Answer:
A. Somatic cell nuclear transfer was first carried out in frogs in the 1950s
Explanation:
Answer: a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.
a small cavity or space in tissue, especially in nervous tissue as the result of disease.
Origin
mid 19th century: from French, diminutive of Latin vacuus ‘empty’.
Translate vacuoles to
Use over time for: vacuoles
Explanation:
Answer:
Classification system changes with the passage of time because new organisms are discovered which has unique characteristics and not fit to classify in the present kingdoms so for that new kingdoms will be formed for their classification. At first, there are only two kingdom systems but after the discovery of fungi and protists etc, the scientist introduced five kingdom system.
I believe the correct answer among the choices presented above is option C. In the oxygen revolution, C<span>yanobacteria were the first organisms to produce oxygen in water, which then escaped into the atmosphere. They were said to be the first microbes to produce oxygen.</span>