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levacccp [35]
3 years ago
15

Black walnut trees produce a nontoxic chemical that becomes highly toxic when it is exposed to air or soil. How does this chemic

al help black walnut trees compete with plants growing nearby?
Biology
1 answer:
SIZIF [17.4K]3 years ago
3 0
I thought of it as that the black walnut trees will thrive better than plants nearby as the toxic chemicals produced by the trees can harm or make it more difficult for other plants to thrive
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Identify the starting and ending materials for transcription and translation
Alexus [3.1K]

Transcription: DNA is converted to mRNA.

Translation: mRNA is converted to protein.

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sveticcg [70]

Answer:

What are the answer choices?

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If there are none, say that prokaryotic cells have a cell wall, large vacole and chloroplast.

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storchak [24]

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3 years ago
Which capillary would be least likely to allow substances to enter or exit the blood due to tight junctions that join the endoth
vodka [1.7K]

Answer:

Those capillaries that have endothelial cells tightly attached have an increase in cell-to-cell junctions, such as desmosomal junctions that are poorly permeable to substances.

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The blood-brain barrier is too selective since it is not favorable for the organism that many fluids, drugs, substances or chemical compounds enter the brain space.

This is the reason why the vessels are waterproof and why pharmacology was challenged to invent drugs that could cross this barrier since it was considered impossible.

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