StudyQuestionHub

Chapter 4

Biology: The Unity and Diversity of Life · 13 exercises

Problem 1

All cells have these three things in common: __________. a. cytoplasm, DNA, and organelles with membranes b. a plasma membrane, DNA, and a nucleus c. cytoplasm, DNA, and a plasma membrane d. a cell wall, cytoplasm, and DNA

4 step solution

Problem 2

Name one major principle of the cell theory.

3 step solution

Problem 3

The surface-to-volume ratio ___________. a. does not apply to prokaryotic cells b. constrains cell size c. is part of the cell theory d. b and c

3 step solution

Problem 5

Cell membranes consist mainly of __________ and __________. a. lipids; carbohydrates b. phospholipids; protein c. lipids; carbohydrates d. phospholipids; ECM

4 step solution

Problem 7

Unlike eukaryotic cells, prokaryotic cells __________. a. have no plasma membrane b. have RNA but not DNA c. have no nucleus d. a and c

3 step solution

Problem 8

8\. Enzymes contained in ___________ break down worn-out organelles, bacteria, and other particles. a. lysosomes b. amyloplasts c. endoplasmic reticulum d. peroxisomes

4 step solution

Problem 9

Put the following structures in order according to the pathway of a secreted protein: a. plasma membrane b. Golgi bodies c. endoplasmic reticulum d. post-Golgi vesicles

4 step solution

Problem 10

The main function of the endomembrane system is: a. building and modifying proteins and lipids b. isolating DNA from toxic substances c. secreting extracellular matrix onto the cell surface d. producing ATP by aerobic respiration

3 step solution

Problem 11

True or false? The plasma membrane is the outermost component of all cells. Explain.

4 step solution

Problem 12

Cell junctions called ___________ connect the cytoplasm of plant cells.

2 step solution

Problem 13

Which of the following following organelles contains no DNA? a. nucleus b. Golgi body c. mitochondrion d. chloroplast

4 step solution

Problem 14

No animal cell has a __________. a. plasma membrane b. flagellum c. lysosome d. cell wall

4 step solution

Problem 15

Match each cell component with a function. __________mitochondrion __________chloroplast __________cell junction __________smooth ER __________Golgi body __________rough ER __________peroxisome __________amyloplast __________flagellum a. protein synthesis b. connection c. stores starch d. breaks down toxins e. sorts and ships f. assembles lipids g. photosynthesis h. ATP production i. movement

9 step solution

Show/ page