Download HBIO Stations Activity DNA/Chromosomes Directions: Answer the

HBIO Stations Activity
DNA/Chromosomes
Directions: Answer the following questions concerning each station at the lab tables.
Station 1:
(A) Sketch one of these cells. Did you draw a nucleus? How does the size of this cell compare to
human cells? Label your drawing prokaryotic – bacteria.
(B) Sketch the cell; be sure to draw the nucleus. Do you see other structures in the cell? Draw the
structures in the cell.
Station 2:
(A) These cells are from a root tip that is growing and dividing. Sketch the cell the pointer is on. Label
the nucleus. How do you know this is a plant cell?
(B) Sketch the cell the pointer is on. Pay particular attention to the dark lines in the middle of the cell.
Is this a eukaryotic or prokaryotic cell? Is this cell dividing or not? What are the dark lines? Why
aren’t the dark lines in every cell?
Station 3: Look at the pictures in these two books. Now describe how a chromosome forms.
Station 4: Page 130 in the green book shows cells that are not dividing. Page 168-169 in the blue book
has photos of cells that are dividing. Describe the differences in the nucleus of a dividing and nondividing cell.
Station 5: These are pictures of human karyotypes. How many chromosomes do humans have? Do
males and females have the same number of chromosomes? Are all the chromosomes alike? Explain.
Station 6: This picture shows DNA replicating. What does replication mean? How does the new DNA
ladder know which order to put the bases in?