Entries by Daphne Hanson

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Estrogen affects many parts of the body besides the uterine lining.  It is also important in secondary sex characteristics.  In addition, it increases the sense of smell and taste. a. Based on your graph, during which part of the menstrual cycle would these senses be most intense?  How would this be an adaptation to increase […]

Hypotheses concerning the evolution of arthropods

Insect evolution is evolving! There are two general hypotheses concerning the evolution of arthropods: the older Articulata Hypothesis and the more recent Ecdysozoa Hypothesis. Briefly, describe the morphological and molecular data that support each hypothesis. Okay, time to choose: which hypothesis is more credible, then explain why you made this choice by providing evidence to […]

Which of the following human activities disrupt the phosphorus cycle and have negative effects on an ecosystem?

Which of the following human activities disrupt the phosphorus cycle and have negative effects on an ecosystem? A. Soaps and laundry detergent enter the water supply. B. Farmers use crop rotation to maintain nutrients at high levels in the soil. C. Fossil fuels are extracted from deep in the ground, releasing nutrients stored in bedrock. […]

The Polymerase Chain Reaction

The Polymerase Chain Reaction (PCR) is needed before we do Gel Electrophoresis of DNA. PCR allows us to quickly amplify/copy a single segment of DNA a billion times. Then that DNA can be run on a gel. We will watch this video and answer the following questions https://youtu.be/mdB-Edy6scE What can the DNA Thermal Cycler do? What […]

 What factors play a part in the glomerular filtration rate?

What factors play a part in the glomerular filtration rate? What is the main factor that determines the rate of glomerular filtration? How is the glomerular filtration rate regulated? The glomerular capillaries are fenestrated, diameter of the efferent arteriole is smaller than the diameter of the afferent arteriole, the visceral layer of the glomerular capsule […]

How did the Linnaean system of classification improve Aristotle’s system?

The system of classification developed in ancient Greece by Aristotle was used in Europe up until the early 1700s. How did the Linnaean system of classification improve Aristotle’s system? A. The Linnaean system added more levels to the hierarchy of complexity that Aristotle developed. B. B. The Linnaean system used genetic information to determine which […]