Answer:
d. blood moves from the heart into arteries and into smaller vessels and then back into larger vessels as it makes its way back to the heart.
Explanation:
A closed circulatory system is a system in which blood is separated from the interstitial fluid as it circulates in the blood vessels. In a closed circulatory system blood circulates in one direction that is from the heart and then then returns to the heart again after circulating around one of two routes of circulation. A closed circulatory system can be observed in vertebrates, annelids, mollusks.
Answer:
The correct answer is: C) Membrane lipids diffuse within the plane of the membrane.
Explanation:
Membranes are mostly made from phospholipids that, in aqueous environments, are arranged forming two layers (the hydrophilic heads are in contact to both the intercellular and extracellular spaces, and the hydrophobic tails make contact to one another in amidst the layers). These lipids that make up the bilayer diffuse laterally within the plane of the membrane and thus constitute the <em>fluid mosaic model</em> of cell membranes.
No it does not, carbon can be in many forms and locations.
This is false. All ions possess an electrical charge as this is what defines an ion. An atom that lost and or gained electrons and thus possess a charge because of it.
<span>Very very unlikely.
Since the recessive allele is on the X chromosome, in order for a woman to have this condition, both copies of her X chromosome has to have the recessive allele. One copy of the allele would have to come from her mother, and the second copy from her father. The copy from her mother is a 50/50 chance if her mother was heterozygous with one copy of the recessive allele and one copy of a normal allele and therefore didn't exhibit the dystrophy and therefore didn't know she was a carrier. But the father only has 1 copy of the allele and therefore would exhibit the dystrophy and as such would be unlikely to have engaged in procreative sex that would pass on the defective allele to his offspring. This is especially true since duchenne muscular dystrophy will typically start to manifest itself in male children around starting around age 4.</span>
