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Dvinal [7]
3 years ago
6

What is an underlying problem affecting the freshwater

Biology
1 answer:
Nastasia [14]3 years ago
3 0

our water pipes, and the led in some water sources.

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A scientist finds an unusual object and decides to study it.. . . . Which observation indicates that it is a living thing that i
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The observation that indicates that it is a living thing that is multicellular because it has membrane-bound organelles. The correct answer is option B. Multicellular organisms' cells are macroscopic which are naked to the visible eye. These organisms are eukaryotic so this means that their cells contain membrane-bound structures.
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3 years ago
Thinking creatively about evolutionary mechanisms, identify at least two schemes that could generate allelic polymorphism in a p
Ede4ka [16]

Complete question:

Thinking creatively about evolutionary mechanisms, identify at least

two schemes that could generate allelic polymorphism in a population except natural selection that favors heterozygotes.

<u>Select the two correct answers.</u>

-inbreeding among individuals in the population

-purifying selection against mutational variants of alleles in the population

-continuous migration of individuals with new alleles into the population

-mutations that do not severely affect viability and reproductivity

-genetic drift of alleles common in the population

-events leading to genetic bottleneck effect

Answer:

The two events that might favor heterozygotes among the options are  

  • The Continuous migration of individuals with new alleles into the population
  • Mutations that do not severely affect viability and reproductivity.  These might favor heterozygous frequencies.

Explanation:

Due to technical problems, you will find the complete explanation in the attached files.

Download pdf
3 0
2 years ago
Ethylene is an organic compound produced by ripening fruits. In a controlled experiment, researchers found that ethylene gas sti
luda_lava [24]

Answer:

<h2>Ethylene is a gaseous hormone in plants, it is a fruit ripening hormone.</h2>

Explanation:

Ethylene is a chemical signal through which ripening fruits trigger the ripening process in fruits, Studies on components of ethylene signaling have shown a linear transduction pathway leading to the activation of ethylene response factors. However, the whole pathway by which ethylene selects the ripening-related genes and interacts with other signaling pathways to regulate the ripening process still not yet fully known. Most fruits produce ethylene that starts the ripening process. Its level in under-ripe fruit is very low, but as fruit develop, the production of ethylene become larger that speed up the ripening process of fruit.

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3 years ago
Fermentation converts organic material into a fuel whose primary component is
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Answer:

D. alcohol

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Fermentation by microorganisms converts organic materials into alcohol

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When a neuron is at its resting potential?
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There are more potassium ions inside the neuron than outside.

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