Answer: The drug abuse is influenced by the environment and exerts influence on the gene expressions.
Explanation:
The genetic make up of the person is decides, which genes will be expressed and develop a trait in an individual. But this genetic expression can be influenced by the environmental factors like food, exposure to sunlight, and others. This study which relate environment with the genetic make up is called epigenetics. No person is drug addict by birth but the consumption of drug can influence the genetic make up and traits in a abuser. So here, the environment is influencing the genetic basis of a abuser.
<h2>Scurvy </h2>
Explanation:
(a) Collagen is the major structural component of cartilage,bones and tendons
- The basic unit of collagen is tropocollagen and each tropocollagen consists of three coiled left handed polypeptide chains called α chains
- Generally each α chain consists of a repeating tripeptide sequence called: G-X-Y
- Here G represents glycine; X represents proline and Y represents hydroxyproline
- Rigidity of collagen molecule is due to presence of proline and hydroxyproline
- Hydroxylation of proline is catalysed by prolyl hydroxylase enzyme which use ascorbate,α ketoglutarate and oxygen
- α ketoglutarate is oxidatively decarboxylated to form carbon dioxide and succinate
- Sequence of events leading from a dietary vitamin C deficiency to symptoms such as bruising and breakdown of supporting tissues includes: tissue levels of ascorbic acid is low; enzyme prolyl hydroxylase is inactive; proline is not hydroxylated; the triple helix is inadequately stabilized; collagen breaks down; defects in tissues that depend on collagen
; tissues that depend on collagen are subject to breakdown and bruising
(b) Sailors are no longer susceptible to scurvy because fresh fruits which are the source of vitamin C source are available now
British sailors called "limeys" to this day,this term reflects the British navy's use of limes
Annual range is the difference of the mean temperature between the hottest and the coldest month.
<span>Cullowhee, NC,
Hottest month:
July - Ave. High: 85 </span>°F ; Ave. Low - 62 °F . Mean = (85+62)/2 = 73.5 °F<span>
Coldest month:
January - Ave. High: 48 </span>°F ; Ave. Low - 24 °F. Mean = (48+24)/2 = 36 °F
Annual Temperature range = 73.5 - 36 = 37.5 °F
<span>
Albuquerque, NM, - </span><span>largest annual temperature range
</span><span>Hottest Month:
July: Ave High: 90 </span>°F ; Ave. Low: 66 °F; Mean = (90 + 66) / 2 = 78 °F<span>
Coldest Month:
December: Ave High: 46 </span>°F ; Ave. Low 26 °F ; Mean = (46 + 26)/2 = 36 °F
Annual Temperature range = 78 - 36 = 42 °F
<span>
Los Angeles, CA - lowest annual temperature range</span>
Hottest Month:
August: Ave High: 79 °F ; Ave. Low: 62 °F ; Mean = (79 + 62) / 2 = 70.5 °F
Coldest Month:
December-March: Ave High: 67 °F ; Ave. Low: 51 °F ; Mean = (67 + 51) / 2= 59 °F
Annual Temperature range = 70.5 - 59 = 11.5 °F
It was made of a skeleton of iron and a skin off glass. Hope this helps.
Answer AND Explanation:
Very often, one type of organism or species in an ecosystem happens to be the same food source for other types of consumers. The different food chains that exist in an ecosystem therefore form a complex network called food web. Food webs are more complex than food chains and therefore there can be more than one primary producer thus increasing the flow of energy an ecosystem.
