Bio 101 Exam 1 With Answers

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• [FREE] Bio 101 Exam 1 With Answers

  Centrasome c. Golgi apparatus d. Enzymes Enzymes are catalysts, chemicals that speed up chemical reactions. The conditions inside most cells do not allow reactions to proceed quickly enough to support life. For example, temperatures inside organisms...

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• [DOWNLOAD] Bio 101 Exam 1 With Answers | HOT!

  Which of the following are NOT organelles found in animal cells? Nucleus and golgi apparatus b. Cellular membrane and cytoplasm c. Mitochondria and ribosomes d. Chloroplast and central vacuole Chloroplasts and central vacuole are important...

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• CLEP Biology Exam Answer Key

  Genes are found on chromosomes. Double c. Quadruple d. The DNA molecule looks like a twisted ladder and is referred to as a double helix. Each nucleotide contains a sugar molecule and a phosphate group, along with a nitrogen base. Genes are located within the cytoplasm of the cell. Hydrochloric acid c. Ribonucleic acid d. In the ribosome, the information coded onto messenger RNA is used to make proteins. When sexual reproduction occurs in multicellular organisms, a process takes place before cells fuse whereby a cell is left with half of its chromosomes, enabling the creation of a cell with a characteristic chromosome number. What is this process called? Osmosis c. Anabolism d. Differentiation During meiosis, gametes sex cells are formed by reducing the number of chromosomes found in somatic body cells by one half.

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• Bio 101 Lab Exam 1

  This occurs so that when two gametes, one from each parent, fuse together, the embryo will contain the correct number of chromosomes. Without meiosis, offspring cells would contain double the number of chromosomes of normal adults and they would not be viable. Which of the following represents the largest group of biological classification? Kingdom c.

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• Bio 101 Test 2

  Class d. Genus Biology uses a system of classification to group organisms together based on their characteristics. The levels of classification, from largest most inclusive to smallest most specific , include domain, kingdom, phylum, class, order, family, genus, species. There are two types of cells, eukaryotic and prokaryotic. Which of the following cellular structures are found in both types of cell? Prokaryotic cells are found in bacteria and their structure is much more simple than eukaryotic cells. Prokaryotic cells have a few simple cellular structures such as a nucleoid region, ribosomes, and a plasma membrane. Eukaryotic cells have more highly developed cellular structures including organelles that support the function of the cell.

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• Chapter 1-3 Test

  Internal complexity c. Size d. Ecological relationships Unicellular organisms are very small compared to most multicellular organisms. If they were as large as a multicellular organism, their surface area to volume ratio would be too low to support life. Staying small gives unicellular organisms a high surface area to volume ratio. Larger cells have less surface area compared to their volume. Molecules move into the cell, out of the cell and through the cell slowly through the cell membrane. Having a large surface area provides more space for molecules to diffuse across the cell membrane and less of a distance to travel inside the cell to supply organelles with materials needed for metabolism. How many chromosomes does an individual human person have?

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• BIOL 101/L Placement Test

  Log in or Sign up to track your course progress, gain access to final exams, and get a free certificate of completion! This course is designed for students who want to learn about and appreciate basic biological topics while studying the smallest units of biology: molecules and cells. Molecular and cellular biology is a dynamic discipline. There are thousands of opportunities within the medical, pharmaceutical, agricultural, and industrial fields. In addition to preparing you for a diversity of career paths, understanding molecular and cell biology will help you make sound decisions that can benefit your diet and health. First, read the course syllabus.

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• Learn Biology 111

  Then, enroll in the course by clicking "Enroll me in this course". Click Unit 1 to read its introduction and learning outcomes. You will then see the learning materials and instructions on how to use them. Unit 1: Introduction to Biology Biology is the study of life. While biologists have made great strides in discovering things on earth, there are still many new things to learn. The first fundamental questions are: What is Life? What does it mean to have life? These inquiries are essential to the new discoveries that biologists realize and make known every day. With such a vast scope of information, biologists must organize these discoveries that will stand the test of time. In this unit we introduce the major topics a biologist studies and the theories they use and apply to their work. Completing this unit should take you approximately 4 hours.

