Biological Science Lesson 1 Zoology - branch of biology that deals with the life of animals. 1. Morphology - studies forms and structure of animals. a. Gross anatomy - performs surgical technique ; dissection (cutting up). b. Paleontology - studies pre-historic forms of animals through fossil. 2. Histology - study of tissues & organs‚ their structure‚ functions & composition at a microscopic level. 3. Cytology - study of the structure & function and its parts at microsopic level or
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Lab manual/results/online article condensed notes Lab 1 · DNA is made up of deoxyribonucelotides · Components of DNA/RNA includes a 5 carbon sugar‚ a phosphate group‚ and a nitrogenous base · the negative charge associated with DNA/RNA is due to the phosphate groups · DNA is linked together by phosphodiester bonds (they are covalent bonds) · the energy required to create these bonds is from the cleavage of pyrophosphate‚ refer to figure 1.3 on page 4 and below. ·
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1.1 Studying the Structure of Cells In 1665‚ English scientist Robert Hooke became the first person to study cells Cell Structure Nucleolus: Makes Ribosomes‚ which help to make proteins Nuclear Membrane: Protects the contents of the nucleus Nuclear Pores: Allow materials‚ such as ribosomes‚ in and out of the nucleus |Light Microscope |Electron Microscope | |Uses light source |Beams of electrons
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Name ______________________________________ Virtual Lab Report: Part I Due by: 11:59 PM PST on the second Saturday of class Virtual Lab 1: Virtual Microscopy A. Estimate the size (length and width) of these microscopic objects in micrometers (microns): 1. An E. Coli cell. 3 x 0.6 um =1.8 um 2 A mitochondrion. 4 x 0.8 um = 3.2 um 3. A Red blood cell. 8 um 4. A virus. _Hepatitis 45 nm = .045 um 5. A water molecule. 275 pm =.275 um B. 1 Describe three differences between prokaryotic and eukaryotic
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organism Population level: Population – species – community – eco system Reading scientific graphs: Independent variable – your own setting – x axis Dependent variable – measurement‚ Y-axis Centrioles (p. 87) Pull chromosomes during mitosis (animal cells) Assemble microtubules Anchor flagella / cilia 3 Differences between animal cells Position of nucleus Control Tower (p81) Nucleus: Control center‚ directs protein synthesis and cell reproduction Nucleolus: Assembles Ribosomes
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Unit 2 Lecture Study Guide 1) What are the parts of an atom? Where are the subatomic particles found? Parts of an atom- divided into two basic regions: 1. the central nucleus (contains heavy particles) 2. the electron cloud (contains very light‚ moving particles) Subatomic particles: 1.Protons (found in the central nucleus) 2.neutrons (found in the central nucleus) 3.electrons (spin rapidly in a cloud around the central nucleus) 2) How does the Atomic Mass # differ from the Atomic
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discoveries include Dalton’s Law of Partial Pressures‚ Dalton’s modern Atomic Theory‚ the Doppler Effect‚ James Prescott Joule’s and Helmholtz’s Law of Conservation of energy‚ Deiters’ presentation of the image of a nerve cell‚ Flemming’s description of mitosis‚ Darwin’s Theory of Evolution by natural selection‚ Rudolf Virchow’s belief that cells arise from pre-existing cells‚ Mendel’s laws of inheritance‚ Mendeleev’s Periodic Table‚ and the invention of cathode rays. First‚ the two discoveries by John
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synthesis occurs and a copy of the DNA is made in the nucleus. G2 is known as the Second Gap Phase where the cell grows and prepares for cell division. G1‚‚S‚ and G2 phases all make up interphase of cellular division. During the M phase‚ mitosis and cytokinesis occurs. In mitosis‚ 4 stages of cellular division occur: prophase‚ metaphase‚ anaphase‚ and telophase. In cytokinesis‚ the cytoplasm of the cell splits‚ making 2 new cells. The G0 phase is known as the resting state. This is where cells are not actively
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to undergo a mitosis process. This is the way eukaryotes can replicate themselves into two genetically identical cells (Wikipedia‚ Mitosis). Contrastingly‚ prokaryotes do not have a nucleus and a centrosome‚ so they usually reproduce by binary fission. Comparing the speed of these processes‚ prokaryotic cells can reproduce many times faster than a eukaryotic cell. It takes a relatively more time for a eukaryotic cell to prepare for a division (Julita (2011)‚ Difference Between Mitosis and Binary
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Chapter 13: Meiosis and Sexual Life Cycles 1) Genes are the units of heredity‚ and are made up of segments of DNA. 2) In asexual reproduction‚ one parent produces genetically identical offspring my mitosis. In sexual reproduction‚ two parents give rise to offspring that have unique combinations of genes inherited from the two parents. 3) Humans have somatic cells‚ which are any cell other than a gamete‚ have 23 pairs of chromosomes. A karyotype is an ordered display of the paired of chromosomes
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