Answer the following statements true (T) or false (F)
1. The internal structure of procaryotic flagella is the same as the internal structure of eucaryotic flagella.
2. The internal structure of eucaryotic cilia is the same as the internal structure of eucaryotic flagella.
3. The production of endospores by bacteria is a reproductive mechanism.
4. Bacteria never have cilia and eucaryotic cells never have pili.
5. The 3-Domain System of classification is based on differences in the structure of transfer RNA (tRNA) molecules.
1. FALSE
2. TRUE
3. FALSE
4. TRUE
5. FALSE
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Which hormone has a role in both feelings of well-being and in social stress responses in both sexes?
a. oxytocin b. endorphins c. insulin-like growth factors d. epinephrine e. norepinephrine
During DNA replication, the lagging strand is synthesized by forming Okazaki fragments. The enzyme that joins Okazaki fragments together is
A. ligase. B. primase. C. DNA polymerase. D. ATP synthase. E. helicase.
The "skeleton" of a typical sponge is composed of
a. bones. b. cartilages. c. spicules. d. scales.
New ____ mutations can often be detected by examining the inheritance of the trait in males
a. mitochondrial b. imprinting c. autosomal dominant d. autosomal recessive e. X-linke