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SCI221 Assignment 1
Study materials for weeks 1 through 6
| Question | Answer |
|---|---|
| Intrinsic control: | is sometimes called autoregulation |
| The normal reading or range of normal is called the: | set point |
| Of the 11 major body systems, which is the least involved in maintaining homeostasis? | reproductive system |
| Which of the following is not one of the basic components in a feedback control loop? | transmitter |
| Homeostasis can best be described as: | a state of relative constancy |
| Which of the following may put one at risk for developing a given disease? | ESL - environment, stress, and lifestyle |
| Positive-feedback control systems: | accelerate a change |
| Negative-feedback control systems: | oppose a change |
| The formation of sucrose involves the removal of a molecule of water. This is called: | dehydration synthesis |
| Peptide bonds join together molecules of: | amino acids |
| A _____ is a functional group that is temporarily unattached and is highly reactive because of unpaired electrons. | free radical |
| Which of the following is not one of the major groups of organic substances in the human body? | salts |
| All of the following substances are organic EXCEPT: | electrolytes |
| If one side of a DNA molecule is CTAGGCTG, the other side would be: | GATCCGAC |
| A structural lipid found in the cell membrane is a: | phospholipid and steroid |
| Which level of protein structure refers to the number, kind, and sequence of amino acids? | primary |
| Diffusion of particles through a membrane by means of a carrier molecule is called: | facilitated diffusion |
| A saline solution that contains a higher concentration of salt than a red blood cell would be: | hypertonic |
| A membrane carrier structure attracts a solute to a binding site, changes shape, and releases the solute on the other side of the cell membrane. This describes the process of: | carrier-mediated transport |
| The small water channels in the cell membrane are called: | aquaporins |
| Which is true about the sodium and potassium pump? | (3) three sodium ions are taken out of the cell |
| Which of the following is NOT true of diffusion? | uses cellular energy |
| During which stage of mitosis do the centrioles move to the opposite poles of the cell? | prophase |
| Twenty-three (23) chromosomes per cell in humans is referred to as: | haploid |
| Which cells form the blood-brain barrier that protects the brain from harmful substances in the blood? | microglia |
| Which tissue is most likely to form a keloid scar as it heals? | connective |
| Areolar tissue usually contains which types of cells in the greatest number? | fibroblasts |
| Which of the following is not a characteristic of skeletal muscles? | having one nucleus per cell |
| Which of the following is not a function of adipose tissue? | defends the body from microbes and injurious substances |
| Which is not a function of epithelial tissue? | assimilation |
| A tissue is: | a group of similar cells that perform a common function |
| Of the five epidermal cell layers, the only one that can undergo mitosis is the stratum: | basale |
| The cells responsible for active erosion of bone minerals are called: | osteoclasts |
| The humerus articulates proximally with the | scapula |
| Hematopoiesis is carried out in the: | red bone marrow |
| In the epiphyseal plate, the zone of hypertrophy is in the _____ layer. | third (3rd) layer |
| Bones grow in diameter by the combined action of which two of the three bone cell types? | osteoblasts and osteoclasts |
| The cell organelles that synthesize organic matrix substances in bone formation are: | endoplasmic reticulum and Golgi apparatus |
| Which structures are unique to the fetal skull and provide additional space for molding the head shape as the baby passes through the birth canal? | fontanels |
| Normally, bone loss will begin to exceed bone gain between the ages of _____ years. | 35 and 40 |
| Most body movements are _____ contractions. | isotonic |
| An example of a pivot joint is(are) the: | head of the radius articulating with the ulna |
| Muscle contractions will continue as long as: | the calcium ions are attached to the troponin |
| The chief function of the T-tubules is to: | allow for electrical signals to move deeper into the cell |
| The largest and most frequently injured joint is the: | knee |
| Which of the following is not a part of the neuromuscular junction? | T-tubules |
| Cross-bridges are also called: | myosin heads |
| What are the most movable joints in the body? | synovial |
Created by:
mstiffblack
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