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denpristay [2]
3 years ago
12

What event characterized the Paleozoic era?

Biology
2 answers:
german3 years ago
8 0
The growth of plants and formation of land mammals characterized the paleozoic era.
Bogdan [553]3 years ago
5 0

Answer:

The event that characterizes the Paleozoic era is the Cambrian explosion, according to which a large number of biological class prevalent today are primitive of fish and corals that evolved during that era.

Explanation:

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3. What happens to the genes when two chromosomes “embrace”? What is the name of this process?
sdas [7]

Answer:

the processes name is meisois and Genes get exchanged between the parents

Explanation:

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3 years ago
Which is the fifth most common pool where carbon is stored apart from the Earth's crust, ocean, soils, and atmosphere?
AleksandrR [38]
I am not sure what is the answer
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2 years ago
MicroRNA (miRNA) production occurs in several steps. Arrange the statements describing the production and function of miRNAs in
zmey [24]

Answer:

The miRNAs act as post-transcriptional silencers, as they are similar to specific mRNAs and regulate their stability and translation. They are small endogenous non-coding ribonucleic acid (RNA) molecules, with about 22 nucleotides, which act as regulators of gene expression in plants and animals, at the post-transcriptional level through the cleavage of a target messenger RNA (mRNA) or repression of translation.

In general, most miRNA genes are transcribed by RNA polymerase II in the nucleus in primary miRNAs (pri-miRNAs). Individually, a pri-miRNA can produce a single miRNA or contain groups of two or more miRNAs that are processed from a common primary transcript. These long pri-miRNA are cleaved by a complex comprising the double-stranded RNAse III enzyme (DROSHA) and its essential cofactor, the binding protein DGCR8 (DiGeorge Syndrome Critical Region 8 protein) in mammals. DROSHA contains two domains of RNAse III, each of which cleaves a strand of the RNA resulting in the precursor microRNA (pre-miRNA) with about 70 base pairs, which contains a double-stranded stretch and a single-stranded loop, forming a structure in clamp. The pre-miRNA is exported to the cytoplasm by the protein exportin-5 (XPO-5), where it is cleaved by DICER1, an RNAse III that assesses the 3 'and 5' ends of the pre-miRNA, generating a mature miRNA with about 22 nucleotides. The processing of pre-miRNA by Dicer promotes the unfolding of the RNA duplex in the form of a clamp. The position in the formation of the clamp can also influence the choice of tape.

Explanation:

7 0
3 years ago
Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional
elena-14-01-66 [18.8K]

Answer:

Aerobic glycolysis has a slow rate of ATP production and is predominantly utilized during longer-duration, lower-intensity activities after the phosphagen and anaerobic systems have fatigued. It is important to remember that all three of these systems contribute to the energy needs of the body during physical activity

Can I get brainliest so I can reach the next rank?

8 0
3 years ago
Read 2 more answers
What is an abiotic factor that can prevent the organism from becoming preserved
NeX [460]

Answer:

Groundwater.

Explanation:

Groundwater in this case is the primary abiotic factor that inhibits  organism from being preserved after been buried. After being buried, decomposers here becomes the biotic factors that eat up dead bodies.

It is also known that sedimentary basins encounters a certain change in its subsidence rate over time, and eustatic sea level changes continuously, causing depth to variations in groundwater and lakes, ocean temperature, spreading rates, continental collision and cracks, and sedimentation in ocean basins.

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3 years ago
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