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miv72 [106K]
2 years ago
15

Which of the following best describes the mechanism by which steroid hormones control gene expression? View Available Hint(s) Wh

ich of the following best describes the mechanism by which steroid hormones control gene expression? Steroid hormones transport mRNA from the nucleus into the cytoplasm, where it is translated into protein. Chaperone proteins transport steroid hormones into the cell and guide them to their target genes. Steroid hormones that enter the cell activate receptors. These hormone-receptor complexes then bind HREs and influence gene expression. Steroid hormones enter a cell, bind directly to hormone response elements (HREs), and enhance transcription.
Biology
2 answers:
Veseljchak [2.6K]2 years ago
6 0

Answer:

Steroid hormones that enter the cell activate receptors. These hormone-receptor complexes then bind HREs and influence gene expression.

Explanation:

Mechanism of action of steroid hormones is as follows:

  • Steroid hormone enters cell and bind to the receptor.
  • Translocation of activated receptor- ligand complex into nucleus.
  • This complex then bind to another receptor on the chromatin.
  • Steroid receptors form dimers.
  • Act on DNA
  • These hormone-receptor complexes then bind HREs and influence gene expression.
  • Augmentation or Suppression of transcription.
fenix001 [56]2 years ago
6 0

Answer:

The correct answer is "Steroid hormones that enter the cell activate receptors. These hormone-receptor complexes then bind HREs and influence gene expression".

Explanation:

Steroid hormones control gene expression by the interaction with tissue-specific binding sites. The steroid hormones  that enter the cell activate receptors, which are highly specific and have a high affinity with them.  These hormone-receptor complexes then bind to hormone response elements (HREs), which are short sequence of DNA that influence gene expression by producing effects such as chromatin remodelling.

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To my esteemed Biology colleagues: 10/15/19 I am National Park Ranger, Imani. I am writing you as my park is in desperate need o
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Answer:

See explanation below.

Explanation:

1. Explain the difference in the roles of producers, consumers, and decomposers in the Everglades.

In the Everglades, producers would be all <u>species of organisms that are autotrophs such as different species of plants</u>. Consumers are categorized into three: primary, secondary and terciary consumers. <em><u>Primary consumers</u></em><u> feed on plants (e.g. insects), </u><em><u>secondary consumers</u></em><u> eat the primary consumers (e.g. mice or rats), while </u><em><u>tertiary consumers</u></em><u> are higher predators that eat the secondary consumers (e.g. racoons)</u>. Finally, decomposers are bacteria, archaeans, fungi, or worms that live in soil which decompose organic matter.

2. Based on your knowledge of how to classify living organisms, in what domain and kingdom do the producers, consumers, and decomposers belong?

In Biology, the three domains are Archaea, Bacteria, and Eukarya; while there are six kingdoms: Archaebacteria, Eubacteria (true bacteria), Protista, Fungi, Plantae, and Animalia.

  • Producers, that is plants, belong to the Domain Eukarya and the Kingdom Plantae.
  • Primary, secondary, and tertiary consumers also belong to the Domain Eukarya and to the Kingdom Animalia as they are all animals and eukaryotes.
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Once the alligators were removed from the food web, the populations that were once in decline began to recover because of the lack of predators. Consequently, the lack of alligators led to the uncontrollable growth of racoons, wood stork, and gar, which could also cause an alteration as they consume ecologically and economically important fish species such as the bass and bluegill.

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Alligators should not be completely removed because they help to maintain an ecological balance. Instead, Ranger Imani should work on controlling populations by implementing Wildlife Population Management strategies, such as sustainable fishing, to prevent a certain species population from reaching a high number of individuals in order to keep a healthy ecosystem where all populations are stable because removing all apex predators is not the appropriate strategy as it significantly alters the ecosystem.

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