Answer:
homeostasis
Explanation:
Homeostasis is a biological phenomenon in which living organisms maintain a stable internal environment irrespective of the changes in their external environment. This process is key to every other activities pertaining to the survival of an organism.
Hence, according to this question, HOMEOSTASIS is the internal process organisms undergo in order to ensure that their internal conditions stay the same even though their outside environment may change. For example, humans maintain a stable internal temperature despite cold weathers.
Answer:
Fraternal twins
Explanation:
Hyperovulation is when a mother drops two or more eggs during a single cycle. Each egg acts individually and can be fertilized by a sperm. If egg A is fertilized by a sperm with Y chromosome and egg B is fertilized by a sperm with an X chromosome. Egg A will be a male child, while egg B will be a female child
The correct response is,
the sequences within the promoter region at -10 and -35 are the most important for recognition by the sigma subunit.
Promoter region is the DNA sequence located upstream of the corresponding gene. Promoters for genes are essential as RNA polymerase recognizes the promoter region and binds to it forming the holoenzyme complex which can inititate transcription of the gene located downstream.
Sigma factor is the transcription factor found in bacteria, RNA polymerase has a subunit for the sigma factor, this factor only can recognise the sequences in the promoter region and bind to it thus initiating transcription.
Promoters usually have 2 parts of conserved regions, -10 element and -35 elements. Both these regions have conserved sequences.
The sigma factor is capable of identifying these conserved sequences at these particular locations of the promoter and can bind to these sequences.
once the sigma factor binds to these regions, RNA polymerase too binds and forms a transcription initiation complex and then transcription of the downstream gene is initiated.
Therefore promoters need not have identical sequences for the sigma factor to bind, as long as the -10 and -35 regions have conserved sequences the sigma factor can bind and transcription initiation will be followed.
Answer:
Gas cloud 1: It spreads with a greater volume and less concentration of elements. Its temperature stays well below the 14 million Kelvin. It has hydrogen atoms that retain there electrons.
Gas cloud 2: Its volume shrinks and the density increase die to the gravity
. Its temperature stays above the 14 million kelvin
. Hydrogen atoms shed there electron.
Explanation:
As you already know, stars form within clouds of gas. These clouds have interstellar gases composed mainly of dust and hydrogen. When subjected to low temperatures, gases react and combine to form molecules that create clouds and continue to react until they form stars.
Cloud 1 has characteristics that show that it will form a star which are: It spreads with a greater volume and less concentration of elements, its temperature stays well below the 14 million Kelvin, it has hydrogen atoms that retain there electrons.
as we know that cloud 2 will not form stars we can say that its characteristics are: Its volume shrinks and the density increase die to the gravity
, its temperature stays above the 14 million kelvin
, hydrogen atoms shed there electron.
