Transformation, conjugation, and transduction are forms of vertical gene transfer for prokaryotes
____________________ Indicate whether the statement is true or false.
F, horizontal
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The following events are associated with muscle contraction. Which of the following best describes the order in which these events occur, following neurotransmitter release from a somatic motor neuron?
1. T tubules transmit electrical impulses throughout the muscle cell 2. myosin contacts actin and pulls it towards the center of the sarcomere 3. Acetylcholine binds to receptors on the muscle 4. Troponin-tropomyosin complex shifts to expose myosin binding sites 5. Calcium is released into the sarcoplasmic reticulum A. 4,2,1,3,5 B. 3,5,1,2,4 C. 3,5,1,4,2 D. 1,3,5,2,4 E. 3,1,5,4,2
What structure is present within a follicle?
A. vaginal cleft B. labia C. mucus-secreting glands D. oocyte E. clitoris
The theory of evolution is the single most unifying concept of biology today
Indicate whether the statement is true or false
Which of the following factors could be important in determining a species' fundamental niche? Check all that apply.
A. presence of a predator/parasite B. soil type C. seasonal temperatures D. salinity E. presence of a commensalist