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Alinara [238K]
3 years ago
5

Which two structures are not found in animal cells

Biology
2 answers:
nexus9112 [7]3 years ago
8 0
The cell wall and chlorophyll are absent in animal cells. These are unique to plant cells.
garik1379 [7]3 years ago
6 0
The cell wall and chlorophyll. Instead of a cell wall, an animal cell contains a cell membrane to allow flexibility. Cell walls are in plant cells to keep it firm and strong. Chlorophyll is in plants and produces the green pigment
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3 years ago
Name the three types of population distribution, describe each, and explain the conditions that govern each.
tankabanditka [31]

Answer: Population distributions may be described as <em>random, uniform</em><em> or </em><em>clustered.</em>

Explanation:

In a specified region, a population comprises any  number of members of the same species. Populations are described by sizes- the number of individuals; densities-  individuals in a set space (per unit area); and distribution- the dispersal or non dispersal of individuals (spread out or clumped). Population distributions may be described in three ways:

  • Random: the distribution pattern is haphazard, with no regular spacing; individuals grow independently of each other without competing and resources are consistent. <em>E.g. dandelion seed dispersal by wind </em>

  • Uniform:  individuals are evenly spaced in a predictable pattern; there may be some interaction and ideally, spaces between them  are maximized in order to ensure access to limited nutrients and resources.<em> E.g.  human farming- cornfields, orchards; allelopathy in plants like purple sage, which secretes chemicals to prevent the growth of other plants nearby</em>

  • Clumped: there is less distance between neighboring organisms and these individuals cluster together. This pattern is most common in environments where resources are scarce, or the species is dependent on social interactions.<em> E.g. lions are highly social and hunt in prides in the wild</em>

6 0
3 years ago
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irga5000 [103]

Answer:

Humans an hunt second-order consumers.

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2 years ago
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4. DNA typing was first described in 1985 by English geneticist
irga5000 [103]

Answer:

2. Alec Jeffreys

Explanation:

'DNA fingerprinting' or DNA typing (profiling) as it is now known, was first described in 1985 by an English geneticist named Alec Jeffreys. Dr. Jeffreys found that certain regions of DNA contained DNA sequences that were repeated over and over again next to each other.

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The maximum number of individuals of a population that can be sustained indefinitely
denis-greek [22]

Answer:

Carrying Capacity  

Explanation:

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