Biology 7.0 Homeostasis deck

Question 1

What does the cytoskeleton do for the cell?

Answer 1

It forms a framework for the cell and is an anchor for organelles

Question 2

What are microtubules?

Answer 2

long hollow protein cylinders that form a rigid skeleton for the cell and moves substances within the cell

Question 3

Why do cells have certain shapes?

Answer 3

because Microfilaments give it its shape and helps the cell to move.

Question 4

What stores DNA and RNA, as well as stores information to used to make proteins, that determine a cell’s growth and function?

Answer 4

A Nucleus

Question 5

What organelles manuafacture/make proteins?

Answer 5

Ribosomes

Question 6

What is a ball like structure inside of the nucleus that produces ribosomes?

Answer 6

Nucleolus

Question 7

What does the Endoplasmic Reticulum do?

Answer 7

it’s a membrane system of folded sacs and interconnected channels that serve as a site for protein and lipid synthesis.

Question 8

What are two types of endoplasmic reticulum?

Answer 8

rough(protein) and smooth(hormones and lipids)

Question 9

What does the Golgi apparatus do?

Answer 9

it modifies, sorts and packages proteins.

Question 10

What is the function of vesicles?

Answer 10

to fuse plasma membrane, and to release proteins into te environment.

Question 11

What is a vacuole and where is it found?

Answer 11

A membrane bound sac used for temporary storage. It’s almost allways found in plant cells.

Question 12

Define Lysosomes.

Answer 12

vesicles that contain substances that digest excess organelles and food particles.

Question 13

When are centrioles made?

Answer 13

They are made from groups of microtubules that finction during cell division.

Question 14

What is the function of the mitochondria?

Answer 14

to convert fuel particles into usable energy.

Question 15

What is the function of chloroplasts?

Answer 15

capture light and convert it into chemical energy.

Question 16

What is a cell wall and what is it made out of?

Answer 16

thick, rigid, mesh of fibers that surroun dthe outside of the cell, made of celulose

Question 17

In active transport what does it cross and does it require energy or not?

Answer 17

It crosses the concentration gradient, and it requires energy

Question 18

In a hypertonic solution, what happens to cells?

Answer 18

Animal cells shrivel up because the water moving in is lesser than coming out, the net movement of water is out of the cell.

Question 19

How do plant cells and animals cells react differently to a hypotonic solution?

Answer 19

In a hypotonic solution, cells becme overflowed with an excess of water because more water is going in than coming out. An animal cell would burst completely in a hypotonic solution, but in a plant cell, the cell wall protects the cell from water but some water gets through, so the plant cell swells.

Question 20

What are two statments about sodium-pottasium ATPase pump?

Answer 20

It’s found in the plasma membrane of cells and it maintains the level of sodium ions and pottasium ions inside and outside of the cell.

Question 21

When changes happen in the environment of a cell, how do passive and active transports help the cell?

Answer 21

by moving materials across the cell membrane

Question 22

together, the different types of transport allow a cell to interact with its environment while maintaining ____.

Answer 22

homeotasis

Question 23

What is another name for carbohydrates attached to proteins?

Answer 23

Glycoproteins

Question 24

Which is the model that describes the phospholipids in the bilayer as a “sea” in which other molecules can float?

Answer 24

Fluid Mosaic Model