During an experiment on frog embryos, a scientist removes a few cells from the neural tube. what effect would this have on the embryo? a. development of the nervous system is affected. / b. development of the digestive system is affected./ c. development of the circulatory system is affected.

 A. Development of the nervous system is affected

Explanation:

An embryo is a primitive stage of development of a young organism. It is produce by the fusion of the haploid gametes of parents so as to produce diploid zygote. The cells of zygote of animals and humans proliferate and divide to form embryo which consists of specialized cells which give rise to specialized structures and organs like heart, lungs and brain necessary for performing vital functions like circulation, respiration and control and coordination.

According to the given situation, if few cells are removed from the neural tube of  a developing embryo then the specialized cells which are responsible for formation and proper functioning of the nervous system will be affected. Overall development of the nervous system will be hampered.

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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