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Biological Sciences Essay Examples

Bio 101 Week 4 Assignment

Organism Physiology: The Octopus Bio/101 The cephalopodor octopus is a marine organism that inhabits many diverse regions of the ocean. Its food source consists of crabs, small fish, clams, mussels and other marine animals. The octopus is a predatory animal and has developed many skills to aid in its survival in the environment it has…

Report: Goldfish Respiration Lab

According to “The Respiration System of a Goldfish” by Sarah Quintal, at lower temperatures the surface area for gas exchange increases, while the breathing rate decreases . Several different variables took part of this experiment; the controlled variable was the goldfish, the independent variable was the temperature of the water, and the dependent variable was…

Mendelian Genetics Lab Report

It’s also the framework for the modern research that is making inroads in treating diseases previously believed to be incurable. In this era of genetic engineering the incorporation of foreign DNA into chromosomes of unrelated species?it easy to lose sight of the basics of the process that makes it all possible. These were his conclusions:…

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Amylase lab report

Enzymes are very specific; for example, amylase is the only enzyme that will break down starch. It is similar to the theory of the lock and the key. The enzyme is the lock and the key is the substrate; only the correct key could fit into the keyhole of the lock. Porcine pancreatic amylase is…

IB Bio lab report on photosynthesis

This process takes place in he chloroplasts of plants, which include chlorophyll. Chlorophyll is essential for photosynthesis, since it absorbs the sun’s light. Green plants then use this light to combine CO and H2O for making sugars and oxygen. After this process Oxygen is being released though pores called stomata. The overall reaction can be…

Agar Cube Lab Report

Hypothesis: I expect to find that when the surface area o volume of a cell reaches a certain level, diffusion alone won’t be able to supply the cell materials needed, and as single-celled organisms take in and release substances by means of diffusion across the cell membrane, this process limits cell size. I predict that…

The Cenozoic Era

The Cenozoic Era, which describes the period 65 million years ago (mya) to the present, is a very phase in evolution because it involved the emergence of a variety of species from plants, arthropods, fishes, reptiles and mammals.

Lab report on enzyme activity.

The reactant an enzyme acts on is referred to the enzyme’s substrate. The enzyme will combine with or to its substrate. While the two are joined, the substrate is converted to its product by catalytic action of the enzyme. There is an active site of the enzyme molecule which is a restricted region that actually…

AP Biology Lab Report for Population Genetics

The data was found using a program called Popsicle (Heron 2002), which picked genotypes Mandalay, and showed the results after particular conditions were entered. Students took these numbers and visually displayed them in charts. They configured the predicted amount of adults for each genotype by using the Hardy- Weinberg mathematical equation pa + PC +…

Isopod Behavior Lab Report

While the same animal my not wanting to eat something that is not sugary or sweet like peas. Every organism acts different, especially when a stimulus is affecting them. While other times the organism can do something for no reason, well at least to our knowledge. Relationships also can be a factor on how organisms…

Biology Lab Report on the Effects of Photosynthesis

Energy (TAP), initially in the form of glucose (macroeconomics) is later armed by condensation reaction into starch (polysaccharide). These alpha glucose units are attached together by glycoside bonds. Starch is formed after the Calvin Cycle in the Stoma. Carbon dioxide is present in the air and the water is gained from precipitation or morning dew….

Lab Report of the Experiment of Conjugation of E. Coli

Using alkaline lysine nipper, a DNA lassie was isolated from the donor and transcontinental strains and FIG electrophoresis was used to determine the size of the plasmid. The conjugation efficiency was found to be 16. 25% and the plasmid DNA was approximately 97 kilobytes long. The results show that the F’ plasmid was effectively transferred…

DNA Structure and Function Lab Report

Complementary bases Guanine is the complementary base of cytosine, and adenine is the implementers base of thymine in DNA and of oracular in RNA Double helix A pair of parallel helices intertwined about a common axis, especially that in the structure of the DNA molecule. EXERCISE 1 -DNA structure Which carbon atom (position) in the…

Gel Electrophoresis Lab Report

To examine DNA and RNA, the fragments are placed in the garage wells and an electrical charge is sent through, pushing the negatively chi argued molecules towards the positive side. The smaller the molecule, the less re’s stance it will face when hitting the pores of the gel, and the farther it will travel. Restriction…

DNA Extraction Lab Report

Extraction and purification of DNA are the first steps in the analysis and manipulation of DNA that allow scientists to detect genetic disorders, produce DNA finger rings of individuals, and even create genetically engineered organisms that c an produce beneficial products such insulin, antibiotics, and hormones. DON A can be extracted from many types of…

