Sorry, but I didn't read the directions for the section 4 discussion board. I already answered them before completing the notes.

How is the earthworm beneficial to the formation of soil?

dedylja [7]

By their activity in the soul

5 0

3 years ago

Fossils of Thrinaxodon, a species that lived during the Triassic period, have been found in both South Africa and Antarctica. Th

tekilochka [14]

Answer:

Option-

As many believe after doing an extensive form of research work of years that reptiles are the ancestors of the mammals that we see now. Which means that we mammals evolved from the pre-historic form of reptiles.

Explanation:

Fossils of Thrinaxodon, a species that lived during the Triassic period, have been found in both South Africa and Antarctica. Thrinaxodon had a reptile-like skeleton and laid eggs, but small depressions on the front of its skull suggest it had whiskers and, therefore, fur. Thrinaxodon may have been warm-blooded. The fossils of Thrinaxodon are consistent with the hypothesis that mammals evolved from the pre-historic reptiles.

7 0

3 years ago

Aspergillus is a hydrophilic mold. true or false

skelet666 [1.2K]

False is the answer let me know if I’m Right!!!

5 0

3 years ago

Read 2 more answers

In which ways can the individual steps of this process be regulated to lead to higher or lower expression of a particular protei

Dahasolnce [82]

Answer:

There are many points at which eukaryotic gene expression can be controlled, through pretranscriptional control, transcriptional control, and posttranscriptional control

Explanation:

The pretranscriptional control determines the accessibility of chromatin to the transcription machinery. It is affected by supercoiling and methylation. It is also known as epigenetic regulation, and it does not depend on the sequence but on the conformation of the DNA.

While transcriptional control determines the frequency and / or speed of transcription initiation through the accessibility of the start sites, the availability of transcription factors and the effectiveness of promoters.

The post-transcriptional control is the one that is exercised once the transcript has finished synthesizing. It can be of several types:

• Maturation control: As the RNA adjustment can be made.

• Transport control: Most RNA has to go out to the cytoplasm to perform its function. For this they have to cross the pores of the nuclear membrane, where you can select the RNAs that will be transported and those that will not.

• Stability control: The half-life of RNA can be regulated by the expression of RNAs or mRNA stabilizing proteins in the cytoplasm.

• Translational control: It is exercised on the frequency with which the mRNAs begin to be translated. It can also affect the frequency with which proteins mature and the availability of enzymatic effectors.

6 0

3 years ago

1. If a cell has a large surface area to volume ratio, it _______

Stells [14]

1. Exchange materials with its environment efficently

3 0

3 years ago