Cell nucleus chromosome gene nucleotide base subunit atom
Your answer would be the second one B
The following tests can determine the mineral in a rock specimen:
1. How does the rock crumble or split under pressure?
2. What is the texture of the rock?
3. Observing it under a magnifying lens.
4. Determine the color of the rock
Test 1 and 3 determines if the rock is granular and the types of grains in the rock. Test 3 also determines if the rock has layers hence sedimentary rock.
Determining whether color of the rock is dark or light also helps identify the mineral and type of rock.
The organelle that provides evidence for this theory is the mitochondria and the chloroplast.
<h3>What is the endosymbiotic theory?</h3>
The endosymbiotic theory is the theory which describes how the eukaryotic cells arose from simple prokaryotic cells.
In the endosymbiotic theory states that when two prokaryotic cells with several abilities came together, one engulfed the other and existed in a symbiotic relationship that enabled the cells to meet their needs for survival an growth.
The mitochondria and the chloroplast provides evidence for the endosymbiotic theory.
In conclusion the endosymbiotic theory describes how eukaryotic cells arose from simple prokaryotic cells.
Learn more about endosymbiotic theory at: brainly.com/question/1698852
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The proteins are called Histone proteins. Chromosomal DNA is packaged such that the strands of DNA are wound around histone proteins and fold into complex ways to form chromosomes. The histone proteins are positively charged proteins that strongly adhere to negatively charged DNA and form complexes called nucleosomes. Each nucleosome is composed of double-helical DNA wrapped.
