What would a person born without an epiglottis not be able to do?
A) digest fats
B) digest proteins
C) absorb the products of digestion
D) swallow food without a high risk of choking
D
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LHON is a mitochondrial disease caused by weak hypomorphic mutations that affect the mitochondrial electron transport chain. Among the first symptoms of the disease is blindness. People with LHON are usually homoplasmic because retinas must be homoplasmic mutant for a person to have disease symptoms. Which is true about a female who is heteroplasmic for the mutation that causes LHON? (Select all that apply.)
A) She may have children who are blind due to LHON. B) Some cells in her body are probably homoplasmic. C) She is likely to develop the disease in other parts of her body. D) All of her children will be homoplasmic for the wild-type mitochondria.
In knockout experiments,
a. genes are added to chromosomes. b. normal genes are replaced physically by mutated genes. c. genes are mutated or deleted to prevent their transcription or translation. d. mRNAs are prevented from attaching to ribosomes. e. the protein products of specific genes are inactivated.
Acts to protect Canadian geese were put into
effect in the a. 1700s. b. 1800s. c. early 1900s. d. late 1900s. e. 2000s.
Vertigo is a medical term used to describe feeling dizzy, as if everything is spinning. As it can severely compromise an individual's ability to walk or stand still properly, vertigo most likely indicates a problem with the person's
A) eardrum. B) auditory canal. C) pinna. D) inner ear.