Answer:
b) Reptiles, birds, and some mammals produce amniote eggs.
Explanation:
All the mammals produce amniotic eggs. An amniotic egg is an egg that has four extraembryonic membranes including amnion. Amnion is a fluid-filled sac that serves as a cushion and does not allow the egg to desiccate. Since mammals are land animals, they have amniotic eggs to prevent any damage to the embryo from desiccation and physical injury.
Rotational symmetry is radial symmetry which means that the shape is the same after several rotations. In five-fold rotational symmetry<span> the number of distinct orientations in which the object looks the same is five. </span>
Living organisms whose shapes have five-fold rotational symmetry are sea stars (starfish) and sea urchin. They <span>can be mapped onto itself through rotation about a central point by an angle of 2π/5. </span>
The definition of transformation in bacteria is described by the first statement: transformation is the assimilation of external dna into the bacterial cell. In a more elaborate sense, transformation is described by the altering of the cell as a result of the uptake or intentional incorporation of dna from an external source. It is one of the three processes for horizontal gene transfer. The other two are transduction (infection of a phage), and conjugation (transfer of dna between two bacterial cells that are directly in contact).
<span>B) The two types of tetramers associate to form an octamer. </span>
Answer:
The answer is FALSE.
Explanation:
The pink color that the nail bed presents is due to the significant number of blood vessels, specifically capillaries, coursing under the skin. This usually indicates a healthy nail bed. Any discoloration away from the pink color would usually indicate an underlying disease.
For example, if it turns <u>yellowish</u>, it may be an indication of <em>jaundice</em> or <em>liver disease</em>. If it's <u>bluish to whitish</u> in color, <em>hypothermia or anoxia</em> may be present. A distinct condition called <u>Onychomycosis</u>, a <em>fungal infection</em> of the nail, may produce whitish to yellowish discoloration with accompanying thickening of the nail bed.
