Answers:
thorium-234
Explaination:
Isotopes are defined as the variants of a particular chemical element obtained by radioactive decay which makes it differ in neutron number and nucleon number but have the same number of protons in each atom.
Uranium-238 produces thorium-234 by alpha decay. alpha particle is a helium nucleus which carry 2 neutrons andn 2 protons with the mass number 4. In alpha decay, nucleus emits alpha particles which tranforms or decay into an atom with a mass number 4 less and an atomic number 2 less.
The equation for alpga decay is attached below:
Hence, the isotope is thorium-234 .
Answer:
Option D, polysaccharides
Explanation:
Both Cellulose and starch are polysaccharides which are made up of several polymer units.
A polysaccharide is a sugar which is made up of large number of mono or disaccharide sugar units.
In case of Cellulose, the polymer unit is monosaccharide units of glucose connected by acetal beta linkages
While in case of starch, the polymer unit is again glucose units joined by glycosidic bonds.
Hence, option D
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Answer:
Centrioles are organelles involved in cell division. The function of centrioles is to help organize the chromosomes before cell division occurs so that each daughter cell has the correct number of chromosomes after the cell divides. Centrioles are found only in animal cells, and are located near the nucleus.
Explanation:
hope this helps <3
I think the answer to this is A
