BIO-chapter 19

which of the following would be found in the oviduct immediately after fertilization

a zygote

the human embryo develops in a fluid-filled sac called the

amnion

which of the following methods of reproduction is NOT used by animals

asexual reproduction involving sperm and eggs

when is fetal development initiated

at the establishment of organ systems

some organisms switch from male to female, or vice versa. The most likely reason for the change is the

availability of environmental resources

which of the locations highlighted in this figure is the site of embryo implantation

b

which of the following forms of contraception is chemical in nature

birth control pills

which of the following statements about sexual reproduction in animals is true

both parents contribute genes to the offspring

which of the following statements accurately describes similarities between asexual and sexual reproduction in animals

both process generate offspring that carry parental genes

which of the following sequences places spermatogenesis in the correct order from start to finish

diploid precursor cell, primary spermatocyte, secondary spermatocytes, sperm

the contraceptive method that seals the female oviduct is

female sterilization

by the end of a normal first trimester, the zygote

has developed recognizable arms and legs

which of the following is a collection of organs

heart, lungs, and liver

the number of chromosomes in secondary spermatocytes is fewer than in primary spermatocytes because

homologous pairs are separated during meiosis 1

which of the following statements distinguishes gamete formation n human males from gamete formation in human females

human males make sperm throughout their lives, beginning at puberty, whereas human females are born with all the eggs that may be fertilized

which of the following terms describes how the male sperm and the female egg typically fuse in animals

internal fertilization

after about an hour of basking in the sun, the body temp of the marine iguana reaches 37*C, and the animal dives into the water to feed. In the water, its body temp rapidly drops, and the iguana must return to the rocks to warm up. this process is an example of

negative feedback

which of the following statements about negative feedback is true

negative feedback slows down or shuts off a process when a set point is reached

for homework, your instructor asks you to write a paragraph discussing how the mouth, stomach, and small intestines work together to process food items and provide nutrients to the body. Which level of biological organization are you studying

organ systems

how do living systems "know" the appropriate temperature or water content within that system?

organisms have a genetically predetermined set point that must be internally maintained

which of the following statements accurately distinguishes tissues from organs

organs consist of multiple tissue types, whereas tissues consist of one or more cell types

mature female eggs develop under the control of hormones within the

ovaries

which of the following sequences places the direction traveled by an egg in the correct order

ovary, oviduct, uterus, vagina

which of the following hormones is partially responsible for initiating labor contractions

oxytocin

when certain hormones are added to the uterus, they induce thickening in the cells lining its walls. which of the following hormones is likely to be responsible for this change

progesterone

a human female has a diploid chromosome number of 46 (2n=46). based on this info, which of the following cells is NOT properly matched with its chromosome number

secondary oocyte: 46 chromosomes

which of the following is a product of the first round of meiosis in males

secondary spermatocytes

which of the following is a type of epithelial tissue

skin

which of the following statements about human sperm and eggs is correct

sperm are much smaller than eggs

insulin is a protein hormone that helps cells use glucose. In type 1 diabetes, insulin-making cells in the pancreas are attacked and destroyed. this is an example of

the endocrine, digestive, circulatory, and immune systems affecting one another

which of the following is a product of meiosis 1 that is NOT in the lineage of ovum formation

the first polar body

disruptions to the development of a zygote can happen at any time during pregnancy. which of the following would be the most vulnerable time period in the development of zygote/fetus/embryo

the first week

in the last few weeks of pregnancy, the level of estrogen in the woman's blood rises. This increase causes

the muscles of the uterus to become more sensitive to the hormone oxytocin

sperm that is ejaculated from the body would pass through which of the following structures last

the penis

which cell in figure 19.7 is a diploid cell and contains duplicated chromosomes

the primary oocyte

some species of fish that live in the cold waters of the arctic ocean have evolved an "antifreeze" protein. why might this protein be important to homeostasis

the protein might prevent ice crystals from forming inside fish cells, which would prevent damage to the plasma membrane when temp are low

significant weight gain and the growth of hair on the head are events that occur during which trimester of pregnancy

the third trimester

which structure in the male reproductive tract has a function similar to that of the female fallopian tubes

the vas deferens

which of the following statements about hermaphrodites is true

they can mate with every individual of the same species that they encounter

during gestation, human development is divided into several stages called

trimesters

your friend tula, who is pregnant, learns that you are studying bio...based on your understanding of life in the womb, you would answer that she is about ___months preggers

5

which letter in figure 19.7 identifies a primary spermatocyte

B

which cell in this figure is the first to be haploid

C

which of the following forms of contraception is LEAST likely to prevent a woman from becoming pregnant

a male condom

during blood clotting, a broken blood vessel triggers a cascade of factors that collectively reduce blood loss. in this example, the clotting factors are functioning as part of

a positive feedback loop