Trace fossil because a trace fossil is a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
Neurotransmitters is the word you're looking for.
Answer:
Pentose sugar
Explanation:
phosphate and pentose sugar are the backbone of a dna strand
Mouth, pharynx, esophagus
Answer:
Becomes completely enclosed by the region of the cell membrane into which the spikes and matrix protein are embedded
Explanation:
The viral capsid is a <em>protein shell that sorrounds a virus</em>, it serves as a criterion for the classification of viruses and <em>it encloses the genetic material of the virus and it has glycoproteins (spikes and matrix) embedded in it.</em>
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