If a set of genes is repressed in the presence of the controlling substance, it is referred to as ________ control.
Fill in the blank(s) with the appropriate word(s).
negative
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During photosynthesis in a leaf, sugars are loaded into the sieve tube by , followed by to move water which increases pressure.
A. osmosis; gravity B. gravity; active transport C. active transport; osmosis D. osmosis; facilitated diffusion E. facilitated diffusion; osmosis
An autosomal dominant type of colon cancer associated with microsatellite DNA instability is
________________. Fill in the blank(s) with the appropriate word(s).
Regulation in biological systems depends on feedback, which is an example of information flow. When diabetes destroys insulin-producing cells, what information flow is disrupted?
A) The body is unable to send signals that indicate the amount of sugar in the blood. B) Cells in the bladder are no longer able to send signals when the bladder fills. C) The pancreas is unable to produce enzymes to break down proteins. D) Appetite signals no longer regulate feeding.
A "naked" virus lacks (lipid/nucleic acid/protein)
What will be an ideal response?