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Physiology
Weeks 1-6
Question | Answer |
---|---|
Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called: | Virus |
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 |
Shivering to try to raise your body temperature back to normal would be an example of: | the body trying to maintain homeostasis. and a negative-feedback mechanism. |
What system is the least involved in homeostasis? | Reproductive |
What pathogenic organism is the most complex? | Tapeworms |
A _____ is a functional group that is temporarily unattached and is highly reactive because of unpaired electrons. | free radical |
The term glycoprotein, a combination of two words, tells you that the compound is made of _____, with _____ being the dominant component. | carbohydrate and protein; protein |
Which energy-releasing or energy-transferring molecule does not contain a nucleotide? | Creatine phosphate |
Which is true about the sodium and potassium pump? | Three sodium ions are taken out of the cell. |
During which stage of mitosis do the centrioles move to the opposite poles of the cell? | Prophase |
When the chromosomes align themselves across the equator of the spindle fibers, it is characteristic of which phase of mitosis? | Metaphase |
Twenty-three chromosomes per cell in humans is referred to as: | haploid. |
The correct order of the phases of mitosis is: | prophase, metaphase, anaphase, telophase. |
The type of tissue that contains cells called neurons is called: | nervous |
Which type of tissue has the greatest capacity to regenerate? | Which type of tissue has the greatest capacity to regenerate? |
Which type of connective tissue helps newborns maintain body temperature by producing heat? | Brown fat |
Which cells help destroy pathogens and damaged tissue in the brain? | Microglia |
Basement membrane is composed of molecules made by _____ tissue. | connective and epithelial |
A tissue is: | a group of similar cells that perform a common function. |
Which tissue is most likely to form a keloid scar as it heals? | Connective |
Small cells that synthesize and secrete a specialized organic matrix are | osteoblasts |
During childbirth, a baby passes through an imaginary plane called the: | pelvic outlet |
A condition that is caused by an abnormally increased roundness in the thoracic curvature is | kyphosis. |
The cells responsible for active erosion of bone minerals are called: | osteoclasts. |
Blood calcium levels involve secretion of which two hormones? | parathyroid and calcitonin |
Muscle contractions will continue as long as | the calcium ions are attached to the troponin. |
The protein molecule that has heads jutting out for cross-bridging is: | myosin |
The first event to occur in muscle relaxation is that: | the sarcoplasmic reticulum begins actively pumping calcium back into its sacs |
Which type of joint joins the two pubic bones together? | Symphysis |
After it is released from the sarcoplasmic reticulum, the calcium combines with which protein? | Troponin |
Thick myofilaments extend the length of the | A-band. |
Three phases of the twitch contraction are the | latent period, contraction phase, and relaxation phase. |
White fibers are also called _____ fibers. | fast |
Attempting to pick up an object too heavy to lift would result in which type of muscle contraction? | Isometric |
Glucose can be stored in the muscle as | glycogen. |