What are some policies and procedures that need to be followed when planning and having field trips? 

SC235: General Biology I: Human Perspectives

 

 

 

Oh…My Crazy Stress Hormones!

Annie is a new district attorney (DA) for her county and she has her first day in court. She walks into the courtroom and sits at the plaintiff’s table. She feels pretty relaxed and is excited about her first case as a DA; but she is also nervous. The judge enters the courtroom, introduces the case and asks Annie to make her opening statement. As Annie begins to stand, she suddenly feels terror, her hands are trembling, her heart is racing, her mouth is dry and she thinks that she may faint.

  1. What is Annie experiencing?
  2. What are the three stages of General Adaptation Syndrome (GAS)?
  3. What stage is she currently experiencing? What hormone is released during this phase and how does it affect the body?
  4. What are the main organs involved in this response?
  5. What techniques do you recommend to help Annie calm down?
  6. Think about your own experiences. Describe an incident where your system activated the “fight or flight response.’
    1. What caused this reaction?
    2. How did you feel?
    3. What was the outcome?
    4. Be sure to explain in your example how many of the GAS stages you experienced.
  7. What is post-traumatic stress disorder (PTSD)? What stage of GAS is affected in PTSD?
  8. What treatments are available for PTSD?

Discussion Requirements:

Review the file Discussion Board Tips for Success in the Doc Sharing Tab.

 Respond and her is the tips i am going to send you the pages of the book to your email

The textbook contains some very helpful information about General Adaptation Syndrome (GAS).  Please be sure to read pages 229-231 of the textbook.  In your post, please be sure to describe all three stages of GAS.  What happens during each stage?

 

 

i need reference

 

This the second discussion

 

Learning Through First-Hand Experiences

 

Children learn best by doing, and social studies can help them to get actively engaged in their learning experiences. After learning about the benefits of fieldwork, you should have a solid understanding of how to make professional and ethical choices when planning field trips.

Imagine you are planning a social studies activity for your early childhood students. Select the age group for the lesson: 0–4 months, 5–12 months, 2–4 years old, or 5–8 years old. As part of this activity, you will plan a field trip within the community or at your school or center that is best suited for the children. Once you have your activity planned, post your responses to the following:

• Select the age group for the lesson: 0–4 months, 5–12 months, 2–4 years old, or 5–8 years old.

• Describe the objectives and goals of the activity including what children would do for the activity.

• Explain how the fieldwork you have planned will be beneficial for students and for this lesson.

• Share why you think first hand experiences are essential.

• What would you do if a parent challenges your decision? What can you do to respect their beliefs?

• What are some policies and procedures that need to be followed when planning and having field trips?

• Use the Social Studies lesson plan template, complete the information using the activity you have mentioned above. Make sure to complete each component of the lesson plan.

What would happen to the food web if your animal’s population became extinct?

Lab #1: Ecological Interactions

Adapted from: www.torontozoo.com

INSTRUCTIONS

Complete the lab and answer the questions below. After you’re finished, save this completed lab file and upload it to the Lab #1 folder in the Assignments section of class.

BACKGROUND

You will be working as a field biologist for a wildlife conservation organization. Before going out to the field (the zoo, a park, your backyard, etc.) you should have completed all your preparation and be familiar with key words and concepts (see below). Your aim is to observe wildlife (not a pet), collect data and make observations and analyses. This will require taking notes and taking the time to do careful detailed observations. You should read also read pp. 28 – 40 from chapter 2 of your text book before starting.

DEFINITIONS

Trophic level- each step in the food chain

Producer (1st trophic level)-organisms that obtain their energy from the sun through photosynthesis. Examples: green plants, cyanobacteria

Consumer (2nd trophic level)- a herbivore (plant eater). Examples: grasshopper, chickadee, cow, parasitic plants

Consumer (3rd trophic level)- First-level carnivore (meat eater). Examples: spider, hawk, wolf, parasites. Note: there may be up to 4 levels of carnivores

Decomposer-organism that feed on dead organic material. Examples: fungi, flies, bacteria

.

Omnivore– eats both plant and animals Examples: bear, human, mullein bug

Ecological niche- the function or role of a species within an ecosystem; everything an organism does to survive and reproduce, including its place in the food web, its habitat, its breeding area and the time of day it is most active.

Food chain- a description of the way energy flows in a system. Each link in the chain feeds on and obtains energy from the stage preceding it. Most food chains are only 3 to 4 links long.

