2.2 Movement in and out Cells 1 Define diffusion Diffusion is the net movement of molecules from a region of higher concentration to a region of lower concentration down a concentration gradient‚ as a result of their random movement 2 Describe the importance of diffusion of gases and solutes and of water as a solvent. Gases Necessary for gas exchange in all living organisms Necessary for obtaining Carbon Dioxide and releasing oxygen during photosynthesis. Solutes (liquids) Dissolved salts
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the lid of the petri dish and count the number of seedlings that are green versus those that are yellow. Results noted on 3/10/2013. Data Table 1: Punnet square Father (CC) X Mother (cc) Father Gametes C C Mother c Cc Cc c Cc Cc observations
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multi cellular once fertilized by the sperm and begin dividing. However‚ in other organisms‚ such as protists‚ they can start off as multi cellular as well. The ova is the female gamete produced by the female reproductive system and joins together with the sperm‚ the male gamete‚ during fertilization to form the embryo. Gametes are haploids which is the only type of cell that contains only one set of chromosomes. Ova are produced by many living organisms‚ such as animals‚ protists‚ fungi‚ and flowering
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9.7 - Genetics: The Code Broken? (Option)1. The structure of a gene provides the code for a polypeptide:•Describe the processes involved in the transfer of information from DNA through RNA to the production of a sequence of amino acids in a polypeptide:-The structures involved in polypeptide synthesis are:DNA: A gene contains a sequence of bases to code for a protein. Every set of 3 bases is called a codon. RNA: RNA is similar to DNA except that instead of deoxyribose as the sugar‚ it has ribose
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reproduction. How do they differ in comparing genetic traits between parent and offspring? At what points are mitosis and meiosis involved? Asexual Reproduction - The generation of offspring from a single parent that occurs without the fusion of gametes (by budding‚ division of a single cell‚ or division of the entire organism into two or more parts). In most cases‚ the offspring are genetically identical to the parent. Sexual
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Review Questions 3. Animals benefit from the relationship with plants because they are able to get rewards such as pollen and nectar. With these they have the ability to continue on with their daily work. Applying Your Knowledge 1. The rise in prominence of one major group does not necessarily result in the total replacement of a previously dominant group because one group may work better in the part than the other group. Gymnosperms for example produce excess amount of pollen‚ they are
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Q1.Some genetic disorders are caused by alleles inherited from the parents. (a) What are alleles? ........................................................................................................................ ........................................................................................................................ (1) (b) Describe how embryos can be screened for the alleles that cause genetic disorders. ..........................................................
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Unit 3 Growth & Heredity Exam Review & Study Guide WHAT SHOULD I KNOW ABOUT… DNA STRUCTURE‚ DNA REPLICATION‚ Tx‚ Tl‚ MUTATIONS‚ CELL CYCLE‚ MITOSIS‚ MEIOSIS‚ MENDELIAN GENETICS Review/Use the following: Vocab lists‚ ISN Pages‚ Practice Questions‚ Lectures‚ Book Chapters 12‚ 9‚ 10 DNA STRUCTURE 1. What role did Rosalyn Franklin play in our understanding of DNA’s structure? She discovered the double-helix position of the DNA. 2. What role did James Watson & Francis Crick play in our understanding
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half‚ permitting the sexual reproduction process to prevail. Because meiosis produces cells that eventually becomes reproductive cells‚ this division in chromosome number is critical to the cell cycle. Without this process‚ the combination of two gametes during fertilization would result in an offspring with double the number of chromosomes it should have! This could lead to the death of the cell or maybe create a life threatening disorder with the offspring. This is how meiosis preserves the right
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the eye? B. gametes have only one allele of each gene‚ The two alleles of each gene separate 1.Punnett Square used to show how alleles of parents are split between their gametes and how new combinations can occur in an offspring. 2. A monohybrid cross is one that the parents have different alleles and only shows results for one trait. 3. Steps to create a Punnett grid: children letter to show the alleles determine the parents genotypes: all the possibilities determine the gametes that the
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