Cellular Transport And Mitosis C8

Front 1

Water moves into a cell placed in a(n) _____ solution.

Back 1

hypotonic

Front 2

Water moves out of a cell if the cell is placed in a(n) _____ solution.

Back 2

hypertonic

Front 3

If cells are placed in a strong sugar solution, water will _____.

Back 3

pass from the cells to the sugar solution

Front 4

A cell moves particles from a region of lesser concentration to a region of greater concentration by _____.

Back 4

active transport

Front 5

If it is not watered, a tulip plant wilts because it _____.

Back 5

loses turgor pressure

Front 6

If a cell is placed in salt water, water leaves the cell by _____.

Back 6

osmosis

Front 7

List 3 forms of passive transport

Back 7

osmosis
diffusion
facilitated diffusion

Front 8

The structure most responsible for maintaining cell homeostasis is the _____.

Back 8

plasma membrane

Front 9

List 3 causes of cancer.

Back 9

environmental influences

viruses

UV radiation

Front 10

A gene is a segment of DNA that controls the production of _____.

Back 10

proteins

Front 11

Which of the following monitors a cell's progress from phase to phase during the cell cycle?

Back 11

a series of enzymes

Front 12

What do enzymes do?

Back 12

They control the rate (or speed) of reactions. They can turn reactions on or off.

Front 13

If the sides of a cell double in length, its volume increases by _____ times.

Back 13

eight

Front 14

Which of the following explains why a cell's size is limited?

Back 14

Volume increases faster than surface area.

Homeostasis is disrupted by a cell that is too large.

Front 15

As a cell grows, its _____ increases more than its _____.

Back 15

volume, surface area

Front 16

List the steps of the cell cycle.

Back 16

interphase
prophase
metaphase
anaphase
telophase

Front 17

When people move from one country to another, their cancer rates follow the pattern of _____.

Back 17

the country where they live

Front 18

By the end of prophase, each of the following has occurred except _____.

Back 18

lining up of chromosomes in the cell

Front 19

Unlike plant cells, animal cells contain _____.

Back 19

centrioles

Front 20

The longest phase of the cell cycle is _____.

Back 20

interphase

Front 21

A chromatid is attached to a spindle fiber by the _____.

Back 21

centromere

Front 22

List the levels of organization in a complex organism such as a human.

Back 22

cells
tissue
organ
organ systems
organisms

Front 23

The structures that hold together sister chromatids are ____________________.

Back 23

centromeres

Front 24

In a dividing cell, the football-shaped structure consisting of thin fibers is the ____________________.

Back 24

spindle

Front 25

The process by which nuclear material is divided equally between two new cells is ____________________.

Back 25

mitosis

Front 26

The dark-staining structures that carry the genetic material are the ____________________.

Back 26

chromosomes

Front 27

The uncontrolled division of cells is known as ____________________.

Back 27

cancer

Front 28

The two halves of a doubled chromosome structure are called _________________________.

Back 28

sister chromatids

Front 29

The sequence of growth and division of a cell makes up the ____________________.

Back 29

cell cycle

Front 30

The phase of mitosis in which the sister chromatids separate from each other is ____________________.

Back 30

anaphase

Front 31

Cells that have the same function are organized into ____________________.

Back 31

tissues

Front 32

diffusion

Back 32

movement of particles from an area of higher concentration to one of lower concentration

Front 33

dynamic equilibrium

Back 33

continuous movement of particles but no overall change in concentration

Front 34

contractile vacuole

Back 34

structure inside protists that collects excess water and squeezes it outside through the membrane

Front 35

plasmolysis

Back 35

loss of water from a cell resulting in a drop in turgor pressure

Front 36

osmosis

Back 36

diffusion of water molecules through a selectively permeable membrane

Front 37

exocytosis

Back 37

release of wastes or cell products from inside to outside a cell

Front 38

Compare and contrast the structure and function of channel proteins and carrier proteins.

Back 38

Both are transport proteins embedded in the plasma membrane. Channel proteins enable passive transport to take place; channel proteins are tubelike and provide openings that allow dissolved particles to diffuse across the cell membrane. Carrier proteins generally have a shape that fits a specific molecule or ion. When the proper molecule binds with the carrier protein, it causes the protein to change its shape so that the particle is moved across the membrane. Once the particle is released, the protein returns to its original shape. In the case of active transport, energy is required by the carrier protein.