Food web- All food chains in a community make up a food web. A pictorial representation of the feeding relationships amongst organism in an ecosystem – who eats whom

Energy pyramids- a pyramid diagram that shows trophic levels and how there is less energy available at higher trophic levels – see figure 2-2 from the text book (pg. 32)

Sample: Food Chain and Food Web

image1.png

QUESTIONS

Observations

Select an animal or insect that interests you. Please do not choose a house pet or farm animal, as it’s very difficult to tease out the ecological relationships of pets since they are so tied to humans. Observe this wildlife for at least 15 minutes. Write down what you see, hear, smell, etc. You may use a combination of words and pictures. Record your observations.

1. What is the animal or insect you observed? (Or give its description if you don’t know it).

2. What is the ecological role or niche of your animal/insect?

3. What other organisms does your animal/insect interact with during your observations?

Analysis of data

1. Examine your field notes for the animal or insect you selected. Draw a food web. Describe the ecological role of each organism in the web.

2. Draw or describe in detail an energy pyramid that includes your animal or insect.

3. What would happen to the food web if your animal’s population became extinct? Or the habitat of the animal/insect disappeared? Draw or describe a new food web showing the changes and provide a written explanation.

 

Evolution Quiz

Evolution Quiz

Question 1

Select one answer.

10 points

Which are homologous features?

A. similar hind leg shape in hopping animals (grasshoppers, rabbits, fleas, kangaroos, frogs, etc.)

B. similar coloration (white in winter) in various Arctic bird and mammal species

C. similar overall body shape in creatures that live underwater (streamlining)

D. similar details of bone shape and arrangement in the vertebrate forelimb

..

Question 2

Select one answer.

10 points

What evolutionary response usually occurs in human host populations that have long been affected by a particular disease like malaria?

A. Humans can learn to better deal with the disease, for example by keeping away from mosquitoes. However, the basic biology of human beings cannot evolve.

B. The human host becomes more vulnerable to the disease because of the interaction between the host and the parasite.

C. The human host population evolves to be more resistant to the effects of the disease.

..

Question 3

Select one answer.

10 points

A biological lineage is a group of ____________ that evolves as an independent unit.

A. cells

B. unrelatedspecies

C. populations

D. alleles

E. genes

..

Question 4

Select one answer.

10 points

Sickle cell anemia is a disorder that results when a person is born homozygous for a certain hemoglobin allele (aa). What is the connection between malaria and sickle cell anemia?

A. The sickle cell allele protects against malaria in individuals that suffer from sickle cell anemia (aa homozygotes). These individuals reproduce better than average wherever malaria is common.

B. The sickle cell allele protects against malaria in heterozygotes (Aa). Therefore the allele is very frequent in regions where malaria is common.

C. The sickle cell allele makes the effects of malaria even worse; therefore it is absent from regions where malaria is common.

..

Question 5

Select one answer.

10 points

Which statement best sums up the modern theory of evolution?

A. Over the past 3 billion years, thousands of different life forms have arisen from non-life. Each one started independently and they have changed in a random way over time.

B. Each major form of life was created less than 10,000 years ago. Since then species have changed somewhat to better suit them to their environment.

C. Starting from one or a few life forms over 3 billion years ago, life has branched out. As life forms change, they tend to develop traits that aid their survival and reproduction.

..

Question 6

Select one answer.

10 points

The traits that are favored by natural selection improve an individual’s ability to _______.

A. meet the standards of human breeders

B. attract mates or compete for mating opportunities

C. survive and grow in a particular environment

D. mutate more rapidly so that future populations can evolve more quickly

..

Question 7

Select one answer.

10 points

The Class Mammalia includes all living species with hair and mammary glands plus related fossil species; it is a complete group containing all of the descendants of a common ancestor that also had these characteristics. Therefore the Class Mammalia is a ____________.

A. clade

B. species

C. genus

D. population

..

Question 8

Select one answer.

10 points

New lineages sometimes form when populations are isolated by physical (geographic) barriers. This process is known as _____________.

A. allopatric speciation

B. sympatric speciation

C. gene flow

D. sexual selection

E. natural selection

..

Question 9

Select one answer.

10 points

Ideally, in modern biology a taxonomic group such as the Phylum Platyhelminthes (flatworms) is…

A. a collection of unrelated species that share a few key characteristics such as a flat body shape.

B. a clade that includes all of the descendants of a common ancestor and are united by one or more inherited characteristics.

..

Question 10

Select one answer.

10 points

Which statement is true about Charles Darwin?

A. He was the first to ask questions about the origins of life

B. He was the first to publish the traditional belief of evolution.

C. He was the first to propose a hypothesis for the origin of life

D. He was the first to outline the modern theory of evolution

..

Question 11

Select one answer.

