Category: Biology

1.      
Bats and humans are both mammals and share a
common ancestor. Because of this, a human arm and a bat wing have similar bone
structure. In contrast, bird wings and bat wings have different structures.
Explain these relationships in terms of homologous and analogous structures.
2.      
The Channel Islands are a series of small
islands off the California coast. Each island has a genetically distinct population
of foxes. Compare the population of foxes on one of these islands to the
population of foxes in the forests of mainland California. Which is more likely
to be impacted by genetic drift? Which is more likely to be at Hardy-Weinberg
equilibrium?
3.      
Living organisms are commonly divided into six
kingdoms: archaea, bacteria, fungi, protists, plants, and animals. What’s the
biggest problem with classifying organisms in this way?
4.      
a.      
How do radioactive elements help scientists
establish how old rocks and fossils are?
b.      
How do index fossils help scientists establish
how old rocks and other fossils are? In your answer, include fossils in the
same layer of rock, in a lower layer of rock, and in a higher layer of rock
compared to an index fossil.
5.      
Compare and contrast the lytic and lysogenic
life cycles of viruses. How does the virus reproduce in each of these life
cycles? What happens to the host cell in each of these life cycles?
6.      
Seeds are one way that plants reproduce.
a.      
What are the reproductive advantages of using
seeds to reproduce?
b.      
What are the two major divisions of seed plants,
and how do plants in each of these divisions reproduce?
7.      
How is water transported into and through a
plant? In your answer, describe the processes that move water into three
different structures of a plant.
8.      
Describe two ways that plants respond to their environment,
giving an example of each. Your answer can include ways that plants respond to
seasonal changes, light, gravity, or touch.
9.      
Define radial
symmetry, bilateral symmetry, and asymmetry
in animals. Provide an example of an animal with each body plan. To which of
these categories to humans belong?
10.  
Compare and contrast respiration in fish and in humans.
What is the goal of respiration? How is this goal accomplished?
11.  
Differentiate between mechanical and chemical
digestion. Where do each of these types of digestion take place?
12.  
Describe the structure of a neuron. Include the
cell body, dendrites, and axon in your description. How does the structure of a
neuron help it carry out its function efficiently?
13.  
What are osteoblasts and osteoclasts? Describe
how these cells work together in a healthy person. What can occur if these
processes are unbalanced?
14.  
Humans have one of four blood types: A, B, AB,
or O. Explain what determines a person’s blood type. What antigens are on the
blood cells in a person with each of these blood types? What antibodies are in
the blood of a person with each of these blood types?
15.  
Compare and contrast exocrine and endocrine
glands. Provide an example of an exocrine gland, an exocrine secretion, an
endocrine gland, and an endocrine secretion.

Write a 750-1,000-word essay about water quality in your community that addresses the following points:
Obtain a water quality report from your local municipality within the last two years and discuss what you found in the report. 
Identify a water quality issue happening in your community and where the pollution comes from. This includes point sources (for example, water discharge from a factory; contamination from a Superfund site), non-point sources (for example, agricultural runoff), and natural sources.
Describe how the pollution source is impacting the environment and human health in your community, and provide two examples of each.
Identify three management practices to minimize water pollution.
Remember to support your data and information with appropriate citations. A minimum of five peer-reviewed references must be included.
Prepare this assignment according to the guidelines found in the APA Style Guide, located in the Student Success Center.
This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.
You are required to submit this assignment to LopesWrite. A link to the LopesWrite technical support articles is located in Class Resources if you need assistance.

Describe the external function of a leaf
Describe the internal function of a leaf
Photosynthesis and the leaf
Fall coloration and wilting
**i will attach the format in which it should be written

