Diatoms are made of silica (hydrated silicon dioxide)
The answer is <span>No, emotions of non-human organisms cannot be tested.
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Answer:
e. bacteria producing vitamin K
Explanation:
Microbial antagonism basically refers as microbes versus microbes i-e the indigenous microflora serve a beneficial role by preventing other microbes from becoming established in or colonizing a particular anatomic location in the body.
As all the options mentioned, refers to the microbial antagonism except option E as the normal microbes protect the host by :
1) Producing acids.
2) Bactreocin production
3) By occupying the niches that the pathogens may occupy.
But the microbes cant compete with other microbes by producing vitamins and growth factors that can be utilized by the host.
Hence option E is the right answer.
The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cellsarise from existing cells. Rudolf Virchow later made important contributions to this theory. ... Thecell is the fundamental unit of structure and function in living things.
Answer:
The correct answer is 50%
Explanation:
Fraternal twins are the twins which are produced from the fertilization of two different eggs by two different sperms. These eggs are released at the same time.
So as fraternal twins are produced from fertilization of two different eggs therefore they share 50% of genes with each other just like other siblings. They are also called dizygotic twins
Identical twins are produce from a sigle fertilized cell which later divides into two cell mass. Indentical twins share 100% gene. Therefore the correct answer is 50%.
