Answer:
E
Explanation:
Denaturing is caused by extreme heat- NOT cold. So when you heat up a protein, its 3d shape is affected, it becomes straight and it cannot be reversible.
Answer:
Both Change A and B
Explanation:
Given that chemical changes is a form of change of matters that deal with the combination of various substances to form a new substance entirely that has different chemical and physical characteristics from its parents' substances.
Hence, when Animal waste is acted upon by anaerobic bacteria to produce biogas it is considered a chemical change.
Similarly, when biogas burnt as fuel it is also considered as a chemical change.
Therefore, in this case, the correct answer is "Both Change A and B" are chemical changes.
Carbon dioxide is the correct answer
The relevant field is astrobiology, the most highly funded branch of science that has the least scientific evidence supporting it. It encompasses cosmology, chemistry, geology, astrophysics, and biology predominantly and is exploring and attempting to generate knowledge on every aspect of naturalistic investigation of panspermia, habitability of exoplanets, energy sources in the cosmos, potential astro-intelligence, and composition of meteors, comets, asteroids, planets, solar systems and galaxies. The scope of astrobiology must accommodate virtually all of physical reality to be truly comprehensive.
Astrobiology is not funded well enough for the scope of the task, but is driving much of the science universe exploration projects to try to answer one of the fundamental questions of human history, is there other life and how did life come into being. Panspermia, non-directed (biochemical compounds from extraterrestrial sources of any type) and directed (intentional or non-intentional alien transmitted sources) are a prime astrobiological theoretical field and the search for extraterrestrial intelligence,SETI, is also a prime focus of astrobiology,
Answer:
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Explanation:
ANSWER OF 1ST QUESTION -
1) it protects the nucleic acid from digestion by enzymes, 2) contains special sites on its surface that allow the virion to attach to a host cell, and 3) provides proteins that enable the virion to penetrate the host cell membrane and, in some cases, to inject the infectious nucleic .
ANSWER OF 2ND QUESTION -
Mutations can produce viruses with a reduced pathogenicity, altered host range, or altered target cell specificity but with intact antigenicity. Such viruses can sometimes be used as vaccine strains.
