<span>i think it is a.Molecules move against their concentration gradient. hope it helps
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Answer:
A. It is the most massive part of the atom.
Answer:
Many small organisms can be preserved within these layers of sediment through time. The changing abundances of these fossils through time can tell us whether a change in the environment or climate was gradual or abrupt. Studying fossil pollen and other fossils helps scientists to learn more about climate change.
Answer:
These bands represent different confirmation of DNA
Explanation:
pGLO DNA is a plasmid DNA that is used as a vector for genetic engineering. Plasmid DNA is found in supercoiled confirmation in vivo. The double helix forms extra twists to easily fit inside the cells. During isolation of plasmid from the cell, nicks can be introduced in the DNA due to harsh isolating methods or contamination by nuclease. As a result the supercoiled confirmation is changed into circular confirmation. It is bulkier than the supercoiled form and travels more slowly. When both DNA stands get cut at the same place, the DNA gets liner confirmation. In the end, supercoiled DNA runs the fastest on gel followed by linear DNA and then the circular DNA.
Ok first of you need to know what a lipid is. A lipid is <span>a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. This includes waxes, steroids etc. Lipids are important for living cells. Together with carbohydrates and proteins, lipids are the main constituents of plant and animal cells. Cholesterol and triglycerides are also considered lipids. </span>
<span>So I would go with C. </span>
<span>Hope I helped. :) </span>
