Question

1. the dark, circular

nucleolus
is where
ribosome assembly begins.

1. the thread - like chromosomes are spread

throughout the nucleus in the form of

nucleolus
chromatin
nuclear pores

eus is dotted
to allow

nuclear
pores
2 of 7

Explanation:

For question 1: The nucleolus is a dark, circular structure within the nucleus and is the site of ribosome assembly. So the correct term for the first blank is "nucleolus".
For question 2: Thread - like chromosomes in a spread - out form within the nucleus are called chromatin. Chromatin is the complex of DNA and proteins that makes up chromosomes when they are not condensed for cell division.

Answer:

1. nucleolus
2. chromatin