Elaine Marieb , Katja Hoehn 9780135168042 ALL Chapters .
1. The band composed only of thin myofilaments.
A) H-Zone
B) I-Band
C) Z-Line
D) A-Band - ANSWER: B
The disease in children called "rickets" is known as ________ in an adult.
A) osteoporosis
B) osteomyelitis
C) osteonecrosis
D) osteomalacia E) osteoma - ANSWER: D
Which statement about enzymes is false?
A) Enzymes raise the Activation Energy needed to start a reaction.
B) Enzymes are composed mostly of proteins.
C) Enzymes are Organic Catalysts.
D) Enzymes may be damaged by high temperature. - ANSWER: A
One functional unit of a skeletal muscle is:
A) a sarcomere.
B) the myofilaments.
C) the myofibrils
D) the sarcoplasmic reticulum. - ANSWER: A
The pancreas and liver work together to maintain homeostasis through:
A) negative feedback.
B) neither positive nor negative feedback.
C) both negative and positive feedback.
D) positive feedback. - ANSWER: A
The functions of centrioles include:
A) organizing the mitotic spindle in cell division.
B) providing a whiplike beating motion to move substances along cell surfaces. C) serving as the site
for ribosomal RNA synthesis.
D) producing ATP. - ANSWER: ..A
Which of the following is not a usual result of exercise?
A) increase in the efficiency of the circulatory system
B) increase in the number of myofibrils within the muscle cells C) increase in the efficiency of the
respiratory system
D) increase in the number of muscle cells - ANSWER: D
The vital centers for the control of heart rate, respiration and blood pressure are located in the:
A) pons.
B) medulla.
C) midbrain.
D) cerebrum. - ANSWER: B
In bone formation, a deficiency of growth hormone will cause:
A) inadequate calcification of bone.
B) decreased osteoclasts activity.
, C) increased osteoclasts activity.
D) decreased proliferation of the epiphyseal plate cartilage. - ANSWER: D
Atom X has seventeen protons. How many electrons are in its valence shell?
A) 5
B) 7
C) 3
D) 10 - ANSWER: B
The numbers listed represent the first, second and third energy levels, respectively. On this basis,
which of the following is an unstable or reactive atom?
A) 2, 8, 8
B) 2, 8, 1
C) 2, 8
D) 2 - ANSWER: B
Which statement is not true concerning characteristics of life?
A) Reproduction occurs on both the cellular level and the organismal level.
B) All body cells exhibit irritability to some extent.
C) Each organ system is isolated from all other body system.
D) Growth can be an increase in size due to an increase in the number of cells. - ANSWER: C
Which of the following is a principle of the fluid mosaic model of cell membrane structure?
A) Phospholipids form a bilayer that is largely impermeable to water-soluble molecules.
B) Phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chains.
C) The lipid bilayer is a solid at body temperature, thus protecting the cell.
D) All proteins associated with the cell membrane are contained in a fluid layer on the
outside of the cell. - ANSWER: A
The membrane lining the medullary canal is the:
A) endochondrium.
B) periosteum.
C) perichondrium.
D) intraosteum.
E) endosteum. - ANSWER: E
All of the following are structures of the limbic system except:
A) hippocampus.
B) cingulate gyrus.
C) amygdaloid nucleus.
D) caudate nucleus. - ANSWER: D
Which of these would you not find in the cerebral cortex?
A) cell bodies
B) dendrites
C) unmyelinated axons
D) fiber tracts - ANSWER: D
Which one of the following planes would result in sections containing both of the lungs and the
heart? (Note: It could contain parts of both lungs and the heart.) 1. Coronal (=Frontal), 2. Transverse.
3. Saggital
A) 1 only
B) 1 & 2
C) 1,2,&3
D) 2 only
E) 3 only - ANSWER: B