacted and where DNA is inactive

regions where DNA is loosely bound to nucleosomes?

Euchromatin


How is an aminoacyl tRNA formed? Where does the occur?

In the cytoplasm, amino acids attach to the 3' end of the tRNAs


Before the RNA moves into the cytoplasm ________ deletes out the _____ and splices the _____

snRNPs


introns


exons


noncoding sequences in DNA?

intron

sequences that express a code for a polypeptide?

exons