Answer:
NO
YES
NO
YES
Explanation:
Im not really sure if im right.
Answer:
17.5 g of manganese-56
Explanation:
Now we have to use the formula;
N/No= (1/2)^t/t1/2
Where
N= mass of manganese-56 left after time (t) = ????
No= initial mass of manganese-56 present = 20 g
t= time taken for N mass of manganese-56 to remain = 7.8 hours
t1/2= half-life of manganese-56 = 2.6 hours
Then we substitute values;
N/20 = (1/2)^7.8/2.6
N/20 = (1/2)^3
N= (1/2)^3 ×20
N= 2.5 g of manganese-56
Mass of manganese-56 that has disappeared after 7.8 hours= 20 -2.5 = 17.5 g of manganese-56
Answer:
DNA is consist of two strands that are coiled together to form a double helix structure in which both the strands are anti-parallel. The direction of one strand is from 5' to 3' and the other has 3' to 5'.
DNA is made up of nucleotide, phosphate group and deoxyribose sugar. The two anti-parallel strands on DNA are composed of nucleotide and bonded with hydrogen bond. There are four nitrogenous bases present in each nucleotide e adenine (A), guanine (G), Thymine (T) and cytosine (C). Where A and T are bonded with double hydrogen bond and G and C are bonded with triple hydrogen bond present complementary to each other in both the strands.
sugar -phophate group forms the backbone of the DNA.
They could eat unicellular organisms. Hope this one actually helps
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