hesi bio Flashcards

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1
Q

make ATP (organelle)

A

mitochondria

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2
Q

small particles found on rough ER. Site of protein synthesis.(organelle)

A

ribosomes

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3
Q

responsible for DNA activities. surrounded by nuclear envelope.(organelle)

A

nucleus

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4
Q

storage vesicles for digestive enzymes (organelle)

A

lysosome

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5
Q

produces protein. has ribosomes.(organelle)

A

rough er

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6
Q

endoplasmic reticulum(organelle)

A

transports substances within the cell

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7
Q

found only in the cells of plants. Photosynthesis occurs here(organelle)

A

chloroplasts

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8
Q

storage, modification, and packaging of secretory products (organelle)

A

Golgi apparatus

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9
Q

membrane bound organelles which contain powerful oxidative enzymes (organelle)

A

peroxisomes

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10
Q

store material, mostly in plants (organelle)

A

vacuole

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11
Q

function is cell division, only in animal cells (organelle)

A

centrosome & centriole

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12
Q

hair like extensions from the cytoplasm of the cell. allow movement and ingestion of unicellular organisms (organelle)

A

cilia and flagella

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13
Q

double layer of lipids which surrounds the cell. Membrane is semi permeable; permeable to water not solids.

A

cell membrane

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14
Q

the migration of molecules of ions, as a result of their own random movements, from a region of higher concentration to a region of lower concentration.

A

diffusion

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15
Q

the movement of water through a semipermeable membrane.

A

osmosis

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16
Q

type of transport: movement of ions and molecules AGAINST a concentration gradient. The cell must expend energy

A

active transport

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17
Q

type of transport, no energy is needed

A

passive transport

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18
Q

when a cell is in osmotic balance, because it contains the same concentration of osmotically active particles.

A

isotonic

19
Q

when a cell loses water and shrivels up

A

hypertonic

20
Q

when a cell gains water, because the cell contains a lower concentration of osmotically active particles. cell swells up.

A

hypotonic

21
Q

the basic food making process through which inorganic CO2 and H20 are transformed to organic compounds. Chloroplasts absorb light and use CO2 and H20 to synthesize carbs. uses sunlight to make food.

A

photosynthesis

22
Q

a process in which the energy in glucose is transferred to ATP.

A

cellular respiration

23
Q

used in cellular respiration, must be activated before it can break down and release energy

A

glucose (c6h12o6)

24
Q

during cellular respiration: when pyruvic acid is formed how many ATP molecules are gained?

A

2

25
Q

steps in cellular respiration

A

glycolysis. pyruvate. Krebs cycle

26
Q

cycle in which the carbon chains of amino acids, fatty acids, and carbohydrates are metabolized to yield CO2. Pyruvic acid is converted to acetyl coenzyme A. citric acid is formed.

A

citric acid (Krebs) cycle

27
Q

a co enzyme essential for the breakdown of glucose. when bonds are hydrolyzed, a large amount of energy is relapsed.

A

ATP

28
Q

protein catalysts. allows reaction to occur more rapidly.

A

enzyme

29
Q

liquid part of the blood which constitutes 55% of the total blood volume. Essential for homeostasis. (blood cells constitute other 45%)

A

Plasma

30
Q

most numerous of the thre blood cell types. Formed in the marrow of the bones. carry oxygen to all parts of the body, move some carbon dioxide.

A

red blood cells (erythrocytes)

31
Q

blood cell that lacks hemoglobin. protect the body against disease. (types: neutrophils, lymphocytes, monocytes, eosinophil, basophils)

A

white blood cells (leukocytes)

32
Q

leukocytes are what kind of blood cells?

A

white

33
Q

erythrocytes are what kind of blood cells?

A

red

34
Q

cell fragments which are produced by large cells in the bone marrow. Play an important role in blood clotting.

A

platelets

35
Q

functions of blood?

A

transport materials to and from all tissues of the body. Defends body against infections disease.

36
Q

automatic maintenance of a steady state within the bodies of all organisms. Tendency of organisms to maintain constant the conditions of their internal environment, by responding to both internal and external changes.

A

homeostasis

37
Q

liquid at room temperature. have one or more double bonds.

A

Unsaturated fats

38
Q

mitosis vs. meiosis?

A

meiosis is sex cell production

39
Q

the genetic material of a cell. contains genetic code that is necessary for replication.

A

DNA

40
Q

both alleles are the same

A

homozygous

41
Q

both alleles are different

A

heterozygous

42
Q

structure of DNA

A

adenine, thymine, guanine, cytosine

43
Q

result of electron transport chain?

A

32-36 ATP

44
Q

no double bonds in their tail. solid at room temp.

A

saturated fat.