Biology 120 lab manual answers

Biology 120 lab manual answers

During these challenging times, we guarantee we will work tirelessly to support you. We will continue to give you accurate and timely information throughout the crisis, and we will deliver on our mission — to help everyone in the world learn how to do anything — no matter what. Thank you to our community and to all of our readers who are working to aid others in this time of crisis, and to all of those who are making personal sacrifices for the good of their communities.

We will get through this together. Updated: March 29, References. When writing a scientific research paper or report, you may find that you need to cite a lab manual. The format and specific information included in your citation will differ depending on the citation style you're using. To cite a lab manual using the APA format, start with the department name as the author and follow with a period.

Next, identify the year and semester that the manual was used in parentheses, place a comma in between, and then place a period after the closed parentheses. Next, list the title of the manual and place a period after the title. Then, write the location and name of the university and follow with a period.

Finally, if the lab manual is available online, add the URL to the website. Did this summary help you? Yes No. Log in Facebook Loading Google Loading Civic Loading No account yet?

Create an account. We use cookies to make wikiHow great.Cells have kinetic energy. This causes the molecules of the cell to move around and bump into each other. Diffusion is one result of this molecular movement. Diffusion is the random movement of molecules from an area of higher concentration to areas of lower concentration. Osmosis is a special kind of diffusion where water moves through a selectively permeable membrane a membrane that only allows certain molecules to diffuse though.

Diffusion or osmosis occurs until dynamic equilibrium has been reached. This is the point where the concentrations in both areas are equal and no net movement will occur from one area to another. If two solutions have the same solute concentration, the solutions are said to be isotonic. If the solutions differ in concentration, the area with the higher solute concentration is hypertonic and the area with the lower solute concentration is hypotonic. Since a hypotonic solution contains a higher level of solute, it has a high solute potential and low water potential.

This is because water potential and solute potential are inversely proportional. A hypotonic solution would have a high water potential and a low solute potential.

An isotonic solution would have equal solute and water potentials.

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Water potential y is composed of two main things, a physical pressure component, pressure potential ypand the effects of solutes, solute potential ys.

Water will always move from areas of high water potential to areas of low water potential. The force of water in a cell against its plasma membrane causes the cell to have turgor pressure, which helps maintain the shape of the cell. When water moves out of a cell, the cell will loose turgor pressure along with water potential. Turgor pressure of a plant cell is usually attained while in a hypotonic solution. The loss of water and turgor pressure while a cell is in a hypertonic solution is called plasmolysis.

Hypothesis : During these experiments, it will be proven that diffusion and osmosis occur between solutions of different concentrations until dynamic equilibrium is reached, affecting the cell by causing plasmolysis or increased turgor pressure during the process. Lab 1B — For Lab 1B you will need to collect six presoaked dialysis tubing strips, distilled water; 0.

Lab 1C — Lab 1C these items are needed: a potato, knife, potato core borers, six different solutions, and a scale. Lab 1D — During Lab 1D, only paper, pencil, and a calculator will be needed to make the calculations. Test the solution for presence of glucose. Test the beaker of distilled water and IKI for presence of glucose. Put the dialysis bag into the beaker and let stand for 30 minutes.

When time is up test both the bag and the beaker for presence of glucose. Record all data in table. Lab 1B — Obtain the six strips of dialysis tubing and fill each with a solution of a different molarity.Without javascript some functions will not work, including question submission via the form.

How do I cite a lab manual in MLA style 8th edition? Toggle menu visibility Search our Knowledgebase Search Browse:. If the lab manual has been published, cite it as you would any other book.

Published titles will have a publication information listed on the title page. Here are the basics:. Last Name, First Name. Title of Book. Publisher, Publication Date.

Smith, Jane. Manual for Physics. College Publishing, If the lab manual was created by a staff member or department of the school and is only available through the class, cite it as an unpublished work. If a department prepared the manual, use it for the name in the citation. Organization associated with document.

biology 120 lab manual answers

Science and Math Department. College of the Mainland. Lab handbook. Was this helpful? Visit us at COM Library. Email us. Fill Out a form. About COM Library. Warning: Your browser has javascript disabled.An introduction to the underlying fundamental aspects of living systems: covering cell biology, genetics and the evolutionary processes which lead to complex, multi-cellular life forms.

Note: Chemistry 30 is strongly recommended. For full details about upcoming courses, refer to the class search tool or, if you are a current student, the registration channel in PAWS.

The syllabus is a public document that provides detail about a class, such as the schedule of activities, learning outcomes, and weighting of assignments and examinations. Please note that the examples provided below do not represent a complete set of current or previous syllabus material.

Rather, they are presented solely for the purpose of indicating what may be required for a given class. It is recommended that students also have online access to syllabi prior to the beginning of the class. Instructors who post their syllabus on publically accessible websites may wish to redact certain information that is not related to the core instruction of the class e.

Once an instructor has made their syllabus publicly available on Blackboard, it will appear below. For more information about syllabi, visit the Academic Courses Policy. Description Upcoming class offerings Syllabi Resources. Class search Registration channel. JavaScript is required to load Syllabi content.Hydrogen peroxide is a toxic product of many chemical reactions that occur in living things. Although it is produced in small amounts, living things must detoxify this compound and break down hydrogen peroxide into water and oxygen, two non-harmful molecules.

