<h2><em>explain how surface water is able to form on permafrosts able to form on permafrost</em></h2>
- <em>Just as a puddle of water freezes on a frigid winter night, <u>water that is trapped in sediment, soil, and the cracks, crevices, and pores of rocks turns to ice when ground temperatures drop below 32°F (0°C).</u></em>
<em><u>hope </u></em><em><u>it</u></em><em><u> helps</u></em>
<em><u>#</u></em><em><u>c</u></em><em><u>a</u></em><em><u>r</u></em><em><u>r</u></em><em><u>y</u></em><em><u> </u></em><em><u>on</u></em><em><u> learning</u></em>
Answer:
The correct answer is "short RNA primers; Okazaki fragments".
Explanation:
The missing information of this question is as follows:
"Replication of the lagging strand of dna is accomplished by repeatedly making __________ followed by 1,000-2,000 nucleotide segments called __________"
The correct answer is "short RNA primers; Okazaki fragments".
DNA replication always occurs from 5' to the 3' end, in what is known as the directionality or the end-to-end chemical orientation in molecular biology. This fact makes difficult the synthesis of the lagging strand of DNA. In order to achieve this short RNA primers are bound to segments of DNA (serving as the 5' end available for the DNA polymerase to synthesize), which leads to the discontinuous synthesis of Okazaki fragments that are later linked together by the enzyme DNA ligase.
1 : Canadian Shield - tundra.
This means that it's characterized by low temperatures which stop and limit plant growth. It's similar to the desert, except it has more precipitation
2 : Alaskan plains - subarctic
Due to its closeness to the arctic.
3 : Seattle, Washington - Marine west coast (West Coast of the Pacific Ocean - the closeness of the ocean has a determining influence on the climate)
4 : Washington, D.C. humid continental climate, with mild but wet winters
Large molecules often cross the plasma membrane while inside vesicles.
Explanation:
The plasma membrane is a fluid membrane mad of phospholipids bilayer. The fatty acid chains are sandwiched in between the phosphate ends of the lipid layers. The fluidity of the membrane is due to the fact that these molecules, including the integral proteins that span the membrane are NOT covalently bound to each other hence can freely move within the membrane. Cholesterol molecules are intercalated in between the fatty acid chains and prevent these carbon chains from binding to each other tightly through hydrogen bonding hence adding to the fluidity of the membrane. The cell membrane has natural pores within it that allow small molecules such as water to pass through, passively, in and out of the cell. Larger molecules have to pass through channels created by the integral proteins while the largest molecules are taken in by endocytosis and taken out by exocytosis, which translates to vesicle transport in cell.
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