Which of the following scenarios will result in increased levels of tension in a muscle fiber: 1. Recruiting greater numbers of Type I motor units. 2. Lengthening the sarcomere so that few cross-bridges can form. 3. Evoking motor neuron action potentials in intervals of 200 msec. 4. Recruiting greater numbers of Type I motor units. 5. Recruiting Type IIB motor units.

Which of the following statements is true? a. there are more chromosomes in an organism than there are genes. b. there are more genes in an organism that there are chemical bases. c. dna is made of sugar, phosphate, and carbon. d. genes are found in specific locations on a chromosome.

How are fungi more like an animal? they have a cell wall. they are heterotrophs that absorb their food. they produce seeds and have membrane-bound nucleus. they use sunlight for photosynthesis.

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.