Chapter 28 Question 1 1 out of 1 points A pregnancy test involves antibodies that detect GH levels in a woman’s blood or urine. Selected Answer: False Answers: True False Question 2 1 out of 1 points Sperm move to the uterine tube through uterine contractions and the energy of their own flagella. What other factor is involved in sperm movement? Selected Answer: reverse peristalsis of the uterus and uterine tubes
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Cycles in Biology Cycles in biology play a fundamental role in the world that we live in. Cycles occur all around and inside of us in many different forms‚ from the Krebs to the Calvin cycle. There are large scale cycles happening and they are essential in regulating the nutrients and substances that are around us which without‚ life on earth could no function. One of the largest cycles that occurs all around us is in everyday life is the carbon cycle. The current atmospheric
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Identification of Metallic Ions TITLE: LAB 5.1 IDENTIFICATION OF METALLIC IONS PURPOSE: In this lab we are learning how to observe and perform “flame tests”‚ of alkali and alkaline earth metal ions. We will use basic lab equipment provided in our Labpaq‚ and follow all safety precautions in this lab. From reading the discussion and review‚ we understand that the normal configuration of the electrons is called “the ground state”. We understand that they are in stable condition‚ while at their lowest
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fertilization‚ this cell copied itself to make two cells. This was your first experience of mitosis. Soon after‚ these two cells copied themselves to make four and so on. You have been subject to mitosis ever since (billions of times). By copying the original 46 chromosomes‚ your body has created more than a hundred billion kilometers of DNA - that ’s enough to stretch around the Earth 2‚500 times. Mitosis has copied a total of about 100 ZB of data. As a rough estimate‚ this is equivalent to making
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1) Homeostasis is the condition in which the body maintains a. changing state‚ within an unlimited range. b. an equilibrium point that can change over a narrow range that is compatible with maintaining life c. an equilibrium change that balances external and internal environment such that values of each are equated 2) Anabolism is the a. breakdown of matter. b. expulsion of matter. c. synthesis of matter. d. All of the answers are correct. 3) The sum
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Biomolecules - Organic compounds is first due to the fact that every word on the list is an organic compound‚ as they are essential to life processes. Next‚ carbohydrates‚ lipids‚ proteins‚ and nucleic acids are all macromolecules‚ as they are very large molecules composed of thousands of atoms or more. The map then divides into the four biomolecules. Carbohydrates are composed of monosaccharides‚ disaccharides‚ and polysaccharides. Proteins are made of amino acids‚ which are themselves made of polypeptides
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{phosphocreatine/creatine phosphate} regenerating when ADP levels drop Article related Give one reason why it is expected that long-lived animals are likely to develop cancer‚ as opposed to shorter-lived animals. [Paragraph 21] (1) - Idea of more cell division/mitosis occurring leading to a higher accumulation of mutations that could lead to cancer Researchers are looking at "the similarities and differences of how varied but closely related species deal with cancer." [Paragraph 18] *Explain how one species
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electron microscope so the image is not clear‚ however they can view living organisms. These types of microscopes are used in schools to view simple cellular structures‚ which is good to teach simple biology Mitosis and meiosis can be seen with light microscopes. the different stages of mitosis; when the spindle fibers are formed in Prophase‚ the chromosomes lining up along the middle of the cell in Metaphase‚ the chromatids separating and moving to opposite sides of the cell in Anaphase and finally
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not very motile. As the sperm make their journey through the tightly coiled epididymis‚ they mature and become motile. In relation to the diagram of spermatogenesis‚ each human Spermatogonium (germ stem cell) gives rise to many Spermatogonia by mitosis. So the number of chromosomes in each Spermatogonium cell is conserved at 46 chromosomes. Each Spermatogonium will then grow and develop into a Spermatocyte I which will duplicate its DNA so that each of its 46 chromosomes will have two chromatids
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1st Long Examination I. Multiple Choice. Choose the best answer. Write the letter of your choice on your answer sheet. D 1. DNA is unique among molecules in that it can a. form multipolymer complex c. withstand very high temperatures b. come apart and re-form d. replicate itself B.2. Which of the following cellular organelles breaks down complex macromolecules‚ such as polysaccharides and proteins? a. Golgi complex b. lysosome c. rough ER d. mitochondrion A.3. The most abundant
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