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SBI4U – Gr. 12 Biology Univ. Prep.
Unit 5: Population Dynamics Name: _____________________________________
Characteristics of Populations
Read textbook section & answer the following questions.
Definitions
Define the following terms.
1.
Habitat:
2.
Species:
3.
Population size:
4.
Population density:
Population Size & Density
5.
What is the equation used to calculate population density? Label the terms.
6.
If there are 400 moose living in a 600ha region of Algonquin Park, what is the population density?
7.
What is the difference between crude density and ecological density
?
SBI4U – Gr. 12 Biology Univ. Prep.
8.
What density is represented in question #6 – crude density or ecological density? Why?
9.
Redo question #6, this time accounting for a 70ha lake in the habitat. What type of density accounts for this?
10.
What is population dispersion?
11.
What are the 3 patterns of population dispersion? Draw a picture & give an example of an animal for each.
Measuring Population Characteristics
Populations are “dynamic” – they keep changing! Thus, it is hard to count numbers of animals in a population. Researchers count numbers at a specific time & estimate/predict population numbers based on these numbers.
12.
Describe quadrat sampling. What type of species is this type of sampling good for?
SBI4U – Gr. 12 Biology Univ. Prep.
13.
You want to estimate the number of ragweed plants growing in a large field, 100m x 100m. You place a quadrat (3.0m x 2.0m x 2.0m) down on the field in 3 different spots and count the number of plants in each quadrat. Your results are 18, 11 and 24 plants.
a.
What is the population density of ragweed in the field?
b.
What is the population size of ragweed in the field?
14.
Describe
the
“mark
-
‐
recapture”
method.
What
types
of
species
is
this
method
good
for?
15.
What are the criteria for the marking techniques used?
16.
What assumptions are made when using this method?
17.
What is the equation used in this method? Label the terms.
18.
Wildlife researchers capture 80 wood ducks & mark them. 2 weeks later, they capture 100 ducks & find that 12 were marked. What is the population size of wood ducks in that area?
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a WilI be taken.
- -4.37pm on Friday September 25th.
Students are required to take the exam ALONE and use Proctorio. Students may use their OWN written notes t
complete the exam.
Question 32
1 pts
Calcium's role in muscle contraction is
O To bind to troponin to uncover the actin binding site on myosin
O To inhibit the binding of ATP to myosin
O To allow for muscular contraction to stop by releasing myosin and actin after the power stroke has occurred
O To bind to tropomyosin and open Na+ channels, causing depolarization
Next
Privacy - Terms
11:23
Ca 4») ENG
08-11-2020
a
O Type here to search
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The census website is:
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For the graph:
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Download for free at http://www.stkate-las.com/uploads/7/0/2/5/70257827/cytology1_lab.pdf
32
LAB 2 EXERCISE 2-2
The Cell Interior
Please identify and label the following cell structures listed below. Watch the Cytology Lab Video as
requested before 2.1 to help you complete this activity. Place the appropriate letter(s) on the line
between the numbers and the name. "NA" = not applicable, do not use.
Plasma membrane
Nucleus
Nuclear envelope
4. E Rough endoplasmic reticulum
Smooth endoplasmic reticulum
Golgi complex
Golgi vesicles
8. AO Mitochondria
Lysosome
Centriole
6.
1.
2.
7.
3.
9.
5.
10.
C
*There may be multiple pictures of the same structure
A
B
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inate
S_Q1_Science_Biology_2022-2023
Question 1
200
TIDO
D
D
BO
70
60
550
40
30
20
10
OF
0
5
X
me graph shows the growth of the P caudatum population when it is grown separately.
P. caudatum Alone
250
200
150
5
V
10
Time (days)
Q Zoom
10
Time (days)
15
15
The graph shows the growth of the P. aurelia and P. caudatum populations when they are grown
together.
Both Species Grown Together
20
2022 Illuminate Education TM, Inc.
Question 1
Which statement is supported by the graphs?
A
A
B
C
D
Accessibility Tools
Signed in as: Zavion Ma
Q Review/✔ Finish T
ABG
P. caudatumrand P. aurelia competed equally for resources.
P. aurelia and P. caudatum did not compete for resources.
P. aurelia was better able to compete for resources than P. caudatum
P. caudatum was better able to compete for resources than P. aurelia
Z
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A country’s total population divided by country’s total land area of a country = _______
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Activity 2: Classifying varlables
Directions: Identify the following variable as either qualitative or quantitative. Then classity
which specific category they belong.
Type of variable
(Qualitative/Quantitative) (Discrete,
Classification
continuous,
interval, ratio, nominal,
dichotomous, ordinal)
Discrete, interval
Data
Quantitative
Ex. Number of eggs laid by chickens
1. Amount of fertilizer given to plants
2. Weight of Pechay harvested (in
grams)
3. Speed of car
4.
Tomato plant variety
5. Color of alcohol packaging (blue,
orange, white, pink)
6. Educational level of parents (high
school grad, college grad, MS,
PhD)
7. Online seller satisfaction rating (1-
5 stars)
8. Cellphone brand
9. Number of Covid-19 positive cases
10. Type of music
11. Number of passengers in a PUJ
12. Socio-economic status
13. Gender
14. Temperature in Fahrenheit
15. Civil Status
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Can you answer this question please
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Story Time
B. Directions: Read and understand the story below. After reading, answer
the questions below. Write your answers on a separate sheet of paper.
