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Flashcards in Chapter 4 Deck (28)
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1

Which of the following is found in all cells?

Ribosomes

Cytoplasm

Genetic material

Plasma membrane

2

Identify the scientists who are credited with the cell theory.

Schleiden and Schwann

3

What theory is the unifying foundation of cell biology?

Cell Theory

4

Based on cell structure, all life forms can be placed into two categories called ___ and ____

eukaryotic

prokaryotic

5

What is found in all cells?

Ribosomes

6

Main points of the cell theory?

Cells arise only by division of a previously existing cell.

Cells are the smallest living things.

All living organisms are composed of one or more cells.

7

Bacterial cells are encased by a strong cell wall of peptidoglycan. Which of the following accurately describes peptidoglycan?

Carbohydrate matrix cross-linked by short polypeptide units

8

Archaea differ from bacteria in which of the following ways?

They lack peptidoglycan.

9

The functions of the rough endoplasmic reticulum include which of the following?

Protein synthesis

Protein sorting

Glycoprotein synthesis

10

Functions of the smooth endoplasmic reticulum include which of the following?

Storage of calcium

Steroid synthesis

Assembly of membrane lipids

11

The core of lipid droplets could contain which of the following lipids?

Sterols

Triglycerides

12

What enzyme breaks down hydrogen peroxide to harmless substances in peroxisomes?

Catalase

13

Which of the following structures of the endomembrane system is not matched properly?

Rough endoplasmic reticulum: Ca2+ storage

 

Rationale:

This is a function of the SMOOTH endoplasmic reticulum.

14

Functions that include glycoprotein production and protein sorting are characteristic of the _____ endoplasmic reticulum.

rough

15

Functions that include steroid synthesis and assembly of membrane lipids are characteristic of the ____ endoplasmic reticulum.

smooth

16

What are similarities between mitochondria and chloroplasts

Presence of DNA

Presence of protein synthesizing ribosomes

17

Hydrophobic lipids are made soluble int he cytoplasm by being coated with _______.

phospholipid

18

The central ______ of a plant cell is involved in maintaining the tonicity of the cell.

vacuole

19

What does the mitochondrial matrix refer to?

The compartment inside of the inner membrane

20

The functions of the rough endoplasmic reticulum include?

Protein sorting

Glycoprotein synthesis

Protein synthesis

21

What term describes a relationship, in which a smaller cell lives inside a larger cell?

Endosymbiosis

22

Which part of the cell's primary function is to support cell shape and anchor organelles to fixed locations?

Cytoskeleton

23

Peroxisomes contain the enzyme catalase that breaks down hydrogen peroxide into oxygen and _____.

water

24

The fibers of the _____ provide the scaffolding to hold certain enzymes in place in a cell.

cytoskeleton

25

Which fiber is involved with cellular crawling?

Actin

26

Another term for actin filaments is ______.

Microfilaments

27

Surface _____ give cells their identity. In multicellular organisms, this allows the recognition of cells that are the same tissue type.

protein

28

Gap junctions can typically be in the ___ ___ of a cell.

Plasma

Membrane