A) Random fertilization
B) Cytokinesis
C) Crossing over
D) Independent assortment of chromosomes in meiosis
Answer:
In the given molecule of NH2CHRCO2H the ball and stick model gives an idea about the bonds arranged in this molecule. With the given information it is easy to identify that Carbon and Oxygen atoms in the double bond CO will have the strongest partial positive charges.
As the bond is that is first oxygen is attached to carbon by a double bond and another oxygen is attached by a single bond. So, when carbon is attached to oxygen which is more electronegative pulls the electron cloud towards itself and gives carbon a partial positive charge.
A. Cation
B. Anion
C. Either cation or anion
D. Neither cation nor anion
Answer:
In the atom of Magnesium 25, , there are 12 protons as the proton number is always equal to the atomic number. The molecular mass of Magnesium is 25. The neutron number is given by the formula Molecular mass- Proton number : 25-12=13. So, the neutron number is the magnesium atom is 13.
Answer:
Magnesium has atomic number 12. Its electronic configuration is 2,8,2. Thus, it has 2 valence electrons. It loses its two electrons to get a stable or octet configuration. The number of valence electrons in an element can be identified by referring to the group it belongs to.
a. double (nonpolar) covalent
b. single (nonpolar) covalent
c. polar covalent
d. ionic
A) The atomic mass is equal to the atomic number.
B) The number of electrons is equal to the number of neutrons.
C) The number of protons is equal to the number of electrons.
D) The atomic mass is equal to the number of electrons
a. A central carbon
b. A fatty acid group
c. An amine group
d. An acid group
Which of these animals has only one ear? Options A. Mole B. Lemur C. Praying Mantis D. Snail [bg_collapse view=”button-orange” color=”#4a4949″ icon=”arrow” expand_text=”Show Answer” collapse_text=”Hide Answer” ] The Correct Answer is C. Praying Mantis [/bg_collapse] Answer Explanation In its name, the praying mantis gets its name from its prominent front legs, which … Read more
