4/15/2015 BIO156 Lab 2 Print Lab 2 Biological Molecules and pH Introduction: Connecting Your Learning Biological organisms, like all things, are made up of elements. These elements combine to form organic molecules that create the basis for life. The main elements found in biological organisms include carbon (C), hydrogen (H), phosphorus (P), nitrogen (N), and oxygen (O). This lab describes how these elements form some of the most important molecules in life: carbohydrates, proteins, and fats. Resources and Assignments Multimedia Resources Required Assignments None Lesson 2 Lab 2 From the Lab Kit 7 test tubes Benedict's solution Biuret solution 15 micropipettes 10 pipettes Forceps pH test strips …show more content…
2. Explain how the properties of the carbon atom contribute to its importance in forming a variety of different compounds. 3. State the name and structure of the functional group for each type of biologically important molecule. 4. Describe the test used to detect the presence of each type of biologically important molecule. https://www.riolearn.org/content/bio/BIO156/BIO156_INTER_0000_v9/labs/lab02.shtml?print 3/21 4/15/2015 BIO156 Lab 2 2. Using the atom and bond library below, construct the following molecule. It may be necessary to consult the textbook for the formula. A. Glucose Diagram the molecule for study purposes. Biochemical Analysis Activity *****Safety Note: Please remove the safety goggles and gloves from the lab kit and wear them for all of the remaining steps in this laboratory.***** 1. In preparation for performing the biological analysis tests, solutions of several food items presently in solid form in the lab kit or purchased separately for this laboratory must be prepared by following the steps below. A. Take the samples from the lab kit. There should be four unknown samples. B. Label four plastic cups with the numbers 1, 2, 3, and 4. C. Pour about one quarter of the first unknown packet into the first cup and add enough distilled water to dissolve the sample (start with approximately 30 mL of water). D. Using a spoon, stir until the sample is dissolved. Not all solids will
1. Arrange the following molecules from least to most specific with respect to the original nucleotide sequence: RNA, DNA, Amino Acid, Protein
1) The layer of the GI tract wall that is responsible for motility is the
Cellular respiration: C6H12O6 + 6O2 → 6CO2 + 6 H2O + 36 or 38 ATP
1. Describe the function of the following pieces of safety equipment and how each might be used: (10 points)
Lake Malawi’s cichlid male population of fish are tested on their ability to build bowers to attract the female population. Altering this extended phenotype, or ability to build bowers resulted in no change of mating, but males that built successful bowers showed to
1. Record your hypothesis about what will happen when Biuret solution is mixed with the solutions from test tubes 1, 2, 3, and 4 here. Be sure to use scientific reasoning to support your hypothesis.
Answer the lab questions for this week and summarize the lab experience using this form.
Please answer these questions then place them in the drop box for this lab. Use Microsoft word if possible.
▪ Know the functions of the various organelles, e.g., glyoxysomes, peroxisomes, ribosomes, chloroplasts, mitochondria, rough and smooth ER, Golgi, etc.
2. Four unknown samples were included in the lab kit: flax seed meal, potato starch, egg whites, and dried milk. Using the results of the biochemical testing, determine which number corresponds to the correct unknown. (8 points)
7-1: Five simplified diagrams of biological molecules are shown below. Identify the molecules using the key choices below. Insert letter of correct answer into space provided. Chose only one answer for each description.
11. Define the following: Genetic drift: unpredictable fluctuations in allele frequencies, reduces genetic variation over time through such losses of alleles
group. The location of this hydroxyl functional group will impact the molecular structure of the
Purpose: What is the purpose of this exercise? Are there any safety concerns associated with this exercise? If so, list what they are and what precautions should be taken. To understand the structure and function of multipolar neuron,unipolar and bipolar neurons. Also to identify the structures of a nerve. There are no safety concerns for this lab.
contains one oxygen and four carbons. A fifth carbon atom is attached to the fourth carbon of the ring.