BIO 111 Chapter 4 QUIZ PDF

Preview

Summary

Download BIO 111 Chapter 4 QUIZ PDF

Description

Microtubules are composed of ________. 

Answer- hollow tubules formed from globular tubulin proteins



two intertwined strands of actin



fibrous proteins

Mitochondria are responsible for ________. 

breaking down fatty acids and amino acids



Answer-making ATP to power cellular reactions

 initiating protein synthesis Which of the following does not possess a cell wall?

Answer- cells from a scorpion cells from yeast cells from carrots The ________ serves both a structural and signaling role in tissues. Answer- intracellular proteins (INCORRECT) intermediate filaments extracellular matrix Intermediate filaments serve only ________. a role in cellular movement Answer- as structural components as anchor points for microtubules A ________ microscope is best for internal structures. basic light Answer- transmission electron

scanning electron A secondary function of ________ is to provide rigidity to cells. microfilaments microtubules Answer- Intermediate filaments (incorrect) This cellular structure plays a key role in protein synthesis. Nuclear membrane Golgi apparatus Answer- Ribosome The ________ is located directly outside the nuclear membrane. transport vesicle Golgi apparatus Answer- endoplasmic reticulum Plant cells use their central vacuole to ________. Answer- regulate water concentration regulate photosynthesis provide structural support ________ are predominantly responsible for breaking down fatty acids and amino acids. Ribosomes Answer- Peroxisomes Lysosomes The nucleus houses a ________ cell’s ________. Answer- eukaryotic; genetic material prokaryotic; genetic material

eukaryotic; energy stores The cytoplasm in ________ includes everything between the plasma membrane and nuclear envelope.   

both prokaryotes and eukaryotes prokaryotes eukaryotes Microscopes facilitated the development of the ________ theory, which states







________. unified cell; all living things are composed of the basic unit of life (a cell) and new cells arise from other cells Schwann; cells are the basic unit of life, make up all living things, and give rise to new cells cellular origin; all living things are composed of one or more cells and arise from other cells

Plasma membranes are complex structures with ________. surface cholesterol molecules embedded and surface proteins a carbohydrate bilayer Eukaryotic cells use ________ to organize cellular substances. vesicles vacuoles lysosomes The ________ is a structure unique to animal cells that functions in organelle recycling. centrosome mitochondrion

lysosome...