The correct answer is option D, Plasma
Plasma is the condition where a hot gas is ionized. It consists of equal numbers of positive and negative ions. It is an electrically conducting environment which is considered as the fourth state of matter. Plasma gases are affected by electric and magnetic waves as compared to the neutral gases (which remain unaffected by electric and magnetic wave) due to the presence of negative and positive ions.
The B-pleated sheet is held together by hydrogen bonds between adjacent segments.
In an a-helix the side chains are located on the outside of the helix
The secondary level of protein structure refers to the spatial arrangements of short segments of the protein
Biotic and living are the same thing, abiotic would be non-living
My guess:
I do not know the options to the blanks, but I'd say that the answer to the first one is "strongly linked". Think of a chromosome as a phylogenic chart → 2 species that are beside each other are strongly linked, if compared to 2 species 3 spots apart form each other. So, 2 genes that are close to each other are strongly linked.
I do not know the options to the blanks, but I'd say the answer to the second one is epistasis → which is the interaction between two different genes (different means they're not linked alleles).
Hope it helped,
BioTeacher101
Th correct answer would be D! Hope this helps