10 points

At the point labeled “2” in the diagram above, downward-pointing nostrils evolved. Which of the following groups should share this homologous feature with humans?

A. New world monkeys

B. Lemurs and lorises

C. Apes and Old world monkeys

D. Tarsiers

..

Question 12

Select one answer.

10 points

Biomedical research is directed at finding ways to support and protect human health. Where can biologists look if they wish to learn more about the detailed inner workings of the human body?

A. Biomedical research must be done on living human subjects, cultured human tissues, or cadavers (recently deceased humans). Studies of other organisms cannot be applied to address human health concerns.

B. Biomedical research can be done on a huge range of different species – everything from yeast to worms to monkeys. Humans are related to all life forms to some degree, and we can study all of them to learn more about our bodies and cells.

C. Biomedical research can be done on humans or on a few very closely related species – primates such as monkeys and apes. Other species do not offer useful information about humans, because they are not related to us.

..

Question 13

Select one answer.

10 points

Which is most likely to be a single gene pool? All of the genes and alleles that are found in…

A. all of the different species of birds that live in the State of Wisconsin.

B. all individuals of a widespread species of bird, including individuals living in Asia, Africa, North America, and Australia.

C. all individuals of a single species of bird (the Piping Plover) along the beaches of the Great Lakes in the Midwestern United States.

D. the cells of a single bird.

..

Question 14

Select one answer.

10 points

Over time, technologies change. For example the internal combustion engine has begun to change rapidly in recent years with new fuel-efficient designs and modifications. This is an example of biological evolution.

A. True

B. False

..

Question 15

Select one answer.

10 points

On a small island far out to sea lives an isolated population of iguanas (lizards). They are greenish brown in color. A bright pink and orange individual is born. It carries a new allele of a gene involved with pigmentation (color pattern). This new allele was probably added to the population through…

A. mutation

B. natural selection

C. sexual selection

D. genetic drift

E. gene flow

How did the surface area affect the diffusion of the block?

Student Name: Click here to enter text.

Kit Code (located on the lid of your lab kit): Click here to enter text.

Pre-Lab Questions:

“1. Identify the major similarities and differences between prokaryotic and eukaryotic cells. “

Click here to enter text.

“2. Where is the DNA housed in a prokaryotic cell? Where is it housed in a eukaryotic cell? “

Click here to enter text.

“3.Name three structures which provide support and protection in a eukaryotic cell. “

Click here to enter text.

Experiment 1: Cell Structure and Function

Post-Lab Questions

“1. Label each of the arrows in the following slide images: “

A- Click here to enter text.

B- Click here to enter text.

 

“2.What is the difference between the rough and smooth endoplasmic reticulum? “

Click here to enter text.

“3.Would an animal cell be able to survive without a mitochondria? Why or why not? “

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“4.What is the function of a lysosome? “

Click here to enter text.

 

Experiment 2: Exploring Cell Size

 

Table 2: Results from Surface Area to Volume Experiment
Block Dimensions Surface Area (cm2) Volume (cm 3) Time Required for Complete Color Change Distance of Diffusion
1 cm x 1 cm x 1 cm Click here to enter text. Click here to enter text. Click here to enter text. Click here to enter text.
1 cm x 2 cm x 2 cm Click here to enter text. Click here to enter text. Click here to enter text. Click here to enter text.
1 cm x 1 cm x 6 cm Click here to enter text. Click here to enter text. Click here to enter text. Click here to enter text.

 

Post-Lab Questions

“1.How did the surface area affect the diffusion of the block? What about the volume? What about the surface area to volume ratio? Which of these had the greatest effect on the diffusion of the block? “

Click here to enter text.

“2.How does this experiment demonstrate the need for larger cells to divide? “

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“3.Determine the surface area, volume, and surface area to volume ratio for the following three blocks and record your answers in the table below. Then, state which block you believe would be the most efficient as a cellular morphology, and write a summary stating why. “

1.5 cm x 1.5 cm x 1.5 cm

0.5 cm x 0.5 cm x 6.0 cm m

3.0 cm x 2.0 cm x 2.0 cm

1.5 cm x 1.5 cm x 1.5 cm

0.5 cm x 0.5 cm x 6.0 cm m

3.0 cm x 2.0 cm x 2.0 cm

B)

C)

Block  Surface Area (cm2) Volume (cm 3) Surface Area:Volume
A Click here to enter text. Click here to enter text. Click here to enter text.
B Click here to enter text. Click here to enter text. Click here to enter text.
C Click here to enter text. Click here to enter text. Click here to enter text.

 

“Most Efficient Block (and why): “