Which of the following cellular stains is considered a differential stain?
A) Methylene blue
B) Crystal violet
C) Gram stain
D) India ink
C) Gram stain
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________ will take calcium from the blood, whereas ________ will deposit calcium into the blood.
A. Osteocytes; osteoblasts B. Osteoblasts, osteocytes C. Osteoblasts; osteoclasts D. Osteoclasts; osteoblasts E. Osteocytes; osteoclasts
________ lakes are nutrient-rich and tend to have large populations of algae.
A. Eutrophic B. Temperate C. Stratified D. Oligotrophic
Answer the following questions true (T) or false (F)
1. Canned foods are prepared using the same temperature as is used for autoclaving. 2. Through recombinant DNA technology, many plants now can manufacture their own Bt toxin, which improves fermentation. 3. Reducing the water content of food is a highly effective way of reducing food spoilage.
The first true vaccine protected against disease caused by a(n) ________ pathogen
A) bacterial B) protozoal C) fungal D) viral E) archaeal