N the classification of organisms, which is the correct order of ranks?

1 answer:

6 0

The current taxonomic system now has eight levels in its hierarchy, from lowest to highest, they are: species, genus, family, order, class, phylum, kingdom, domain.

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Explain the term colony as it relates to the bacterial growth on solid media

cricket20 [7]

Answer:

the billions of cells that originate from one parent cell

Explanation:

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Meiosis and mitosis are both preceded by one round of DNA replication; however, meiosis includes two nuclear divisions. The four daughter cells resulting from meiosisare haploid and genetically distinct. The daughter cells resulting from mitosis are diploid and identical to the parent cell.

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A spider plant sends out runners that have buds. When planted, the bud grows into a mature plant. The resulting plant has one pa

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A spider plant sends out runners that have buds. When planted, the bud grows into a mature plant. The resulting plant has one parent and is genetically identical to the parent.

Answer: Option C

Explanation:

Reproduction is of two types one is sexual reproduction and asexual reproduction. The asexual reproduction mostly involves only one parent and therefore the off spring that is born is genetically identical with the parent.

whereas in sexual reproduction that involves 2 parents the off spring born contains a genetic makeup that is a combination of 2 parents and thereby not genetically identical.

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Which of these is an agent of abrasion?

patriot [66]

Answer:

A. Rock pieces

Explanation:

Abrasion is the breaking down and wearing away of rock material by the mechanical action of other rocks. Three agents of physical weathering that can cause abrasion are moving water, wind and gravity. None of those are agents of abrasion. But Rock pieces are a result of abrasion.

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A scientist notices that when she adds a small, water-soluble molecule to a dish of cells, the cells turn off transcription of a

Lelechka [254]

Answer:

Enzyme-linked

Explanation:

The cell surface receptors that have intracellular domains associated with enzymes are called enzyme-linked receptors. The added molecule was water-soluble and cannot pass through the membrane to bind to intracellular receptors. Binding of the added molecule to the enzyme-linked receptor led to the activation of associated enzymes to generate the response (down-regulation of expression of the target gene).

Examples of enzyme-linked receptors include tyrosine kinase receptors. Binding of the signaling molecule to these receptors triggers phosphorylation of the intracellular domain which in turn transmits the signal to the cytoplasmic messenger.

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