The morphology of this pollen grain indicates that it was made by a(n)

1.fern
2.magnoliid
3.monocot
4.eudicot
4

Biology & Microbiology

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Which of the following molecules is MISMATCHED with its source?

a. interferons ? virus-infected cells b. histamine ? mast cells c. lysozyme ? epithelial cells d. immunoglobulin ? B cells e. interleukins ? cytotoxic T cells

Biology & Microbiology

Saturated fats have long, straight tails of fatty acids and can clump tightly together in cells and animal bodies. Unsaturated fats have kinks in their tails due to double bonds, which prevent them from packing together as tightly. Animals that are ectotherms (their body temperature fluctuates with the environment) need to keep their membranes fluid at cooler temperature and thus use in their membranes.

A. mostly unsaturated fats B. mostly saturated fats C. equal amounts of saturated and unsaturated fats D. carbohydrates E. proteins

Biology & Microbiology

Post-exposure vaccination is effective in reducing or preventing disease from variola infection

Indicate whether the statement is true or false

Biology & Microbiology

Which of the following human genetic conditions is missing a chromosome?

A) XXXX syndrome B) Down's syndrome C) Turner syndrome D) Jacob syndrome E) Klinefelter syndrome

Biology & Microbiology