1
Q
appearance is an easy way to…
A
classify organisms
2
Q
if you classify a dog as an animal because of it’s fur, you are classifying it based on…
A
appearance
3
Q
if you classify a flower as a plant because of it’s leaves, you are classifying it based on…
A
appearance
4
Q
specific structures in organisms can help….
A
classify organisms
5
Q
a plant cell has a cell wall made out of…
A
cellulose
6
Q
a plant cell has a membrane made out of…
A
flexible fats
7
Q
define chloroplasts
A
organelles that carry out photosynthesis
8
Q
chloroplasts are often contained in (1. PLANT or 2. ANIMAL) cells
A
chloroplasts are often contained in PLANT cells
9
Q
if a cell contains chloroplasts, you can assume it is a (1. PLANT or 2. ANIMAL) cell
A
plant
10
Q
compared with other types of organisms, in general, protists can be said as being more _______ to classify
A
difficult
11
Q
define protist
A
a member of a group of eukaryotic organisms, which have a membrane-bound nucleus
12
Q
members of the protist group share some characteristics with…
A
plants, animals, or fungi
13
Q
although protist may share some characteristics with plants, animals, or fungi they are NOT…
A
classified with any of these groups
14
Q
although protists are grouped together, they are diverse and…
A
have different adaptations for movement and finding food
15
Q
most protists produce…
A
asexually
16
Q
define asexual reproduction
A
a type of reproduction in which one parent reproduces without a sperm and an egg joining
17
Q
what does the offspring produced by asexual reproduction look like?
A
it is an exact copy of the parent
18
Q
although most protists produce asexually, many protists also produce…
A
sexually
19
Q
offspring produced sexually are _____ different from their parents
A
genetically
20
Q
sexual reproduction takes ______ time than asexually reproduction
A
more
21
Q
unlike asexual reproduction, sexual reproduction creates new organisms with…
A
a variety of characteristics
22
Q
scientists usually classify organisms according to…
A
their similarities
23
Q
although scientists usually classify organisms according to their similarities, protists are…
A
a unique and diverse classification of organisms
24
Q
typically, a protist is…
A
any eukaryote that cannot be classified as a plant, an animal, or a fungus
25
scientists classify protists as...
plantlike, animal-like, or funguslike
26
protists are classified into either plantlike, animal-like, or funguslike based on...
which group they most resemble
27
define photosynthetic
relating to or involved in the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water
28
many photosynthetic algae look like...
plants
29
list characteristics of plantlike protists
- > Make their own food
| - > unicellular or multicellular
30
list characteristics of animal-like protists
- > eat other organisms for food/ consumers
| - > mostly microscopic all are and unicellular
31
list characteristics of funguslike protists
- > break down organic matter for food
| - > mostly multicellular
32
which classification(s) of protists can be multicellular?
plantlike and funguslike protists
33
which classification(s) of protists are only unicellular?
animal-like protists
34
algae are classified as which group of protists?
plantlike
35
paramecium are classified as which group of protists?
animal-like
36
the slime mold is classified as which group of protists?
funguslike
37
seaweed are...
algae
38
define algae
plantlike protists that produce food through photosynthesis using light energy and carbon dioxide
39
most plantlike protists are...
microscopic
40
define diatom
a type of plantlike protist with a hard outer wall
41
diatoms are so common that if you filled a cup with water from the surface of any lake or pond, you would probably collect _______ of them
thousands
42
what can a diatom resemble?
colored glass
43
the word diatom comes from the Greek word _____, and means "cut in two"
diatomos
44
the word diatom comes from the Greek word diatomos, and means...
"cut in two"
45
define dinoflagellate
a unicellular plantlike protist that has flagella
46
define flagella
long, tail-like parts that enable organisms
47
define euglenoid
a unicellular plantlike protist with a flagellum at one end of its body
48
INSTEAD of a cell wall, euglenoids have a rigid, rubbery cell coat called a...
pellicle
49
define pellicle
a rigid, rubbery cell coat which covers an organism's body
50
euglenoid have eyespots which are used to...
detect light and determine where to move
51
do euglenoid contain chloroplasts?
Yes
52
do euglenoid make their own food?
