Answer:
All organisms are made up of one or more cells.
Answer:
The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes (endosymbiosis) is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.
Explanation:
Both mitochondria and chloroplasts are similar to bacteria in size, and like bacteria, they reproduce by dividing in two.
Answer:
Correct option is C.
Explanation:
Gram staining is a technique of separation of the bacteria based on the cell wall composition. Steps involved in gram staining are:
1) Primary stain application which is known as crystal voilet, it stains all cells purple/blue.
2) Mordant stain application which is known as iodine solution, is added, and form crystal iodine complex, all cells continue to stain blue/purple.
3) Decoloration step, in this step, we can differentiate gram negative or gram positive bacteria. So, decolorizing agent such as ethanol or acetone extracts blue color from thin walled peptidoglycan layer gram negative bacteria, and gram positive bacteria remain blue/purple because it contains thick walled peptidoglycan layer.
4) Counterstain application in this step safranin red dye stain the gram negative decolorized cells red/pink, and gram positive bacteria remain same blue.
So, if a student is performing a Gram stain of a mixed culture of both E. coli and S. aureus, and he forgets to decolorize with ethanol Both the bacteria should appear blue/purple color.
Answer:
Grammar check and idea
Explanation:
”A girl (or woman) with a deal in mind and the loot to act upon it”. She wanted my horse but I could never give up Riptide. She offered to trade hers with mine but i refused, Riptide was too special to me.. to-. before I could finish my thought the girl started wailing like something a nomad like me has never heard before.She screamed of her lost ring in Florida that her late father had given her. However, we were in New York not Florida. I then remembered the path me and Riptide had taken and offered her to ride with me to find it since I needed to go there anyways to deliver medicine.
She enthusiasticly agreed and climbed onto my horse. I then hoiseted myself up once more and rode into the forest, just like i did when i was younger with a mission and a reward in mind…to see the gleaming faces of children again.
revise the whole narrative if you don’t wanna get a plagiarism check.
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Mineral resources are solid, crystalline substances made inside the Earth. These include granite, marble, limestone and precious stones which are used for jewellery. Minerals are used to make all sorts of different things which we use every day.
Energy resources are things we can use to turn into electrical power. These include fossil fuels, nuclear, wind, water and solar power.
