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Duplicate of 1st 9 weeks Biology Benchmark review- VA SOL Flashcards | StudBud
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Duplicate of 1st 9 weeks Biology Benchmark review- VA SOL
Duplicate of 1st 9 weeks Biology Benchmark review- VA SOL
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Flashcards
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Questions
27
Answers
1
John sees that a plant in his window still appears to be dying. Which is NOT a valid hypothesis
The plant is receiving too much sunlight
The plant is receiving too little water
The plant is receiving too much sunlight
The plant is 10 inches tall
2
Life has started to form in this ecosystem. What is the predominant life form found below?
Mushrooms
Ferns
Tracheophytes
Pioneer speices
3
The optimum enviroment for trypsin is?
4
8.2
13
6
4
What is the bond happening between water molecules, represented by the dotted lines?
Hydrogen bond
Covalent bonds
Ionic bonds
5
Carbohydrates contain what elements
Carbon, Hydrogen, and Nitrogen
None, they are just made of starches
Carbon, Hydrogen, and Sulfur
Carbon, Hydrogen, and Oxygen
6
In a food web the arrow points to-
who is doing the eating
who is being eaten
there are no arrows in a food web
7
What is an example of lipids?
Carbohydrates
oils
chocolate
Amino acids
8
Two populations in the same ecosystem feed on oak trees. What could sometimes be an issue?
Wildfire could kill off new species of birds
Random mating could occur so a special bread could take over
Could be less oxygen avaible for the smaller animals
Competeing for food during certain seasons
9
Humans get metabolism through being a/an
autotroph
decomposer
hetertroph
homotroph
10
Students put 25 sewer lice in salt water and recorded their observations. What is the flaw?
There was no indepedent variable
The sample size was too big
there was no control
The procedure was too complicated
11
VA students are trying to find species of plants. What resource would be
most
helpful?
VA native plant checklists and plant identification keys
VA newspapers and sciecne journals
fossil records and historical society publication
Biology textbook and wikipedia
12
What is responsible for returning nitrogen to the air in this Nitrogen cycle diagram?
Excretion
Nitrifitcation
Decomposition
Photosynthesis
13
From 1840 to 1920, the carrying capacity for sheep in Tasmania was about-
0.75 million
1.00 million
2.25 million
1.75 million
14
What is an example of nucleotides
ZNA
DNA
Amino Acids
3 fatty acids+glycerl
15
How could humans have a positive effect on the enviroment?
Use pesticides to regular insect populations
Replant the same vegetables in fields year after year
Over-hunt so not as many animals can eat
Bring in bugs from Argentina
16
What are some abiotic factors in an ecyosytem?
Compeition
Organisms interactions
Soil
Gases
17
An acid falls in the pH range of...
9-11
7-8
13-14
2-4
18
If I was measuring the height of plants by millimeters.Which tool would be
most
accurate?
Graduated cylinder
yardstick
digital scale
metric ruler
19
How would the flow of energy go through an enviroment?
Sun →Decomposer→Hetertroph→Autotroph
Sun→Autotroph→Hetertroph→Decomposer
Autotroph→Sun→Hetertroph→Decomposer
Sun→Hetertroph→Autotroph→Decomposer
20
What side of this photosynthesis equation is the reactant?
The arrow
None are
Right
Left
21
Which of the following is the product of the photosynthesis equation?
6H2O
C6H12O6
Light
6CO2
22
This diagram represents
A pyramid of biomass
A food chain
A pyramid of energy
a pyramid of numbers
23
Students are determining the effect of pollultants on the growth of 3 groups of seeds.Not valid
control
hypothesis
conclusion
variable
24
What are some biotic factors in an ecosystem?
pH
Competiton
Food the organism eats
Water
25
Water molecule is polar this means that-
atoms have unequal charges
water molecules are in a straight line thus looks like pole
The molecules work best in cold temperatures
opposite ends of the molecule have opposite charges
26
What is the best definition for a theory?
A statement that can be supported or rejected.
A fact meant to describe an action. Accepted to be true
Accepted explanation of a lot of info.Framework for concepts
27
What element makes up the greatest amount in a cell?
Iodine
Iron
Carbon
Calcium
