an ineffective method of controlling swarming locusts. (2 marks) (iii) Explain TWO methods that could be used in controlling insect pests. (4 marks) Total 20 marks 2. (a) (i) Describe mitosis and explain why this process is important in living organisms. (6 marks) (ii) Identify TWO parts of a plant where mitosis takes place. (2 marks) (b) Explain to a farmer TWO advantages of having a field of cloned sugarcane. 4 marks) (c) (i) In the process of cloning in an animal‚ the nucleus from the
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Canine Fetal development In the majority of female dogs parturition occurs between 64-66 days‚ after the ovulatory surge. Using the date of mating as a reference point as observed in cases of just a single mating or insemination‚ birth can occur as early as 56 days later and as late as 68 days later. Part of the explanation is that dog sperm in some cases‚ survive in the dogs tract for up to 7 or 9 days and still remain viable in terms f being able to achieve fertilization and result in pregnancy
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Name: Anna Tran Date: August 7‚ 2015 Student Exploration: Building DNA Vocabulary: double helix‚ DNA‚ enzyme‚ mutation‚ nitrogenous base‚ nucleoside‚ nucleotide‚ replication Gizmo Warm-up The Building DNA Gizmo™ allows you to construct a DNA molecule and go through the process of DNA replication. Examine the components that make up a DNA molecule. 1. What are the two DNA components shown in the Gizmo? Nucleosides and phosphates 2. A nucleoside has two parts: a pentagonal sugar (deoxyribose)
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DNA Extraction Lab Problem Statement: Do you think you have ever eaten DNA? Background Information: DNA is too small to see under a regular microscope‚ so how can it be studied? DNA is a large molecule found in all living things; therefore it is possible to extract it from cells or tissues. All we need to do is disrupt the cell’s plasma membrane and nuclear envelope‚ make the DNA clump together and - voila! - DNA extraction is possible. DNA extractions from onion‚ bananas‚ liver‚ or wheat
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Meghan Veach Bio. 101 Dr. Davis April 28‚ 2014 Chapter 18 - Evolution of Plants and Fungi Plants have been around for over 500 million years‚ the plants all differ so much but they also have many similarities among themselves and also to green algae. Some scholars even think that plants paved the way for land animals by simultaneously increasing the amount of oxygen in the Earth ’s atmosphere and decreasing the amount of carbon dioxide. Evolutionist believe that plants evolved from green
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6: Human Homeostasis Unit 7: Hormones and the Endocrine System Unit 8: Drugs and Bad Body Maintenance Unit 9: Photosynthesis in Green Plants Unit 10: Water Transport in Plants Unit 11: Flow of Energy and Elements through the Environment Unit 12: Mitosis and Meiosis Unit 13: Inheritance and Selection Unit 14: Evolution and Human Impact Unit 15: Genetic Engineering Unit 16: The Periodic Table and its Elements Unit 17: The Alkali Metals Unit 18: Metals and their Properties Unit 19: The Transitional
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BIOLOGY 101 COURSE SYLLABUS FOR FALL 2012 Course Description Biology 101 is the first of a two-semester introductory course sequence designed primarily for science majors. It covers some central concepts in biology. Topics include molecules‚ cells‚ enzymes‚ photosynthesis‚ cellular respiration‚ cellular reproduction‚ genetics‚ and biotechnology. The laboratory includes basic laboratory skills such as safety‚ microscope use‚ and measurement‚ and it reinforces topics discussed in lecture
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2010 – 2 – 1. N10/4/BIOLO/HPM/ENG/TZ0/XX [Question and image removed for copyright reasons] 2. What is the sequence of stages during the cell cycle? A. B. C. D. G1 mitosis G1 G1 S G1 G2 G2 G2 G2 S mitosis cytokinesis S cytokinesis mitosis cytokinesis S mitosis cytokinesis 8810-6001 – 3 – 3. N10/4/BIOLO/HPM/ENG/TZ0/XX The levels of iron in liver tissue from 12 rats fed on beef and 11 rats fed on plant
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Before Life As We know it Introduction Individuals tend to question how life came about and how we ended up as the Homo sapiens that we are male or female respectively. Little do they know there are several processes‚ which take place before we eventually become the person we are. “It appears to be reasonably established that the functional gametes of many organisms are derived from primordial germ cells already present in early embryogenesis”(Clement 3). Before gametogenesis‚ the primordial
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Introduction To differentiate between bacteria‚ fungi and yeast‚ we plant four different microbes in plates under the same environment for one week and compare the growth of the four microbes by macroscopic and microscopic observation. Meanwhile‚ the diversity of bacteria and fungi in humans‚ the environment and wood could be observed. In addition‚ the four substrates are cultured in two media‚ MEA and NA‚ under the same condition. Thus‚ how nutrients affect the growth of bacteria and fungi could
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