To test for the presence of reducing sugars, a food sample is dissolved in boiling water. Next, a small amount of Benedict's reagent is added and the solution begins to cool. During the next four to 10 minutes, the solution should begin to change colors. If the color changes to blue, then no glucose is present. If a high amount of glucose is present, then the color change will progress to green, yellow, orange, red and then a dark red or brown.
Ultraviolet radiation may increase when there is an increase in sunspots
Answer:
<u><em>Nucleotides base known as A is Adenine.</em></u>
Explanation:
A nucleotide comprises of the following three things:
- A nitrogenous base: <em>There are 5 types of nitrogenous bases. Adenine which is written as A, Guanine which is written as G, Cytosine which is written as C, Thymine which is written as T. The thymine is replaced by a Uracil in RNA. Uracil is written as U</em>.
- A five carbon sugar which is known as deoxyribose in the case of DNA and ribose in the case of mRNA.
- Phosphate groups
<u>1</u><u>.</u><u>Antibiotic resistance is a consequence of evolution via natural selection. The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce. They will then pass this trait to their offspring, which will be a fully resistant generation.</u>
<u>2</u><u>.</u><u> </u><u>Bacteria evolve quickly because they grow fast and can share genes. Helpful mutations spread quickly in bacteria.</u>
<u>3</u><u>.</u><u>Taking antibiotics too often or for the wrong reasons can change bacteria so much that antibiotics don't work against them. This is called bacterial resistance or antibiotic resistance</u>
<u>4</u><u>.</u><u> </u><u>Antibiotic resistance leads to higher medical costs, prolonged hospital stays, and increased mortality. The world urgently needs to change the way it prescribes and uses antibiotics.</u>
<u>I</u><u> </u><u>think</u><u> </u><u>so</u><u> </u>
Answer:
B. meiosis
Explanation:
Meiosis is the process that produces our gametes. A cell that undergoes meiosis will divide twice resulting into 4 haploid daughter cells.