Which of the following amino acids have more than one asymmetric center?

check all that apply.
serine
isoleucine
proline
leucine
tryptophan
arginine
glutamate
threonine
lysine
tyrosine
glycine
alanine
asparagine
phenylalanine
histidine
valine
methionine
glutamine
cysteine
aspartate

answer: mercury

explanation:

idk what is it? is this a question that you know the answer or u dont

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally