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olganol [36]
3 years ago
5

Bisphenol-A (BPA) is an endocrine disruptor that can leach out of certain plastics. It disrupts the normal function of the endoc

rine system my mimicking estrogen. Which of the following explains how persistent small amounts of BPA in the body can have effects?
Biology
1 answer:
larisa [96]3 years ago
8 0

Answer:

up-regulation

Explanation:

Upregulation is where a increases the quantity of a cellular component like protein or RNA in response to an external stimulus.By controlling the number of its receptors, cells may increase and decrease their cell sensitivity.... Hormones can also trigger cells to control themselves by upregulation.( Estrogen is the primary sex hormone for females).

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Scientist involved in biotechnology sometimes insert DNA of one organism into a second organism. What is the purpose of this pro
dezoksy [38]

Answer:

1. to increase meiosis.

2. to make more efficient cell organelles.

3. to cause the second organism to produce protein

Explanation:

7 0
3 years ago
Why is transcription essential for making proteins
Kryger [21]

Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein synthesis. In eukaryotic cells, each class of RNA has its own polymerase, whereas in prokaryotic cells, a single RNA polymerase synthesizes the different class of RNA. Other types of RNA also exist but are not as well understood, although they appear to play regulatory roles in gene expression and also be involved in protection against invading viruses.

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3 years ago
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Explain why using wind, solar, and biomass energy can lead to sustainable energy use.
anyanavicka [17]
Because all those energy sources are natural and will always be there, when ever there is a need for extra energy.
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Are organisms within rainforest food chains are interchangeable?
Ugo [173]
Yes.You can change its inside or outside

8 0
3 years ago
Apoptosis involves all but which of the following?
LenaWriter [7]

Answer:

Apoptosis does not involve:

c. lysis of the cell

Explanation:

Apoptosis is a programmed cell death that occurs under normal physiological conditions and in a controlled manner. Normally seen in cell turnover, embryogenesis, also involved in processes of immune, nervous and endocrine systems.

The main morphological and biochemical changes seen during the apoptosis are the fragmentation of DNA by endonucleases, nuclear, chromatin and cytoplasmatic condensation, apoptotic bodies formation (membrane bound-vesicles form of cell parts) and the phagocytosis (digestion) of those bodies by the scavenger cells.

Apoptosis is regulated by cell- signaling pathways, the caspases, a family of cysteine proteases, are the ones involved in the process.

In the process there is no lysis of the cell as this could lead to a inflammatory response (just happens in necrosis) which would affect contiguous cells, and will involve immune cells. In apoptosis there is just a membrane blebbing, but it does not loss its integrity.

4 0
3 years ago
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