Life science

Question 1

Can organic molecules burn

Answer 1

no it can not

Question 2

What type of molecule (organic or in organic) is Lipids and Proteins

Answer 2

Organic molecule

Question 3

What type of molecule (organic or inorganic) posses carbon

Answer 3

organic

Question 4

Is CO2 an organic or inorganic molecule

Answer 4

inorganic

Question 5

does organic and inorganic molecules both originate from living organisms

Answer 5

no, only organic molecules

Question 6

Is water organic or inorganic

Answer 6

inorganic

Question 7

What are inorganic compounds used for by living organisms

Answer 7

Metabolism

Question 8

How do you test for starch

Answer 8

Take iodine and dip into your object that you want to test, If it stays the same color then no starch is present but if it turns a blue-black color then starch is present

Question 9

enzymes: The ——— is where items can bind and that item is called a ————.

Answer 9

1. active site
2. substrate

Question 10

What happens when a enzyme combines with a substrate

Answer 10

usually the substrate is held there with weak bonds, The active site then changes shape which is called “induced fit” the enzyme can build up or break down the substate and we call the resulting item “the product”

Question 11

what other molecules can help an enzyme

Answer 11

cofactors and coenzymes

Question 12

what happens to a enzyme when the pH or the Temp. changes to drastically

Answer 12

The enzyme will become denatured

Question 13

what is the definition of Denatured

Answer 13

Distorted and can no longer bind to substrate

Question 14

TIP: enzymes often end in ———

Answer 14

-ase- (lactase)

Question 15

TIP: sugars often end in ———

Answer 15

-ose- (lactose)

Question 16

What does cholesterol do

Answer 16

It digests fats
keep the body healthy
makes vitamin D and hormones

Question 17

75% of blood cholesterol is produced by ——-

Answer 17

Liver and other cells

Question 18

Where do you get 25% of your cholesterol from

Answer 18

The food you eat

Question 19

Cholesterol is only found in what type of products

Answer 19

animal products

Question 20

Recall 3 types of cholesterol

Answer 20

Low density lipoproteins
high density lipoproteins
triglycerides

Question 21

Can cholesterol dissolve in blood

Answer 21

NO

Question 22

What transports cholesterol from and to the cells

Answer 22

lipoproteins

Question 23

What is plaque

Answer 23

It is a thick deposit that builds up in your arteries that makes them thick and hard

Question 24

in which arteries does the plaque build up in

Answer 24

the arteries that runs from and to your heart and brain

Question 25

what is the condition called that has to much plaque in their arteries

Answer 25

atherosclerosis

Question 26

What problems can cholesterol cause

Answer 26

heart attack and stroke

Question 27

what is the makeup of a chloroplast

Answer 27

double membrane, thylakoid, granum, intergranum, stroma, starch granule

Question 28

where is chlorophyll found

Answer 28

inside the thylakoid

Question 29

what is excretion

Answer 29

waste products are removed out of the body

Question 30

what is secretion

Answer 30

necessary substances that are released on or inside the body

Question 31

what is the makeup of a chromosome

Answer 31

chromatids, centromere, gene

Question 32

what forms the spindle fibres during cell division

Answer 32

centrioles

Question 33

what binds more than one chromatid together

Answer 33

centromere

Question 34

what is the definition of diffusion

Answer 34

The movement of gases or dissolved substances from a high to low concentration until equilibrium is reached NOTE: can take places with or without membranes. Passive process - no energy needed.

Question 35

what is the definition of Osmosis

Answer 35

the movement of water molecules from a high to low water potential, over a selectively permeable membrane, until equilibrium is reached NOTE: Always over a membrane. Passive process - No energy needed.

Question 36

what is the definition of active transport

Answer 36

the movement of gasses or dissolved substances from a low to high concentration (against the concentraition gradient) unsing energy (ATP molecules) until equilibrium is reached. NOTE: always over a membrane. The only active process - energy needed

Question 37

what is a cell membrane

Answer 37

is semipermeable but by doing so, it keeps things in the cell stable

Question 38

what is "semipermeable"

Answer 38

only select molecules can get in or out

Question 39

is cytoplasm found in prokaryote's or eukaryote's or both

Answer 39

both

Question 40

what is the cytoskeleton

Answer 40

a collection of fibres that can provide support for its cells and organelles and can play a big role in cell movement

Question 41

what are ribosomes

Answer 41

that are not membrane bound organelles found in both prokaryote's and eukaryotes that make protein and can be free in cytoplasm or attached to other organelles

Question 42

Does prokaryote's have DNA

Answer 42

yes, but not in a nucleus

Question 43

does prokaryotes have a nucleus

Answer 43

no it does not

Question 44

does prokaryotes have cytoplasm

Answer 44

yes

Question 45

does eukaryotes have cytoplasm

Answer 45

yes

Question 46

does eukaryotes have a nucleus

Answer 46

yes and it contains the DNA

Question 47

does prokaryotes and eukaryote both have ribosomes and cell membranes

Answer 47

yes

Question 48

which of the two (prokaryotes or eukaryotes) has membrane bound organelles

Answer 48

eukaryotes

Question 49

What is a Nucleus

Answer 49

it holds genetic material and controls cell activities, inside of a nucleus is a nucleolus

Question 50

what does the nucleolus do

Answer 50

it produces ribosomes

Question 51

what is the endoplasmic reticulum

Answer 51

It is attached to the nuclear membrane. endoplasmic reticulum (ER) does a lot of processing of molecules and transports molecules. There is a rough ER and a smooth ER

Question 52

What is the difference between a rough ER and a smooth ER

Answer 52

Rough ER means that there are ribosomes attached, smooth ER means that there are no Ribosomes attached

Question 53

what is the function of the Rough ER

Answer 53

involved in protein production and transportation. A molecule that leaves the ER can be sent away in a Vesicle

Question 54

What is the function of the smooth ER

Answer 54

It is involved the detoxification and can make types of lipids

Question 55

what is the Golgi apparatus

Answer 55

It can reserve items from vesical that came from the ER. It has enzymes that can modify molecules and can sort the material it reserve. It can determine where to send those molecules. It can be secreted.

Question 56

what is the functions for the mitochondria

Answer 56

Makes ATP energy in a proses called cellular respiration. Runs on glucose and needs oxygen to effectively make ATP