1. Which should be used to make a figure of the number of males
and females of a species?
A. Bar chart
B. Frequency polygon
C. Frequency table
D. Histogram
Ans: A. Bar chart
-Since gender is a
dichotomous, non-continous variable it is a appropriate to use a bar chart
where the bars do not touch.
2. Why is it necessary that the axes start at 0 when drawing a
graph?
A. To see outliers easily
B. To avoid many data points
C. Frequency table
D. To avoid exaggerated proportion
Ans: D. To avoid exaggerated proportion
- Exaggerated proportions occur when the Y-axis starts at a value
other than 0. It makes a small difference (say of 2 units) look larger because
it is shown as a proportion of the graph, not as a proportion of the graph not
as a proportion of the entire setoff values that comprise the scale.
3. There is unity in diversity in the study of biology.
Which statement explains this?
A. All the living beings have structures unique to each
B. Living beings have structured unique to each
C. No living being can live alone
D. Living things need one another
Ans: A. All the living beings have structures unique to
each
- The meaning of unity in diversity is the existence of
oneness even after various differences, As diverse as life is, it also displays
remarkable unity there are genetic similarities within the DNA o organism as
different as bacteria and animals. Unity is also evident in many features of
cell structure.
4. Which type of graph is appropriate t be used if the data were
divided into equal intervals and the height of each bar showed the number of
data values in that interval?
A. Bar graph
B. Histogram
C. Line graph
D. Pictograph
Ans: B. Histogram
- When you a large set of data to organize, you may be able to sue
a frequency table to group the data into intervals The frequency os an interval
is the number of values in the interval. You can graph data organize into equal
intervals in a histogram. The height of each bar in a histogram indicates the
frequency of an interval.
no5. Dr. F is using a t-test to compare the means of tow sections
in his biology class. There are 25 participants in each group. How many degrees
of freedom are therein this test?
A. 23
B. 24
C. 48
D. 49
Ans: C. 48
- Degree of freedom (df) is the umber of values which are
values which are involved in the final calculation of a statistic that is
expected to vary. It is used to know the accuracy of the sample population used
in research. In the item, Dr. F has 2 groups and to use two-sample t-test as
statistical treatment. The formula from for computing degree of freedom is df=n₁+n₂-2
therefore, df 25+12=50-2 = 48.
6. A biologist study mouse behavior recorded in a table shown
below the time it took 10 different mice to locate food in maze. What statistical tool is appropriate
to use to describe the center of distribution?
A. Mean
B. Median
C. Mode
D. Not enough information given
Ans: B. Median
- Mean is not appropriate to be used since there is a presence of
an outlier or an extreme value. It may be more useful to use the median as the
main descriptive statistic for the sample of data. It is not affected by
extreme values. Mode is the value that appear most often in a sample of data.
It is not usually used as a measure of central tendency in biological research
but it can be useful in describing some distributions.
7. Students just learned in their biology class that pill use
gill-like structures to breathe oxygen. The students hypothesized that the pill
bugs gills require them to live in wet environment for their survival. To test
the hypothesis, they wanted to determine whether pill bugs show a preference
for living in a wet or dry environments. The students placed 15 pill bugs on the dry side of the two sided
choices chamber, and 15 pill bugs on the wet side of the chamber. Fifteen
minutes later, 26 pill bugs were on the wet side and 4 on the dry side. What
statistical treatment must be employed to test their hypothesis?
A. ANOVA
B. Chi-square
C. t-test
D. z-test
Ans: The statistical hypothesis in that there is no difference in
the numbers of pill bugs on the dry and wet sides of the chamber; any
difference between the two sides occurred purely by chance. The statistical
null hypothesis is that the observed counts will be equal to that expected and
the alternative hypothesis is that then observed numbers are different from the
expected. The chi-square test is used to determine how the observed results
compare to an expected or theoretical result .
8. Chlorophyll converts lights energy into ________________ .
A. Chemical energy
B. electrical energy
C. heat energy
D. kinetic energy
Ans: A. Chemical energy
- The process photosynthesis in plants involves a series of steps
and reaction that use solar energy, water and carbon dioxide to produce organic
compounds and oxygen in the energy-transduction reactions, solar energy is
converted into chemical energy in the form of two energy-transporting molecules
ATP and NADPH.
9. Which of the following statements about energy transformation
is CORRECT?
A. Energy may be created during transformation
B. The usable energy decreases as entropy increases
C. Potential energy increases in every transformation
D. the total amount of energy available reduces
Ans: B. The usable energy decreases as entropy increases
- Usable energy is inevitably used for productivity growth and
repair in the process usable energy is converted into unusable energy. Thus
usable energy is irretrievably lost in the form of unusable energy. Entropy is
a measure of unusable energy within a closed or isolated system ( the universe
for example). As usable energy decrease and unusable energy increase, entropy
increases. Entropy is also a gauge of randomness or chaos within a closed
system. As usable energy is irretrievably lost. Disorganization, randomness and
chaos increase
10. The Earth receives tremendous heat coming from the sun which
could be beneficial at one point and harmful to a large extent. Which of the
following methods of transferring heat is being illustrated?
A. Conduction
B. Convection
C. Radiation
D. Transduction
Ans: C. Radiation
- The sun’s energy moves through space, then through the Earth’s
atmosphere and finally reaches the earth’s surface. The energy of the sun is
called radiation. Radiation is the transfer of heat energy by electromagnetic
waves.
11. What type of energy happens when the heat in the sand
transfer to the person’s feet?
