The right option is; D)The DNA in eukaryotic cells is enclosed in the nucleus, while the DNA in prokaryotic cells is not separated from the rest of the cell’s contents.
Eukaryotic cells are cells that contain membrane-bound organelles such as mitochondria, endoplasmic reticulum with a definite nucleus. Examples of eukaryotes are plants, fungi, and insects. Prokaryotic cells are cells that do not have a true nucleus or any membrane-bound organelles. Prokaryotes include bacteria and archaea. In eukaryotic cells, the DNA is enclosed in the nucleus, while in prokaryotic cells, the DNA (a single chromosome) is located in an area of the cell known as nucleoid.
Answer:
The stomach produces hydrochloric acid.It kills many harmful microorganisms that might have been swallowed along with the food.The enzymes work best in acidic conditions-at low pH
Answer:
Earth's climate had remained relatively constant.
Explanation:
- Scientists have established that human-based activities have affected and are affecting a rapid change in the earth's climate as they have brought about massive changes in the global carbon cycles and affected the ecological systems.
- Earth is has an ever-changing climate and the variation in the orbit of earth results in natural changes such as seasons, which depend on the duration and intensity of the sunlight.