A student encounters a pondweed which, judging from its appearance, seems to be a charophyte. She brings a sample back to her biology lab. Using only a compound light microscope to study the sample, which of the following features should help her to determine whether the sample comes from a charophyte or from some other type of green alga?
1. molecular structure of enzymes inside peroxisomes
2. structure of sperm cells
3. presence of phragmoplasts
4. rings of cellulose-synthesizing complexes
A) 1 and 3
B) 1 and 4
C) 2 and 3
D) 1, 3, and 4
E) 2, 3, and 4
Cirrhosis. Cirrhosis is characterized by a chronic deterioration of the liver, replacing healthy cel
Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how
New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670
Student Raises Hand in Class
An eager graduate student at Carleton, counts geese in the marshes off the Ottawa river. In ...