Exam 1

Question 1

when an erethrocyte is inserted into water it will

Answer 1

swell and burst

Question 2

le chandeliers principle states that

Answer 2

any effect applied on a system in an equilibrium state will result in a compensatory effect by the system in order to return to equilibrium

Question 3

characteristics of a buffer solution

Answer 3

It can resist changes to PH when acid or base is added to it and it can be composed of a weak acid and it’s conjugated base

Question 4

What is true for oxidation?

Answer 4

removal of electrons, one of the processes that contributes to bioenergetics, it is coupled to reduction

Question 5

hydrogen bond can be formed between identical molecules of which substance ?

Answer 5

NH3

Question 6

the 3p subshell can accommodate a maximum number of

Answer 6

6 electrons

Question 7

the relatively high boiling point of water can be explained by what bonds ?

Answer 7

hydrogen

Question 8

the mass of a neutron

Answer 8

Is much greater than the mass of an electron

Question 9

cellulose and starch are similar in

Answer 9

the chemical formula of their monometric units

Question 10

all of the following are true regarding mitochondria except

Answer 10

It is the site of protein synthesis

Question 11

glycogen is stored in the

Answer 11

liver and striated muscles

Question 12

the following are needed to be taken up regularly by the human body

Answer 12

essential fatty acids

Question 13

most of the CO2 we exhale is produced in the

Answer 13

citric acid cycle

Question 14

What is true of the cell nucleus

Answer 14

bounded by a double membrane, freely permeable to proteins, site of the replication process

Question 15

hemoglobin is

Answer 15

protein, responsible for delivery of oxygen, found in RBC, contains iron

Question 16

What is true for enzyme molecules

Answer 16

most are proteins, they increase velocity of chemical reaction

Question 17

What is true concerning carbohydrates

Answer 17

can be converted into fat, glucose had 6 C atoms, starch is synthesized by plants

Question 18

the primary structure of proteins is determined by

Answer 18

reptide bonds

Question 19

which base is not found in DNA

Answer 19

uracil

Question 20

hydrolysis of sucrose will yield

Answer 20

an aldehydes and ketone

Question 21

which compounds are constituents of nucleosides

Answer 21

purine/perymadine base, and Pentose

Question 22

which is not true concerning glycogen

Answer 22

It can be found mainly in adipose tissue

Question 23

the secondary structure of proteins is established by

Answer 23

hydrogen bonds

Question 24

steroid hormones are

Answer 24

lipids

Question 25

What is true regarding amino acids

Answer 25

it contains amino and a carboxyl group

Question 26

which of the following statements regarding enzymes ie not true

Answer 26

they increase the rate of reaction by changing the eq in the direction of products

Question 27

phospholipids

Answer 27

are the main constituents of cellular membranes , and have polar and non polar parts

Question 28

main characteristics of glucose

Answer 28

It is the universal energy source it's a monossacharide, and oxygen is needed for it's complete decomposition

Question 29

What is true concerning nucleic acids

Answer 29

the total purine content of DNA is equal to the pyrimedine content

Question 30

which organelles cannot be found in all eukaryotic cells

Answer 30

chloroplast

Question 31

What is true concerning cholesterol

Answer 31

has a role in atherosclerosis, constituent of cellular membranes , precursor for steroid hormones, ampipathic, moves in blood in form of LDL and HDL

Question 32

which is true for oxidative phosphorylation (conversion of ADP into ATP while consuming oxygen)

Answer 32

takes place in the mitochondria ,produces energy,consumes oxygen

Question 33

tertiary structure of protein is determined by

Answer 33

vanderwalls bonds, H bond, hydrophobic interactions, ionic bond, disulfide bridge

Question 34

replication takes place in the _ transcription takes place in the _ and translation takes place in the _

Answer 34

nucleus , nucleus, RER or cytoplasm

Question 35

which group AA glycine belongs to

Answer 35

non polar

Question 36

microtubules compose

Answer 36

cytoskeleton, miotic spindle, cillia and flagella,

Question 37

The general mechanism of release of substances from cells is _______, and the intake of fluid droplets by a cell is ________

Answer 37

The correct answer is: Exocytosis // Pinocytosis

Question 38

The left ventricle is the strongest of the four chambers of the human heart because 

Answer 38

Forces blood through the systemic circulation. 

