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ErynL midterm physio
ch 1-6 physio midterm study stack nightingale
| To accomplish self-regulation, a highly complex and integrated communication control system or network is required. This type of network is called a | feedback control loop |
| Which level of control operates at the cell level, often using genes and enzymes to regulate cell function? | intracellular regulation |
| Effectors can be described as | organs that directly influence controlled physiological variables |
| What term describes a signal traveling toward a particular center or point of reference? | afferent |
| The concept that information may flow ahead to another process to trigger a change in anticipation of an event that will follow is called | feed-forward |
| Extrinsic control usually involves which mode of regulation? | nervous endocrine |
| Processes for maintaining or restoring homeostasis are known as | homeostatic control mechanisms |
| Local control or _____, intrinsic mechanisms often make use of chemical signals | autoregulation |
| The relatively constant state maintained by the body is known as | homeostasis |
| normal reading or range is called the | set point |
| The body naturally changes some set points to different values at different times of the day. These daily cyles are called | circadian cycles. |
| What term is often used to describe certain arrangements of atoms attached to the carbon core of many organic molecules? | functional group |
| A triglyceride is composed of a glycerol molecule and three of the same type of fatty acid. | true |
| Which of the following is polymer of glucose that is sometimes referred to as animal starch? | Glycogen |
| What determines how a protein performs? | shape |
| DNA and RNA are important because | they are information molecules |
| A saturated fatty acid is one in which | all available bonds of its hydrocarbon chain are filled. |
| A very large molecule composed of subunits of sugar, a nitrogen base, and a phosphate bond is a | nucleic acid |
| The carbon-containing molecules formed by living things are often called | organic molecules. |
| Chaperone proteins assist in the proper folding of other proteins so they can have the correct functional shape | true |
| Which term means “water loving” and applies to the phospholipid head? | hydrophilic |
| Any large molecule made up of many identical small molecules is called a | polymer |
| Osmosis can be defined as | the net movement of water molecules from a region of lower solute concentration to a region of higher solute concentration |
| The total number of 46 chromosomes per cell is referred to as _________ number. | diploid |
| In the DNA molecule, a sequence of three base pairs forms a | codon |
| Red blood cells are placed in an unknown solution. After 45 minutes, the cells are examined and determined to have decreased in size. The unknown solution is | hypertonic |
| The component that distinguishes one nucleotide from another | nitrogen base |
| Replication of DNA occurs in which phase of interphase? | S phase |
| Mitosis is subdivided into four phases | prophase, anaphase, metaphase, telophase. |
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