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Anettt [7]
3 years ago
14

Among the many remarkable aspects of the origin and history of life on earth is that life originated as much as ____________ yea

rs ago.
Biology
1 answer:
Debora [2.8K]3 years ago
3 0
The oldest fossil evidence that geochemists have been able to find in deposits in Pilbara, Australia, and South Africa have been dated to 3.5 bya. In addition, organic compounds that may be the result of those produced by organisms have been dated, also in Greenland, to 3.8 bya.
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To make new cells, humans undergo a process of cell division called mitosis. Before a cell goes through cell division (mitosis),
sashaice [31]

Before a cell goes through cell division (mitosis), it must grow and make a copy of its DNA which is termed as an Inter-phase.

<u>Explanation:</u>

Some tasks must be carried out by the cells before they undergo division: The cell must grow, it must copy the genetic material (DNA) present in it, and  divide into two daughter cells. These steps carried out by cells are termed as  cell cycle.

Cells that contains a nucleus or Eukaryota cells, there are two major phases called interphase and the mitotic (M) phase. that comprises the cell cycle.

In  inter-phase, growth of the cell and making a copy of its DNA is carried out.

In mitotic (M) phase, the cell separation of the DNA in the cell into two sets and division of its cytoplasm takes place resulting in the formation of two new cells.

5 0
3 years ago
What is an evidence of using a computer over a graphic calculator
Mariulka [41]
Most reasonable answer is because computers hold larger amounts of data.
5 0
3 years ago
Membrane bound space for temporary storage in cell.
lys-0071 [83]
Vacuoles are essentially sacs surrounded by a membrane. They are used by cells as temporary storage sites. They often store food, enzymes, and other materials needed by the cell, and some vacuoles store waste products.
3 0
4 years ago
An adaptation is A.Any trait an organism possesses B.How an organism evolves during its own lifetime C.A gene an organism has D.
Roman55 [17]

Answer: Option D.

A trait that helps an organism survive in its environmen

Explanation:

This is because adaptation is the ability or process in which an organism can adapt , survive and function well in it's environment no matter the environmental conditions.

It refer to the traits or characteristics an organisms posses which make it to survive, reproduce and even transfer the traits to it's generations.

3 0
3 years ago
The lac operon in E. coli controls the gene expression of the enzymes that digest lactose in the cell. In the absence of lactose
erma4kov [3.2K]

Answer:

b, a, d, c, e

Explanation:

The lac operon is called lactose operon is a cluster of genes with a promoter. The bacteria uses lactose as the source of energy by the proteins coded by genes. This is present in prokaryotes.

The regulatory gene codes for repressor protein. The repressor binds to lactose and prevent its binding to operator. In the absence of lactose repressor gets activated and binds with operator. Thus, RNA polymerase is prevented from binding the promotor. The transcription of genes inhibited. Thus correct order is b, a, d, c, e.

5 0
3 years ago
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