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• Bio 102 Exam 1

  Unit 2: Basic Chemistry Nature is not based on one field of study. It incorporates biology, physics, chemistry, and other academic disciplines. Life is multidisciplinary and is driven by chemical processes. Since so many biology topics overlap with basic principles of chemistry, you need a basic understanding and appreciation of chemistry to fully understand biology. For example, in Unit 1 we discussed that the atom is the first part of the biological hierarchy. In this unit we provide an understanding of this foundational level of organization. Completing this unit should take you approximately 5 hours. Unit 3: Biological Molecules Biological molecules are the essential molecules needed for life. These molecules can be organic or inorganic. Organic chemistry is the study of carbon, which is an element that forms strong covalent bonds essential for the foundational structures of all living things. Water, salts, acid and bases are mostly essential inorganic molecules that facilitate many biological processes.

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• Introduction To Biology Questions And Answers

  All organisms contain the organic biological molecules — carbohydrates, proteins, lipids, and nucleic acid — which are essential to life. This unit will help you understand the structures and functions of these organic molecules and how our body needs them to function properly. Unit 4: Cells and Cell Membranes Cells are the smallest units of life. In this unit we explore the characteristics, components, and functions of cells. Learning about the structures of cells, allows us to see the similarities and differences among organisms. Bacteria, plant, animal, and fungus cells are similar in many ways and contain many of the same small structures known as organelles. However, some characteristics help distinguish whether a cell belongs to an animal, plant, fungus, or bacteria. For example, all plant cells contain cell walls, while animal cells lack this particular extracellular structure.

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• Biology 101

  The water within a cell that presses against the cell wall gives a plant its rigidity and your celery its crunch! Completing this unit should take you approximately 10 hours. Unit 5: Metabolism, Enzymes ,and Cellular Respiration Metabolism refers to the sum total of every chemical reaction in every organism. Cells use enzymes and metabolic pathways to conduct these chemical reactions. It is essential to understand the reactions that comprise metabolism to learn how organisms acquire and use energy to survive. Since this process is quite complicated, we will explore it from several different angles in this unit. Completing this unit should take you approximately 9 hours. Unit 6: Photosynthesis Have you ever wondered how a plant grows from a tiny acorn into a giant oak tree?

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• Learn Biology 101

  Where does all that biomass come from? How does it get the energy to grow? Photosynthesis is the fascinating process plants use to convert light energy to chemical energy. Because plants are at the bottom of the food pyramid in almost all ecological systems, understanding how they grow and develop will give you a greater understanding of your environment. Unit 7: Cellular Reproduction: Mitosis Organisms require their cells to divide for the purposes of reproduction, growth, development, or repair. Cellular division is divided into two phases: mitosis and cytokinesis.

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• Biology Exam I: A Quiz On Cells And The Important Macromolecules

  Mitosis involves the division of the nuclear chromosomes, while cytokinesis is the division of the cytoplasmic components into new daughter cells. Serious consequences, such as cancer, can occur if this cell cycle is disrupted in some way. Completing this unit should take you approximately 6 hours. Unit 8: Cellular Reproduction: Meiosis Meiosis is a specialized type of cellular reproduction that only occurs in the ovaries and testes and results in an egg or sperm, respectively. Sexual reproduction is responsible for the amazing amount of diversity within a species. When sperm fertilizes an egg, the resulting offspring contain genes from the father and the mother.

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• FindTestAnswers.com

  In essence, you contain, at least in a small part, genes from ALL of your ancestors. Unit 9: Mendelian Genetics and Chromosomes Do you ever wonder why you look like your brother or sister, or where you got your freckles from? Are you concerned about developing a disease another family member struggles with? These are the types of questions that can be answered with an understanding of genetics. In this unit we learn about the basic principles of inheritance and how likely it is to pass on certain traits from one generation to another.

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• BIOL 101 - Exam 1 Study Guide

  However, extremely slight differences often account for the differences between species. What makes a dog different from a toadstool? What accounts for the differences within species? What makes you different from your neighbor? This unit will give you a greater understanding of the genetic code and its impact on your life. Study Guide This study guide will help you get ready for the final exam. It discusses the key topics in each unit, walks through the learning outcomes, and lists important vocabulary. It is not meant to replace the course materials! We appreciate your feedback, whether you completed the whole course or even just a few resources. Your feedback will help us make our courses better, and we use your feedback each time we make updates to our courses. If you come across any urgent problems, email contact saylor. Your grade for the exam will be calculated as soon as you complete it. If you do not pass the exam on your first try, you can take it again as many times as you want, with a 7-day waiting period between each attempt.

