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Rebecca Datilus
Question | Answer |
---|---|
which of the following may put one at risk for developing a given disease | a)Environment b)stress c)lifestyle→ d)All Of The Above← |
Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called | Viruses |
If the secretion of during childbirth operated as a negative feedback - control loop. what effect would it have on uterine contractions | Oxytocin would inhibit uterine contractions |
Positive feedback control systems | Accelerate a change |
Negative feedback mechanisms | Minimize change in blood glucose levels, maintain homeostasis, are responsible for an increase rate of sweating , when air temperature is higher than body temperature . ALL OF THE ABOVE ARE CORRECT.✓ |
The term that literally means self imunity is | Autoimmunity |
The body’s thermostat is located | Hypothalamus |
Of the 11 major body systems, which is the least involved in maintaining homeostasis? | © Reproductive |
Epidemiology is the study of the human populations. __ of diseases in | • occurrence O distribution • transmission ☞All of the above are correct✓ |
Which of the following is a protein substance with no DNA or RNA and is thought to be the cause of mad cow disease? | Prion |
Peptide bonds join together molecules of: | Amino acids |
Which energy-releasing or energy-transferring molecule does not contain a nucleotide? | Creatine phosphate |
Which of the following is not true of carbohydrates? | • They include substances commonly called sugars. O They are the body's primary source of energy. • They are a part of both DNA and RNA. © ✓All of the above are true of carbohydrates.✓ |
Amino acids frequently become joined by | Peptide bonds |
Which of the following is not true of both triglycerides and phospholipids? | They both contain a hydrophobic and hydrophilic end. |
A structural lipid found in the cell membrane is a: | • triglyceride. • phospholipid. • steroid. • ☆Both B and C are correct.✓ |
The formation of sucrose involves the removal of a molecule of water. This is called: | Dehydration synthesis |
Humans can synthesize 13 of 21 basic amino acids; the remaining 8, whith must be included in the diet, are called: | Essential Amino acids |
Which lipid is part of vitamin D? | Steroid |
Prostaglandins and steroids share which of the following characteristics? | Both have a ring structure in their molecule. |
What is the most important factor in determining the physical and chemical properties of fatty acids? | Degree of situation |
Which of the following is not true of RNA? | • It contains ribose sugar. O it contains adenine It is composed of smaller molecules called nucleotides. ⭐︎All of the above are true of RNA✓ |
Which lipid acts as a "tissue hormone"? | Prostaglandin |
The roles played by proteins can be divided into which categories? | Structural and functional |
The alpha helix is an example of which level of protein structure? | Secondary |
Transcription can be best described as the: | Synthesis of mRNA. |
During which stage of mitosis do the centrioles move to the opposite poles of the cell? | Prophase |
NaCI would move through the cell membrane in which direction? | Both into and out of the cell |
Phagocytosis is an example of: | Endocytosis |
If a sequence of nitrogen bases in nucleic acid were A-U-C-G-A, which of the following would be true about the nucleic acid? | It contains ribose sugar. |
Which of the following terms is synonymous with tumor? | Neoplasm |
Materials can be moved from a low concentration to a high concentration through: | Active transport |
The small water channels in the cell membrane are called: | aquaporis |
Diffusion of particles through a membrane by means of a carrier molecule is called: | facilitated diffusion. |
The correct order of the phases of mitosis is: | prophase, metaphase, anaphase, telophase. |
A DNA molecule is characterized by all of the following except: | Ribose |
Which is not true about the sodium and potassium pump? | Sodium moves into the cell, potassium moves out of the cell |
Twenty-three chromosomes per cell in humans is referred to as: | Haploid |
An individual's entire set of DNA can be referred to as a: | Genomes |
Water will move through the cell membrane by: | Osmosis |
Mucous membranes are important because they lubricate and protect passageways. | True |
Which of the following is not a function of adipose tissue? | Defends the body from microbes and injurious substances |
The type of tissue that contains cells called neurons is called: | Nervous |
Connective tissue forms from stem cell tissue called: | Mesenchyme |
Hematopoietic tissue can be found in the: | Bones |
A tissue is: | A group of similar cells that perform a common function. |
Which of the following is not a characteristic of epithelial tissue? | Is important in communication |
Which of the following is not a characteristic of muscle tissue? | Cells are separated by a large quantity of extracellular matrix |
Which tissue is most likely to form a keloid scar as it heals? | connective tissue |
Which cells form the blood-brain barrier that protects the brain from harmful substances in the blood? | Astrocytes |
The cells responsible for active erosion of bone minerals are called: | Osteoclasts |
Which of the following may cause skeletal variations? | Inadequate suprAy of calcium and vitamin D O Mechanical stress O Age © ✯All of the above ✓ |
The following are Functions of bone except for | support. • protection. • mineral storage, • hematopolesis. ✭ All of the above are functions of the bone✓ |
