Recent studies on plants with mutations in certain cytokinin receptors show that these plants have strongly enhanced root systems. These data suggest that while cytokinins have a positive role in shoot growth, they may actually work to inhibit root growth. Do you think these mutant plants could still be used in plant tissue culture?
A. Yes, but they may develop bigger roots.
B. No, because they can't form a callus.
C. Yes, but they may have smaller roots.
D. No, because they won't be able to respond to auxin.
A. Yes, but they may develop bigger roots.
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Answer the following statements true (T) or false (F)
1. Rivets hold steel structures together much in the same way as tight junctions hold cells together. 2. Integrin is a membrane protein that integrates changes in the ECM to alterations in movement or behavior of the cell. 3. Unlike animals, plants lack a cell junction where small molecules can move from one cell to another cell. 4. The heart, skeletal muscles, and blood vessels all share a common feature in that they are composed of muscle tissue. 5. The most prominent tissue type present in plants is the dermis.
Superweeds result from
A. cross-pollination of cultivated and non-cultivated plants in the field. B. cross-pollination of cultivated and non-cultivated plants in the laboratory. C. cross-pollination of two cultivated plants in the field. D. cross-pollination of two cultivated plants in the lab. E. cross-pollination of two non-cultivated plants in the field.
Based on which of the following pieces of evidence about the transforming agent did Avery conclude that DNA is the hereditary material?
A. In an ultracentrifuge, the material migrated like DNA. B. The purified material had the same elements as DNA. C. The material was destroyed by DNA-digesting enzymes. D. The material was not destroyed by protein-digesting enzymes. E. All of the choices are correct.
The adrenal glands consist of an inner adrenal --------and the outer adrenal--------.
Fill in the blank(s) with the appropriate word.