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andrew-mc [135]
3 years ago
12

An unconformity is a ______ of rock.

Biology
1 answer:
wlad13 [49]3 years ago
4 0
<span>An unconformity is a break in the geologic record. These unconformities are created in cases when rock layers erode or sedimentation does not occur for a long period of time. </span>
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Which molecule is a first messenger but not a second messenger
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Hormones act as first messenger but not as second messengers.

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Second messenger act as signaling molecule which are secreted in response to various biological signals generated by first messenger such as hormones,neurotransmitters etc.Second messengers include various bioactive molecules such as cyclic AMP(cAMP),cyclic GMP(cGMP),inositol triphosphate(IP3),diacylglycerol(DAG),calcium ions(Ca2+) etc.

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A family business had bred dogs for over 250 years. During this time, 125 generations of dogs were bred for a single trait: prot
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In eukaryotic cells cellular structure is composed of a neatly packaged DNA molecule histone octamer.

In eukaryotes, however, genetic material is housed inside the nucleus and tightly packaged into linear chromosomes. Chromosomes are made of a DNA protein complex called chromatin this is prepared into subunits referred to as nucleosomes. A chromosome is made up of proteins and DNA organized into genes. each cell usually incorporates 23 pairs of chromosomes.

The records in DNA is stored as a code made from four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA includes about bases, and greater than 99 percentage of those bases are the identical in every person.

DNA is tightly packed up to healthy inside the nucleus of each cell. As proven within the animation, a DNA molecule wraps round histone proteins to shape tight loops known as nucleosomes. these nucleosomes coil and stack collectively to shape fibers referred to as chromatin.

Learn more about eukaryotic cells here:- brainly.com/question/495097

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