Lab Report: Ecology Concepts
Lab Report: Animal Tissues
Lab Report: Ecology Concepts Lab Report: Animal Tissues
3 BioLab3 Population Ecology Lab Report Name, date, course and section required for password: The lab report is unique each semester and checks have been put into place to ensure students are doing their own work. Copying from other students or from outside sources will result in a zero on the accompanying lab quiz. Introduction Compare the average consumption of an American to someone who lives in Mexico. Population Growth Go to the lab, Section I, Exercise 1 and formulate a hypothesis for the investigation related to natural population growth. What do you predict will happen to the number of yeast cells as they multiply over a period of time? Enter the number of yeast cells shown in the online lab for each time interval in the table below. Total the columns and divide by 5 to determine the average number of yeast cells for the samples. Reminder: all average counts after 15 hours must be multiplied by 10 to account for the dilution factor. Age of Culture Hours Population Density Total Average Population Density 1 2 3 4 5 0 3 6 9 12 15 18 21 24 27 30 Population density data Construct a line graph of the average yeast population density at 3-hour intervals. Sign, date and prepare an image of your graph and include it with this lab report. When are the yeast cells multiplying most rapidly? How much time is needed for the population to double? In Lab, Section I, Exercise 2 you will complete an activity pertaining to theoretical population growth. Fill in the table below by doubling each population to find each population size. Use the formula Y = 2 x-1 where Y is the population size and X is the generation. For example, 20 = 1. Generation Population Size Generation Population Size 20 = 1 10 Construct a line graph of theoretical population growth by plotting generation on the X-axis and population size on the Y-axis. Sign, date and prepare an image of your graph and include it with this lab report. How does the shape of the actual population growth curve compare to the theoretical growth curve? Population Dynamics Differentiate between population growth and theoretical growth. Based on Lab, Section II, Exercise 3, if dad and mom (first generation) have two children (second generation), how many descendants will be in the following eight generations if each child has the same number of children as their parents (22)? Complete the table, then construct a line graph. Sign, date and prepare an image of your drawing and include it with this lab report. Generation Descendants 1 2 10 A second family includes dad, mom, and four children. How many descendants will be in the following eight generations if each child in each generation has 4 children? Calculate the family size for each generation, then construct another line graph. Sign, date, and prepare an image of your graph and include it with this lab report. Generation Population Size 1 4 Carrying Capacity What is carrying capacity? Describe three factors that could influence the carrying capacity of a song bird population. IV. Technology and the Ecosystem Based on Lab, Section IV, Exercise 5, describe how environmental zones of the area contributed to ecological stability. If you had been the mayor of this village, what would you have done? Summary Questions What is the difference between theoretical and actual population growth? What factors stabilize population size? How does a dilution make cell counting easier and more accurate? Suggest ways to limit human population growth. Suggest ways to increase the carrying capacity of the yeast cultures. Suggest ways to reduce growth rate of the yeast cultures. Explain why the human population has increased dramatically.
Lab Report: Ecology Concepts Lab Report: Animal Tissues
BioLab3 Animal Tissues Lab Report Name, date, course and section required for password: The lab report is unique each semester and checks have been put into place to ensure students are doing their own work. Copying from other students or from outside sources will result in a zero on the accompanying lab quiz. Epithelial Tissue Define the following terms: microvilli stratified tissues Describe the four functions of epithelial tissue. Based on Lab, Section 1, Exercise 2, examine the cross section of kidney. Identify and list the structures indicated. Based on images in Lab, Section 1, Exercise 3, where is simple columnar epithelial tissue located? Based on the image in Lab, Section 1, Exercise 5, why are cheek swabs used for DNA analysis? Draw and label 4 types of epithelial cells, including both simple and stratified varieties. Sign, date and prepare an image of your drawing and include it with your lab report. Connective Tissue Distinguish between hyaline cartilage and elastic cartilage. The common term for adipose tissue is Define the following terms: chondrocytes central canals lamellae lacunae canaliculi Based on Lab, Section II, Exercise 6, which of the labeled structures imparts elasticity to the tissue? Based on Lab, Section II, Exercise 8, which of the tissues supports most epithelial tissue and many organs? Based on Lab, Section II, Exercise 9, which letter indicates an area of adipose tissue? Based on Lab, Section II, Exercise 10, examine the image of hyaline cartilage and identify the labeled structures. Based on Lab, Section II, Exercise 11, observe the model of compact bone and identify the labeled structures. Based on Lab, Section II, Exercise 11, why is blood considered connective tissue? Muscle Tissue Give the location, function, and appearance of the following muscle types: skeletal smooth cardiac Distinguish between actin and myosin filaments. Based on Lab, Section III, Exercise 14, identify and label the three types of muscle. Nervous Tissue What is the function of neuroglia? Draw a neuron and include the following labels: cell body, dendrites, axon. Use an arrow to indicate the direction the impulse travels. Sign, date and prepare an image of your drawing and include it with this lab report. Based on Lab, Section IV, Exercise 15, where in the human body are cell bodies found? Skin List six functions of skin. Which layer(s) of skin is/are keratinized? Based on Lab, Section V, Exercise 16, examine the model of the skin and identify the labeled layers. Summary Questions Complete the following table: Tissue Type Epithelial Appearance Function Location Simple squamous Simple cuboidal Simple columnar Stratified squamous Provide the term or name the tissue that matches the following: Groups of cells that have the same structure and function. Give an example of an organ. Give an example of an organ system. Name two fibers found in connective tissue that allow for flexibility, support, and elasticity. Give an example of dense connective tissue. Type of connective tissue that has a jellylike and flexible matrix; found at the ends of bones, in the ear, and in the nose. Type of involuntary muscle made up of elongated, spindle-shaped cells; found around many internal organs. The category of tissue that has a matrix and fibers. Type of tissue that lines the mouth. Name the two main layers of skin and their major characteristics, including the tissues found in each layer. © 2022 Access Learning Systems SP23 5