Describe the nucleus and the function of each of its components, including the nuclear envelope, chromatin, chromosomes, DNA, and the nucleolus.

Intro Bio

Week 1 Assignment

Start by reading and following these instructions:

1. Quickly skim the questions or assignment below and the assignment rubric to help you focus.

2. Read the required chapter(s) of the textbook and any additional recommended resources. Some answers may require you to do additional research on the Internet or in other reference sources. Choose your sources carefully.

3. Consider the discussion and the any insights you gained from it.

4. Create your Assignment submission and be sure to cite your sources, use APA style as required, check your spelling.

5.  Use a separate double-spaced page for each prompt below (about 250 words per page).

Assignment:

· What are the three parts of the cell theory?

· Describe the nucleus and the function of each of its components, including the nuclear envelope, chromatin, chromosomes, DNA, and the nucleolus.

· What are the functions of mitochondria and chloroplasts? Why do scientists believe that these organelles arose from prokaryotic cells?

· What is the function of ribosomes? Where in the cell are they found? Are the limited to eukaryotic cells?

· Describe the structure and function of the endoplasmic reticulum and the Golgi Apparatus and how they work together.

· How are lysosomes formed? What is their function?

WEEK 2 Assignment

Start by reading and following these instructions:

1. Quickly skim the questions or assignment below and the assignment rubric to help you focus.

2. Read the required chapter(s) of the textbook and any additional recommended resources. Some answers may require you to do additional research on the Internet or in other reference sources. Choose your sources carefully.

3. Consider the discussion and the any insights you gained from it.

4. Create your Assignment submission and be sure to cite your sources, use APA style as required, check your spelling.

5.  LENGTH: approximately 1500 words

Assignment:

· Explain why organisms do not violate the second law of thermodynamics. What is the ultimate energy source for most forms of life on Earth?

· Describe a chloroplast and then explain how chloroplast structure is related to its function.

· Outline the two major stages of glycolysis. How many ATP molecules (overall) are generated per glucose molecule during glycolysis? Where in the cell does glycolysis occur?

· Write the overall equation for photosynthesis and explain it.

Week 3 Assignment

Start by reading and following these instructions:

1. Quickly skim the questions or assignment below and the assignment rubric to help you focus.

2. Read the required chapter(s) of the textbook and any additional recommended resources. Some answers may require you to do additional research on the Internet or in other reference sources. Choose your sources carefully.

3. Consider the discussion and the any insights you gained from it.

4. Create your Assignment submission and be sure to cite your sources, use APA style as required, check your spelling.

5.  LENGTH: approximately 1500 words

Assignment:

· What is the process by which Prokaryotic cells divide called?

· What are the four phases of Mitosis?

· Define Mitosis and cytokinesis. What changes in cell structure would result if cytokinesis doe not occur after mitosis?

· Describe and compare the process of cytokinesis in animal cells and plant cells.

· How is the cell cycle controlled? Why must the progression of cells through the cell cycle be regulated?

· Compare and contrast mitosis and meiosis.

WEEK 4 Assignment

Start by reading and following these instructions:

1. Quickly skim the questions or assignment below and the assignment rubric to help you focus.

2. Read the required chapter(s) of the textbook and any additional recommended resources. Some answers may require you to do additional research on the Internet or in other reference sources. Choose your sources carefully.

3. Consider the discussion and the any insights you gained from it.

4. Create your Assignment submission and be sure to cite your sources, use APA style as required, check your spelling.

5.  LENGTH: approximately 1500 words

Assignment:

· Compare and Contrast the terms “allele” and “gene.”

· Define the following terms: gene, allele, dominant, recessive, true-breeding, homozygous, cross-fertilization, self-fertilization

· What is sex linkage? In mammals, which sex would be most likely to show recessive sex-linked traits?

· What is the difference between phenotype and a genotype? Does knowledge of an organism’s phenotype always allow you to determine the genotype? What type of experiment would you perform to determine the genotype of a phenotypically dominant individual?

· Complete the following genetic problem using the Punnet Square Method. Create a chart for each of the listed combinations.

· In the edible pea, tall (T) is dominant to short (t), and green pods (G) are dominant to yellow (g). List the types of gametes and offspring that would be produced in the following crosses:

· TtGg x TtGg

· TtGg x TTGG

· TtGg x Ttgg

Week 5 Assignment

Start by reading and following these instructions:

1. Quickly skim the questions or assignment below and the assignment rubric to help you focus.

2. Read the required chapter(s) of the textbook and any additional recommended resources. Some answers may require you to do additional research on the Internet or in other reference sources. Choose your sources carefully.

