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zhuklara [117]
3 years ago
6

The oldest known fossils Group of answer choices all of the choices. are microscopic. are that of prokaryotes. date back 2.5 bil

lion years ago.
Biology
2 answers:
agasfer [191]3 years ago
8 0

Answer:

Cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old. Cyanobacteria are among the easiest microfossils to recognize

Explanation:

Sauron [17]3 years ago
8 0
What exactly is the question
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Epigenetics refers to a special kind of hereditary mechanism. Epigenetic changes do not change the DNA nucleotide sequence, yet
OlgaM077 [116]

Answer:

Histone acetylation or DNA methylation.

Explanation:

The epigenetics may be defined as the genetic phenomena that might cause mutation in the organism's genome. The DNA sequence of the organisms do not get changed in epigenetics.

This phenomena is limited whether the gene is herited from the mother ot the father. The phenomena like acetylation of histones increase the gene expression. The DNA methylation and histone deacetylation at specific residues reduces the gene expression.

Thus, the answer is histone acetylation or DNA methylation.

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3 years ago
The suprachiasmatic nucleus of the ________ is responsible for regulating your circadian rhythms. In this way it plays a very im
Natalija [7]

Answer:

tiny region of the brain in the hypothalamus, situated directly above the optic chiasm.

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3 years ago
Which of the following statements is true?
Arte-miy333 [17]
D would be the answer tomthis
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An example of active transport
Viktor [21]
Examples of active transport include the uptake of glucose in the intestines in humans and the uptake of mineral ions into root hair cells of plants.
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2 years ago
What is the complete factorization of the polynomial below x^3+2x^2+4x+8
lina2011 [118]

Explanation:

(X3+8)+( 2X2+ 4X)

(X+2)(X2-2X +4) + 2X(X+2)

(X+2)(X2-2X+4+2X)

(X+2)( X2+4)

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