answer question Please check for plagarims  
A student observes that she’s always sleepy shortly after eating lunch, and she wants to be able
to pay better attention in her mid-afternoon class. She tried doing 10 jumping jacks just before
the class, but still felt sleepy around the middle of the class. The next day, she tried sipping
water throughout the class and found that she could pay attention until the end of the class. The
student now brings a water bottle to class.
Identify how this student applied the scientific method to solve her problem.
2. The model of electrons orbiting around the nucleus like planets orbit the sun has been proven to
be inaccurate. What’s a more accurate way to describe electron orbitals?
3. How do covalent bonds differ from ionic bonds? Describe how each of these bonds is formed.
4. Natural cycles circulate several resources. Describe the water cycle. What happens to water at
each stage of the cycle, and what drives this cycle?
5. Toxoplasma is a protist that must infect cats to be able to reproduce. The infection doesn’t
benefit cats and only rarely harms them. What type of symbiotic relationship is this, and why?
6. Compare and contrast the location and function of ribosomes in prokaryotic and eukaryotic
cells.
7. Describe the structure of the plasma membrane. What structures are on the side of the
membrane facing the environment, the side of the membrane facing the cell, and the inside of
the membrane?
8. Compare and contrast aerobic and anaerobic respiration. Which process yields more ATP?
What’s the final electron acceptor in each process?
9. Compare and contrast meiosis and mitosis. How many daughter cells are produced by each, and
how many chromosomes do they have? In what contexts do meiosis and mitosis occur?
10. Explain why cell cycle regulators are critical to the health of an organism. What can happen if
cell division is allowed to proceed without being regulated?
11. A person without the allele for sickle cell anemia has children with a person who is a carrier for
sickle cell anemia but doesn’t have the disease. What percentage of their children will have
sickle cell anemia? What percentage of their children will be carriers for sickle cell anemia?
Show your work with a Punnett square. You can copy/paste the blank table below or create a
table in the submission box to complete the Punnett square.
12. Explain how the Hershey-Chase experiment used bacteriophages with radioactive sulfur and
radioactive phosphorus to demonstrate that DNA, and not protein, is the carrier of genetic
information.
13. What are the three main types of RNA involved in gene expression? Briefly describe the role of
each of these types of RNA in gene expression.
14. Compare and contrast a frameshift mutation and a single nucleotide substitution mutation in a
DNA sequence encoding a protein. How many nucleotides would be inserted or deleted in each?
How many amino acids in the protein sequence would be altered in each?
15. Some types of muscular dystrophy are X-linked recessive disorders. A mother who is a carrier for
muscular dystrophy has children with a father who doesn’t have muscular dystrophy.
a. What percentage of their sons will have the disease, and what percentage of their sons
will be carriers?
b. What percentage of their daughters will have the disease, and what percentage of their
daughters will be carriers?
Show your work with a Punnett Square, using X
D
to represent the allele not associated with
muscular dystrophy and X
d
to represent the allele associated with muscular dystrophy. You
can copy/paste the blank table below or create a table in the submission box to complete
the Punnett square.

medical and environmental microbiology lab coursework, calculation, questions and results
there is two labs: water and food lab (combined) and infection lab.
i have attached lab protocols and data needed, only the ”
Evaluating the Microbiological Quality of Water and Examination of Foods in the Lab – Coursework Handbook” and “Microbiological Investigation of an Infection Outbreak – Coursework Handbook” should be completed. 

write a 5 page reflection paper on how interesting I found this bird and the Importance for the ecosystem at Joshua Trees. also why out of all the things I saw on the field trip the one I found most interesting were those birds.

Proofread and edit entire paper to avoid plagiarism and format properly.
Instructions for the paper are :
Summaries (summarize in your own words the main points of the assigned reading)
2. Reflections (reflect on relevance of readings to your own life, personal experiences, internal and
external class discussions, etc.) , Dr. Tatiana’s is split into 3 parts (NOT CHAPTERS), so a 300-450 word summary is needed for each part. , Dr. Tatiana’s is split into 3 parts (NOT CHAPTERS), so a 500-700 word reflection is needed for each part.

There is a presentation that you should use information from it to help complete your assignment. You can also use other sources as well for the essays. I want you to answer two of these questions separately in essay form. – Describe examples of the importance of cell migration,
including germ cell migration, entry of muscle into limb buds, gastrulation in amniotes and formation of the neural crest.
– Explain the distinction between epithelial and mesenchymal cells.

Identify & describe a problem in a community in which you belong 
A little history & background on the problem 
A timeline (how many weeks, days, etc to accomplish your goal)
Talk about the biology of the problem
use vocab words 
must be biologically accurate
Is there anyone else currently trying to address the issue? What is/isnt working for them?
be critical of their work
Apply something we have covered in lecture to try to address the issue 
Make a plan to address the issue
give specifics 
What would you need in order to carry it out?
supply list, help of specific people?
How would you define “success” for your plan?
hard numbers (% and in what time frame?)
Subject of paper is obesity and I’m located in long beach.

im supposed to do a power point about Charles darwin answering these questions 
• Where was this person raised?
• What led this person to pursue science?
• What education did this person pursue?
• What challenges did this person face?
• What did this person contribute to biology?
• Who has their work impacted?
• Are there downfalls/controversies associated with their work? If so, what are they? Who has th Are there downfalls/controversies associated with their work? If so, what are the