Yes
53
algae are classified as...
red, green, or brown
54
algae are classified as red, green, or brown depending on...
the pigments they contain
55
some types of red and brown algae can appear similar to...
plants
56
TRUE OR FALSE: red and brown algae do not have a complex organ system for transporting water and nutrients
TRUE
57
instead of roots, some types of red and brown algae have...
holdfasts
58
define holdfasts
structures that secrete a chemical-like glue that fastens algae to the rocks at sea floor
59
TRUE OR FALSE: algae is contained in ice cream, marshmallows, and pudding
TRUE
60
TRUE OR FALSE: algae is a common ingredient in everyday products
TRUE
61
TRUE OR FALSE: algae is a contained in toothpaste, lotions, fertilizers, and some pool filters
TRUE
62
algae can provide food for...
animals and animal-like protists
63
algae can provide shelter for...
many aquatic organisms
64
define kelp forests
thick groups of tall brown algae
65
sea otters and seals come to kelp forests to...
eat smaller animals
66
how are algae beneficial to an ecosystem?
by providing food and shelter for animals and animal-like protists
67
define ecosystem
a biological community of interacting organisms and their physical environment
68
algae and other photosynthetic protists can help remove...
pollution
69
pollution can be a food source for algae, this can result in the population of algae to...
increase quickly
70
algae produce wastes that can _____ other organisms
poison
71
when the number of algae increase, the water can appear red or brown. This is called a...
red tide or a harmful algal bloom (HAB)
72
what is the more proper name of "red tide?"
harmful algal bloom (HAB)
73
red tides can be ______ to aquatic organisms
harmful
74
define protozoans
protists that resemble tiny animals
75
do protozoans have chloroplasts?
NO
76
do protozoans make their own food?
NO
77
protozoans are usually...
microscopic
78
____ protozoans are unicellular
ALL
79
most protozoans live in...
wet enviroments
80
define cilia
short, hairlike structures that grow on surface of some protists
81
protists that have cilia are called...
ciliates
82
define ciliate
a protist which possesses cilia
83
cilia cover the _____ of the cell...
surface
84
how do cilia move animal-like protist through the water?
by beating together
85
a common protozoan with these cilia is the...
paramecium
86
define paramecium
a protist with cilia and two types of nuclei
87
a paramecium obtains food by...
forcing water into a groove on its side
88
what is the first step in a paramecium obtaining food?
the groove on a paramecium's side closes and a food vacuole forms within the cell
89
if the nucleus is the control room, a food vacuole can be described as a...
storage area
90
what is the second step in a paramecium obtaining food?
food particles are digested and the extra water is forced back out
91
a vacuum can describe how a paramecium obtains...
food
92
define dinoflagellates
a type of PLANT-LIKE PROTIST which uses one or more flagella to move
93
define flagellates
a type of PROTOZOAN which uses one or more flagella to move
94
what do flagellates eats?
decaying matter including plants, animals, and other protists
95
dinoflagellates are classified as...
plant-like protists
96
flagellates are classified as...
protozoans
97
paramecium are classified as...
protozoans
98
diatoms are classified as...
plant-like protists
99
euglenoids are classified as...
plant-like protists
100
protozoans are classified as...
animal-like protists
101
sarcodines have no specific...
shape
102
at rest, a sarcodine can resemble a...
random cluster of cytoplasm, or cellular material
103
sarcodines are classified as...
protozoans
104
sarcodines move over mud and rocks by...
sliding
105
sarcodines can ooze into...
almost any shape
106
define amoeba
one common sarcodine with an unusual adaptation for movement and getting nutrients
107
an amoeba moves by using a...
pseudopod
108
define pseudopod
a temporary "foot" that forms as the organism pushes part of its body outward
109
when an amoeba moves, what does it do first?
first, it stretches out a pseudopod
110
when an amoeba moves, what does it do second?
second, it pulls the rest of its body up into the pseudopod
111
besides using pseudopods to move, an amoeba uses a pseudopod to...
get nutrients
112
why are plant-like protists not considered plantae?
because they do not have a complex organ system for transporting food and water and key parts- such as roots
113
why are animal-like protists not considered animalia?
because they are unicellular
114
some protozoans can cause disease by acting as...
parasites
115
define parasite
an organism that lives in or on a host organism and benefits by deriving nutrients at the other's expense
116
_______ live inside a host organism and feed of it
parasites
117
parasites are able to ________ inside the human body
reproduce
118
when parasites reproduce inside the human body, this can cause...
serious infection
119
protozoan parasites are responsible for _____ of
| human deaths every year
millions
120
protozoan parasites that live in human intestines are usually transmitted when...
a person consumes contaminated water, or through person-to-person contact
121
protozoan parasite that live in human blood or tissue are usually transmitted through...
insect bites
122
human body openings or open wounds allow some protozoan parasites, such as certain types of amoeba, to...
