esc1500L midterm

Question 1

taxis

Answer 1

response to stimulus

Question 2

kinesis

Answer 2

orientation without stimulus

Question 3

orthokinesis

Answer 3

rate of change in movement

Question 4

kilokinesis

Answer 4

change in rate of turning

Question 5

a good hypothesis should be

Answer 5

testable

Question 6

components of a lab report and their purpose

Answer 6

title
intro: purpose of experiment+hypothesis
materials
procedure
results: data
discussion: analysis
conclusion: results

Question 7

accuracy

Answer 7

how close a measured value is to an accepted value

Question 8

percision

Answer 8

how close a set of measured values is to eachother

Question 9

stereomicroscope

Answer 9

zoom 10x

Question 10

compound microscope

Answer 10

used for smaller organisms, various magnifications

Question 11

is a beaker or graduated cylinder more accurate

Answer 11

graduated cylinder

Question 12

how to use a triple beam balance

Answer 12

start at heaviest scale to lightest scale

Question 13

where to measure a graduated cylinder

Answer 13

eye level at meniscus

Question 14

density formula

Answer 14

mass/volume

Question 15

what is the sift method

Answer 15

S: stop
I: investigate source
F: find better coverage
T: trace to original content

Question 16

when doing measurements in lab what should you always put at the end of your answer

Answer 16

units

Question 17

Planning an experiment

Answer 17

1. testable hypothesis
2. test only one variable
3. no observer bias

Question 18

what is a planarian

Answer 18

non-parasitic flatworm

Question 19

what do planarians eat

Answer 19

living and dead invertebrates

Question 20

what happens when you cut a planarian in half

Answer 20

it regenerates into 2 planarians

Question 21

what are the light sensitive spots on a planarian

Answer 21

eyespots

Question 22

which way are planarians symetric

Answer 22

bilaterally

Question 23

what happens after a planarian eats

Answer 23

nutrients get circulated, undigested food leaves through mouth

Question 24

thigmotaxis

Answer 24

response to touch

Question 25

rheotaxis

Answer 25

response to a water current