Answer:
24555 years
Explanation:
Data provided in the question:
Half life of carbon 14 = 5700 years
carbon present in the dead man = 5% of the original amount of carbon 14
Now,
let the initial Amount of carbon be 'A'
Therefore,
after half life
Amount of carbon = 
Thus,
= 
here,
k is the decay constant
t is the time = 5700 years
therefore,
1 = 
or
0.5 = 
taking natural log both the sides
-0.69314 = 5700k
or
k = - 0.000122
therefore,
for dead man Amount of carbon = 5% of A = 0.05A
thus,
0.05A = 
or
0.05 = 
taking natural log both the sides
we get
-2.995 = - 0.000122 × t
or
t = 24555.18 ≈ 24555 years
Answer:
Label A. is probably Mitochondria, and Label B. is probably the nucleaus, but Im not sure about C. The ribisome or the endopplasmic reticulam, maybe??
Explanation:
Answer:
True.
Explanation:
The cytoskeleton is also known as the cell skeleton that helps in the movement of the cell organelles. Three different types of cytoskeleton are microtubules, microfilaments and intermediate filaments.
The microtubules shows different function in different cell stages. During prophase stage of the cell cycle, the microtubules gets increase in length. During anaphase stage of the cell cycle , the nonkinetochore microtubules increase in the length the kinetochore microtubules gets short. During telophase stage of the cell cycle, the nonkinetochore microtubules gets disassemble.
Thus, the answer is true.
Answer:
Examples include rabbits, bacteria, salmon, plants such as weeds and grasses, etc. Many insects are r-selected. For example, ants can be considered r-selected. Plants such as dandelions are another good example of an r-selected species.
<span>Epithelial tissue is densely packed cells that used most in the area where protection is needed. This cells mostly used in skin, some with more keratin which will increase their ability to protect. In bone, the main protective layer is calcium mineral which was deposited by osteocytes. Because this bone doesn't really need more epithelial cells. Bone tissue only needs a good vascularization and connective tissue to support it.
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