Cytosine and Thymine are chemically this type of nitrogenous base? A. Purine
B. Pyrimidine
C. Protein
D. Nucleotide

Which element is found in both dna and proteins

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.