Threadlike fungal filaments are called
A) mycelia.
B) hyphae.
C) vascular bundles.
D) mold.
Answer: B
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Which of the following is a disadvantage to expressing genes in E. coli?
A. Bacteria containing recombinant genes rarely will grow in commercial fermenters. B. Some eukaryotic proteins will not fold properly when expressed in E. coli. C. Efficient methods exist for transforming DNA into the bacteria but not for extracting DNA. D. The regulatory sequences that govern gene expression are not well understood and rarely express cloned genes at high levels. E. Host bacteria are difficult and expensive to grow.
Which of the following is the purpose of exocytosis?
a. Moving material out of a cell b. Transporting particles into a cell c. Forming intracellular vacuoles d. Obtaining solutes from extracellular fluid
In a reflex arc, where does the synapse between a sensory neuron and a motor neuron occur?
a. in the brain b. between the receptor and the spinal cord c. within a muscle d. within the spinal cord e. in the nerve leading to the spinal cord
Experiments with bacteria and ____________________ offered solid evidence that deoxyribonucleic acid (DNA), not
protein, is the hereditary material.
Fill in the blank(s) with the appropriate word(s).