Penicillin was an accidental discovery I believe
Answer:
Building desalination plants and using rain gauges.
Explanation:
Using the process of elimination, seismographs are incorrect because they measure earthquakes and obviously earthquakes have nothing to do with droughts (ok, maybe a little bit). Snowplows are used to plow snow, so the remaining answers should be correct.
Answer:
Transcription is the process by which DNA is copied (transcribed) to mRNA, which carries the information needed for protein synthesis. Transcription takes place in two broad steps. First, pre-messenger RNA is formed, with the involvement of RNA polymerase enzymes. The process relies on Watson-Crick base pairing, and the resultant single strand of RNA is the reverse-complement of the original DNA sequence. The pre-messenger RNA is then "edited" to produce the desired mRNA molecule in a process called RNA splicing.
Explanation:
Given the following choices
A. position of the carbon-carbon double bonds
B. presence of enclosed carbon atom rings
C. branching of the carbon chain
D. length of the carbon chain
The answers are; B, C & D. Carbon is a versatile atom (with a valence of +4) and is able to bond with other elements and other carbon atoms in different ways. It can form linear and branching chains of varying lengths. It can form double and single bonds with elements and form rings such as the deoxyribose sugars.
Answer:
c. Wastes will build up in the blood
Explanation:
Glomerular filtration rate is a measure of renal function that can be calculated from a simple blood test that measures blood creatinine levels and takes into account age, ethnicity, gender and other factors. Through the glomerular filtration rate, your doctor can determine the stage of kidney disease and plan treatment. The lower the GFR, the more severe the renal failure.
Since kidney failure is the slow loss of kidney function, its main function is to remove waste and excess water from the body. We can conclude that if the glomerular filtration rate is too low, debris will accumulate in the blood.