BIOL 2402 Exam 5 Questions With Complete Solutions
4 phases in meiosis I Correct Answers - prophase I:
+ involves synapsis to pair homologous chromosomes
+ cross over occurs (exchange of genetic material between
homologous chromosomes to produce chromosomes with genes
from both parents)
- metaphase I:
+ chromosomes line up on midline of spindle
- anaphase I:
+ homologous chromosome pairs separate
+ each daughter cell receives one replicated member of each
chromosome pair
+ reduces chromosome number in half
- telophase I:
+ cell divides completely forming 2 new daughter cells
a circumcision removes Correct Answers prepuce (foreskin)
a Pap smear is used to detect abnormal cells in the Correct
Answers cervix
a Pap smear is used to detect cancer cells in the Correct
Answers cervix
adolescence Correct Answers - puberty to adulthood
- becomes reproductively functional
- growth spurts in skeletal and muscular systems
- under hormonal control , females mature and reach full growth
at earlier ages than males
- motor skills develop
,- intellectual abilities continue to mature
- continued development of emotional maturity
adulthood Correct Answers - adolescence to old age
- by 30, body becomes less efficient
- degenerative changes begin after age 30; senses are less acute,
ligament elasticity decreases
- during 40s people gain weight as metabolic rate decreases, hair
may turn gray or fall out, muscles lose strength, skin wrinkles,
arteries and arterioles narrow
- during 50s close vision is lost, nail growth slows, taste buds
die, skin loses elasticity, menstrual cycle stops, muscle mass and
weight decrease
- during 60s may have memory loss
- by 70 height decreases, skin sags and connective tissue is lost
amniotic fluid Correct Answers - fills space between
embryonic disc and amnion
- protects and cushions embryo and keeps constant temp
amniotic fluid Correct Answers protects the embryo against
being jarred by movements
blastocyst Correct Answers hollow ball of cells that attaches to
endometrium of uterus
blastomere Correct Answers An early embryonic cell arising
during the cleavage stage of an early embryo.
bulbourethral glands Correct Answers - cowpers glands
- inferior to prostate gland
, - secrete mucus like fluid into urethra
- fluid released in response to sexual stimulation
- lubricates end of penis
causes of female infertility Correct Answers - anolvulation:
hyposecretion of FSH and LH fro anterior pituitary and resulting
lack of ovulation
- endometriosis: endometrial tissue grows in abdominal cavity;
fibrosis occurs which may encase ovary or obstruct uterine tubes
- infections like gonorrhea that obstructs the uterine tube or
cause production of a viscous mucus that prevents sperm from
entering uterine tube
causes of male infertility Correct Answers - inflammation of
testes from diseases (mumps)
- poor quality sperm (abnormal head, acrosome or tail)
- low sperm count
chemicals that make semen Correct Answers citric acid, free
amino acids, fructose, enzymes, phosphorylcholine,
prostaglandin, potassium, and zinc.
childhood Correct Answers - one year old to puberty
- growth rate is high
- primary teeth come in and then permanent teeth replace
- voluntary muscular control is achieved; learns to walk, run and
climb
- bladder and bowel control
- communication skills are learned (speaking, reading, writing
and thinking)
- emotions mature
4 phases in meiosis I Correct Answers - prophase I:
+ involves synapsis to pair homologous chromosomes
+ cross over occurs (exchange of genetic material between
homologous chromosomes to produce chromosomes with genes
from both parents)
- metaphase I:
+ chromosomes line up on midline of spindle
- anaphase I:
+ homologous chromosome pairs separate
+ each daughter cell receives one replicated member of each
chromosome pair
+ reduces chromosome number in half
- telophase I:
+ cell divides completely forming 2 new daughter cells
a circumcision removes Correct Answers prepuce (foreskin)
a Pap smear is used to detect abnormal cells in the Correct
Answers cervix
a Pap smear is used to detect cancer cells in the Correct
Answers cervix
adolescence Correct Answers - puberty to adulthood
- becomes reproductively functional
- growth spurts in skeletal and muscular systems
- under hormonal control , females mature and reach full growth
at earlier ages than males
- motor skills develop
,- intellectual abilities continue to mature
- continued development of emotional maturity
adulthood Correct Answers - adolescence to old age
- by 30, body becomes less efficient
- degenerative changes begin after age 30; senses are less acute,
ligament elasticity decreases
- during 40s people gain weight as metabolic rate decreases, hair
may turn gray or fall out, muscles lose strength, skin wrinkles,
arteries and arterioles narrow
- during 50s close vision is lost, nail growth slows, taste buds
die, skin loses elasticity, menstrual cycle stops, muscle mass and
weight decrease
- during 60s may have memory loss
- by 70 height decreases, skin sags and connective tissue is lost
amniotic fluid Correct Answers - fills space between
embryonic disc and amnion
- protects and cushions embryo and keeps constant temp
amniotic fluid Correct Answers protects the embryo against
being jarred by movements
blastocyst Correct Answers hollow ball of cells that attaches to
endometrium of uterus
blastomere Correct Answers An early embryonic cell arising
during the cleavage stage of an early embryo.
bulbourethral glands Correct Answers - cowpers glands
- inferior to prostate gland
, - secrete mucus like fluid into urethra
- fluid released in response to sexual stimulation
- lubricates end of penis
causes of female infertility Correct Answers - anolvulation:
hyposecretion of FSH and LH fro anterior pituitary and resulting
lack of ovulation
- endometriosis: endometrial tissue grows in abdominal cavity;
fibrosis occurs which may encase ovary or obstruct uterine tubes
- infections like gonorrhea that obstructs the uterine tube or
cause production of a viscous mucus that prevents sperm from
entering uterine tube
causes of male infertility Correct Answers - inflammation of
testes from diseases (mumps)
- poor quality sperm (abnormal head, acrosome or tail)
- low sperm count
chemicals that make semen Correct Answers citric acid, free
amino acids, fructose, enzymes, phosphorylcholine,
prostaglandin, potassium, and zinc.
childhood Correct Answers - one year old to puberty
- growth rate is high
- primary teeth come in and then permanent teeth replace
- voluntary muscular control is achieved; learns to walk, run and
climb
- bladder and bowel control
- communication skills are learned (speaking, reading, writing
and thinking)
- emotions mature
