Higher Biology Essays

Dec 20, 2023

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Higher Biology Essays

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Higher Biology

Higher Biology. Hormonal Control of Growth in Plants -part 2. Hormonal Control of Growth 2. By the end of this lesson you should be able to:. Know the name of a 2nd plant growth substance. Know the effects of GA: on cells on stems on dormancy in inducing a -amylase in barley grains

509 views • 14 slides

Higher Biology

Higher Biology. Cellular Defence. Mr G Davidson. Cellular Response. Both animals and plants have mechanisms to defend themselves against disease. Some operate at the level of the whole organism i.e. a tough outer skin or epidermis. Others operate at a cellular level. Viruses.

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Higher Biology

Higher Biology. Adaptation Part 4. Adaptation 4. By the end of this lesson you should be able to:. Know what a xerophyte is. Describe the problems that xerophytes face. Describe how xerophytes are adapted to survive in their environment. Know what a hydrophyte is.

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Higher Biology

Higher Biology. Selection. Mr G R Davidson. Selection. Evolution depends on variation in a population of living things. Variation is called survival of the fittest, a process by which, environmental pressures result in some varieties surviving better than others and is called selection.

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Higher Biology

Higher Biology. Genetic Control of Growth. Genetic Control of Growth. By the end of this lesson you should be able to:. Describe the Jacob-Monod hypothesis of gene action in bacteria. Explain lactose metabolism in Escherichia coli . Describe the role played by genes in the control of

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Higher Biology

Higher Biology. Hormonal Control of Growth in Plants. Hormonal Control of Growth. By the end of this lesson you should be able to:. Know the name of 1 plant growth substance. Know where IAA is produced. Know the effects of IAA or auxins: on cells on shoots and roots on bending of stems

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Higher Biology

Higher Biology. Hormonal Control of Growth in Animals. Hormonal Control of Growth. By the end of this lesson you should be able to:. Know what a hormone is. Know the names of 2 hormones produced by the anterior pituitary gland. Describe the role of thyroxine. Introduction.

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Higher Biology

Higher Biology. Unit 1 Cell Biology: Cell structure in relation to function. In a multicellular (many-celled) organism the cells are organised into tissues. A tissue is a group of similar cells which work together to carry out a specific function.

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Higher Biology

Higher Biology. Regulation of Populations. Regulation of Populations. By the end of this lesson you should be able to:. Explain the term population fluctuations. Understand why populations remain relatively stable in size. Explain what is meant by density-dependent factors.

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Higher Biology

Higher Biology. Growth Patterns. Plant Growth. By the end of this lesson you should be able to:. Describe how growth is measured. Know what a growth curve is. Describe growth patterns in an annual plant. Describe growth patterns in a tree. Describe growth patterns in a human.

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Higher Biology

Higher Biology. Homeostasis in humans- part 1. Human Homeostasis. By the end of this lesson you should be able to:. Know the principle of negative feedback Know how the water concentration of the blood is maintained. Explain the role of ADH in osmoregulation

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Higher Biology

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Higher Biology

Higher Biology. Unit 3 Sustainability and Interdependence. KEY AREA 1:. Learning Intentions. KEY AREA 1 – Food supply, plant growth and productivity Food supply. Food security Photosynthesis. a) Food supply, plant growth and productivity.

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Higher Biology

Higher Biology. Unit 1: Cell biology Unit 2: Genetics & Adaptations Unit 3: Control & Regulation. Higher Biology. Exam Paper Format Marks Section A 30 Multiple Choice 30 Section B Short answer 80 Section C Extended Answers 20 ___

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Higher Biology

Higher Biology. Unit 1 DNA and the Genome. KEY AREA 5: The Structure of the Genome. DNA and the Genome Learning Intentions. KEY AREA 5 – The Structure of the Genome. 5a) The Genome. The genome of an organism is its entire hereditary information encoded in its DNA

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Higher Biology

Higher Biology. Chapter 16 Gene Mutations. Gene Mutations. This type of mutation involves a change in one or more of the nucleotides in a strand of DNA. There are four types of gene mutation: 1. Substitution of a nucleotide. 2. Inversion of two or more nucleotides.

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Higher Biology

Higher Biology. Unit 1 DNA and the Genome. KEY AREA 7: Evolution. DNA and the Genome Learning Intentions. KEY AREA 7 – Evolution Evolution 2. Selection 3. Speciation. 7a) Evolution. Evolution is the process of changes in organisms over generations as a result of genomic variation

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Higher Biology

Higher Biology. Monitoring Populations. Monitoring Populations. By the end of this lesson you should be able to:. Give four reasons for monitoring populations. Introduction. Wild plant and animal populations are regularly monitored to detect any changes in their population numbers.

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Higher Biology

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Higher Biology

Higher Biology. Revision Exercise. Unit 2. Genetics and Adaptation. Meiosis/Crosses/Mutation. 1. _______ reproduction is the means by which _______ variation is maintained in a population. Sexual. genetic. 2. _______ is the process by which haploid ________ are formed. Meiosis. gametes.

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Higher Biology

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