Answer:
protons, neutrons, and electrons.
Out of all the choises
a. cells are the building blocks of life
b. cells all arise from pre existing cells
<span>c. cells are the basic living units of structure an function </span>
<span>d. all of above
</span>it would be d
Endoplasmic reticulum serves as transpiration area. The correct option is B.
<h3>What is endoplasmic reticulum?</h3>
The endoplasmic reticulum (ER) is a large, dynamic structure in the cell that performs numerous functions such as calcium storage, protein synthesis, and lipid metabolism.
The ER's various functions are carried out by distinct domains, which include tubules, sheets, and the nuclear envelope.
The endoplasmic reticulum can be smooth or rough, and its function is generally to produce proteins that allow the rest of the cell to function.
Ribosomes, which are small, round organelles that make proteins, are found in the rough endoplasmic reticulum.
Thus, the correct option is B.
For more details regarding endoplasmic reticulum, visit:
brainly.com/question/13118914
#SPJ4
Cnidarians were the first phylum that scientists saw tissue level organization in. Tissue level organization meaning cells all of one type start to function in a unified way.
Tin, because it has five energy levels with four electrons in the fifth level
.
Explanation:
Tin has an electronic configuration as
1s2,2s2,2p6,3s2,...........4d10, 5s2,5p2
They have four valence electrons in their outer shell
Among the four diagrams given Tin is least reactive because the atomic radius of tin is largest among all four options. Due to large atomic radius electronegativity decreases and hence Tin is the least reactive element among Neon, Chlorine, gallium and tin.
The electronegativity of an element is its tendency to complete its octet by attracting electrons towards itself. Also tin is at the lowest place in the periodic table among all the four mentioned elements, its ionization energy is also low hence less electronegative and least reactive.
