Terms in this set (44)
Which theory states that all living things are composed of cells?
What type of microscope would be best for studying the detailed structure of the surface of a plasma membrane.
scanning electron microscope
Which of the following is a feature of prokaryotic cells but not eukaryotic cells.
When using a light microscope to view a cell you obtained from scraping under your fingernails, you d notice that the cell lacks a nucleus; therefore, you conclude that the cell must be a type of ______ cell
One difference between eukaryotic and prokaryotic cells is that eukaryotic cells have membrane-enclosed structures called _____ which are lacking in prokaryotic cells
In eukaryotic cells, what name is given to the region between the nucleus and the plasma membrane
You find a cell of a type you have never seen before. The cell has both a nucleus and a cell wall. Therefore, you conclude that it must be a ______ cell.
Regulating the traffic of chemicals into and out of the cell is a function of the _____________?
______ are the major lipids of plasma membranes
When mixed with water, phospholipids spontaneously form membranes because they have _____________ phosphate groups that are attracted to water and ____________fatty acid tails that avoid water
The concept of a membrane as a fluid mosaic reflects the ability of ______.
phospholipids and most proteins to drift about in the plane of the membrane.
The extracellular matrix of animal cells ______and _______cells
protect and support cells
______ store the information necessary to produce proteins
The nuclear envelope is composed of ______.
a double membrane
The structural combination of DNA and protein forms ______.
Most human cells contain ______ chromosomes.
Which structure manufactures the components of ribosomes?
Some ribosomes are suspended in the cytosol of a cell, whereas other ribosomes are attached to the ________of the nucleus
Where does protein synthesis take place?
Information is transferred from the nucleus to ribosomes via ______.
The endomembrane system includes ______.
Golgi apparatus, lysosomes, vacuoles, and the endoplasmic reticulum
A hormone that will be secreted from the cell is manufactured by __________attached to the endoplasmic reticulum
Based on its function in detoxifying drugs, you would expect to find a large amount of smooth ER in ______ cells.
Functions of the smooth endoplasmic reticulum include lipid synthesis, __________synthesis, and drug detoxification
What structures move proteins from the ER to the Golgi apparatus?
What is a function of the Golgi apparatus?
Which of the following parts of a cell is (are) most like the shipping center of a company?
the Golgi apparatus
Lysosomes are responsible for ______.
digestion of organic material inside the cell
If a cell's lysosomes burst, the cell would ______
Tay-Sachs disease results from ______ lacking a specific type of lipid-digesting enzyme.
Vacuoles are ______.
A protist that contains contractile vacuoles most likely lives in ______water
In plant cells, ______ may contain organic nutrients, pigments, and poisons.
Plant cells, unlike animal cells, are characterized by the presence of a ______.
cell wall and central vacuole
Similar to the nucleus, chloroplasts and mitochondria are surrounded by____ membranes
Which organelle is responsible for photosynthesis?
Cellular respiration can be described as the conversion of the energy stored in ________to energy stored in ______
The cristae of a mitochondrion is an adaptation to ________ the surface area of a part of a cell that is involved in cellular respiration
Microtubules are associated with ______.
all of the above
Tobacco smokers (and those exposed to tobacco smoke) are at greater risk of an ectopic (tubal) pregnancy. Based on your understanding of the structures of the cytoskeleton, what is the best explanation?
Tobacco interferes with the sweeping motion of cilia that aids in the movement of the egg toward the uterus.
Examine the following photographs. Which of the techniques reveal internal cellular detail?
light micrograph and transmission electron micrograph
Examine the structures of the plant and animal cells below. Which of the following organelles connect(s) to the nuclear envelope?
the endoplasmic reticulum
The figure below shows a Paramecium, a single-celled freshwater protist. The hairlike structures visible on the Paramecium allow it to move. These structures are ______.
The child shown in the figure below is not feeling well. Why does the poster say "No Antibiotics Please"?
his illness is caused by a virus