There is actually no membrane bounded or enclosed organelle that contain the genetic content and or information within a prokaryote. In bacteria, for instance the bacterial genome, which is that of a enclosed single double stranded circular DNA molecule is associated with histone like proteins and found within the cytoplasmic region of a cell in an irregular manner. It is termed the nucleoid.
Answer:
a) B
b) A
c) B
d) A
Explanation:
If the strength of an inter-molecular force increases, then
vapour pressure decreases and boiling point increases
- Hence, B is a gas at 300 mmHg due to its low boiling point
- A has a higher boiling point because of its strong inter-molecular forces
- B has weaker inter-molecular forces due to its higher vapour pressure
- A has higher heat of vaporization, because it has strong inter-molecular forces
Answer:
Metamorphic
Explanation:
Mars is very hot and metamorphic rock is formed by heat.
Answer:Noble gases:
are highly reactive.
react only with other gases.
do not appear in the periodic table.
are not very reactive with other elements.
Explanation:
Noble gases:
are highly reactive.
react only with other gases.
do not appear in the periodic table.
are not very reactive with other elements.
Answer:
<em>The answer is the opcion </em><em>b. Melt both cubes and look for a broader range of melting temperatures</em>.
Explanation:
<em><u>Crystalline solids</u></em><em> </em>
In crystalline solids, the atoms, ions or molecules are arrenged in a highly ordered and symmetrical pattern that is repeated along the principal directions, forming a network called a crystal lattice. There are 14 tipes of lattices, called Bravais lattices, and they are classified into seven crystal systems: cubic, triclinic, monclinic, orthorhombic, tetagronal, hexagonal and rhombohedral. Because of the regular arrangement of particles and the repeating geometric structure of crystal, all the bonds between the particles have equal strength, that is why a crystalline solid will have a distinct melting point (heat will cause the break of all the bonds at the same time). Common table salt is an example of this kind of solids.
<em><u>Amorphous solids</u></em>
Unlike crystalline solids, <u>in amorphous solids the particles do not have a repeating lattice pattern. That is why an amorphous solid does not have a definite melting point, instead, it melts gradually over a range of temperatures</u> (heat will not break all the bonds at the same time). Glass and gels are examples of this tipe of solids.
I hope this helps.