Exam 1

Question 1

Cells are organized into __ and they are organized into ____

Answer 1

tissues, organs

Question 2

How many sperm can fertilize an egg or ovum

Answer 2

one

Question 3

the human chromosome has __ pairs

Answer 3

48

Question 4

semen contains

Answer 4

5% sperm and 95% glandular excretion

Question 5

infertility increases with

Answer 5

age

Question 6

impotence is also known as

Answer 6

erectile dysfunction

Question 7

If Y is not present the gonads develop into

Answer 7

ovaries

Question 8

true or false: more females born than males

Answer 8

false

Question 9

fertility drugs can cause

Answer 9

hyperovulation

Question 10

the amniotic membrane serves to seperate

Answer 10

maternal and fetal blood

Question 11

nondisjunction

Answer 11

failure of chromosomes to seperate

Question 12

in monosome they is a

Answer 12

missing chromosome

Question 13

down syndrome is linked to

Answer 13

maternal age

Question 14

true or false: with uniparental disomy the fetus has 2 extra chromosomes

Answer 14

false

Question 15

aneuploidy is an abnormal variation in

Answer 15

chromosome number

Question 16

Patau syndrome is fatal with death as early as

Answer 16

2 months

Question 17

T o F: Centromeres serve to prevent chromosomes from sticking together

Answer 17

false

Question 18

in preimplantation diagnosis: embryos are examined at the

Answer 18

8 cell stage

Question 19

sterile person with male phenotype

Answer 19

XXY

Question 20

Fetal heartbeat and movement felt

Answer 20

second trimester

Question 21

genotype for klinefelter syndrome

Answer 21

XXY

Question 22

Earliest amniocentesis can be done at

Answer 22

16 weeks

Question 23

average length of uterine/ menstrual cycle

Answer 23

28 days

Question 24

Which is not a macromolecule

Answer 24

Glucose

Question 25

Diploid chromosome number is 78, how many will one cell have

Answer 25

78

Question 26

Which organelle produces ATP energy

Answer 26

mitochondrion

Question 27

which organelle digests materials and cells

Answer 27

lysosome

Question 28

chromosomal sex

Answer 28

gender genes say you are, determined at conception

Question 29

Maria Patino and Calico cats

Answer 29

both phenotypically female

Question 30

endometriosis & risk for fertility

Answer 30

ectopic endometrial tissue that block fallopian tubes and interferes with ovulation

Question 31

genetic counselor will do what 2 things

Answer 31

create pedigree, and educate client

Question 32

basis for at home pregnancy test

Answer 32

HCG- hormone secreted in urine after eggs implants

Question 33

3 glands that add fluid to sperm

Answer 33

prostate gland, coupers gland, seminal vesicles

Question 34

3 causes of male infertilitiy

Answer 34

low sperm count
impotence
aspermia