Answer:
Research meteorologists study atmospheric phenomena such as lightning. Atmospheric scientists study the weather and climate, and examine how those conditions affect human activity and the earth in general
Explanation:
Answer:
B) Telomerase is a ribonuclear protein containing a section of RNA complementary to the telomeres
C. telomerase is reactivated in cancer cells, contributing to their immortality
Explanation:
- Telomerase elongates telomere ends
- Telomerase binds to a RNA molecule containing a sequence complementary to the telomeric repeat.
- Telomerase is usually not active in somatic cells but is active in cancer cells- the protein acts to extend the shortened telomeres in these cells preventing them from dying
Answer:
A monosaccharide is made of a 6-carbon cyclic ring. 5 out of the 6 form part of the ring while the other carbon acts as a side group of the 5’ carbon in the ring. When forming a disaccharide with the next monosaccharide, the OH of the 1’ C of one monomer undergoes a condensation reaction with the OH of the 5’ C of the next monomer. This results in the formation of a glycosidic bond and the loss of a water molecule.
Improving energy efficiency of a home generally means reducing the exchange of outdoor air (ventilation) with indoor air that can be contaminated with radon gas.
Explanation:
The presence of radon gas is not detectable by humans. It is odorless, colorless, tasteless, and radioactive. It can cause lung cancer over time and quantity breathed in. It enters buildings through cracks and voids in their foundations from the soil surrounding them.
The energy efficiency of buildings has been steadily increasing as we try to conserve energy and reduce costs. By so doing we also reduce the airflow between inside and outside, especially during the colder months of the year.
This practice will result in radon gas concentration buildup to values that could become unsafe for human consumption.
There are a number of methods to reduce the threat of radon gas in a house, but first there needs to be a measurement of the level of gas in the building. If the threat is high, the radon gas must be removed.
The average gene in the human genome is approximately <u>27,000 base pairs</u> base pairs in length.
<h3>What does human nuclear genome contain?</h3>
- One gene. The trypsinogen protein, an inactive precursor to the digestive enzyme trypsin, is synthesized using information from the TRY4 gene.
- Two parts of a gene: These two genes, designated V28 and V29-1, each code for a particular region of the T-cell receptor protein, for which the locus is called.
- Pseudogene one. A pseudogene is a replica of a gene that is not functional and often one whose nucleotide sequence has altered, rendering its biological information unintelligible.
- These are sequences that appear often across the genome.
- The terms LINEs (long interspersed nuclear elements), SINEs (short interspersed nuclear elements), LTR (long terminal repeat) elements, and DNA transposons refer to the four main categories of genome-wide repeats.
- Two microsatellites—sequences in which a brief motif is repeated twice—are involved. The sequence: is found in one of the microsatellites that has the pattern GA repeated 16 times.
5′- GGGGGGGGGGGGGGGGGGGGGGGG
3′-CTCTCTCTCTCTCTCTCTCTCTCTCTCTCTCT-5′
- The TATT sequence is repeated six times on the second microsatellite.
- Last but not least, almost 50% of the 50 kb portion of the human genome that we are interested in is made up of lengths of non-genic, non-repetitive, single-copy DNA that have no known meaning or function.
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