Answer:
The correct option is: e. molecules move across the plasma membrane against their concentration gradient
Explanation:
Active transport refers to the <u>movement of the particles or molecules from higher concentration to lower concentration, across the plasma membrane of a cell.</u> This transport requires cellular energy as the movement of the molecules is <u>against the concentration gradient</u>.
Active transport can be divided into primary and secondary active transport.
Answer:
Scientist obtain the primers from the DNA polymerases that preform the synthesis which must have an existing strand of nucleotides already in order to attach new DNA nucleotides. The existing strand of new DNA nucleotides is the primers
Explanation:
In order to happen DNA synthesis of a wanted portion of DNA in laboratory,
Scientist obtain the primers from the DNA polymerases that preform the synthesis which must have an existing strand of nucleotides already in order to attach new DNA nucleotides. The existing strand of new DNA nucleotides is the primer. To that existing strand of nucleotides we call primer. In a lab, scientists produce DNA primers through specific sequences that bind to other sequences of a single-thread DNA molecule and these are the primers commonly used to perform PCR.
Answer:
I think Rupa's bread will come out softer than Kala's.
Explanation:
Using hot boiling water to activate yeast can kill it. Instead of being absorbed by the protein, the hot water is absorbed into the starch molecules.
It is better to use warm water to get a more fluffy bread.
Soft bread is soft because CO2 produced by yeast and water that gets turned to steam by the baking process gets trapped into pockets by a mesh of gluten, causing the dough to expand. The dough then solidifies, keeping its shape. If your bread is not soft then it hasn't expanded enough for one or more reasons.
Have a good day and stay safe!
The plateau phase of an action potential in cardiac muscle cells is due to the influx of Ca2+ ions through the slow Ca2+ channels.
Different electrical pattern is involved in all the contractile cells. In cardiac muscle cells, there is a rapid depolarization which is followed by a plateau phase and then the repolarization occurs. This allows the cardiac muscle cells to pump blood effectively because of the long refractory period.
During the plateau phase, the action potential of the membrane drops slowly . This happens due to the opening of the slow calcium ion channels which allow the Ca2+ ions to enter the cell. Few K+ channels are also open which allow some K+ ions to exit the cell.
To learn more about cardiac muscle cells here
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Answer: Increased blood pressure
Explanation:
A thickened left ventricle increases the risk of heart attack, heart failure and sudden cardiac death. can damage your arteries by making them less elastic.