3. Consider the discussion and the any insights you gained from it.

4. Create your Assignment submission and be sure to cite your sources, use APA style as required, check your spelling.

5.  LENGTH: approximately 1500 words

Assignment:

· Name the four types of nitrogen-containing bases found in DNA

· Which bases are complementary to one another? How are they held together in the double helix of DNA?

· Describe the structure of DNA. Where are the bases, sugars, and phosphates in the structure?

· Describe the process of DNA replication.

· How do mutations occur? Describe the principal types of mutations.

· Re-read “Scientific Inquiry: The discovery of the Double Helix” on page 208. As you learned in this reading, scientists in different laboratories often compete with one another to make new discoveries. Do you think this competition helps promote scientific discoveries? Sometimes researchers in different laboratories collaborate with one another. What advantages does collaboration offer over competition? What factors might provide barriers to collaboration and lead to competition?

WEEK 6 Assignment

Start by reading and following these instructions:

1. Quickly skim the questions or assignment below and the assignment rubric to help you focus.

2. Read the required chapter(s) of the textbook and any additional recommended resources. Some answers may require you to do additional research on the Internet or in other reference sources. Choose your sources carefully.

3. Consider the discussion and the any insights you gained from it.

4. Create your Assignment submission and be sure to cite your sources, use APA style as required, check your spelling.

5.  LENGTH: approximately 1500 words

Assignment:

· Both the theory of evolution by natural selection and the theory of special creation (which states that all species were simultaneously created by God) have had an impact pm evolutionary thought. Discuss why one is considered to be a scientific theory and the other is not.

· What is natural selection?

· How do biochemistry and molecular genetics contribute to the evidence that evolution occurred?

· What is a gene pool? How would you determine the allele frequencies in a gene pool?

· Describe three ways in which natural selection can affect a population over time.

· What is sexual selection? How is sexual selection similar to and different from other forms of natural selection?

WEEK 7 Assignment

Start by reading and following these instructions:

1. Quickly skim the questions or assignment below and the assignment rubric to help you focus.

2. Read the required chapter(s) of the textbook and any additional recommended resources. Some answers may require you to do additional research on the Internet or in other reference sources. Choose your sources carefully.

3. Consider the discussion and the any insights you gained from it.

4. Create your Assignment submission and be sure to cite your sources, use APA style as required, check your spelling.

5.  LENGTH: approximately 1500 words

Assignment:

· Define the following terms: species, speciation, allopatric speciation, and sympatric speciation. Explain how allopatric and sympatric speciation might work and give a hypothetical example of each.

· What are the two major types of reproductive isolating mechanisms? Give examples of each type and describe how they work.

· Explain the endosymbiotic hypothesis for the origin of chloroplasts and mitochondria.

· Name two advantages of multicellularity for plans and two for animals.

· Outline the major adaptations that emerged during the evolution of vertebrates, from fish to amphibians to reptiles to birds to mammals. Explain how these adaptations increased the fitness of the various groups for life on land.

· Outline the evolution of humans from early primates. Include in your discussion such features as binocular vision, grasping hands, bipedal locomotion, tool making, and brain expansion.

WEEK 8 Assignment

Start by reading and following these instructions:

1. Quickly skim the questions or assignment below and the assignment rubric to help you focus.

2. Read the required chapter(s) of the textbook and any additional recommended resources. Some answers may require you to do additional research on the Internet or in other reference sources. Choose your sources carefully.

3. Consider the discussion and the any insights you gained from it.

4. Create your Assignment submission and be sure to cite your sources, use APA style as required, check your spelling.

5.  LENGTH: approximately 1500 words

Assignment:

· What makes the flow of energy through ecosystems fundamentally different from the flow of nutrients?

· How do food chains and food webs differ? Which is the more accurate representation of actual feeding relationships in ecosystems?

· What are the four major requirements for life? Which two are most often limiting in terrestrial ecosystems? In ocean systems?

· Distinguish between oligotrophic and eutrophic lakes.

· Distinguish between the photic and aphotic zones.

· In which terrestrial biome is your home located? Discuss similarities and differences between your location and the general description of that biome in the text. In the city or town where your home is located, how has human domination modified community interactions?

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