Serratia Marcescens Lab Report

In bacteria, temperature, pH, and other chemical agents a II affect the expression of genes. In this lab, the effect of temperature change on the gene which codes for a red pigment called prognosis of bacterium Seer TIA mercenaries is being tested. Seriate mercenaries is usually found in OSI I and plants, and the accumulation…

Photosynthesis and Cellular Respiration lab report

This is an investigation of the effect of the intensity of light (photosynthesis) have on the rate of cellular respiration (measured as the number of oxygen bubbles). We will determine whether or not it is possible to examine the relationship between photosynthesis and cellular respiration under controlled environmental conditions. We will show the effects, reactions,…

HISTOLOGY lab report

Cells appear to be squarely, nuclei are in the middle of each cell, basement membrane, connective tissues Simple Columnar (stomach) Tall (like a column), elongated nuclei, there are gastric pits visible, basement membrane, microvolt, connective tissue Simple Columnar (duodenum) Columnar in appearance, microvolt are present as well as Burner’s glands Stratified Exogamous (non-scrutinized) Appear to…

Yeast Population Lab Report

The biotic factor being tested here is what effect the temperature of he yeast’s environment has on its ability or inability to reproduce efficiently. The lab tests the yeast in three separate temperature settings: a cold temperature (ICC), room temperature (ICC), and a hot temperature (ICC). Here, the independent variable is the temperature of the…

Cell Membrane Lab Report

Time (min) Total Diameter (mm) Distance of Diffusion * (mm) Rate (mm/min) * 15 30 45 Potassium Permanganate 5 Celsius Methyl Blue 5 Celsius Total Diameter (mm) Distance diffused = diameter of each reading minus initial diameter Rate – distance in mm/elapsed time (min) Double click the chart below. A spreadsheet will open. Enter the…

Enzymes Lab Report

The size, the smell, the color? Most of us WOUld have to say that if they grabbed an apple that had a bruised body, they would return that apple to the pile in search for that perfect skinned apple. This is why studying catechist oxides is so important! Let’s take a look at population numbers…

Cell Answers

1. Confirm your understanding of cell specialization by listing six systems in the human body and naming at least one specialized cell found in each system. Nervous system – neurons Digestive system – exocrine cells Respiratory – epithelial cells Musclular – liver cells Reproductive – sperm cells Circulartory – red blood cells 2. Use the…

Lab report toothpickase

As time went on and towards the end of the two minutes the rate started to stay the same. The trend between the Control and the Trail 2- Enzyme Mutation (Tied Fingers) graph is that Trail 2 produced fewer reactions, averaging at 1 toothpick per 10 second, in the same amount of time. This is…

Peppered Moth Lab Report

Explain how natural selection relates to “survival of the fittest” concept Natural Selection is when organisms with better adaptations live longer and reproduce in greater numbers and the concept of “survival of the fittest” is the idea that production is the most important thing and the ultimate goal is to survive long enough to reproduce…

Circadian Rhythm

Circadian Rhythm As Wikipedia defined it, circadian rhythm is a 24-hour cycle which is involved in physiological processes of living beings such as plants, animals, fungi and cyanobacteria. Circadian literally means about a day; the words originated from the the latin terms “circa” (around) and “dies” (day).  From Howard Hughes Lecture (HHL) 0 in circadian…

The Circulatory System

General Functions             The circulatory system is the body’s main transport network and cooling system (De Graff, 1998). The human body needs many external substances to survive. We need air, food, and water. However, these substances are not readily absorbed by the body through initial intake. For example, food that is eaten and digested is…

Chapter 4 checkpoint questions

Checkpoint Questions 1. Define histology: Histology is the study of tissues 2. List the four basic types of tissues in the body: a. Epithelial tissue b. Connective tissue c. Muscle tissue d. Neural tissue 3. List five important characteristics of epithelial tissue: a. The cells are bound closely together b. A free surface exposed to…

Anatomy and Physiology Lab Report

This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information…

Joints and Body Movements

Purpose: What is the purpose of this exercise? In this exercise I will exam how joints function and thereby discover how they allow for movement in the body. Joints are where two bones come together. The joints hold the bones together and allow for movement of the skeleton. All of the bones, except the hyoid…

Zoology Lab Report

Materials and Methods: Experiment #1: Before we did anything we punched fifteen discs out of the filter paper. Once we had our discs we then got our catalane, potato juice. We put it into small containers with lids with labels on them that read 100%, 80%, 60%, 40%, 20% and 0%. Each container contained water…

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