What characteristic of a plasma membrane allows certain molecules to pass through while preventing the passage of other molecules?
What will be an ideal response?
semipermeable
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Change in a population over time is called biological evolution
Indicate whether the statement is true or false
Winogradsky columns ________.
A. are used in the process of isolating nanobacteria B. are typically used to isolate aquatic protozoa C. are used in the process of isolating aquatic viruses (virioplankton) D. are used as a model system for studying microbial interactions
Imagine that a DNA sequence of 5'-A-C-G-T-A-C-G-T-3' is altered to 5'-A-C-G-C-A-C-G-T-3'. This could happen as a result of a(n)
A) inversion. B) deletion mutation. C) insertion mutation. D) translocation. E) nucleotide substitution mutation.
Many root epidermal cells grow projections called ________, which extend from their surface and help in the absorption of water and minerals
A) rhizomes B) cilia C) root hairs D) villi E) rhizoids