ScienceBiologyAnatomy And Physiology Final Chapter 3
Please enter something

Anatomy And Physiology Final Chapter 3

Bianca Torres avatar Bianca Torres
24 July 2022
4.7 (114 reviews)
18 test answers

Unlock all answers in this set

Unlock answers (14)
question
Which of the following is the main component of the cell membrane? carbohydrates water cholesterol phospholipids
answer
phospholipids Although phospholipids have a polar head, the long fatty acid tails are nonpolar, making the membrane mostly nonpolar.
question
Although phospholipids have a polar head, the long fatty acid tails are nonpolar, making the membrane mostly nonpolar. not permeable fully permeable semipermeable impermeable
answer
semipermeable The cell membrane is semipermeable, or selectively permeable, because some things can easily pass through it while others cannot.
question
Which of the following is not a major function of proteins in the cell membrane? forming the entire glycocalyx forming channels acting as receptors anchoring cells to other structures
answer
forming the entire glycocalyx The glycocalyx is composed mostly of carbohydrates.
question
What part of a cell membrane is usually in contact with the interstitial fluid? cholesterol fatty acid tails phosphate heads of phospholipids hydrophobic molecules
answer
phosphate heads of phospholipids The phosphate heads of the phospholipids are polar, so they are attracted to the polar water molecules.
question
figure 3.3
answer
nonpolar tail of phospholipid molecule polar head of phospholipid molecule cholesterol glycolipid glycoprotein peripheral proteins integral proteins
question
Which of the following is characteristic of cilia? They move substances in many directions across a cell's surfaces. They are substantially longer than flagella, and are less common than flagella in humans. They are whiplike, motile cellular extensions that occur in large numbers on the exposed surfaces of certain cells. They are used for cellular adhesion.
answer
They are whiplike, motile cellular extensions that occur in large numbers on the exposed surfaces of certain cells. Cilia are whiplike, motile cellular extensions that occur, typically in large numbers, on the exposed surfaces of certain cells. Ciliary action moves substances in one direction across cell surfaces. Centrioles forming the bases of cilia and flagella are commonly referred to as basal bodies.
question
What is a membrane potential? a voltage or electrical charge across the plasma membrane the possibility of cell activity the ability of the cells to perform their specialized functions cooperation between cells
answer
a voltage or electrical charge across the plasma membrane The membrane potential is the electrical potential energy (measured in millivolts) resulting from the separation of oppositely charged particles (ions) across the plasma membrane. At rest, membrane potentials are typically negative, ranging from −50 to −100 mV, with more anions (than cations) concentrated along the internal surface of the membrane, and more cations (than anions) concentrated along the external surface.
question
labeled cell
answer
smooth endoplasmic reticulum mitochondrion lysosomes centrioles nucleus rough endoplasmic reticulum ribosomes golgi apparatus
question
labeled cell
answer
chromatin nucleolus cytosol microtubule intermediate filament nuclear envelope plasma membrane
question
Red blood cells
answer
isotonic solutions hypertonic solutions hypotonic solutions
question
A red blood cell placed in pure water would ________. neither shrink nor swell swell and burst shrink swell initially, then shrink as equilibrium is reached
answer
swell and burst
question
Crenation (shrinking) is likely to occur in blood cells immersed in ________. a hypotonic solution a hypertonic solution blood plasma an isotonic solution
answer
a hypertonic solution
question
A cell engulfing a relatively large particle will likely utilize ________. phagocytosis pinocytosis receptor-mediated endocytosis exocytosis
answer
phagocytosis
question
If a cell is non-selectively engulfing samples of extracellular fluid, for example to absorb nutrients, it will likely utilize ________. phagocytosis pinocytosis receptor-mediated endocytosis exocytosis
answer
pinocytosis
question
Which cellular organelle is seen in this figure?
Which cellular organelle is seen in this figure?
answer
mitochondrion
question
What major function occurs on the specific membranes indicated by A? digestion of ingested food production of most of the cell's ATP synthesis of proteins replication of DNA
What major function occurs on the specific membranes indicated by A? digestion of ingested food production of most of the cell's ATP synthesis of proteins replication of DNA
answer
synthesis of proteins Structure A is the rough endoplasmic reticulum (ER). The figure illustrates how proteins are synthesized on ribosomes bound to the rough ER, sorted and modified in the Golgi apparatus, and delivered to the plasma membrane for secretion or packaged into lysosomes.
question
Which of the following structures would aid a cell in allowing more nutrients to be absorbed by the cell? stereocilia microvilli flagella primary cilia
answer
microvilli
question
Dividing cells must pass through the phases of mitosis the following order: Prophase, Metaphase, Anaphase, and Telophase.
answer
true