174-209

Question 1

prophase I

Answer 1

crossing over is done here; genetic recombination occurs here

Question 2

induction

Answer 2

process in an embryo in which one tissue causes another to differentiate is called

Question 3

produced by the transcription process and is subsequently translated to form proteins

Answer 3

m-RNA

Question 4

transcription

Answer 4

DNA–>mRNA; occurs in nucleus

Question 5

where is chlorophyll found

Answer 5

thylakoid membrane

Question 6

rhizoids

Answer 6

root like absorptive structures in some fungi and plants

Question 7

islets of langerhans

Answer 7

represent a collection of alpha an dbeta ells of the pancreas. alpha secrete glucagon while beta cells secrete insulin

Question 8

cnidoblasts

Answer 8

specialized cells located in the tentacles and body wall of coelenterates ; interior filled by the stinging ells, nematocysts

Question 9

prolactin produced by …stimulates….

Answer 9

the anterior pituitary gland, stimulates milk secretion in mammals

Question 10

where is melanin produced

Answer 10

stratum germinativum

Question 11

stratum corneum

Answer 11

outermost layer containing the dead epithelial cells

Question 12

dermis

Answer 12

consists of connective tissue containing receptor muscles air follicles, sensory receptors, sweat and sebaceous glands

Question 13

pleurae

Answer 13

thin serous smooth membranous outer covering of the lungs

Question 14

alveoli

Answer 14

the basic respiratory unites where actua gas exchange occurs by passive diffusion

Question 15

sinus

Answer 15

cavity or hollow space in a bone

Question 16

peritoneum

Answer 16

tissue that covers all the digestive organs and lines the body cavity

Question 17

pinna

Answer 17

fleshy outer portion of the external ear

Question 18

stroke volume

Answer 18

Volume of blood that is discharged from the ventricles with each contraction ; end diastolic volume- end systolic volume

Question 19

cardiac output

Answer 19

stroke volume X heart rate

Question 20

achondroplasia

Answer 20

we see dwarfism ; affected indificual is less than 4ft 5 inches tall ; autosomal dominant inheritance

Question 21

progeria

Answer 21

we see autosomal recessive inheritance where premature aging is seen; before age 10 child has wrinkles , arthritis, hair thin and have arteriosclerosis

Question 22

steroid hormones are synthesized from

Answer 22

cholestrol

Question 23

where do carbon fixation occur

Answer 23

dark rxns

Question 24

substrate concentration at which the run rate is half of its maximal value

Answer 24

Km;vmax/2. different enzymes have different Km values

Question 25

early earths reducing atmosphere

Answer 25

NH3, H2, CH4, H2O CO, CO2

Question 26

animals and heart chambers

Answer 26

mammals and birds-4; fish-2; amphibians and reptiles- 3

Question 27

reproductive structure of an angiosperm

Answer 27

flower; divided into monocots and dicots

Question 28

when an AA enters the cytoplasm from a t-RNA it enters

Answer 28

ribosome

Question 29

when did eukaryotes and prokaryotes come on earth

Answer 29

0.5 bill years ago, 3.5 billion years ago

Question 30

longest mitotic stage

Answer 30

prophase

Question 31

whats N at anaphase

Answer 31

92, 4N

Question 32

ungulates

Answer 32

large hooved plant eating mammals such as giraffes seen in the african savanna