3.1 - 3.3 Cellular Form and Function

Which membrane transport process consumes ATP and uses a carrier? Multiple choice question. Diffusion Passive Osmosis Active

Active

Within the plasma membrane, most transmembrane proteins will be comprised of what type of regions? Multiple choice question. Only hydrophobic Both hydrophobic and hydrophilic Only hydrophilic

Both hydrophobic and hydrophilic

Water and electrolytes can cross a cell membrane through which of the following? Multiple choice question. Transporters Cholesterol molecules Vesicles Channels

Channels

Cells that line the intestine are taller than they are wide and therefore described as what? Multiple choice question. Cuboidal Discoid Spheroid Columnar

Columnar

Voltage-regulated gates respond to changes in what across the plasma membrane? Multiple choice question. Electrical potential Chemical messengers Physical stress

Electrical potential

Which are types of vesicular transport? Multiple choice question. Osmosis and diffusion Active transport and osmosis Filtration and pinocytosis Endocytosis and exocytosis

Endocytosis and exocytosis

In which process does a secretory vesicle fuse with a cell membrane and release its contents into the extracellular space? Multiple choice question. Exocytosis Phagocytosis Transcytosis Pinocytosis

Exocytosis

The greater or steeper the concentration gradient, the ______ the rate of diffusion. Multiple choice question. slower faster

Faster

For each type of surface extension, match its role with its name. Instructions Flagella Microvilli Cilia

Flagella matches Choice, Propulsion of cell Propulsion of cell Microvilli matches Choice, Increase surface area, as for absorption Increase surface area, as for absorption Cilia matches Choice, Move a substance along a cell surface Move a substance along a cell surface

The rate of diffusion is increased by ______ the surface area of the cell membrane. Multiple choice question. increasing decreasing

Increasing

As a membrane surface area increases, what happens to it's diffusion rate? Multiple choice question. It decreases. It increases. It stays the same.

It increases.

Which of the following molecules can readily diffuse through a cell membrane? Multiple select question. Lipid-soluble molecules Hydrophobic molecules Large hydrophilic molecules Nonpolar molecules

Lipid-soluble molecules Hydrophobic molecules Nonpolar molecules

What is the diffusion of water down its concentration gradient through a selectively permeable membrane called? Multiple choice question. Phagocytosis Filtration Simple diffusion Osmosis

Osmosis

Transport mechanisms like filtration, facilitated diffusion, and osmosis are examples of which of the following forms of transport? Multiple choice question. Endocytosis Passive Second messenger Idle Active

Passive

Neutrophils engulf bacteria by surrounding them with pseudopods and drawing them into the cell by which process? Multiple choice question. Phagocytosis Pinocytosis Facilitated diffusion Simple diffusion

Phagocytosis

What drives filtration through a membrane? Multiple choice question. Concentration gradients ATP Electrical gradients Physical pressure

Physical pressure

What are three mechanisms of carrier-mediated transport? Multiple select question. Endocytosis Primary active transport Simple diffusion Facilitated diffusion Secondary active transport

Primary active transport Facilitated diffusion Secondary active transport

The plasma membrane is made up of phospholipids and which of the following? Multiple choice question. Carbohydrates Calcium Protein Cellulose

Protein

Which membrane type allows some things through and restricts the passage of others? Multiple choice question. Selectively permeable Impermeable Passively permeable Permeable

Selectively permeable

Plasma membranes are selectively permeable. What does this mean? Multiple choice question. Some compounds can permeate (pass through) the membrane while others cannot. No movement of compounds is allowed through the membrane. All compounds can freely pass through the membrane, but not all the time.

Some compounds can permeate (pass through) the membrane while others cannot.

What are cells that are thin and flat, such as found in the walls of the alveoli of the lungs, called?

Squamous

As a solute concentration rises, its rate of transport through a membrane increases up to the point where all the carriers are saturated. This point of saturation is called what? Multiple choice question. The isotonic point Equilibrium The transport maximum

The transport maximum

When all carriers are saturated, the transport of the molecule levels off at a rate called what? Multiple choice question. Transport maximum Transport minimum Transport threshold Transport capacity

Transport maximum

Which of the following moves large particles and fluid droplets across the cell membrane? Multiple choice question. Vesicular transport Osmosis Simple diffusion Passive transport

Vesicular transport

Phospholipids are ______ molecules that have a hydrophobic tail and hydrophilic head. Multiple choice question. amphipathic nonpolar polar

amphipathic

Amphipathic phospholipids arrange themselves into a(n) ______ to form the plasma membrane Multiple choice question. beta pleated sheet bilayer alpha helix circle

bilayer

In blood capillaries, blood pressure forces fluid through gaps in the capillary wall in a process called ____?

capillary filtration

Oxygen passes into the bloodstream across the membranes in the lung by the process of ____?

diffusion

Passive mechanisms of membrane transport ______. Multiple choice question. do not require ATP require ATP

do not require ATP

The vesicular transport process of discharging material from a cell is called . Listen to the complete question

exocytosis

The process of using a carrier to passively transport a solute through a membrane down its concentration gradient is known as diffusion.

facilitated

Coming from words that mean "sugar coat", the layer of carbohydrates coating a cell membrane is called the ____?

glycocalyx

Components of the plasma membrane called ______ help form the glycocalyx. Multiple choice question. glycolipids glucose proteins cholesterol lipids

glycolipids

Most transmembrane proteins are ______. Multiple choice question. dipeptides lipoproteins glycoproteins amino acids

glycoproteins

When the concentration of a substance differs from one area to another, this creates a concentration

gradient

The physical force generated by a liquid, such as blood or tissue fluid, is known as pressure.

hydrostatic

Which pressure allows for the filtration of fluid from blood vessels into the extracellular fluid? Multiple choice question. Osmotic Atmospheric Hydrostatic

hydrostatic

Tissue fluid is also called ______. Multiple choice question. intracellular fluid interstitial fluid cytoplasm cytosol

interstitial fluid

An example of cuboidal cells are ______. Multiple choice question. cells lining the stomach cells lining the esophagus liver cells nerve cells

liver cells

The process of engulfing particles (such as bacteria) by surrounding the particle and drawing it into the cell is referred to as .

phagocytosis

The majority of the plasma membrane can be described as a bilayer of ______with associated proteins.

phospholipids

Mechanisms for moving substances across the plasma membrane that require the use of cellular ATP include ______. Multiple select question. passive diffusion active transport vesicular transport osmosis

vesicular transport active transport

What is a protein that participates in transmembrane transport called? Multiple choice question. A carrier A self-identity marker An enzyme An MHC protein

A carrier

What do voltage-gated ion channels open in response to? Multiple choice question. The presence of specific chemicals A change in membrane potential Changes in membrane thickness Distortion of the cell membrane

A change in membrane potential

In which process does a solute bind to a carrier in the plasma membrane that then changes shape and releases the solute to the other side of the membrane? Multiple choice question. Secondary active transport Carrier-mediated transport Reverse osmosis Simple diffusion

Carrier-mediated transport

Facilitated diffusion, primary, and secondary active transport are all mechanisms of which of the following? Multiple choice question. Carrier-mediated transport Vesicular transport Passive transport Energy requiring processes

Carrier-mediated transport