I believe the answer is Volcanic glass
Answer:
D. archaeal membranes contain L-glycerol.
Explanation:
Archaea and eubacteria differ from each other with respect to the nature of membrane lipids. Lipids present in the membranes of the archaeans have the hydrocarbons derived from isoprene units. These hydrocarbons are branched and are attached to the glycerol with help of ether linkage. Ester linkages are present in eubacteria. The glycerol present in the archaeans is L- glycerol. Bacterial membranes have D-glycerol present in their lipids.
Many gene sequences that are involved in gene regulation contain a conserved sequence this means that, the conserved sequence that have same gene sequence can be present in the variety of organism they can be same or different species.
The conserved sequence means a base sequence in the DNA that cannot be changed throughout evolution. This means that the large protein structure, amino acids, sequence region were identified.
The conserved sequence of the DNA does not code protein, these are non-coding region of the DNA sequence. These conserved sequence required for the basic cellular stability, function and reproduction.
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Answer:
Prostate gland is a main organ of reproductive system in male. Its main function is to secretes liquid substances in order to maintain health of sperm.
Explanation:
Prostate gland is present between two main organs of reproductive system i. e. bladder and penis. Its size is small equal to the size of walnut. The main function of prostate gland is to secretes prostate liquid. This liquid is the main part of semen.