Last week we introduced cells as the basic unit of structure and function in living organisms. But in order to function, a cell needs energy.
Many living organisms—including humans—ingest food as a means to create energy. The organism’s digestive system breaks down the food’s biological macromolecules such as carbohydrates into sugars. When those sugar molecules are broken down, energy is produced. We measure this energy in units of adenosine triphosphate (ATP). ATP is used by cells as a source of energy.
Other organisms, such as plants, can produce energy without ingesting food. Plants produce energy from light through a process known as photosynthesis. As a human, your food comes from either plants or animals that eat plants. This means that the energy in your body depends, on some level, on plant photosynthesis. Without plant photosynthesis, we wouldn’t be able to get the energy we need from our food.
This week, we will look at ways cells create energy, the ways they acquire what they need to create energy, and how they transfer energy throughout an organism’s body.
The living cells of every organism constantly use energy. Cells import molecules, metabolize or otherwise modify them, then transport them around the cell, potentially even distributing products back out of the cell to the entire organism.
Metabolism is the sum of all chemical reactions that occur in a living organism. A key feature of metabolism is that chemical reactions often make the materials needed for other chemical reactions. Metabolism both builds bigger molecules from smaller ones and dismantles molecules to release atoms and energy.
Photosynthesis is one of the most important sets of chemical reactions in all of nature for more than just the energy it produces. In addition to being the pathway through which energy and carbon (in the form of glucose) enter the web of life, it also releases oxygen into the environment. Life as we know it would not exist without photosynthesis. This is quite an important role in nature!
You will participate in a class discussion related to topics in biology.
You will also complete a laboratory experiment on parts of the cell, including cell membranes.
And you will demonstrate your knowledge of course concepts with a quiz.
Next week we will study the life cycle of single cells and cell reproduction. Combined, these processes allow for existing cells to make new cells. The ability of living organisms to produce new cells is important for three of the major characteristics of life: growth, healing, and reproduction.
Week 3 Outcomes
By the end of this week, you should be able to
Why Work with Us
Top Quality and Well-Researched Papers
We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.
Professional and Experienced Academic Writers
We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.
Free Unlimited Revisions
If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.
Prompt Delivery and 100% Money-Back-Guarantee
All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.
Original & Confidential
We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.
24/7 Customer Support
Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.
Try it now!
How it works?
Follow these simple steps to get your paper done
Place your order
Fill in the order form and provide all details of your assignment.
Proceed with the payment
Choose the payment system that suits you most.
Receive the final file
Once your paper is ready, we will email it to you.
No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.
No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.
Admission Essays & Business Writing Help
An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.
Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.
If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.