The claim could become valid scientifically if it is tested in a controlled setting with repeated results. The correct option is the first option.
<h3>Scientific validity</h3>
A statement without any experimental test is considered a hypothesis in science.
In order for tentative statements to become valid scientific claims, they must be tested experimentally in a controlled setting with the resulting data supporting the claims. The data must also be reproducible by independent researchers.
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Explanation:
DNA can be extracted by grinding the tissue in dry ice or liquid nitrogen with the mortar and pestel or a food grinder. the cell membrane must be disrupted,so that the DNA is released into extraction buffer.
Answer:
Proxima Centauri
Explanation:
Of the three stars in the system, the dimmest - called Proxima Centauri - is actually the nearest star to the Sun. The two bright stars, called Alpha Centauri A and B form a close binary system; they are separated by only 23 times the Earth - Sun distance.
Aquaporin (AQUA1) transport H₂O orders of magnitude faster across the erythrocyte plasma membrane than GLUT1 transports glucose because: AQUA1 does not undergo any conformational change while transporting water molecules whereas GLUT1 does and therefore has lesser Vmax.
Aquaporin is a transmembrane protein that transports water molecules across the membrane. These are the passive channel proteins, thus they do not have to undergo any conformational change while transporting the molecules.
GLUT1 is a glucose transporter that is a carrier protein performing facilitated transport. It can be abundantly found in RBCs and brain tissues. Since it is facilitated transport, the glucose is transported down its concentration gradient.
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Answer:
The majority of living things are made up of various types of cells that are each specialized to execute a specific purpose. Because certain enzymes, also known as proteins, play a big role in biochemical function, distinct sets of genes must be turned on and off in different cell types. This is how cells differ from one another.