What is a difference between a Tn and IS element?
A) Tn elements can carry antibiotic resistance genes.
B) IS elements carry a transposase gene.
C) Tn elements integrate into plasmids and genomes.
D) IS elements integrate into plasmids and genomes.
A) Tn elements can carry antibiotic resistance genes.
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Which cell structure is most likely responsible for sensing gravity?
A. central vacuole B. Golgi appartus C. chloroplast D. amyloplast E. apical meristem
The California current carries cold water towards the equator. It is described as being slow moving and having wide, loose boundaries. What kind of current would it be classified as?
a. Eastern boundary current b. Equatorial current c. Transverse current d. Western boundary current
Which of the following hormones is involved most directly in carbohydrate absorption?
1.gastrin
2.secretin
3.cholecystokinin
4.glucose insulinotropic peptide
Sulfur dioxide is added to "must" in the production of wine to
A) improve the flavor. B) allow more control over the fermentation process. C) provide a necessary nutrient for the fermentation process. D) prevent tannins from leaching out of wood into the fermenting wine. E) both enhance flavor and promote fermentation.