Once upon a time, there lived a population of mountain people whose
members all had bird wings. One day, a group of people with bat wings
traveled to the land of the bird wings people, who warmly welcomed them to
their land. At this point, 5% of the population had bat wings and 95% of the
population had bird wings. The two wing types interbred with each other, and
over many generations, the population shifted so that 40% of the people had
bat wings and 60% had bird wings.
9 | Page
12/ 20
Questions:
1. What type of evolutionary mechanism did this story show?
2. Was there an adaptation in this story? If so, identify it.
3. Did the change make the population more or less similar to other
populations? Explain your answer.
•..
...
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please answer all parts with good explanation and clear answer
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T value
(T1-12)
$2
122
Scientists collected data on two groups of organisms. The mean, x, equals 15 for the
first group and 7 for the second group. In each group, the sample variance, s2, equals
3. The sample size, n, for the first group is 10 and for the second group is is 11.
Calculate the t-value for these two groups of organisms. Then, explain the next two
steps that are needed to determine if this t value is statistically significant.
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Edit Format Table
12pt v Paragraph
BIUA 2 Tv||#
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Identify if this is a rate, a ratio, or a proportion.
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number of women in Palawan who died in 2004
O Proportion
O Ratio
O Rate
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Thank you! <3
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B
D
Privacy - Terms
22:53
O Type here to search
a
4) ENG
07-11-2020
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Paper Assignment
A study was conducted on patients with liver disease and some of their observations were included in the attached excel sheet. Use the dataset provided to answer the following questions:
Q. 1.
Write a statistical summary for participants' demographic and health details that include important variables such as Albumin Level, Age, Gender, Systolic BP, and Smoking Status.
Point- 5
Q. 2.
Compute most appropriate measure of central tendency and dispersion to report the variable Albumin level.
Point-
2
Q. 3. (a) What is the appropriate statistical test to identify the significant difference between Gender groups and patients' Albumin level?
(b) Write down the assumptions of the proposed statistical test.
(c) Formulate null hypothesis & alternative hypothesis for such an association.
Point-3
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e Introduction to Biology: Tutorial x
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Introduction to Biology: Tutorial
Question
Warm-Up
Aa
Select the correct answer.
Scientific investigations begin by asking questions that can be tested, measured, or both. Which question meets this
criterion?
O What opinions do teenagers have about vaccines?
O Do hand sanitizers decrease a person's risk of a bacterial infection?
O Is buying organic food an ethical choice?
O How hard is it for people to reduce stress in their lives?
Submit
O Type here to search
# メ
a
69°F Sunny
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Grade 11 Biology Paper 2 Mock x -
le.com/forms/d/e/1FAlpQLSePZHYEdenSPvjha3tn_5UTTkdrG6NDH15qmfZAPVWGExvL
1. Figure 1 shows the variation in height of a sample of men in a population.
4500
4000
3500
3000
2500
2000
1500
1000
500
157 159 161 163 165 167 169 171 173 175 177 179 181 183 185 187 189 191 193
Height (cm)
Figure 1. Height of a sample of men in a population
a. Suggest TWO causes of variation among members of the same species.
Your answer
The Nisdeethe menet
Number of men
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Minute Timed PX
B
4
5
6
rutgers.instructure.com/courses/207533/external_tools/retrieve?display=full_width&url=https%3A%2F%2Frutgers.quiz-Iti-iad-prod.instructure.com%2Flti...
7
8
9
10
11
12
13.
3
Quizzes 2
X
Previous
+
01:18:44 <
Time Remaining
Return
1 point
The PCCE of the respiratory tract helps capture inhaled debris and pathogens which are then absorbed into the bloodstream and filtered out by the liver for elimination
through the digestive system.
True
False
U
Nex
d
Next
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Identify if this is a rate, a ratio, or a proportion.
mumber of women in Brgy.Haritan who died from heart disease in 2004
number of women in Brgy.Baritan who died from cancer in 2004
O Proportion
Rate
O Ratio
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ROCEDURE
1. Prior to watching the video, read the questions below.
2. Watch the video.
3. If working with a partner or in a small group, discuss and answer the questions below. If working alone,
think about and answer the questions below.
QUESTIONS
1. What are the two main threats to African elephant populations?
Scientists estimate that African elephants are being lost at a rate of
/day.
2. What are two principal research questions that will be addressed by the Great Elephant Census?
1How eleplertb remsin
kere Hey live.
3. Logistics are the details that must be handled to plan and organize a complicated activity or event that
involves many people. Give three examples of logistics that the organizers of the census need to
address.
The
The
Cthod they will wse count each elephont
the researchers Lte airompt)
the
) How they
curuey e
4.
How will the results from the project be used?
5.
Dr. Mike Chase's team has chosen to use a sample count method to estimate the total elephant
population…
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population network trr
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Each ionizable group of an amino acid can exist in one of two states, charged or neutral. The electric charge on the functional
group is determined by the relationship between its pK and the pH of the solution. This relationship is described by the
Henderson-Hasselbalch equation.
Histidine has three ionizable functional groups. Complete the equilibrium equations by assigning the proper pK₁ for each
ionization and the net charge on the histidine molecule in each ionization state.
1-1-OH
H₂N-C-C-OH
1
CH₂
+
HN
-NH
O
H ||
H₂N-C-C-0-
|
CH ₂
HN
-NH
O
O
H ||
H₂N-C-C-0-
1
CH₂
-NH
□
H
H₂N-C-C-0-
Lio
CH ₂
O
-NH
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