Answer:
In gram-negative bacteria, the thin layer of peptidoglycan is surrounded by an outer membrane made of phospholipids, lipopolysaccharides, and proteins. This statement accurately describes specific bacterial cell walls.
Explanation:
The Gram- negative bacteria constitute of an outer membrane which is richly made up of lipopolysaccharides, phopholipids and proteins. The lipopolysaccharides function mainly as a virulence factor and are involved in causing variety of diseases in animals.
Gram- negative bacteria can be seperated from gram- positive bacteria mainly because of the thickness of peptidoglycan and by the presence of the outer membrane of Gram- negative bacteria. The outer membrane is absent in Gram- positive bacteria.
<span>Opaca and Marginal zone stays outer and does not move during chick gastrulation,
The zone opaca is a thick fringe ring comprising of more than one cell, it is joined to the germ wall. The Marginal zone lies at the fringe between the range opaca and the region pellucida</span>
The answer is D. Old stone tools with be more classified as an ancient artifact where the others would be classified as fossils.
Based on our understanding, we can confirm that the structures that comprise the outer ear include the tragus, helix, and the lobule.
<h3>What is the outer ear?</h3>
Contrary to that of the inner ear, the outer ear includes the parts of this organ that do not actually influence our ability to hear. These parts include the components of the ear that we are able to see on an everyday basis, separated into three distinct parts named the tragus, helix, and lobule.
Therefore, we can confirm that the structures that comprise the outer ear include the tragus, helix, and the lobule.
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Answer:
B, measuring the rate of squirrel births in a woodland habitat.
Explanation:
Biology is the study of life so anything that's considered living would be around this field.
