Answer: peripheral Arterial Disease ( PAD)
Explanation: This Disease can be as a result of Atherosclerosis (hardening of the artery )
In some PAD patients, the vascular system may compensate for the reduced blood flow by forming alternative routes, called collateral vessels, which bypass the affected vasculature. In others, collateral vessels may not be sufficient, resulting in foot pain at rest and non-healing sores on the feet.
To prevent PAD , patients are advised to desist from smoking, reducing fatty foods amongst others
It can be treated surgically in severe cases or non surgically in mild cases
The primary purpose of photosynthesis is to convert solar energy into chemical energy so that the plant can store that new chemical energy away for later use.
Answer: c. The positive control tube receives any genomic DNA from a student's sample that is predicted to be infected with Wolbachia.
Explanation:
Positive PCR control can be defined as the control sample that is used as a benchmark for comparison with the results of the PCR or polymerase chain reaction. It comprises of artificial genome or primers. For amplification of microbial DNA synthetic oligonucleotides are used as targets of each primer and a hydrolysis probe is also used. As it is already known that primer as well as hydrolysis probe has the specificity for the DNA strand so it will help in identification of the specific region or sequence in the DNA structure. Wolbachia DNA can be detected if the positive control consists of samples of students affected by Wolbachia that can give indication of whether the Wolbachia species is the same as that of the one which has caused infection.
Answer:
D. Fruit trees, birds/monkeys, tigers
Explanation:
Fruit trees are the primary producers and produce fruits and other plant parts as food for birds. Monkeys are omnivorous and derive nutrition from eggs of birds or fruits, seeds and other parts of the plant. Tigers are top consumers and are carnivores as they feed on monkeys and even birds. Therefore, the given ecosystem may have the following food chain:
Fruit trees (first trophic level and producers)----> birds /monkeys (second trophic level and first consumers)---> tigers (third trophic level and top consumers).