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WorksheetsA&P Chapter 3 Exam
Total questions: 26
Worksheet time: 15mins
These molecules make up the bilayer found in the cell membrane:
Proteins
Phospholipids
Carbohydrates
Cholesterol
An ion channel in the plasma membrane that opens or closes when a chemical binds to it is called a:
Voltage-Gated Channel
Mechanically Regulated Channel
Carrier Protein
Protein Pump
Ligand-Gated Channel
These channel proteins are always open and are responsible for the permeability of the plasma membrane to ions:
Gated Ion Channels
Nongated (leak) ion channels
Ligand-gated channels
Voltage-gated ion channels
The Na+-K+ pump is:
A peripheral protein
A transmembrane protein
A g protein
A glycolipid
A phospholipid
Most cellular membranes are made by:
The nucleus
The cytoskeleton
Enzymes in the provxisomes
The endoplasmic reticulum
Replication of existing membranes
Movement of a solution across a plasma membrane because of a pressure gradient is called this:
Diffusion
Active transport
Osmosis
Filtration
Matter can leave a cell by any of the following means except:
Active transport
Pinocytosis
Simple diffusion
Exocytosis
Facilitated diffusion
These substances may diffuse directly through the lipid bilayer of the cell membrane:
Sodium and chloride ions
Glucose and amino acids
Carbon and oxygen
Entire cells
The sodium-potassium pump performs this function:
used atp
Moved sodium ions out of the cell
Moves potassium ions into the cell
All of these
B and c only
Voltage-gated channels in the plasma membrane open or close in response to changes in the electrical charge difference across the membrane.
(a)
This organelle produces large amounts of ATP:
Ribosomes
Nucleus
Mitochondria
Endoplasmic reticulum
Ribosomal subunits (ribosomes) are produced by this round cell structure found within the nucleus:
Chromosomes
Nucleolus
Lysosome
Mitochondria
The Golgi apparatus produces vesicles which contain proteins that can:
Be secreted by exocytosis
Become part of the plasma membrane
Be enzymes that are used within the cell
All of these
Enzymes found inside lysosomes digest phagocytized bacteria, nonfunctional organelles, nucleic acids, proteins and lipids.
(a)
Cells that synthesize large amounts of lipids would have this:
large amounts of smooth er
Large amounts of rough er
Large numbers of mitochondria
Large numbers of lysosomes
In the process of transcription, mRNA is copied from this:
Ribosomes
DNA
tRNA
rRNA
This can be said of translation:
It requires tRNA and ribosomes
A codon specifies for one amino acid
Proteins are synthesized
All of these
A and b only
This sequence of nucleotides is the anticodon for AUG:
TAC
GAU
CAU
UAC
During DNA replication, this enzyme adds new nucleotides to the existing template:
DNA Ligase
DNA polymerase
Protease
RNA polymerase
This event is not a result of mitosis:
Cells have 23 homologous pairs
Cells have 46 chromosomes
2 haploid cells are formed
Daughter cells are identical
All of these
Cells specialized for absorption of matter from the ECF are likely to show an abundance of:
Lysosomes
Microvilli
Mitochondria
Secretory vesicles
Ribosomes
Fusion of a secretory vesicle with the plasma membrane and release of the vesicle's contents is a process called:
Pinocytosis
Phagocytosis
Receptor-mediated endocytosis
Filtration
Exocytosis
The clear, structureless gel in a cell is its:
Nucleoplasm
Protoplasm
Endolymph
Neoplasm
Cytosol
Which synthesizes proteins?:
Golgi complex
Ribosomes
Lysosomes
Smooth endoplasmic reticulum
Centrioles
Liver cells can detoxify alcohol with two organelles, peroxisomes and rough endoplasmic reticulum:
(a)
Glycoproteins and glycolipids allow cells to identify one another or other molecules which makes them:
attachment proteins
Receptor proteins
Cell identity molecules
Enzymes
