Download Biology II – Chapter 4 Test**

Biology II – Chapter 4 Self Test
1. The outer living boundary of the cell is the _______________________________.
2. The cell membrane regulates the ____________________________ of molecules into and out of the cell
3. _____________________________ bilayer determines the basic structure of the cell membrane.
4. _____________________________ are cell-to-cell channels made of protein channels that connect the
insides of adjacent cells.
5. _____________________________ is the transport that occurs constantly and is crucial in living organisms.
6. The lipid bilayer contains ____________________________ that have carbohydrate chains attached to the
polar head.
7. The transfer of a substance into or out of a cell from a region of lower concentration to a region of higher
concentration by a process that requires a carrier and an expenditure of energy is known as
_________________________________.
8. Energy is required to transport molecules against the concentration gradient in the form of _____________.
9. Because of the restricted passage associated with the cell membrane, it is said to be
_________________________________.
10. Which of the following is a cell protein:
recognition
glycoprotein
channel
carrier
all of these
11. Each phospholipid has a polar head that is __________________________, and two nonpolar tails that are
_________________________________.
12. _________________________ proteins are required for facilitated diffusion and active transport.
13. The proteins which form pores or channels that selectively interact with specific molecules or ions so they
can cross the membrane to enter or exit the cell are ___________________________ proteins.
14. ________________________________ is a type of transport that does not require any energy to occur.
15. _____________________________ is the type of passive transport that is spontaneous and no energy is
required for it to begin.
16. Cell eating or the taking in of bacteria and/or debris by engulfing is known as _______________________.
17. A solution that has a higher concentration of solute and a lower concentration of water than the cell is called
____________________________.
18. ____________________________ proteins make up the cellular fingerprint or identification tag by which
cells recognize each other.
19. Solutions where cells that are placed in them neither gain or lose water are _______________________.
20. Cell drinking or the taking in of fluid along with dissolved solutes by engulfing is known as
____________________________.
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21. ________________________________________ selectively moves specific molecules into the cells with
the aid of receptor proteins at coated pit sites.
22. Which of the following is NOT a passive transport:
diffusion
facilitated diffusion
osmosis
receptor-mediated endocytosis
23. _______________________________ is the cell connection that is restricted to plant cells.
24. The difference in net movement of a substance from a region of higher concentration to a region of lower
concentration is called the ______________________________________.
25. Glucose and amino acids cross the cell membrane even though they are not lipid soluble with help and no
energy use by means of ___________________________________.
26. A process in which a vesicle is formed at the cell membrane to bring a substance into the cell is called
_______________________________.
27. A process in which an intracellular vesicle fuses with the cell membrane so that the vesicle’s contents are
released outside the cell is called ______________________________.
28. ____________________________ hold adjacent cells together through proteins filaments attached to the
interior of each cell to further strengthen the attachment.
29. – 33. Label the following types of transports:
Endocytosis
Diffusion
Osmosis
Active Transport
Passive Transport
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KEY
1. cell membrane/plasma membrane
2. exchange
3. Phospholipid
4. gap junctions
5. Osmosis
6. glycoproteins
7. active transport
8. ATP
9. selectively permeable
10. all of these
11. hydrophilic, hydrophobic
12. carrier
13. channel
14. passive transport
15. diffusion
16. phagocytosis
17. hypertonic
18. Recognition
19. isotonic
20. pinocytosis
21. receptor-mediated endocytosis
22. receptor-mediated endocytosis
23. plasmodesmata
24. concentration gradient
25. facilitated diffusion
26. endocytosis
27. exocytosis
28. desmosomes
29.-33.Label the following types of transports:
diffusion
osmosis
endocytosis
Active transport
Passive transport
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