What does it mean when we say a gene is "turned off"?
A. The gene cannot be transcribed and translated into a protein.
B. The gene is no longer working properly.
C. The gene is now activated.
D. The gene has a mutation.
Answer: A
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Match the following nerve locations or functions with the correct division of the autonomic nervous system (sympathetic or parasympathetic) by writing an "S" or "P" next to the phrase
______ accelerate heart rate ______ decrease heart rate ______ dilate pupil ______ constrict pupil ______ stimulate activity of stomach and intestines ______ inhibit activity of stomach and intestines ______ relaxes lung bronchi ______ constricts lung bronchi ______ nerves branch from middle region of the spinal cord ______ nerves branch from the brain and the posterior region of spinal cord What will be an ideal response?
A typical amniote has ____, but fish do not
a. a backbone b. waterproof skin c. gills d. external fertilization e. a cartilaginous skeleton
Roots that arise from branches or vertical stems, and that are used to support a plant in an upright
position, are referred to as: a. prop roots. b. contractile roots. c. pneumatophores. d. lateral roots. e. tap roots
Rice water' diarrhoea is associated with infection with which of the following bacteria?
A. Vibrio cholerae B. Vibrio parahaemolyticus C. Vibrio alginolyticus D. Vibrio vulnificus