Answer:
7.112× 10⁸.
Explanation:
The length of DNA is 2.5 nm = 2.5 × 10⁻⁹m.
The average human length = 5 ft 10 in = 70 inch.
1 inch = 0.0254 m.
70 inch = 70 × 0.0254 = 1.778 m.
Number of DNA molecules = length of man / length of DNA.
Number of DNA molecules = 1.778 m / 2.5 × 10⁻⁹m.
Number of DNA molecules = 7.112× 10⁸.
Thus, the answer is 7.112× 10⁸.
By focusing on the base and the ball...?
Cell Wall
Explanation:
About 63% of the bacteria tested were Gram-negative, which means that they have a cell wall that is more resistant to certain classes of antibiotics than the cell walls of Gram-positive bacteria.
Answer:
They contain symbiotic rhizobia bacteria within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants; this helps to fertilize the soil
Prokaryotic cells have various shapes; the four basic shapes of bacteria are: Cocci – spherical. Bacilli – rod-shaped. Spirochaete – spiral-shaped.