Which of the following is paired incorrectly?
A. plants; cellulose cell wall
B. algae; chitin
C. bacteria; peptidoglycan cell wall
D. fungi; polysaccharide cell wall
E. archaea; protein cell wall
Answer: B
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Discuss the concept and consequences of built-in redundancy as it applies to amino acid sequences, and include an example
What will be an ideal response?
Similar to the stomach, the inner layer of the urinary bladder wall has deep folds called ______ that disappear as the bladder fills
Fill in the blank(s) with correct word
Any of these events may occur in diseases transmitted by vectors except ________.
A) In biological transmission, a vector transmits pathogens by defecating while taking a blood meal. B) In mechanical transmission, insects contact feces containing pathogenic bacteria and transfer it to food. C) In biological transmission, vectors can spread pathogens by vomiting. D) In biological transmission, pathogens multiply in the vector, which can transmit the pathogens by injecting saliva directly into the host. E) In biological transmission, the vector multiplies in the human host.
How might the allele that causes a disease stay in the population if it is fatal to those who have the disease?
a. it occurs only in certain geographic areas b. it disappears but is continuously replaced by mutations c. it is present only in heterozygotes d. it makes the heterozygote resistant to a fatal disease