Lesson 4 Definitons

Question 1

nucleus

Answer 1

contains nuclear pore and envelope, as well as chromatin and nucleoli

Question 2

nucleoli

Answer 2

makes ribosomal subunits

Question 3

centrosome

Answer 3

contains centrioles

Question 4

centrioles

Answer 4

where microtubules come out

Question 5

golgi apparatus

Answer 5

organizes and ships proteins

Question 6

mitochondira

Answer 6

powerhouse of the cell

Question 7

vacoule

Answer 7

various functions, including storage and helping with growth

Question 8

chloroplast

Answer 8

plastid that contains chlorophyll and in which photosynthesis takes place

Question 9

Smooth endoplasmic reticulum

Answer 9

main functions are the synthesis of lipids, steroid hormones, the detoxification of harmful metabolic byproducts and the storage and metabolism of calcium ions within the cell

Question 10

lysosomes

Answer 10

helps with digestion, low pH

Question 11

cytoplasm

Answer 11

the material or protoplasm within a living cell, excluding the nucleus.

Question 12

cytoskeleton

Answer 12

made of microtubules and microfilaments

Question 13

peroxisome

Answer 13

digests enzymes and fatty acids

Question 14

microtubules

Answer 14

tubular structure present in numbers in the cytoplasm of cells, sometimes aggregating to form more complex structures.

Question 15

microfilaments

Answer 15

polymers of the protein actin that are part of a cell’s cytoskeleton

Question 16

pseudopod

Answer 16

“false foot” (amoeba uses this to move)

Question 17

endomembrane system

Answer 17

group of membranes and organelles in eukaryotic cells that works together to modify, package, and transport lipids and proteins

Question 18

chlorosome

Answer 18

light-harvesting organelles of green bacteria

Question 19

motor proteins

Answer 19

move along cytoplasm