quiz thursday !

Question 1

centrioles

Answer 1

direct formation of mitotic spindle during cell devision

Question 2

chromatin

Answer 2

DNA combines w protein, scattered throughout nucleus

Question 3

chromosomes

Answer 3

during cell division chromatin threads coil and condenses to form DENSE ROD LIKE BODIES

Question 4

cilia

Answer 4

whip like cellular extensions that move substances along the cell surface

Question 5

cytoplasms

Answer 5

site of most cellular activities

Question 6

cytoskeleton

Answer 6

act as cell “bone and muscles “ by furnishing an internal framework that determines cell shape & supports other organelle

Question 7

cytosol

Answer 7

part of cytoplasm containing semitransparent fluid that suspends other elements

Question 8

desomsomes

Answer 8

anchoring junctions that prevent cells subjected to mechanical stress

Question 9

endoplasmic reticulum

Answer 9

provides network of channels for carrying substances from one part of cell to another

Question 10

flagella

Answer 10

whip like tail that propels the cells itself

Question 11

free radicals

Answer 11

highly reactive chemicals with unpaired electrons, scramble structure, devastating

Question 12

gap junction

Answer 12

allow communication between cells

Question 13

inclusions

Answer 13

chem substances that may or may not be present, depending on cell type, stored nutrients

Question 14

intermediate

Answer 14

provide internal guide wires to resist pulling forces on cell

Question 15

lysosomes

Answer 15

membranous bag containing digestive enzymes

Question 16

microfilaments

Answer 16

involved in cell motility and producing changes in cell shape

Question 17

microtubles

Answer 17

determine cell shape and distribution or organelles , very important during cell devision

Question 18

microvilli

Answer 18

tiny fingerlike projections that greatly increase the cells surface area for absorption so that the process occurs more quickly

Question 19

mitochondria

Answer 19

oxygen is used to breakdown food causing energy to be released, cells that require a lot of energy have hundreds

Question 20

nuclear envelope

Answer 20

selectively permeable membrane that encloses nucleoplasm and nucleus, contains nuclear pores that penetrate nuclear membrane

Question 21

nucleoli

Answer 21

sites where ribosomes are assembled

Question 22

nucleus

Answer 22

contains DNA and all instructions needed for building the whole body

Question 23

organelle

Answer 23

metabolic machinery of the cell

Question 24

peroxisomes

Answer 24

contains powerful oxidase enzymes that use molecular oxygen to detoxify a number of harmful or poisonous subs including ALCOHOL and FORMALDEHYDE, disarm free radicals

Question 25

plasma membrane

Answer 25

fragile transparent barrier that contains the cells contents and separates cell from surrounding environment

Question 26

ribosomes

Answer 26

site of protein production, some float freely in cytoplasm, some attached to endoplasmic reticulum

Question 27

rough ER

Answer 27

cell membrane factory - found in cells that export protein

Question 28

secretory vesicles

Answer 28

carry proteins to plasma membrane where they fuse with it , ruptures and contents of sac are ejected to outside of cell

Question 29

smooth ER

Answer 29

plays no role in protein synthesis, instead functions in lipid metabolism and detoxification of drugs and pesticides