Chromatin is dna that makes a chromosome and chromosomes are different dna strands in a cell, sister chromatids are identical pieces of dna
Answer: Cardiovascular telex.
Explanation: During physical exercises which involves running, there is a reduction in the systemic vascular resistance produced and these constitutes a change in the heart rate and respiratory rate caused by the neural mechanisms which control the cardiovascular system which regulate the circulation of adequate oxygen supply and release carbon dioxide.
Answer:
Explanation:
Benefits of rainforest ecosystems. 1. Preservation of species. Because they are so biodiverse, healthy rainforest ecosystems are the perfect places to preserve huge numbers of species that would otherwise be endangered.
Answer:
Decomposition rates would be lowered because fungi would be destroyed.
Explanation:
The fungi are considered one of the decomposers of nature along with ascomycetes and the bacteria. The fungi are considered decomposers as the heterotrophic organism which absorbs the nutrients from the organism.
In the given question, when the fungicide was sprayed on the area with the fungus, then the decomposition rate of that area will decrease as the fungicide kills the fungi. As a result of this killing, the rate of decomposition will decrease in that area.
Thus, the selected option is correct.
Answer:
C. 3, 2, 1
Explanation:
During a single PCR cycle, the very first step is the heat separation of the double stranded DNA. Primer binds only single stranded DNA/RNA because it has complimentary bases which match single strand of DNA/RNA that is why it is necessary to unwind both the strands of DNA by providing temperature.
As soon as the DNA strands have separated by increasing the temperature to ~ 95 °C, in the next step the primer binds the portion of DNA which is complimentary to the bases of the primer. In order for primer to bind DNA, the temperature is lowered to ~ 72 °C and the process is called as annealing.
Once primer has bound to the DNA, the next step is polymerization i.e. nucleotides which are the monomer units of DNA are added one by one with the help of enzyme named as Taq polymerase. This is how the strand extends ahead of primer and exact copies of the given DNA are produced.
Note: PCR may be considered as in vitro DNA synthesis or replication.
