PRACTICE QUIZ CHAP. 6 extra – Flashcards

Which statement correctly characterizes bound ribosomes? 1) Bound ribosomes are enclosed in their own membrane. 2) Bound and free ribosomes are structurally different. 3) Bound ribosomes generally synthesize membrane proteins and secretory proteins. 4) The most common location for bound ribosomes is the cytoplasmic surface of the plasma membrane. 5) All of the above.

Which structure is not part of the endomembrane system? 1) nuclear envelope 2) chloroplast 3) Golgi apparatus 4) plasma membrane 5) ER

Cells of the pancreas will incorporate radioactively labeled amino acids into proteins. This "tagging" of newly synthesized proteins enables a researcher to track their location. In this case, we are tracking an enzyme secreted by pancreatic cells. What is its most likely pathway? 1) ER→Golgi→nucleus 2) Golgi→ER→lysosome 3) nucleus→ER→Golgi 4) ER→Golgi→vesicles that fuse with plasma membrane 5) ER→lysosomes→vesicles that fuse with plasma membrane

Which structure is common to plant and animal cells? 1) chloroplast 2) wall made of cellulose 3) central vacuole 4) mitochondrion 5) centriole

Which of the following is present in a prokaryotic cell? 1) mitochondrion 2) ribosome 3) nuclear envelope 4) chloroplast 5) ER

Which cell would be best for studying lysosomes? 1) muscle cell 2) nerve cell 3) phagocytic white blood cell 4) leaf cell of a plant 5) bacterial cell

Which structure-function pair is mismatched? 1) nucleolus; production of ribosomal subunits 2) lysosome; intracellular digestion 3) ribosome; protein synthesis 4) Golgi; protein trafficking 5) microtubule; muscle contraction

Cyanide binds with at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the cyanide would be found within the 1) mitochondria. 2) ribosomes. 3) peroxisomes. 4) lysosomes. 5) endoplasmic reticulum.

1 meter = _____ centimeters. 1) 100 2) 1,000,000,000 3) 1,000 4) 1,000,000,000,000 5) 1,000,000

_____ are surface appendages that allow a bacterium to stick to a surface. 1) Cell walls 2) Flagella 3) Ribosomes 4) Mitochondria 5) Pili

What is the function of a bacterium's capsule? 1) protection 2) adhesion 3) protein synthesis 4) DNA storage 5) propulsion

In eukaryotic cells the first step in protein synthesis is the _____. 1) translation of an RNA nucleotide sequence into a sequence of amino acids 2) linking of nucleotides to form a polypeptide 3) translation of a DNA nucleotide sequence into a sequence of amino acids 4) transferring of information from DNA to messenger RNA 5) removal of introns from RNA and the stitching together of exons

Which organelle plays a role in intracellular digestion? 1) lysosome 2) ribosome 3) chloroplast 4) Golgi apparatus 5) plasmodesma

The cilia and flagella of eukaryotic cells are composed of _____. 1) microtubules 2) intermediate filaments 3) microfilaments 4) pili 5) tonofilaments

Which of these cell junctions form a barrier to the passage of materials? 1) tight junctions 2) gap (communicating) junctions 3) desmosomes (anchoring junctions) 4) keratin fibers 5) plasmodesmata

The primary role of _____ is to bind animal cells together. 1) plasmodesmata 2) gap (communicating) junctions 3) the cytoskeleton 4) desmosomes 5) tight junctions

_____ aid in the coordination of the activities of adjacent animal cells. 1) Gap (communicating) junctions 2) Tight junctions 3) Keratin fibers 4) Plasmodesmata 5) Desmosomes

Ribosomal subunits are manufactured by the _____. 1) lysosome 2) nucleolus 3) peroxisome 4) rough endoplasmic reticulum 5) smooth endoplasmic reticulum

_____ are the sites of protein synthesis. 1) Mitochondria 2) Peroxisomes 3) Golgi apparatuses 4) Microfilaments 5) Ribosomes

Which of these is involved in the manufacture of membrane? 1) smooth endoplasmic reticulum 2) ribosomes 3) Golgi apparatus 4) nucleolus 5) rough endoplasmic reticulum

The _____ is a selective barrier, regulating the passage of material into and out of the cell. 1) lysosome 2) nuclear envelope 3) chloroplast 4) plasma membrane 5) nucleus

Where is calcium stored? 1) mitochondria 2) smooth endoplasmic reticulum 3) centrioles 4) rough endoplasmic reticulum 5) microtubules

Which of these are hollow rods that shape and support the cell? 1) plasma membrane 2) microtubules 3) chloroplasts 4) microfilaments 5) peroxisomes

_____ is/are identical in structure to centrioles. 1) Mitochondria 2) Nuclear envelopes 3) Chromatin 4) Microfilaments 5) Basal bodies

Which of these organelles produces H2O2 as a by-product? 1) mitochondrion 2) nucleus 3) centrioles 4) flagellum 5) peroxisome

The _____ is composed of DNA and protein. 1) mitochondrion 2) flagellum 3) centriole 4) chromatin 5) ribosome