Biology 30: Module 2: Lesson 4

11. Define the following: Genetic drift: unpredictable fluctuations in allele frequencies, reduces genetic variation over time through such losses of alleles

Preparing specimen for electron microscope hard, light microscope still very useful as a window on living cells.

Biology 102 introduces students to the concept of evolution, the principles of evolution, natural selection, and major kingdoms of living things organisms. My major is nursing and taking this course is a prerequisite and is required for my major. Taking Biology courses will help me be better knowledgeable in my chosen field. I took biology 101 last semester and we learned about cell and organisms. These are fundamentals things that someone who plans to have a career in the healthcare field needs to know. Also these courses are prerequisites for other science courses I have to take such as microbiology, human anatomy and physiology. As a future nurse these are information that will come in handy everyday. I have three years left in my undergraduate study and more

1. The anatomical region found between the lungs that extends from the sternum to the

3. State the name and structure of the functional group for each type of biologically

1) The layer of the GI tract wall that is responsible for motility is the

7)a) You would do the Benedict’s reagent test for simple sugars and the Lugol’s solution or Iodine test for polysaccharides and starch. To test the lipids you would use the Sudan iV test and Biurets reagent test for protein.

pituitary is not creating as much TSH. This would cause the Thyroid to stop producing T4

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.

* Palindromic: cut at the same base sequence on each strand, but in the opposite direction

In eukaryotes, stored primarily in the cell nucleus. A nucleic acid using deoxyribose rather than ribose.

An individual that plays only part of its role because of competition or other types of species interactions is said to display a realized niche. Species over time divide the resources they commonly use by specializing in different ways.

TSH not only stimulates the thyroid gland to churn out more hormones. If in excess, can cause overwhelming cell growth and division to result in goiter.

The thyroid gland is the gland that makes and stores hormones that help regulate the heart rate, blood pressure, body temperature, and metabolism. Thyroid hormones are essential for the function of every cell in the body. They help regulate growth and the rate of chemical reactions in the body. Thyroid hormones also help children grow and develop. The thyroid gland is located in the lower part of the neck, below the Adam's apple, wrapped around the trachea. It has the shape of a butterfly with two lobes attached to one another by a middle part called the isthmus. The thyroid uses iodine, a mineral found in some foods and in iodized salt, to make its hormones. The two most important thyroid hormones are thyroxine (T4) and triiodothyronine

The thyroid gland is found in the front of the neck and produces two main hormones. The hormones are called thuroxine (T4) and Triiodothyronine (T3). Together these hormones regulate the body’s metabolism by increasing energy use in cells, regulate growth and development, help to maintain body temperature and aid in oxygen consumption. These two hormones are regulated by hormones produced by the hypothalamus and pituitary gland. The hypothalamus senses changes in body’s metabolic rate and releases a hormone known as thyropin-releasing hormone (TRH). This hormone then flows through connecting vessels to the pituitary gland which signals it to release another hormone. This hormone is known as thyroid-stimulating hormone (TSH). TSH then makes