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Biology Unit 1 Review Flashcards | StudBud
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Biology Unit 1 Review
Biology Unit 1 Review
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#highschoolbiology #labsafety #experimentaldesign #graphing #atomicstructure
Flashcards
24 cards
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Questions
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Answers
1
How should scientists find the best data for which type of feed = most muscle mass in cattle
5 similar groups of cows, same feed mixture, varying amounts
different types of cows, different mixtures, varying amounts
test 5 different types of cows with the same mixture
5 similar groups of cows with 5 different feed mixtures
2
What is the mean mass of mcd in grams?
300
57
60
50
3
An ecologist measured changes in the mass of decomposing plant material. What SI unit is used?
Pound
Kilogram
Liter
Day
4
The
difference
between the % of surviving tadpoles is greatest for which 2
consecutive
pH value
5.5 and 6.0
7.0 and 8.0
6.0 and 6.5
6.5 and 7.0
5
Celery leaves turn blue after the stalk sits in blue water. Which property of water is this?
lower density as a solid than as a liquid
high specific heat
adhesion and cohesion
evaporation and cooling
6
What is the average number of eggs laid per day over the 5 days?
50
5
25
10
7
Which tool is best for a student to use to observe mitosis (division of cells) in an onion root
flask
microscope
gel electrophoresis chamber
triple beam balance
8
What is the best definition of a scientific theory?
A description of an invariable relationship in nature
An unproven fact
An explanation of how and why a natural phenomenon behaves
A speculation or guess about how nature works.
9
Which type of graph would you use to compare the mean of Bald Eagle eggs in two states?
Pie Graph
Bar Graph
Scatterplot
Line Graph
10
What is the most accurate conclusion regarding the relationship between height and weight?
There is a positive relationship between height and weight.
There is no relationship between height and weight.
There is a negative relationship between height and weight
Tall individuals are always heavier than short individuals
11
Carbon (C-14) is an isotope. It has an atomic number of 6. How many neutrons does C-14 have?
8
7
16
20
12
What is the difference between an electrically neutral atom and an ion is that..
atom: unequal # of neutrons and protons; ion: equal #
ion: equal # of protons & electrons; atom: unequal #.
ion: unequal # of protons & electrons; atom: equal #
atom: electrons in orbital; ion: electrons in its nucleus
13
What property of water explains why salt (Chlorine and Sodium) dissolves easily in water?
water is a polar molecule
water has a high specific heat
water exhibits strong cohesion
water as a solid is less dense than as a liquid
14
Between 0 sec and 2 sec, which of these 4 reactions has the greatest average rage of production
Reaction II
Reaction III
Reaction I
Reaction IV
15
What is the primary factor that determines the polarity of a bond between atoms
The total number of protons and neutrons in both atoms
The difference in relative attraction of protons to atoms
The total number of electrons involved in the bond
The difference in relative attraction of electrons to atoms
16
How does a Ca
2+
ion differs from a Ca atom?
fewer electrons
fewer protons
more protons
more electrons
17
Which of the following statements regarding atoms and ions is NOT correct.
Ions and atoms of the same element: same number of protons.
Ions & atoms (same element): same # of electrons and protons
Cations: positively charged atoms who have lost an electron
Ions have a positive charge and atoms have no charge
18
Chan wants to measure the change in mass of fungus on a agar plate. What is the unit to use?
kilogram
Kilometer
milligram
millimeter
19
Which of the following best describes the relationship between basic and applied science
Applied science solves problems tha B.Science misinterpreted
Applied science builds off of basic science to solve a prob.
Basic science has been replaced by applied science
BS is driven by technology, AS is driven by curiosity.
20
An organism's heartbeat is affected by varying temperatures. What is the independent variable?
the number of organisms in the culture
Number of heartbeats per second
Temperature of the samples
Microscope used to view samples
21
Which practice is NOT an example of correct lab practice when using pond water?
Wearing disposable gloves
Discarding samples down the drain
Disinfecting the lab countertop before & after each session
Washing hands before and after each lab session
22
A scientist found that her results did not support her hypothesis. What should she do next?
Discard those results and repeat the experiment.
Create a new hypothesis and a new experiment to test it.
Accept the hypothesis and exclude data that does not fit.
Reject the hypothesis and assume it is incorrect.
23
When do covalent bonds form
two hydrogen atoms share electrons with one oxygen atom
molecules of water becomes an ion
two molecules of water share electrons
two hydronium ions are attracted to each other
24
This reaction needs a catalyst to proceed. With no catalyst, the activation energy would be...
smaller than what is shown
larger than what is shown
very similar to what is shown
he same as what is shown
