Which material will students use in all three models?

D. Nucleus

Explanation:

Prokaryotes are unicellular organisms that lack membrane-bound structures, the most noteworthy of which is the nucleus.

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes. ... a membrane-bound nucleus.

All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid.

answer: a. a gene that causes a specific trait.

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).