A) estrogens B) cilia C) sperm D) eggs
A) cervix B) ovary C) vagina D) uterus
A) contraception B) birth C) fertilization D) menstruation
A) steroids B) testes C) ovaries D) epididymis
A) eggs B) sperm C) estrogen D) testosterone
A) vas deferens B) epididymis C) cowper's gland D) urethra
A) menstrual B) dizygomatic C) tri-weekly D) reproductive
A) fertilization B) ovarization C) menstruation D) ovulation
A) ovulation B) menestration C) ovarization D) menstruation
A) semen B) proteins C) ribosomes D) nuclei
A) one fast sperm B) one super sperm C) one two-tailed sperm D) one healthy sperm
A) clone B) zygote C) spermatic cell D) ovum
A) 48 B) 46 C) 23 D) 8
A) placenta B) umbilical cord C) vagina D) uterus
A) a lot B) sometimes C) rarely D) a little bit
A) placenta B) uterus C) umbilical cord D) vagina
A) oviduct B) uterus C) placenta D) vagina
A) embryo B) sperm C) clone D) ovum
A) sections B) steps C) processes D) stages
A) 9 weeks B) 9 months C) 9 steps D) 9 stages
A) mammalian B) humans C) pregnant women D) humanid
A) adolescence B) adulthood C) infancy D) childhood
A) Later Years B) Childhood C) Adolescence D) Adulthood
A) A → B → C → D B) B → A → C → D C) C → B → D → A D) D → B → C → A
A) 6 B) 26 C) 48 D) 12
A) ovary provides a place for the internal development of the embryo B) testis produces nutrients for the offspring C) uterus produces testosterone used in egg production D) placenta allows nutrients to diffuse from the mother to the embryo
A) The weather becomes wetter for a short period of time. B) The squirrel stops using its claws for digging. C) The squirrel is exposed to radiation for several days. D) Oak trees gradually become less common.
A) Their blood systems are separate, but certain materials pass from one to the other. B) The blood flows directly from the mother into the fetus. C) Their blood systems are separate and no materials are exchanged. D) Their blood systems are separate only at certain times in development and connected at other times.
A) asexual reproduction B) genetic engineering C) biotechnology D) meiotic cell division
A) enslaved humans B) normal humans C) scientists D) cloned humans
A) several sperm cells will unite with an egg so the fertilized egg will develop properly. B) enough sperm cells will be present to transport the egg from where it is produced to where it develops into a fetus. C) at least one sperm cell will be reached when the eggs swim toward the sperm cells in the ovary. D) some of the sperm cells will survive to reach the egg.
A) 250 per second B) 2,500 per second C) 1,250 per second D) 1,000 per second
A) progesterone B) testosterone C) estrogen D) insulin
A) fetus → tissues → zygote → egg B) sperm → zygote → organs → tissues C) zygote → tissues → organs → fetus D) zygote → sperm → tissues → egg
A) All cells have different genetic material. B) Mutations occur during development as a result of environmental conditions. C) Developing cells may express different parts of their identical genetic instructions. D) Some cells develop before other cells.
A) active transport B) recombination of genes in gametes C) synthesis of proteins D) passive transport
A) heredity B) immunity C) evolution D) differentiation
A) fertilization → meiosis → mitosis B) mitosis → fertilization → meiosis C) meiosis → fertilization → mitosis D) fertilization → mitosis → meiosis
A) testosterone and insulin B) progesterone and estrogen C) estrogen and insulin D) progesterone and testosterone
A) It removes waste products that are produced in the cells of the fetus. B) It allows blood of the mother to mix with the blood of the fetus. C) It contains fluid that protects the embryo from harm. D) It synthesizes food for the embryo. |