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• CLEP Biology Practice Test

  Once you pass this final exam, you will be awarded a free Course Completion Certificate. Your grade for this exam will be calculated as soon as you complete it. If you do not pass the exam on your first try, you can take it again a maximum of 3 times, with a day waiting period between each attempt. Once you pass this final exam, you will be awarded a Credit-Recommended Course Completion Certificate and an official transcript.

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• QuizMoz - Biology Test

  Part II, Matching: Questions 37 - Most of these answers can be found at the Major Divisions Of Life. Be sure to read the questions carefully to see if I am asking for a kingdom, division, phylum, class, or a general term applied to a specific group. For example, the division Eubacteriophyta includes the "true bacteria" or "eubacteria. Some answers refer to categories at the Major Divisions Of Life that include one or more divisions. This is particularly true of the kingdom Plantae. For example, nonvascular plants include the division Bryophyta, while vascular plants include the remaining nine divisions in this kingdom. Thallophytes include the Kingdoms Monera, Protista and Fungi. They have a body called a thallus and typically produce zygotes that do not develop into multicellular embryos within female sex organs.

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• Biology Questions And Answers Form 1 - Biology Quizzes, Trivia, Answer

  Embryophytes include the kingdom Plantae in which the zygotes develop into multicellular embryos within female sex organs called archegonia or within embryo sacs of flowering plants. Throughout these pages there are numerous links to other pages. Click on these links to see images and more information about specific divisions or classes. This enormous division also includes very unusual and specialized parasitic flowering plants such as the broomrapes and mycotrophic flowering plants that obtain nutrients from the roots of nearby forest trees via mycorrhizal soil fungi. Note: When answering these questions, use the classification system adopted by Wayne's Word see the above classification outlines. Do not use classification schemes used in other books or web sites on the Internet. This is not to say that only one system is correct, but in order to grade these questions objectively, it is necessary to follow one system.

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• Biology Questions And Answers Form 1 - Biology Form One Notes

  Part IV, Matching: Questions 97 - Part V, Matching: Questions - The term phylum is essentially the same as division, but botanists use the tern division while zoologists use the term phylum. Be sure to read the questions carefully to see if I am asking for a kingdom, phylum, class, or a general term applied to a specific group. A flexible, rod-shaped structure that supports the vertical axis of chordate and vertebrate embryos; in vertebrates, this structure develops into the spinal column.

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• Free Biology Flashcards About BIO Exam 1

  Go The major phyla of animals and do a search Contol-F for phylum Chordata. You can also search for "vertebrate. Fertilization and embryonic development occur internally, but the female does not contribute nutrients to the developing embryo. Go to the explanation of reproductive patterns on the major phyla of animals page. Choose between oviparous, viviparous or ovoviviparous. Also refer to the table showing the site of embryo development in animals. Example of an animal in which the males develop parthenogenetically from unfertilized eggs. Go to the explanation of sex determination in animals. Also refer to the table showing four methods of sex determination in animals. Example of an animal in which the female has one unmatched pair of chromosomes, while the male has all matched pairs of chromosomes. Body cavity in higher metazoans multicellular animals between the body wall and intestine, lined with a mesodermal epithelium.

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• Bio 101 Chapter 1 Quiz

  Go to the explanation of coelomate animals. Also refer to the cross sectional view of an earthworm. The outer layer of the embryo of a multicellular animal metazoan. Go to the explanation of metazoan embryos. Also refer to the cross sectional view of an earthworm , a small metazoan. Embryonic stage of development consisting of a hollow, fluid-filled sphere bounded by a single layer of cells surrounding a central cavity. Go to the explanation of gastrulation. Also refer to the simplified illustration of gastrulation. The invagination of a hollow, fluid filled embryo into a mouth and an anus. Fertilization and embryonic development occur internally, and the mother contributes nutrients to the developing embryo and fetus. Class of mammal in which the tiny emryos crawl out of the mother's uterus and into a pouch on her abdomen that bears teats. Go to the explanation of reproductive Patterns on the major phyla of animals page.

