BIOL-1230 Chapter 4 Review

One strategy that allows larger cells to have an effective surface area to volume ratio is

• having a completely spherical shape

• being short and fat

• having thin, finger-like projections

• having a thinner plasma membrane

• locomotion

Actin, myosin, and tubulin are

• proteins

• in chromatin

• primarily in neurons

• components of filaments

• components of the plasma membrane

The ratio of the size of the image seen with the microscope to the actual size of the object is called

• magnification

• resolution

• resolving power

• centrifugation

• fractionation

The scanning electron microscope differs from the transmission electron microscope in that the
scanning electron microscope

• can view a live specimen

• relies on the detection of electrons from the beam after contact with the specimens

• can view the internal structure of a cell

• utilizes a beam of light that passes through the specimen

• gives a three dimensional image of the object being studied

A 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

• nucleus

• nucleolus

• microtubule

• mitochondria

• lysosome

Tags

NGSS.HS-LS1-4

NGSS.HS-LS3-2

If a toxin, such as a bacterial toxin, destroys ribosomes, what cellular activity will be affected first?

• protein synthesis

• DNA synthesis

• movement

• energy storage

• active transport

Tags

NGSS.HS-LS1-1

The smooth endoplasmic reticulum

• is absent in most plant cells

• synthesizes proteins

• provides structural support

• synthesizes lipids

• is required for ribosome synthesis

Proteins made on ribosomes may be further modified within the

• lysosomes

• nucleus

• mitochondria

• Golgi complex

• peroxisomes

The cis face of the Golgi complex is most directly involved in which of the following?

• packaging molecules in vesicles

• accepting vesicles from the ER

• synthesizing proteins

• transporting molecules out of the Golgi

• catalyzing the efficient folding of proteins

A glycoprotein destined for secretion from the cell would move through the Golgi complex in this
sequence

• cis face to medial region to trans face

• trans face to cis face to medial region

• trans face to medial region to cis face

• cis face to trans face to medial region

• medial face to trans face to cis face