Bio/Biochem 2

Question 1

p53 checks what?

Answer 1

checkpoint at both G1/S and G2/M

Question 2

What happens during Prophase?

Answer 2

chromosomes condense Spindle forms

Question 3

What happens during metaphase?

Answer 3

Chromosomes align

Question 4

What happens during anaphase?

Answer 4

sister chromatids separate

Question 5

What happens during telophase?

Answer 5

New nuclear membrane forms

Question 6

When does crossing over occur?

Answer 6

Prophase I

Question 7

What is separated in meiosis I?

Answer 7

Homologous chromosomes

Question 8

What is separated during meiosis II?

Answer 8

Sister chromatids

Question 9

What are the two parts of the testes?

Answer 9

seminiferous tubules interstitial cells (of leydig)

Question 10

Where is sperm produced?

Answer 10

seminiferous tubules

Question 11

Pathway of sperm?

Answer 11

SEVE(N) UP Seminiferous tubules Epididymis Vas Deferens Ejaculatory duct Urethra Penis

Question 12

Where is sperm stored and where do the flagella get motility?

Answer 12

Epididymis

Question 13

What cells secrete testosterone?

Answer 13

Cells of leydig or interstitial cells

Question 14

What is the acrosome?

Answer 14

The “helmit” of the sperm that allows entrance into the ovum

Question 15

Where is estrogen and progesterone produced?

Answer 15

Ovaries

Question 16

What check is made at the G1/S checkpoint?

Answer 16

DNA viability check

Question 17

Which way does a synapse run?

Answer 17

dendrite to soma to axon

Question 18

What are ependymal cells?

Answer 18

line ventricles of brain, produce cerbrospinal fluid

Question 19

K+ is high in the outside or inside of neuron?

Answer 19

inside

Question 20

What ion is high outside of a neuron?

Answer 20

na+

Question 21

What does the Na+/K+ ATPase do?

Answer 21

pumps 3 Na+ out and 2 K+ in

Question 22

Is the outside or inside of a cell more negative?

Answer 22

inside

Question 23

What is the resting membrane potential?

Answer 23

-70mV

Question 24

What is the threshold for a neuron?

Answer 24

-55 to -40mV

Question 25

An action potential happens by what influx?

Answer 25

a Na+ influx

Question 26

A neuron is hyperpolarized by what happening?

Answer 26

K+ efflux

Question 27

What is an effector in neuron signals?

Answer 27

a neron that signals to a gland or msucle.

Question 28

When the action potential reaches the nerve terminal what happens?

Answer 28

voltage gated calcium channels open

Question 29

What is an example of a monosynaptic relfex arc?

Answer 29

knee-jerk reflex

Question 30

What is an example of a polysynaptic reflex arc?

Answer 30

withdrawal reflex

Question 31

Which type of nerve is on the dorsal side of the spinal cord?

Answer 31

sensory

Question 32

motor neurons are on which side of the spinal cord?

Answer 32

ventral

Question 33

In the spinal cord is the white matter superficial or deep?

Answer 33

superficial

Question 34

Where is the mitral valve?

Answer 34

Inbetween the left atrium and ventricle

Question 35

Where is the tricuspid valve?

Answer 35

Between the right atrium and ventricle

Question 36

Where is the cathode and anode in isoelectric focusing?

Answer 36

Anode = low pH Cathode = High pH

Question 37

What is a bottleneck effect?

Answer 37

When a human or environmental change drops the gene pool population. Like hunting, or storm

Question 38

Where is erythropoietin released from?

Answer 38

Kidneys

Question 39

What does the posterior pituitary release?

Answer 39

ADH and oxytocin

Question 40

What does the hypothalmus produce?

Answer 40

ADH Oxytocin

Question 41

What does the anterior pituitary gland produce?

Answer 41

FLAT-PEG Tropic-direct FSH LH ACTH TSH Prolactins Endorphins Growth Hormones

Question 42

What hormones does the adrenal gland produce?

Answer 42

Cortex (outer to inner) = Aldosterone \> Cortisol \> estrogen/testosterone Medulla = epinephrine and norepinephrine

Question 43

What does the luteinizing hormone do?

Answer 43

stimulates ovulation in females and testosterone formation in males

Question 44

What does cortisol do?

Answer 44

Increases glucose by increasing gluconeogenesis

Question 45

What are microfilaments used for?

Answer 45

Muscle movement Pseudopodia Support cellular membrane

Question 46

What is hydrostatic pressure?

Answer 46

The force pressure created by blood on vessel walls, pushes blood into interstitial fluid

Question 47

What is Plancks constant?

Answer 47

6.626 X 10^-34 J\*s

Question 48

What are the two equations needed for knowing the electromagnetic energy released from photon?

Answer 48

E = h*f* E = h\*c / λ

Question 49

A charge is moving in a magnetic field, what equation tells you what force is placed on it?

Answer 49

F = qvB q = charge v = velocity B = Magnetic field magnitude

Question 50

There are two magnetic right hand rules, the first is grabbing the wire, the second deals with magnetic force, what is it?

Answer 50

The force away from the palm is for a positive charge.... give a positive person high five The force away from the backhand is negative.... give a negative person the backhand

Question 51

Diamagnetic materials will have ______ electrons and will ______ magnets Paramagnetic/Ferromagnetic materials will have _______ electrons and will ________ magnets

Answer 51

paired/repel unparied/attract

Question 52

What is the difference between specific heat and heat capacity?

Answer 52

Heat capacity = mass\*specific heat c = cal / g\*K

Question 53

What does the pauli exclusion principle state?

Answer 53

No two electrons can have the same quantum numbers