In the process of eukaryotic pre-mrna splicing, how is the lariat intermediate formed?

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

Why is excretion necessary to maintain homeostasis?

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.