Sweet 16 Organelles

Question 0

Chromatin

Answer 0

Structure:
•uncoiled DNA spread throughout the nucleus

Function:
•Controls all activities of the cell by turning genes on and off

Question 1

Nucleus

Answer 1

Structure:
•Large, round organelle; surrounded by a double membrane

Function:
•isolates DNA from cytoplasm; not found in prokaryotes

Question 2

Nuclear envelope

Answer 2

Structure:
•double membrane surrounding nucleus, connected to rough ER

Function:
• controls passage of materials into and out of nucleus

Question 3

Nucleolous

Answer 3

Structure:
•dense regions of proteins, DNA, and RNA in nucleus

Function:
•site of ribosome assembly

Question 4

Plasma (cell) membrane

Answer 4

Structure:
•lipid bolster with embedded proteins surrounding cell

Function:
•controls passage of materials into and out of the cell; communicates with adjacent cells