問題一覧
1
Which process requires no energy from the cell?
Facilitated diffusion
2
Which organelle is the storehouse for most of a cells genetic information
Nucleus
3
which of the following organelles can be found in the cytoplasm and on the surface of the endoplasm reticulum
Ribosomes
4
The interior of the lipid bilayer of a cell membrane forms a nonpolar zone that
Repels ions and most polar molecules
5
Which of the following is a network of proteins that supports and gives shape to a cell?
Cytoskeleton
6
the movement of molecules down a concentration gradient through transport proteins in the cell is a type of
Facilitated diffusion
7
What is the term for the jellylike substance
Cytoplasm
8
Which of the following is a major principle upon which cell theory is based?
All organisms are made up of cells
9
Which organelle contains enzymes that break down damaged cell part
Lysosome
10
Phospholipids are molecules that have
one polar phosphate head and two nonpolar fatty acid tails
11
Microfilaments, microtubules, and intermediate fibers are
Protein fibers
12
Which organelles are unique to plant cells?
Chloroplasts
13
Water moves into a cell when the solution surrounding the cell is
Hypotonic
14
Molecules that are too large to be moved across a cell membrane
Exocytosis
15
Which model did scientists develop to describe the cell membrane
Fluid mosaic model
16
Which process is occurring when a vesicle fuses with the cell membrane
exocytosis
17
What is the term for the diffusion of water across a semipermeable membrane?
Osmosis
18
Which process occurs inside the chloroplasts?
Photosynthesis
19
How does water pass through the cell membrane?
directly through the lipid bilayer
20
A solution that is hypotonic to a cell has
Fewer solutes than the cell
21
Which of the following led to the discovery of cells?
Microscopes
22
Which phrase best describes passive transport?
Requires no energy from the cell
23
Specialized structures that work together inside a cell are called
Organelles
24
Osmosis is a type of
Passive transport
25
Which of the following statements about an isotonic solution and
The solution has the same solute concentration that the cytoplasm does
26
Which phrase best describes the property of selective permeability?
Some molecules pass
27
Plant cells have a large membrane-bound compartment stored. This compartment is called the
Central vacuole
28
Which type of molecule forms the cell membrane?
Phospholipid
29
A cell that requires a lot of energy might contain large numbers of
Mitochondria
30
which process uses proteins to move molecules against a concentration gradient
Active transport
31
Which phrase best describes rough ER?
Studded with ribosomes
32
Unlike passive transport, active transport requires
Energy from the cell
33
The double membrane surrounding the nucleus is called
Nuclear envelope
34
As a result of diffusion, the concentration of many types of substances
eventually becomes balanced on both sides of a membrane.
35
Which organelles supply energy to the cell?
Mitochondria
36
Proteins and polysaccharides that are too large to move into a cell through diffusion move by
Endocytosis
37
Removing materials from a cell in vesicles is called
Expocytosis
38
Unlike a eukaryotic cell, a prokaryotic cell does not have
Nucleus
39
Proteins that serve as tunnels for specific substances through the lipid bilayer are
Channel proteins