DNA- is the material found in the nucleus that contains the genetic info. 4 billion codes in length Gene- a segment of DNA that controls a certain protein production. A gene is made up of hundreds to thousands of codes. Chromosomes- genetic material that is coiled up into structures during cell division. Importance of DNA- genes control the production of proteins..(look like‚ body function‚ body communications‚ and enzyme control) DNA screening- the process of testing individuals to determine
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Bio 30 Cell Questions Question Sheet McDougal Littell Biology Textbook – Page 70 3.1 Cell Theory 1. Explain the three major principles of cell theory in your own words. 2. What characteristics are shared by most cells? 3. How did improvements in the microscope help scientists form the cell theory? 4. How do prokaryotic and eukaryotic cells differ? 5. Today‚ scientists can study human cell grown in petri dishes. Explain how this technique builds on the work of early
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DEFINITIONS Gametes are mature haploid reproductive cells that unite to form a zygote that develops into a new individual. Gametes are also called sex cells. An egg or ovum is a haploid female reproductive cell or gamete whereas a sperm is a male haploid reproductive cell. A zygote is the initial cell that is formed as a result of the union of a male and a female gamete by means of sexual reproduction. The two haploid cells merge to give rise to a diploid cell which marks the first stage of development.
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Structures and processes involved in the movement of substances into and out of cells. Epithelial cells – Epithelial cells are also referred to as eukaryotic cells. These types of cells have a unique nucleus and contain membrane-bounded organelles. Epithelial cells absorb and secrete‚ and the structures of a cells organelles can be viewed from an electron microscope. The nucleus – the nucleus of a cell contains most of the cell’s genetic material‚ organized as multiple long linear DNA molecules
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Bio Review – Cells Cell Theory 2.1.1 * All living things are made of cells * Smallest unit of life * Existing cells from pre-existing cells * Contain a blueprint for growth‚ development‚ behavior * Site of all chemical rxns 2.1.2 * Abiogenesis * Living from non-living matter * Robert hook * Compound microscope + observed cork “cells” * Anthony van Leeuwenhoek * Observed blood cells and other “living” cells * Louis Pasteur * Proved
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organelles. ”A eukaryotic cell is sectioned by internal membranes into different functioning categories called organelles. For example‚ the nucleus houses DNA‚ the genetic component that controls the cells activities. (Boundless. “Introduction” Boundless Biology). The Cytoplasm is the material between the cell membrane and the nucleus. It has a lot of responsibilities within the cell. It contains enzymes for breaking down waste and also gives the cell its shape. The Nucleus or the brain which it is
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* Question 1 1 out of 1 points | | | Which of the following is NOT a domain of life?Answer | | | | | Selected Answer: | Animalia | Correct Answer: | Animalia | | | | | * Question 2 1 out of 1 points | | | Polar molecules share electrons equally.Answer | | | | | Selected Answer: | False | Correct Answer: | False | | | | | * Question 3 1 out of 1 points | | | Which of the following is NOT a characteristic of life?Answer | | | |
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STAGES OF MITOSIS Name +r-« ~ber the following six diagrams of the stages of mitosis in animal cells in the proper _ .Jr. Label each stage with the proper name. 5 .- Ie-I )0 0 ohCtJ~ I the same for the following diagrams of mitosis in plant cells. 5 - --:r n-k/l ohG(~ i Biology IF8765 29 +-eloph~ ©Instructional Fair‚ Inc. Name: --.t.&=-+~+--------\ ( Cellular Division DIRE C T ION S: Answer the following math problems. Use the space below each problem or a separate piece of paper
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CELL ULTRASTRUCTURE CELL ULTRASTRUCTURE Cells are the smallest functional units of the body‚ (Waugh‚ A. and Grant‚ A.2010). Most cells are microscopic. The largest cell in the body is the female ovum. The erythrocyte is the smallest cell. The longest cell is the neuron. Cells group together to form tissues‚ each of which has specialised function. Different tissues group together to form organs. Organs are group together to form organ systems‚ each of which performs a particular function that
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Chapter 3: Cell Structure Notes The cell is the basic unit of biologic organization of the human body Protoplasm: an aqueous colloidal solution of carbohydrates‚ proteins‚ lipids‚ nucleic acids‚ and inorganic salts surrounded by a limiting cell membrane Cells in our respiratory tract produce mucus to trap dust and microorganisms that get past the hairs in our nose then move the material to our throat to be swallowed and passed out through the digestive system The most prominent structure in the
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