Hello! :) I'm going to explain active transport (and also passive transport) in simple terms.
The concentration gradient is the movement of molecules from an area of high concentration to an area of low concentration of the molecule.
Passive transport happens when the molecules go down the concentration gradient, but what would happen if a cell needed to move molecules against the concentration gradient?
The process of moving molecule(s) against the concentration gradient is active transport. Active transport requires energy, however.
There are multiple types of active transport, such as endocytosis and exocytosis. Endocytosis moves molecules against the gradient into cells, while exocytosis move molecules outside the cell. There are two types of endocytosis: pinocytosis (liquids) and phagocytosis (solids.)
Hope this helps!
Answer:
Galactosemia is inherited in an autosomal recessive manner, meaning a child must inherit one defective gene from each parent to show the disease. Heterozygotes are carriers, because they inherit one normal gene and one defective gene. Carriers show no symptoms of galactosemia.
Answer:
Scientists define density as the mass of a substance per unit volume. The word “per”
signals that thinking about density requires thinking about a relationship. It is the relation
between the mass (or weight) of one unit of a material and the volume of that one unit.
Density cannot be directly perceived or measured. It must be inferred from the
relationship of the mass and volume. However, it can be determined by calculation
which is how many schools teach it. To calculate density, you first measure the weight
and volume of an object precisely, then you divide the mass by the volume (i.e. d=m/v,
density equals mass divided by volume). So for example, the density of water is 1 gram
per cubic centimeter because a volume of 1 cubic centimeter of water has a mass of 1
gram. A substance which has a mass of greater than one gram per cubic centimeter
has a density greater than 1.0 gram per cubic centimeter; a substance which has a
mass of less than one gram per cubic centimeter has a density of less than 1.0 gram
per cubic centimeter.
Explanation:
Answer:
"bark" (and any subsequent words) was ignored because we limit queries to 32 words
Explanation:
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