Answer:
<em>c</em><em>.</em><em> </em><em>a</em><em> </em><em>f</em><em>a</em><em>c</em><em>t</em><em>o</em><em>r</em><em> </em><em>t</em><em>h</em><em>a</em><em>t</em><em> </em><em>l</em><em>i</em><em>m</em><em>i</em><em>t</em><em>s</em><em> </em><em>o</em><em>r</em><em> </em><em>p</em><em>u</em><em>t</em><em>s</em><em> </em><em>r</em><em>e</em><em>s</em><em>t</em><em>r</em><em>i</em><em>c</em><em>t</em><em>i</em><em>o</em><em>n</em><em>s</em><em> </em><em>o</em><em>n</em><em> </em><em>a</em><em> </em><em>d</em><em>e</em><em>s</em><em>i</em><em>g</em><em>n</em><em>.</em>
Explanation:
constraint - a limitation or restriction.
The corrrect option is D.
Since the scientist was trying to determine if substance A affect the rate of reaction of X and Y, the best thing to do is to make substance X and Y to react together first, he should then measure the time taken for the reaction to take place. Next, he should make X and Y to react together again, but this time in the presence of A. The time taken for the reaction to occur should be measures. The scientist can now compared the two time measurements and decide if there are difference between them or not.
This is the definition. I hope it helps.
Answer:
<em>A mutation in his offspring</em>
Explanation:
A mutation can be described as any change which occurs in the DNA of an organism. Mutations can be either heritable or non-heritable
If a mutation occurs in the gamete cells of a male, the mutation will be heritable and will occur in his offsprings.
Other options, like option D, is not correct because a mutation in the gamete cells will not cause a mutation in the somatic cells. Gamete cells are the sex cells and hence mutation will arise in the sex cells.
Answer:
<h2>
lack antibiotic resistant genes</h2>
Explanation:
Most of the bacterium contains plasmid. As given, if bacterium regenerates from an endospore that did not possess any of the plasmids so the generated bacterium also lack antibiotic resistant genes.
Plasmid are circular form of extra chromosomal DNA that contain genes for antibiotic resistant and genes for conjugation , and also for many other roles.
Plasmid replicate independently of the chromosomal DNA, and can be many in number. If the bacterium lacks plasmid so these bacterium also lack antibiotic resistant genes.