The freshwater leech is an organism that feeds off of the blood of other organisms such as frogs and turtles. Which interaction describes the relationship between freshwater leeches and frogs or turtles?
A) herbivory
B) predation
C) mutualism
D) parasitism
Answer: D
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An allele that is present but unexpressed is
A. codominant. B. dominant. C. pleiotropic. D. epistatic. E. recessive.
Match the following items with the correct phrases.
_______1. In ____________________, bacteria acquire new genetic information in the form of viral genes. _______2. Oswald Avery and his colleagues discovered that DNA is the hereditary molecule while performing ____________________ experiments with Streptococcus pneumoniae. _______3. In ____________________, bacteria acquire new genetic information as a result of absorbing pieces of naked DNA from their environment. _______4. In ____________________, genetic information is passed from one bacterial cell to another via a hollow sex pilus. _______5. In ____________________, bacteria acquire new genetic information when bacteriophages inject bacterial genes. a. conjugation b. lysogenic conversion c. mutation d. transduction e. transformation
Chromosomes are composed of two chromatids during
A. gap 1. B. telophase. C. metaphase. D. anaphase.
In 2012, a new kind of fungal meningitis (infection of the nervous system) was discovered. Disease occurred among patients who had received steroid injections in the spine. Discuss whether these were healthcare-associated infections (HAIs): defend your answer. Discuss the route of transmission and what measures public health agencies could take to reduce disease
What will be an ideal response?