One type of symbiotic relationship between a fungus and a plant involves 

A. nitrogen fixation.
B. lichen.
C. mycorrhiza.
D. endospores.


C. mycorrhiza.

Biology & Microbiology

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Restriction endonucleases are produced by

A. fungi. B. protozoa. C. plants. D. bacteria. E. All of the choices are correct.

Biology & Microbiology

Multiple sclerosis (MS) is a progressive inflammatory disease of the central nervous system characterized by intermittent damage to myelin (called demyelination) caused by the destruction of specialized cells (oligodendrocytes) that form the substance. Given what you know about the function of myelin, predict the consequences associated with its progressive loss.

_____ Sensory abnormalities (e.g., tingling, numbness, itching, tightness, burning, shooting pain) and motor coordination loss. _____ Racing heartbeat, hyperactivity and nausea. _____ Low levels of potassium in the blood (hypokalemia). _____ Balance and equilibrium abnormalities (e.g., dizziness, vertigo, uncoordinated movements, tremor).

Biology & Microbiology

Ella is a normal XX girl who is red-green

colorblind. She is pregnant and the father is Terrick who has normal color vision. What is the probability that - if they have a daughter - the daughter will be red-green colorblind?

a. 0% b. 25% c. 50% d. 100% e. impossible to tell with the information provided

Biology & Microbiology

Grana, thylakoids, and stroma are all components found in

a. vacuoles. b. chloroplasts. c. mitochondria. d. lysosomes. e. nuclei.

Biology & Microbiology