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• Find Test Answers | Find Questions And Answers To Test Problems

  I hate to make all of this too easy, but I also hate to see students getting frustrated and confused with all this high memory load information. Try going to the Major Divisions Of Life. Example 1: Lets say you are trying to find the division of algae characterized by cells with a conspicuous transverse groove. Just type in the word "transverse" and you should go immediately to the division Pyrrophyta dinoflagellates. I don't have any photos or illustrations of this division on Wayne's Word, but you can easily do an Internet search and find a lot of additional information and images.

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• Biology Exam I: A Quiz On Cells And The Important Macromolecules - ProProfs Quiz

  Try using an Internet search engine on the Wayne's Word home page, such as Simplify. Example 2: Suppose you are trying to find the fungal division that includes the sexually transmitted anther smut of flowering plants. You might want to look at my link to Anther Smut and read about this debilitating disease of flowering plants. This works very well, especially if you are lucky enough to have a fast wide band cable or DSL connection.

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• Everything You NEED TO KNOW To Do Well In BioL 101

  For some questions you might have better luck going to the above pull down menu or tables. You can often eliminate a lot of divisions by just looking at the outline of major phyla or outline of divisions.

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• BIOL 101 Quiz 2 Answers Liberty University | Complete Answers

  This is not the same case as your language placement exam. AP crdit. Same thing goes for the chemistry and the math placement tests. Not mandatory. First year students students starting the fall semester of the current year may take the placement exam and if they pass will receive BE By Exam credit. Non- first year students and transfer students may take the placement exam and if they pass will earn PL Placement , credit which shows up as zero credit hours on their transcript. There is no separate placement test for lab only. You are NOT eligible to take the exam if you have completed and received a grade for Biology , if you have transfer credit for BIOL , or if you have previously taken the placement exam. If you decide to not come to the exam, after you have registered, no need to cancel.

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• Biology 101-09 Practice Questions

  Diffusion From kinetic theory, matter is made up of particles that are in continuous random motion. In solids, the particles are at fixed positions and can only vibrate at these fixed positions. In liquids and gases, the particles are loosely held and are free to move from one region to another randomly. This movement of gas or liquid particles is observed to be from regions of high concentration to a region of low concentration. The process by which particles move from a region of high concentration to a region of low concentration is known as diffusion. Diffusion occurs until the regions have an even concentration of the liquid or gas particles. Procedure a Hold the glass tubing vertically in a beaker so that one end of the tubing rests on the bottom of the beaker. Expected observations After some time, the purple colour of the potassium manganate VII spread throughout the water and eventually all the water turned purple.

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• QUIZ -- Biology And Science

  The potassium manganate VII particles break away from the crystals, dissolve in water and then diffuse through the water until they are evenly distributed. The Role of Diffusion in Living Organisms a In Plants Diffusion plays an important role in plants in that: It helps in absorption of mineral salts from the soil to the plant. Most salts dissolve in soil water. For those salts whose concentration in soil water is higher that their concentration in the cell sap of root hair cells, they move into the root hair cells through diffusion. Plants require mineral salts for numerous life processes. Diffusion plays a role in gaseous exchange in plants. The respiratory gases oxygen and carbon IV oxide diffuse across the stomata and lenticels of plants.

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• Biol - Exam 1 Study Guide - Biology (BIOL) - Stuvia

  Diffusion also contributes to the transportation of manufactured food materials from the leaves to other parts of the plant. End products of digestion such as amino acids and glucose diffuse across the wall of the ileum into the blood for transport to other parts of the animal body. Diffusion also plays a significant role in gaseous exchange in animals.

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• Bio Final Exam Answers

  In animals, gaseous exchange occurs at certain structures known as respiratory surfaces. These include the skin, gills, lungs, tracheal system and the cell membrane in unicellular organisms. Gaseous exchange at these surfaces occurs through the process of diffusion. Diffusion is important in excretion of nitrogenous wastes especially in unicellular animals. Factors affecting the rate of Diffusion a Diffusion gradient A greater diffusion gradient between two points increases the rate of diffusion. Increasing the concentration of diffusing molecules also increases diffusion gradient with corresponding regions hence increases the rate of diffusion.

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