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NNADVOKAT [17]
3 years ago
6

There are various hypotheses as to the origin of prokaryotic and eukaryotic cells. Because all cells are similar in nature, it i

s thought that all cells came from a common ancestor cell called the last universal common ancestor or LUCA. The LUCAs evolved into three different cell types, each representing a domain in the modern system of classification. The three domains are the Archaea, the Bacteria, and the Eukarya. We know that all three domains are cellular in nature, but they have one other feature in common. And this second common feature helped provide the biochemical evidence to support this newest step in classification. Cite the evidence utilized in this classification scheme.
Biology
2 answers:
Paha777 [63]3 years ago
7 0

Answer:

D

Explanation:

Organisms can be classified into one of three domains based on differences in the sequences of nucleotides in the cell's ribosomal RNAs.

RSB [31]3 years ago
4 0

Answer: D

Explanation: took the usatestprep quiz

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a sample of human cells is suspended in a nutrient solution overnight. The next dasy, the scientist observes that the cells have
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The question is incomplete as it misses the options which are:

Cancer cells do not exhibit density dependent inhibition

Cancer cells do not require growth factors

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Answer:

The correct answer will be option- Cancer cells do not exhibit anchorage dependence

Explanation:

A cell becomes tumour forming cell or cancerous cell when the cell undergoes some mutation in the DNA which causes uncontrolled cell division without differentiation.

As a result of the mutation, these cancerous cells show various properties which are present in the normal cells nut absent in cancerous cells like the cancerous cells lack the anchorage dependence.

Anchorage dependence is the property of the cells or the group of cells in which the cells maintain their adherence to the other layer of cells to communicate with each other.

Thus, the cancerous cells lack the anchorage dependence

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3 years ago
Which statement best describes ecological succession?
vekshin1
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Answer:

its the level of acid in substances

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Explanation:

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Karen knows that trees use energy from the sun to make food. she wants to plant several trees in her backyard, but she is worrie
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