Question 39

blood pressure in human arterioles is

Answer 39

lower than in the arteries

Question 40

function of nasal epithelium

Answer 40

clean the entering air from dust

Question 41

What is reabsorbed In the kidney

Answer 41

water, glucose, amino acids , electrolytes

Question 42

which of the following structures are directly involved in the "systemic circuit"? 

Answer 42

left ventricle, aorta and inferior vena cava

Question 43

the triscupid valve is normally closed

Answer 43

while ventricles are in systole

Question 44

A thrombus in the first branch off the aortic arch would affect the flow of blood to the:  Select one:

Answer 44

Right side of the head and neck, and right upper arm

Question 45

lymphatic drainage from the right foot

Answer 45

goes through the thoracic duct

Question 46

deficiency of O2 in the blood is called

Answer 46

hypoxia

Question 47

location of the liver is

Answer 47

right upper quadrant of the abdomen

Question 48

structure which separates thoraic cavity from abdominal cavity

Answer 48

diaphragm

Question 49

During inspiration, the intrathoracic pressure: Select one:

Answer 49

The correct answer is: Becomes more negative compared to the atmospheric pressure.

Question 50

When the limb is moved towards the midline of the body, the muscular movement is called:

Answer 50

adduction

Question 51

Ulnoradial pertains to two bones of the

Answer 51

forearm

Question 52

behind the breastbone

Answer 52

retrosternal

Question 53

the efferent arteriole of the glomeruli

Answer 53

conducts blood from the glomeruli

Question 54

What is true for blood sugar level

Answer 54

It is important to be kept in a steady state, because brain needs a continuous supply of glucose.

Question 55

Which of the following body fluids do not contain sugar under physiological conditions? Select one:

Answer 55

urine

Question 56

Which is the correct order of structure during the formation of urine? Select one:

Answer 56

Glomerulus convulated tubules collecting tubules renalpelvis urether.

Question 57

Which statement is true about the skin?

Answer 57

a. The epidermis is composed of stratified keratinized squamus epithelium. b. It protects the body from loss of internal fluids and from invasion by foreign microorganisms. c. The major loss of skin (Exp. burn) can be fatal d. The innervation of the skin is better in the palms than in the back e. The superficial layer of it peals of all the time while the bottom layer divides to replace the missing cells.

Question 58

Active transport of substances from the blood into the nephron is called

Answer 58

tubular secretion

Question 59

Which of the following cells or substances are found in the human blood?

Answer 59

b. Immunoglobulin c. Nucleated leukocytes albumin

Question 60

Correct order of blood flow: Select one:

Answer 60

 left ventricle - aorta - arterioles - capillaries - venules - veins - right atrium - right ventricles pulmonary arteries - lungs - pulmonary veins left atrium - left ventricle

Question 61

During expiration, the volume of the thorax __________ as the diaphragm __________ . Select one:

Answer 61

decreases, relaxes

Question 62

Besides lubricating the visceral and parietal pleura, pleural fluid also

Answer 62

Holds the visceral and parietal pleural membranes together

Question 63

If pH decreases or PCO2 increases,  the amount of oxygen bound to hemoglobin will:

Answer 63

decrease

Question 64

the most important factor for regulating respiratory rate is

Answer 64

CO2 level in the blood

Question 65

Which is the correct order of the filtrate flow?

Answer 65

Glomerular capsule - PCT - loop of Henle - DCT - collecting duct

Question 66

The epithel lining the urinary bladder id called:

Answer 66

transitional epithel