Flash Cards: How do Organisms Reproduce?
This chapter covers the various methods of reproduction in organisms and explains their significance for species survival and diversity.
How do Organisms Reproduce? - Flash Cards
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What is the purpose of reproduction in organisms?
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Reproduction is essential for the continuation of species; it allows for the creation of new individuals that look similar to the parents.
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What carries genetic information in cells?
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DNA (Deoxyribo Nucleic Acid) carries genetic information and is responsible for inheritance and the production of proteins.
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What process leads to the formation of two cells from one?
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Cell division results in two cells from one by duplicating DNA and separating the copies into new cellular structures.
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What are chromosomes?
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Chromosomes are thread-like structures made of DNA that carry genetic information and are found in the nucleus of cells.
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Why does variation occur during reproduction?
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Variation occurs due to the imperfect nature of DNA copying which can lead to slight differences in genetic material.
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Why is variation important for species?
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Variation enhances survival; it enables species to adapt to changing environments and increases the likelihood of species continuation.
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What are the two main types of reproduction?
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The two main types of reproduction are asexual (one parent, no genetic variation) and sexual (two parents, genetic variation).
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Name an example of asexual reproduction.
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Budding in hydra and binary fission in bacteria are examples of asexual reproduction.
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What is a key component of sexual reproduction?
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In sexual reproduction, gametes (sperm and egg) fuse to form a zygote that develops into a new organism.
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How do we identify if organisms belong to the same species?
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Organisms are considered the same species if they exhibit similar characteristics and can interbreed to produce fertile offspring.
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How is reproduction linked to population stability?
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Reproduction maintains population stability by ensuring a consistent number of individuals within a species.
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What happens to a population if its niche changes?
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If a niche changes drastically, populations may die out, but some individuals with variations may survive and adapt.
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Is DNA copying always accurate?
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No, DNA copying is not absolutely reliable; slight errors can lead to variations in the offspring.
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What accompanies DNA copying during cell division?
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The creation of additional cellular apparatus occurs alongside DNA copying to ensure both new cells can function.
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What role does variation play in evolution?
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Variation is the basis for evolution as it allows for natural selection, enabling species to adapt over time.
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What can happen due to significant DNA copying errors?
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Significant errors can lead to non-viable offspring that cannot survive due to incompatible DNA.
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How can environmental changes affect reproductive success?
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Environmental changes can alter niche conditions, affecting survival rates and reproductive success of the species.
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Does reproduction require energy?
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Yes, reproduction requires a significant amount of energy for processes like gamete production and nurturing offspring.
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What does reproduction fundamentally involve?
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Reproduction fundamentally involves making copies of the blueprints (DNA) that dictate body design.
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What can be a consequence of global warming on organisms?
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Global warming can impact habitats and lead to the death of temperature-sensitive populations, leaving only resilient variations.