A. Conduction
B. Convection
C. Radiation
D. Transduction
Ans: A. Conduction
- Conduction is the transfer of
heat between substances that are in direct contact with each other. The
heat in the sand is transferred to the person feet through direct contact
12. In which process of energy does cold air displace warm air?
A. Conduction
B. Convection
C. Radiation
D. Transduction
Ans: B. Convection
- Thermal energy is transferred from the places to cold places by
convection. Convection occurs when warmer areas of a liquid or gas rise to
cooler areas in the liquid or gas. Cooler liquid or gas then takes the place of
the warmer areas which have risen higher. This results in a continuous
circulation paterrn.
13. Which method of heat transfer results from he collision of
molecules within a substance?
A. Conduction
B. Convection
C. Radiation
D. Transduction
Ans: A. Conduction
- Conduction occurs when a substance is heated particles will gan
more energy and vibrate more. These molecules then bump into nearby particles
and transfer some of their energy to them. This then continuous and passes the
energy from the hot end down to the colder end of the substance.
14. Why is it that only a small amount of energy stored in food
is available to the next organism in a food chain?
A. Because most of the energy is used for life process
B. Because primary and secondary consumer for food
C. Because there are more producers than consumers in a food chain
D. Because there are fewer top consumers in a food chain
Ans: A. Because most of the energy is used for life process
- There is only a small amount of energy available because most of
the energy is used for life processes. Approximately 90% of the energy obtain
is used for life functions such as metabolism, respiration, tissue repair
growth etc. this is related to the second law of thermodynamics. This law
states that whenever energy is transformed some of must be degraded into a less
useful form. In ecosystem, the biggest losses occur as respiration
15. Which statement best describes the flow energy as it passes
through the organism in the pyramid?
A. Energy flows through the organisms from bottom to top and it
increase at each level.
B. Energy flows through the organisms from bottom to top and
decreases at each level.
C. Energy flows through the organisms from top to bottom and
increases at each level.
D. Energy flows through the organisms from top to bottom and
decreases at each level.
Ans: B. Energy flows through the organisms from bottom to top and
decreases at each level.
- An energy pyramid’s shapes shows how the amount of useful energy
that enters each level chemical energy in the form of food – decreases as it
used by the organism is that level. This is in conformity with the first law of
thermodynamics. The first law relates to quantities of energy. It states that
energy can be transformed from one form to another but losses within a food web
can be accounted for in an energy budget. The energy that enters a community is
ultimately lost to the living world as heat
16. Geothermal energy, an energy resources in the country; based
on which phenomenon?
A. Heat energy from the sun penetrates deep into the earth
B. Human activity is the largest source of heat energy on earth
C. Earth’s internal energy heats its surface more than the sun
does
D. There are concentration of heat in some places of earth’s crust
Ans: D. There are concentration of heat in some places of earth’s
crust
- Geothermal energy is the heat from the Earth. It’s clean and
sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock
found a few miles beneath the Earth’s surface and down even deeper to the
extremely high temperatures of molten rock called magma. The areas within the
highest underground temperature are in regions with active or geologically
young volcanoes. These “hot sopt” occur at tectonic plate boundaries or at
places where the crust is thin enough to let the heat through. Seismeically
active hotspots are the common places where geothermal energy can be found.
17. The manager of textile factory considers it too expensive to
treat liquid wastes so he suggested digging a hole near the factory where the
waste can be stored. Is this environmental safe?
A. No, liquid cannot be reused
B. No, liquid wastes will seep to the groundwater
C. Yes, the liquid can be recycled
D. Yes, the liquid will pass through the layers
Ans: B. No, liquid wastes will seep to the groundwater
- Groundwater contamination occurs when man-made products such as
gasoline, oil, road salts and chemical get into the groundwater and cause it to
become unsafe and unfit for human use. Materials form the land’s surface can
move through the soil and end up in the groundwater.
18. What is the major pollutant from automobile exhaust?
A. Carbon dioxide
B. Carbon monoxide
C. Soot
D. Sulfur
Ans: B. Carbon monoxide
- The emission of carbon
monoxide from the motor vehicle has caused air pollution in human environment.
Carbon Monoxide (CO) _ a colorless, odorless, tasteless and toxic air pollutant
– is produced in the incomplete combustion of carbon-containing fuels such as
gasoline, natural gas, oil coal and wood.
19. In which civilization did the sexagesimal system originated?
A. Babylonian
B. Egyptian
C. Greek
D. Sumerian
Ans: D. Sumerian
- The sexagesial system was an ancient system of counting,
calculation and numerical notation that used power of 60 much as the decimal
system uses powers of 10. Rudiments of the ancient system survive in vestigial
form in our division of the hour into 60 minutes and the minutes into 60
seconds. It originated with the ancient Sumerians in the 3rd
millennium BC was passed down to the ancient Babylonians and still used in a
modified form for measuring time, angles and geographic coordinates.
20. Although recorded as the longest period in the history of
civilization, the dawn of the first civilization is the least that we know
about why?
A. Ancient people are too secretive
B. No one knows how to write then
C. Artifacts and fossils were burned
D. Time and circumstances left no historical evidence
Ans: D. Time and
circumstances left no historical evidence
- Time and circumstances left practically no historical evidence
of how people lived during the dawn of the first civilization. The chronology
of events is basically a matter of deduction anchored heavily on archeological
finds.
To download this reviewer, just click here. Good luck and God bless!
No comments:
Post a Comment