Which statement correctly compares nucleic acids and carbohydrates?
a)they both contain phosphorus, but only nucleic acids contain hydrogen.
b)they both contain carbon, hydrogen, and oxygen in a 1: 2: 1 ratio.
c)they both contain carbon, but only carbohydrates contain oxygen.
d)they both contain carbon, but only nucleic acids contain phosphorous

The correct answer is D) They both contain carbon, but only nucleic acids contain phosphorous.

Nucleic acid includes DNA ( deoxyribonucleic acid) and RNA ( ribonucleic acid). They are composed of small units called as nucleotides, which includes nitrogenous base, phosphate group, and a 5- carbon sugar ( deoxyribose in  DNA and ribose in RNA).

On the other hand, carbohydrates are large group of organic compounds, which are composed of carbon, hydrogen, and oxygen.

Thus, both contain carbon, but only nucleic acids contain phosphorous is the right answer.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!