Explanation:
There are two classes of nuclear reactions which are:
- Nuclear fission
- Nuclear fusion
In nuclear fission, a radioactive isotope which has a heavier nucleus spontaneously disintegrates(breaks up) into 2 lighter nuclei and several neutrons with a large release of energy.
A nuclear fusion occurs by the combination of small atomic nuclei into larger ones with the release of a large amount of energy.
I hope you can make the best choice from this explanation.
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Answer:
Control group: volunteer stationary bike riders in a pollution-free chamber
Experimental group: volunteer stationary bike riders in a chamber filled with air pollutants common to Los Angeles
Independent variable: exposure to air pollution
Dependent variable: The heart rates (physical fitness) of the volunteer riders.
Explanation:
In a scientific experiment, data is compared between the control group and experimental group to ascertain the effect of the independent variable on the dependent variable. A control group is the group in an experiment that is not treated with the independent variable i.e. the independent variable is controlled while the experimental group is the group that is treated with an independent variable.
N.B: The independent variable is the variable controlled by the experimenter in order to influence the dependent variable (measurable outcome).
In this experiment, the independent variable is the AIR POLLUTION the volunteer riders are exposed to while the dependent variable is the PHYSICAL FITNESS/ HEART RATES of the volunteer riders, which is dependent on the exposure to air pollution (independent variable).
The control group in this experiment is the volunteer riders placed in a POLLUTION-FREE CHAMBER where the independent variable cannot influence or have any effect on the measurable variable (dependent). The experimental group is the volunteer riders placed in a CHAMBER FILLED WITH AIR POLLUTANTS. The independent variable (air pollution) has been changed in the experimental group.
Answer:
A statement can contain one argument, more than one argument or no argument.
Argument are intended to determine the degree of truth hence enabling a conclusion to be made. It contains one or more premises and only one conclusion.
A premise is the statement in the argument that provides reasons to support a conclusion.
In the first statement, there is no argument. This is because there is neither a premise nor a conclusion
The second statement has a conclusion(the last sentence) and two premises(first two sentences) therefore it is an argument.
A mutualistic and A a decrease in the number of corals
Answer:
Methionine- Serine- Histidine- Aspartate- Glycine- stop
Explanation:
Translation, which occurs in the ribosomes, is the second stage of protein synthesis where mRNA transcript is used to synthesize a peptide chain that eventually forms a protein. The mRNA sequence is read in a group of three nucleotide called CODON. Each codon specifies a particular amino acid, which is read and added to the growing peptide chain.
In this question, a DNA sequence reds 3'- TACAGGGTGCTACCCACT-5, the
mRNA sequence from this DNA during transcription will be:
AUG UCC CAC GAU GGG UGA
From this mRNA sequence, the peptide chain that will result following translation is:
Methionine- Serine- Histidine- Aspartate- Glycine- stop