Which of the following is not one of the primary funstions performed by bones? | Hormonal production |
A condition that is caused by an abnormally increased roundness in the thoracic curvature is | Kyphosis’ |
Which of the following is not dependent on the proper amount of calcium ions in the blood? | • Blood clotting O Transmission of nerve impulses O Contraction of cardiac muscle © ★All of the above are dependent on the proper amount of calcium ions in the blood✓ |
Because of how the clavicle articulates with the scapula, all shoulder movements involve the sternoclavicular joint. | True |
When the knee is flexed, the patella can be easily distinguished. | False |
Bones grow in diameter by the combined action of which two of the three bone cell types? | Osteoblast and osteoclasts |
The primary ossification center of a long bone is located: | In the diaphysis |
Which of the following is not a characteristic of the diaphysis | Provide a bulbous shape for attachment of muscle |
In bone growth the medullary cavity is enlarge because of activity of | Osteoclasts |
Which structure are unique to the fetal skull and provide additional space for molding the head shape as the passes through the birth canal | Fontanels |
The humerus articulates proximally with the | Scapula |
As the activity of osteoblasts increases , the | Amount of calcium in the bones increases and the amount of calcium in the blood decreases |
An example of a pivote joint is the | Head of riadius articulating with the ulna |
Which joint allows for a unique movement called opposition | Saddle |
An example of a hinge joint is the | Interphalanges joint |
A contraction in which the muscle remains the same but the lenght changes is called -------contraction | Isotonic |
In the structure called the triad, the tibule is sandwiched between | Sacs or sarcoplasmic recticulum |
Muscles contraction will continue as long as | The calcium ions are attached to the troponin |
Which structure functions to temporarily store cacium ions | Sarcoplasmic reticulum |
Moving the party part away from the medial plane of the body is called | Abduction |
What are the most movable joint in the body | Synovial |
Which of the following is nota part of neuromuscular junction | T-tibules |
Which of the following statements about cardiac muscle is incorrect? | Cardiac muscle requires nervous stimulation to contract |
Which of the following terms descrikes an isometric contraction? | Static tension |
Thick myofilaments extend the length of the: | A-band |
Attempting to pick up an object too heavy to lift would result in which type of muscle contraction? | Isometric |
Which of the following proteins found in myofilaments contains the cross-bridges? | Myosin |
No impulse can be sent through a neuron: | During the absolute refractory period |
Serotonin is an example of a(n): | Amine neurotransmitter |
When an impulse reaches a synapse: | Chemical transmitter are released |
Acetylcholine is in the same class of neurotransmitters as | Serotonin, histamine, dopamine, ★None of the above ✓ |
A slight shift away from the resting membrane potentials in a specific region of the plasma membrane is called a potential. | Local |
Which of the following is true of spatial summation? | Neurotransmitters released simultaneously from several presynaptic knobs converge on one postsynaptic neuron |
Within the nervous system, coding for the strength of a stimulus is accomplished through: | The frequency of nerve impulses |
Excitatory neurotransmitters are most likely to: | Initiate an action potential |
Compared with the outside of the neuron, the inside has a(n)-------charge. | Negative |
For a neurotransmitter to produce ah inhibitory postsynaptic potential, which of the following channe's must open? | Potassium and or chloride channels |
Dopamine, epinephrine, and norepinephrine are classified as: | Catecholamine |
Severe depression can be caused by a deficit in certain brain synapses of: | Amines |
The first event to occur when an adequate stimulus is applied to a neuron is | Some of the sodium channels at the point of stimulation open. |
Which of the following statements about amino acid neurotransmitters is incorrect? | They are among the most common neurotransmitters in the central nervous system Glycine is a widely distributed inhibitory neurotransmitter in the spinal cord.(CNS). ★They are all inhibitory neurotransmitters✓ |
Propranolol is an example of a: | beta blocker. drug used to treat irregular heartbeats. drug used to treat hypertension. ★All of the above are correct✓ |
Which of the following antidepressants acts by blocking the action of monoamine oxidase (MAO)? | Phenelzine |
How does a dually innervated autonomic effector differ from a singly innervated autonomic effector? | A dually innervated effector receives input from both sympathetic and parasympathetic pathways. A singly Innervated autonomic effector receives Input from only the sympathetic division. |
Once inside the sympathetic chain ganglion, the preganglionic fiber may: | synapse with a sympathetic postganglionic neuron. send ascending and/or descending branches through the sympathetic trunk to synapse with postganglionic neurons in other chain sanslia.pass through one or more ganglia without synapsing. ★Do all of the ab |
The preganglionic neurons of both the sympathetic and the parasympathetic divisions are cholinergic. | True |
Damage to the diaphragm unable to function. nerve could make the | Phrenic |