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
Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how
Nursing student will find it funny
Nursing student will understand it
Hints of Earth’s Early Appearance
These illustrations show Ellen Craft, a slave with and without a disguise. She dressed “as a disting
An overweight child not only has different kinds of encounters with his peers