The form of DNA described as "disorganized strands of nucleotides" is double helix

chromatin

chromosome

sister chromatid

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false