The organelle responsible for destroying hydrogen peroxide is the peroxisome using the enzyme catalase. Both plants and animals have peroxisomes with catalase.

Enzymes speed the rate of chemical reactions. A catalyst is a chemical involved in, but not consumed in, a chemical reaction. Enzymes are proteins that catalyze biochemical reactions by lowering the activation energy necessary to break the chemical bonds in reactants and form new chemical bonds in the products.

Catalysts bring reactants closer together in the appropriate orientation and weaken bonds, increasing the reaction rate. Without enzymes, chemical reactions would occur too slowly to sustain life. The functionality of an enzyme is determined by the shape of the enzyme. The area in which bonds of the reactant s are broken is known as the active site. The reactants of enzyme catalyzed reactions are called substrates.

The active site of an enzyme recognizes, confines, and orients the substrate in a particular direction. Enzymes are substrate specific, meaning that they catalyze only specific reactions. For example, proteases enzymes that break peptide bonds in proteins will not work on starch which is broken down by the enzyme amylase.

Notice that both of these enzymes end in the suffix -ase. This suffix indicates that a molecule is an enzyme. Environmental factors may affect the ability of enzymes to function.

You will design a set of experiments to examine the effects of temperature, pH, and substrate concentration on the ability of enzymes to catalyze chemical reactions. In particular, you will be examining the effects of these environmental factors on the ability of catalase to convert H 2 O 2 into H 2 O and O 2. As scientists, biologists apply the scientific method. Science is not simply a list of facts, but is an approach to understanding the world around us.Bio is a required course for freshman biology and biochemistry majors and minors.

If you are not in the biology major or minor program or the biochemistry major, then you should drop this course immediately. It does not meet the LAC requirements for any other students! This course should substantially meet the objectives of the LAC Tier 1 courses:. The structure and function of organisms is the focus of this course.

Q. How do I cite a lab manual in MLA style 8th edition?

In exploring the diversity of living organisms, we consider the basic problems faced by all living organisms and compare the diverse solutions that have evolved among the branches of the tree of life bacteria, archaea, protists, stramenopila, rhodophytes, plants, fungi, and animals.

The fundamental concepts include: cell structure, homeostasis obtaining minerals and nutrients, exchanging gases, transporting materials, maintaining temperature, balancing solutesgrowth, movement, reproduction, and evolution. In weekly laboratory exercises you measure, observe, and design and execute experiments with living organisms. You sketch and label diagrams of organisms at cell, tissue, system, and whole-body levels.

You build, revise, and interpret cladograms based on morphological, nucleotide, and amino acid data. You prepare smears, wet mounts, and hand sections and other specimens for observation and testing in compound and dissection microscopes, and use spectrophotometers.

biology 120 lab manual answers

You gain experience in serial dilution and axenic culture techniques. You document organismal responses to a range of stimuli. This course provides up to 2 of the 8 points needed to met the university second stage writing requirement Bio We concentrate on writing the title, materials and methods, and results sections of research articles.

You prepare professional tables and graphs, conduct appropriate statistical testing of results, and express data with attention to rounding and precision. This course provides three hours of lecture and 3 hours of laboratory experience each week.

A final course grade of C- or better is required in this course to proceed into the sophomore core courses. This semester, our approach is called "flipping" the class; the idea is that you will prepare for class so that you are coming to class already knowing the material.

Lab 1 Osmosis

In the classroom we will practice from what you know, apply what you know to new situations, or examine case studies related to what you know. The reason professors are "flipping" classes is to help you transition from the K model of you being taught notice how passive that is to what will be happening to you for the rest of your life.

biology 120 lab manual answers

We are the last of your teachers; from here on out it is up to you to learn on your own, and to put youself into practice as a scientist. You have to become a teacherless lifelong learner. You will want to pay close attention to the instructor when teaching you about metacognition how your brain works to help you learnand apply the techniques that are suggested to assist your learning. For this class you have to learn about each topic before class so you can participate in class.

The days of arriving on "empty" are left behind in K education; now you need to arrive to class on "full" tank, ready to go. On the job after college, this is how you avoid hearing "the Donald" from your boss. With this in mind, how do you fill up?View larger. Pearson offers special pricing when you package your text with other student resources.

If you're interested in creating a cost-saving package for your students, contact your Pearson rep. We're sorry! We don't recognize your username or password. Please try again.

The work is protected by local and international copyright laws and is provided solely for the use of instructors in teaching their courses and assessing student learning.

You have successfully signed out and will be required to sign back in should you need to download more resources. This title is out of print. Answer Key to Lab Manual, 9th Edition. Overview Order Downloadable Resources Overview. Description Solutions to each exercise in the Laboratory Manual, complete with diagrams, graphs and maps.

Download Resources. Sign In We're sorry! Username Password Forgot your username or password? Sign Up Already have an access code? Instructor resource file download The work is protected by local and international copyright laws and is provided solely for the use of instructors in teaching their courses and assessing student learning. Signed out You have successfully signed out and will be required to sign back in should you need to download more resources.

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