Ch 3 Flashcards
____ is the basic unit of life
Cell
The study of cells is ____
Cytology
_____ a magnifying instrument that allowed them for the first to examine structures not visible to the naked eye
Microscope
The outer layer of the cell is the ___
Plasma membrane
_____ membrane participates in many cellular activities such as growth, reproduction, and communication between cells and especially important in regulating what can enter and leave the cell
The plasma membrane
The plasma membrane of these cells is often folded into multiple small projections called
Microvilli
Microvilli is located in the ____ & ____
Small intestine & kidney cells
Lipids contain the element phosphorus they are called
Phospholipids
_____ is found in the plasma membrane
Cholesterol
_____ pores in the membrane that allow specific substances to enter or leave.
Channels
______ shuttle substances from one side of the membrane to the other. They change shape during transport. Glucose is carried into cells using these
Transporter
_____ specialized proteins that mediate that effects of chemical signals on cells: chemicals such as hormones and neurotransmitters
Receptors
_______ participates in reactions occurring at the plasma membrane
Enzymes
______ cells contains specialized structures that perform different tasks called
Organelles
The largest of the organelles is the
Nucleus
______ participate in reactions occurring at the plasma membrane
Enzymes
______ link to the other proteins within the cell to stabilize the membrane and link to the membrane proteins of other cells to attach cells together
Linkers
_____ _____ _____ are proteins unique to an individuals cells; they are important in the immune system
Cell identity markers
The nucleus is often called the control center of the cell Bc it contains _____
Chromosomes
Within the nucleus is a darker stained region called the _____ “little nucleus””
Nucleolus
The job of the _____ is to assemble ribosomes
Nucleolus
_____ is the material that fills the cell from the nuclear membrane to the plasma membrane.
Cytoplasm
The liquid part of the cytoplasm is the ____
Cytosol
The _____ ______ is a membranous network located between the nuclear membrane and the plasma membrane. “Means network inside the cytoplasm”
Endoplasmic reticulum
The rough ER sends proteins to the nearby _____ ______
Golgi apparatus
The ___ ____ is the large organelle consisting of a stack of membranous sacs. As proteins pass through this they are modified sorted and packages for export of the cell
Golgi Apparatus
The _____ is a large round or bean shaped organelles with folded membranes on the inside. The cells “power plant”
Mitochondria
Enzymes within the mitochondria covert energy from the nutrients into ____ energy into the form of ATP
Cellular energy
What has large numbers of mitochondria & needs lots of energy
Muscle cells and spermatozoa
What removes waste and foreign materials from the cells
Lysosome
____ have enzymes that destroy harmful substances produced in metabolism
Peroxisomes
____ are small membrane bound storage sacs that are used to move materials into or out of the cell
Vesicles
Very small barrel shaped protein complexes are called ____ and participate in waste removal
Proteasomes
_____ are rod shaped bodies near the nucleus that function in cell division. They help organize the cell and divide the cell contents during this process
Centrioles
_____ are small hair like projections that wave creating movement of the fluids around the cell. This lines the respiratory tract and move the egg cell from the ovary to the uterus
Cilia
A long whiplike extension from a cell is called ___ and it’s the only type of cell in the human body that has one and its in the spermatozoa cell
Flagellum
____ is most abundant in your body
Water
Water is referred to as a _____ _____
Universal solvent
Substances such as salt that mix with or dissolve in water are _____ “water fearing”
Hydrophobic
Water helps regulate body temp
Just know
Blood plasma has dissolved compounds making it a ____
Solution
The red blood cells and other formed elements five blood the property of a _____
Suspension
The proteins in the plasma give it the property of a ___
Colloid
______ is a mixture in which one substance is dispersed into another but will settle out unless constantly mixed and is a suspension
Heterogeneous
What are you suppose to do before administering a medication that is a suspension
Shake it up
A ____ mixture settles out but does not dissolve.
Colloid
____ is fluid inside of the cells that is a colloid
Cytosol
____ a chemical that is capable of releasing hydrogen- excess amounts of hydrogen
acid
____ is found in stomach acid
HCI hydrochloric acid
A base is a chemical substance that accepts a ____ ion
Hydrogen
A base is also called a ____
Alkali
A reaction between an acid and a base produces a ___
Salt
________ is produced by HCI+NAOH->NACI+H2O
Sodium chloride NACI
Blood pH range
7.35-7.45