Eukaryotic chromosomes are composed of a complex of 60% protein and 40% DNA. This complex is referred to as:
A. The histone complex
B. Chromatin
C. The kinetochore
D. Cohesin
B. Chromatin
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Sodium concentrations are higher outside and glucose concentrations are higher inside the cell. Using the same membrane protein for Na+ and glucose transport, what is it called when a Na+ electrochemical gradient is used to drive glucose transport into the cell against its concentration gradient?
A. primary active transport B. secondary active transport C. primary facilitated diffusion D. secondary facilitated diffusion E. passive diffusion
Respond to statements 166–169 in reference to the autonomic
nervous system associated with the five regions of the human spinal cord listed below. a. cervical b. thoracic c. lumbar d. sacral e. coccygeal D 166. Sympathetic nerves from this region innervate the bladder, uterus, and genitals. D 167. Sympathetic nerves from this region innervate the kidney. D 168. Parasympathetic nerves from this region innervate the rectum. D 169. Sympathetic nerves from this region innervate the heart.
Develop a scenario different from that in the book that demonstrates a survival benefit of each of the
following types of learning: classical conditioning, operant conditioning habituation, imprinting, and insight. What will be an ideal response?
Most scientists agree that global warming is underway; thus, it is important to know how plants respond to heat stress. Which of the following would be a useful line of inquiry to try and improve plant response and survival to heat stress?
A) the production of heat-stable carbohydrates B) increased production of heat-shock proteins C) the opening of stomata to increase evaporational heat loss D) protoplast fusion experiments with xerophytic plants