Easy
Name the 3 types of muscular tissue.
Smooth muscle, skeletal muscle, cardiac muscle
The locomotion system equals what two systems together?
Skeletal system + muscular system
What does the sequence of nucleotides in DNA determine?
Genetic information (codes for traits)
Name the 2 types of nucleic acids.
DNA and RNA
DNA is a polymer. What are its monomers called?
Nucleotides
Classify and explain: running vs sitting at a computer (dynamic or static?)
Running = dynamic (movement, contraction + relaxation); Sitting = static (holding position, muscles stay contracted)
Give an example of antagonistic muscles in the arm.
Biceps and triceps
Name the 3 parts of a nucleotide.
Sugar, phosphate group, nitrogenous base
In DNA: A = 220, C = 125. Find T, G, and total nucleotides.
T = 220, G = 125, Total = 220 + 220 + 125 + 125 = 690
In DNA, A pairs with ___ and C pairs with ___.
A-T, C-G
What causes a muscle fiber to contract?
It is stimulated by a nerve impulse from a motor neuron
In DNA: C = 140, total nucleotides = 1000. Find G, A, T.
G = 140; A + T = 1000 - (140 + 140) = 720; A = 360, T = 360
What is the difference between dynamic and static muscle work?
Dynamic = movement with contraction and relaxation; Static = holding position with no movement (muscle stays contracted)
Write the complementary strand for: 5’ CGGTCATTT 3’
3’ GCCAGTAAA 5’ (equivalently: 5’ AAATGACCG 3’)
Scenario: A student holds a heavy book still for 1 minute, then does 10 bicep curls. For each activity: say static or dynamic, name the antagonistic pair, and describe what happens during curls.
Holding book = static; Curls = dynamic; Pair = biceps and triceps; During curls biceps contracts while triceps relaxes (movement with alternating contraction/relaxation, increases blood circulation)