AP Biology (Mader), 11th Edition

Chapter 39: Locomotion and Support Systems

Post-Test

1
Which of the following has a hydrostatic skeleton?
A)Planarians
B)Grasshopper
C)Sea star
D)Shark
2
The whiplike movement of roundworms is due to the contraction of their _____ muscles.
A)longitudinal
B)circular
C)transverse
3
All of the following characteristics describe the exoskeletons of arthropods EXCEPT:
A)Are jointed
B)Grows with the animal
C)Must be molted when the animal grows
D)Are formed of chitin
4
Strategies for decreasing the risk of osteoporosis include all of the following EXCEPT:
A)testosterone replacement therapy.
B)engage in regular physical activity.
C)obtaining sufficient Vitamin D daily.
D)consuming 1,000-1,500 mg of calcium per day.
5
An endoskeleton is observed in all of the following EXCEPT:
A)Sharks
B)Echinoderms
C)Molluscs
D)Reptiles
6
All of the following describe 'bone-forming cells' EXCEPT:
A)Are called osteoblasts
B)PTH (parathyroid hormone) promotes their activity
C)Take calcium from the blood
D)Convert cartilage 'models' to bone
7
Osteoclast activity increases _____.
A)when blood calcium is low
B)when blood calcium is high
C)due to the presence of the hormone calcitonin
8
When osteoblasts are trapped in the matrix they secrete, they _____.
A)begin to break down bone
B)are converted into osteocytes
C)weaken the bone
D)block the central canals
9
The medullary cavity (central shaft) of a long bone _____.
A)contains yellow bone marrow
B)produces red blood cells
C)stores calcium
D)contains many osteons
10
Muscle tissue:
A)is less dense than adipose tissue.
B)takes up more space than the same weight of adipose tissue.
C)consumes three times more energy than adipose tissue.
D)makes up about 20% of the average person.
11
The spinal cord passes through the _____ and becomes the brain stem.
A)fontanel
B)zygomatic arch
C)foramen magnum
D)mandible
12
The humerus articulates with the all of the following EXCEPT:
A)Scapula
B)Coxal bone
C)Radius
D)Ulna
13
Which of the following is not associated with the pelvic girdle and lower limbs?
A)Coxal bones
B)Femur
C)Clavicle
D)Fibula
14
When a muscle is stimulated, _____ ions that were stored in the sarcoplasmic reticulum are released.
A)chlorine
B)sodium
C)potassium
D)calcium
15
The H zone contains _____.
A)actin filaments only
B)myosin filaments only
C)actin and myosin filaments
16
Muscle cells rely on this chemical to anaerobically generate ATP for immediate energy needs:
A)Glucose
B)Acetylcholine
C)Myoglobin
D)Creatine phosphate
17
When calcium ions are released from the sarcoplasmic reticulum, they bind to _____.
A)actin
B)myosin
C)troponin
D)myoglobin
18
Oxygen is stored in muscle cells by _____.
A)lactate
B)actin
C)myoglobin
D)the sarcoplasmic reticulum
19
Calcium ion release is stimulated when _____ is released at a neuromuscular junction.
A)acetylcholine
B)lactate
C)epinephrine
D)myoglobin
20
Skeletal muscles are attached to the skeleton by bands of fibrous connective tissue called _____.
A)tendons
B)sarcomeres
C)ligaments
D)synovial membranes
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