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Biology 1113 - Homework Qs (Ch. 7 & 8) Terms in this set (52) The is composed of DNA and protein a) centriole b) flagellum c) chromatin d) mitochondrion e) ribosome c) Chromatin (Chromatin is a complex of DNA and protein found in eukaryotic cells. €8,16
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Biology 1113 - Homework Qs (Ch. 7 & 8) Terms in this set (52) The is composed of DNA and protein a) centriole b) flagellum c) chromatin d) mitochondrion e) ribosome c) Chromatin (Chromatin is a complex of DNA and protein found in eukaryotic cells.
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Biology 1113 - Homework Qs (Ch. 7 & 8)
Terms in this set (52)
The is composed of DNA and protein
a) centriole
b) flagellum
c) chromatin
d) mitochondrion
e) ribosome c) Chromatin
(Chromatin is a complex of DNA and protein found in eukaryotic cells. Its primary function is packagi...
The ___ is composed of DNA and protein c) Chromatin
a) centriole (Chromatin is a complex of DNA and protein found in eukaryotic cells. Its primary
b) flagellum function is packaging long DNA molecules into more compact, denser structures.)
c) chromatin
d) mitochondrion
e) ribosome
Ribosomal subunits are manufactured by the b) Nucleolus
_____. (The nucleolus makes ribosomal subunits from proteins and ribosomal RNA, also known
a) lysosome as rRNA. It then sends the subunits out to the rest of the cell where they combine into
b) nucleolus complete ribosomes. <- makes the parts of a ribosome)
c) smooth endoplasmic reticulum
d) peroxisome
e) rough endoplasmic reticulum
_____ are the sites of protein synthesis. a) Ribosomes
a) Ribosomes
b) Peroxisomes
c) Mitochondria
d) Microfilaments
e) Golgi apparatuses
Which of these organelles manufactures b) Rough Endoplasmic Reticulum
proteins bound for secretion out of the cell? (Ribosomes make (free) proteins to be used inside the cell, where as the rough ER
a) nucleolus makes secretory proteins bound for the exterior of the cell. Further processing and
b) rough endoplasmic reticulum packaging occurs in the Golgi apparatus.)
c) lysosomes
d) Golgi apparatus
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The ___ is a selective barrier, regulating the c) Plasma membrane
passage of material into and out of the cell. (The plasma membrane regulates the passage of material into and out of the cell)
a) nuclear envelope
b) lysosome
c) plasma membrane
d) chloroplast
e) nucleus
Where is calcium stored? e) Smooth Endoplasmic Reticulum
a) microtubules (In addition to storing calcium, the smooth ER also plays a role in detoxification and
b) rough endoplasmic reticulum lipid synthesis)
c) mitochondria
d) centrioles
e) smooth endoplasmic reticulum
Which of these are hollow rods that shape e) Microtubules
and support the cell? (Microtubules are rods that also play a role in organelle movement)
a) peroxisomes
b) chloroplasts
c) plasma membrane
d) microfilaments
e) microtubules
b) Basal bodies
_____ is/are identical in structure to centrioles.
(The main function of the centriole is to help with cell division in animal cells. The
a) Mitochondria
centrioles help in the formation of the spindle fibers that separate the chromosomes
b) Basal bodies
during cell division (mitosis). Centrioles are only found in animal cells. All centrioles are
c) Microfilaments
made of protein strands called microtubules. A basal body is a protein structure found
d) Chromatin
at the base of a eukaryotic undulipodium (cilium or flagellum). The basal body serves as
e) Nuclear envelopes
a nucleation site for the growth of the axoneme microtubules)
Which of these organelles produces H2O2 a) Peroxisome
as a by-product? (Peroxisomes have two functions: break down fatty acids to be used for forming
a) peroxisome membranes and as fuel for respiration; and transfer hydrogen from compounds to
b) nucleus oxygen to create hydrogen peroxide and then convert hydrogen peroxide into water.
c) mitochondrion Peroxisomes are membrane bound and contain enzymes crucial for metabolic activity.
d) flagellum Site of redox reactions)
e) centrioles
Cilia and flagella are projections from the cell. They are made up of microtubules. They
are motile and designed either to move the cell itself or to move substances over or
What are the functions of flagella and cilia? around the cell. Cilia helps with rotational movement whereas flagella helps with wave-
like movement (forward). Cilia are short and there are usually many (hundreds) cilia per
cell. Flagella are longer and there are fewer flagella per cell (usually one to eight).
** Muscle contraction (move cells)
** Cell division (divide animal cells in two)
What is the function of microfilaments?
- Maintain cell shape by resisting tension (pull)
- Move organelles and cytoplasm in plants, fungi, & animals
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