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6 Nov 2018

A biological profil or biological collecting seeks to determine what animals are living at a locality, how many there are, and under what conditions they exist.
True or false

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I have no idea how to begin this, ill incorporate things from our course but some started would be helpful

In this class, weรขย€ย™ve learned that human variation exists. What about race? While there are social and cultural consequences of racial classifications, it is clear there is no real, biological basis for racial categories. However, many people continue to believe there is a biological distinction among people of different ancestry. This view is often promoted by overtly racist groups.

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Describe specifically what you would need to do to decide whether two different individual organisms are members of the same species or not, under the following species concepts:


a.) phenotypic,

Ok, so this one would have to be based on phenotypes correct? say fossil records could show same bone structures like jaws etc. and then birds could be differentiating between beaks, color, and wing size?



b.) "biological"

this one and phylogenetic confuse me. won't you have to look at dna to decide if they're alike? or does biological mean something else?


c.) 'ecological'
This one would just be to check if they can breed with each other right? even though there can be seperation by continents, if they can breed theyre still the same species right?

d.) phylogenetic
this one and biological confusese me. won't you have to look at dna to decide if they're same species or not? or whats the difference from biological and phylogenetic?

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. Enzymes are usually large, complex biological catalysts that are expensive to make. Enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). They are highly specific in the reactions they regulate. Knowing what enzymes are and how they function, WHY does this help explain why complex lifeforms could not exist if there were no enzymes

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