zoo lab 1 (dissecting, body planes, paramecium + amoeba)

6 dissecting tools

scalpel, teasing needle, blunt probe, scissors, forceps, groove director

2 parts of scalpel

blade, handle

are scalpels the most commonly used tool in zoo lab?

no

purpose of scalpel

precision cutting

purpose of scissors

cuts large, tough structures

purpose of forceps

grasp and move material

purpose of teasing needles (4)

manipulates, probes, cuts, and cleans structures

what is the most commonly used tool in zoo lab?

teasing needles

teasing needles can be used in place of a _____?

scalpel

purpose of blunt probe

manipulates and probes openings

purpose of groove director

probes openings, can direct cutting

what does the groove director look like?

mouse ears

1st step of dissection

use teasing needle

2nd step of dissection

use blunt probe to move unwanted material

3rd step of dissection

use scissors to remove unwanted material

4th step of dissection

use scalpel if needed

3 types of animal symmetry

radial, bilateral, asymmetry

2 animals with radial symmetry

jellyfish, starfish

2 animals with bilateral symmetry

human, butterfly

1 animal with asymmetry

sponge

3 body planes

frontal, sagittal, transverse

sagittal plane

cuts into left and right

transverse plane

cuts into top and bottom

frontal plane

cuts into front and back

anterior/ventral

near front of body

posterior/dorsal

near back of body

cranial

near head

caudal

near tail

medial

toward or at midline

lateral

away from midline

proximal

closer to limb origin

distal

farther from limb origin

rostral

near tip of nose

instar

phase between molting periods

6 paramecium structures

macronucleus, micronucleus, cilia, pellicle, contractile vacuole, oral groove

3 amoeba structures

pseudopodia, contractile vacuole, food vacuole

2 amoeba behaviors

cytoplasmic streaming, phagocytosis

cytoplasmic streaming

cytoplasm moving

phagocytosis

engulfing food particles

pellicle

stiff outer covering of unicellular protists that maintains shape

oral groove

depression in unicellular protists where food gets swept in by cilia

pseudopodia

extra cytoplasm used for movement and feeding

macro- and micronuclei are primarily found in…

ciliates

macronucleus

contains many copies of a few genes, responsible for metabolic processes

micronucleus

contains entire genome, responsible for genetic recombination

food vacuoles contain…

digestive enzymes

contractile vacuole function

pump extra water out of cells

nucleolus

small sphere in nucleus during interphase

holometabolous

undergoes complete metamorphosis

populations could grow ___ without limitations

exponentially

3 parts of modern cell theory

cells are the basic unit of life, cells come from other cells, all organisms are made of cells