Which of the following vitamins is an essential nutrient in humans that cannot be synthesized by intestinal bacteria?
A) Biotin
B) Vitamin B5 (pantothenic acid)
C) Vitamin C (ascorbic acid)
D) Folic acid
E) Vitamin K
C
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Which of the following organisms is an endotherm?
a. mouse b. salamander c. turtle d. frog e. snake
Maternal effects are cases of extrachromosomal inheritance in which the genotype of the mother influences the phenotype of her immediate offspring in a non-Mendelian manner. Provide a rationale for the molecular basis of a maternal effect
What will be an ideal response?
A negative feedback system has four steps. Please choose the answer that lists the steps in the correct order.
A. Sensory receptors, stimulus, brain, effectors B. Stimulus, sensory receptors, brain, effectors C. Effectors, brain, sensory receptors, stimulus D. Brain, effectors, sensory receptors, stimulus E. Stimulus, effectors, sensory effectors, brain
All types of radiation are used for microscopy
Indicate whether the statement is true or false