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