5 PointsCells that secrete large amounts of glycoprotein have many Golgi stacks.__________________True
Question 20.5 PointsIntermediate filaments are most closely associated with which of the following?keratins
Question 30.5 PointsPlants lack organ systems for disposing of toxic metabolic waste products. Their cells’ vacuoles are like what animal cell organelle?lysosomes
Question 40.5 PointsDuring an infection, white blood cells travel to the infected site and phagocytize the pathogens. After phagocytosis, primary lysosomes fuse with the phagocytic vesicle to form a larger vesicle called a secondary lysosome. The purpose for this process is to:mix the pathogens with strong hydrolytic enzymes and destroy them.
coat the bacteria in lipids derived from the Golgi complex, which cover and smother them.
wrap the pathogen in additional membrane, rendering them harmless.
introduce antibodies to the phagocytic vesicles.
degrade the bacteria and export it from the cell.
Question 50.5 PointsThe outer membrane of the nuclear envelope is continuous with the membrane of the ____ and is usually covered with attached ribosomes.endoplasmic reticulum
Question 60.5 PointsDNA must transcribe its information into what type of molecule before leaving the nucleus and entering the cytoplasm?chromosomes
Question 70.5 PointsBriefly explain the relationship between the surface area and volume of a cell and overall cell size. List two ways in which organisms have successfully “solved” this problem.
Question 80.5 PointsThe accompanying image is the product which type of microscope?scanning electron microscope
transmission electron microscope
confocal fluorescence microscope
phase-contrast light microscope
Nomarski differential interference microscope
Question 90.5 PointsDNA is associated with RNA and certain proteins, forming a complex called:chromosomes.
Question 100.5 PointsThe largest and most complex assembly of proteins in most eukaryotic cells are the:smooth ER
Question 110.5 PointsThe smooth ER is the primary site for the synthesis of phospholipids and cholesterol needed to make ____.ribosomes
Question 120.5 PointsYou want to determine the location of a specific protein in a cell using a colored stain. Which of the following is the best technique for this purpose?fluorescence microscopy
phase contrast microscopy
Question 130.5 PointsEvidence that all living cells have a common origin is best illustrated by the:cell theory, which states that the cell is the basic unit of life.
fact that cells are the building blocks of the most complex plants.
idea that cells are the smallest units that can carry out all life activities.
basic similarities in cell structure and chemistry.
fact that all new cells come from previously existing cells.
Question 140.5 PointsWhat cellular structure is unique to plant cells and some photosynthetic fungi?vacuoles
Question 150.5 PointsThe cis face of the Golgi complex is most directly involved in which process?accepting vesicles from the ER
catalyzing the efficient folding of proteins
transporting molecules out of the Golgi
packaging molecules in vesicles
Question 160.5 PointsHow does the scanning electron microscope differ from the transmission electron microscope?The SEM gives a three dimensional image of the object being studied.
The SEM can view the internal structure of a cell.
The SEM utilizes a beam of light that passes through the specimen.
The SEM can view a live specimen.
The SEM relies on the detection of electrons from the beam after contact with the specimens.
Question 170.5 PointsProteins made on ribosomes may be further modified within which organelle?lysosomes.
Question 180.5 PointsA single cell in a smoker’s lung has become cancerous. It doubles its DNA and divides much faster than a normal lung cell. The most likely change that would have caused this condition took place in the:microtubule.
Question 190.5 PointsThe force necessary to cause microtubules of cilia and flagella to slide alongside one another is provided through the action of ____ proteins, which derive the energy to perform their work directly from ____ molecules.dynein; ADP
Question 200.5 PointsAs a result of testing an experimental drip on a vertebrate cell, you notice that the cell cortex becomes more fluid, and although the cell remains strong, it loses its ability to move. Based on this evidence, you correctly conclude that the drug most directly affected:β-tubulin.