enter the body
123
the nose is a...
body opening
124
what might happen without organisms that decompose other organisms?
plant material and dead animals would build up until the surface of Earth quickly became covered
125
many protozoans are beneficial to an environment because...
they break down dead plant and animal matter
126
one matter is decomposed it is then...
recycled back into the environment and used by living organisms
127
malaria is a disease caused by...
protists
128
what is the first step in how malaria develops and is spread to humans?
a mosquito bites a human infected with malaria and takes in blood containing parasitic plasmodia
129
what is the second step in how malaria develops and is spread to humans?
the mosquito transfers parasites to an uninfected human when it bites hum or her
130
what is the third step in how malaria develops and is spread to humans?
parasites enter the human's liver and begin reproducing and maturing
131
what is the fourth step in how malaria develops and is spread to humans?
mature parasites move from the liver and infect red blood cells, where they are reproduce again
132
what is the fifth step in how malaria develops and is spread to humans?
the infected red blood cells burst, releasing parasites into the bloodstream
133
a small parasitic protozoan called ______ causes malaria
plasmodium
134
how can protozoan parasites be harmful to humans?
by feeding off host organisms and transmitting diseases by reproducing in the body
135
the body of a slime mold is composed of...
cellular material and nuclei floating in a slimy mass
136
how do slime molds get their nutrients?
by absorbing nutrients from other organic matter in their environment
137
slime molds come in a variety of...
colors and forms
138
slime molds often live on...
the surfaces of plants
139
slime molds are classified as...
funguslike protists
140
water molds are classified as...
funguslike protists
141
water molds lives as a...
parasite or feeds on dead organisms
142
water molds often cause...
diseases in plants
143
both slime molds and water molds reproduce...
sexually AND asexually
144
slime molds and water molds usually reproduce sexually when...
environmental conditions are harsh or unfavorable
145
how are funguslike protists beneficial to an environment?
they break down dead plant and animal matter, making the nutrients from these dead organisms available for living organisms
146
protists can be both...
beneficial and harmful to the environment
147
many funguslike protists ____ and ____ living plants
attack and consume
148
the Great Irish Potato Famine resulted from damage by a...
funguslike protist
149
in 1845 the water mold from the Great Irish Potato Famine destroyed more than _____ of Ireland's potato crop
half
150
more than __________ people starved as a result of the Great Irish Potato Famine
one million
151
algae release ________ into the atmosphere
oxygen
152
algae release oxygen into the atmosphere through...
photosynthesis
153
most of the oxygen in Earth's atmosphere comes from photosynthesis that occurs in...
algae, plants, and some bacteria
154
algae is _____ for many organisms, including humans
food
155
besides food, algae can provide something very valuable-
oil
156
microalgae is another type of protist that is very ______ and _______ very quickly
very SMALL and REPRODUCES very quickly
157
the total mass of some microalgae can _____ several times a day
double
158
more than half of microalgae's mass is...
fats or also called lipids
159
lipids store...
energy
160
one type of lipid, called _______, can be turned into diesel oil, gasoline, and jet fuel
triglycerides
161
microalgae can grow both...
indoors under light in bioreactors and outdoors
162
in ponds, microalgae can produce 100 times more ___ than any other crop
oil
163
define photobioreactor
a tank filled with water and nutrients
164
photosynthesis requires ______ ______
carbon dioxide
165
instead of releasing carbon dioxide gas into the atmosphere, power plants can pump it into...
photobioreactors for microalgae to use
166
microalgae can grow in water that is ___ to drink
unsafe
167
using photobioreactors, microalgae can grow in areas, such as deserts, where it is not ordinarily possible to...
grow other crops
168
processing plants are a major source of...
algae oil
Science Class_6th Grade
flashcards
Decks in class (17)
# Cards
-
Describing Weather_Lesson 3.135
-
Weather Patterns_Lesson 3.22
-
Severe Weather0
-
Climates of Earth0
-
Motion_Lesson 6.110
-
Motion_Lesson 6.214
-
Cells & Life_ Lesson 10.135
-
The Cell_Lesson 10.2124
-
Moving Cellular Material_Lesson 10.347
-
Cells and Energy_Lesson 10.462
-
The Cell Cycle & Cell Division_11.139
-
Transporting Materials_Lesson 12.1160
-
Defense_Lesson 12.45
-
Bacteria_Lesson 13.115
-
Viruses_Lesson 13.230
-
Protists_Lesson 13.3168
-
Fungi_Lesson 13.426
