3. One type of muscle contraction results in a stabilizing force. This:
A. Enables us to stand and sit upright
B. Means it helps us to lift heavy things
C. Makes the muscle very tense

What advantage does a crop that undergoes vegetative reproduction have over plants that start from the seed? 1points a they store nutrients. b they can travel farther. c they experience more genetic variation. d they only occur in high-resource environments.

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

Which enzyme is responsible for “unzipping" the dna by breaking the hydrogen bonds between the nucleotides?