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Bio Q4 test, DNA to Proteins, Human Reproductive ...

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  • Where is mRNA formed?
    in the nucleus
  • Why are the codons important?
    When rRNA 'reads" the mRNA, the codon codes for a specific amino acid
  • What is a blastocysts?
    a hollow ball of cells that develops after the morula
  • In men, urine and semen are carried outside the body through the urethra. T or F
    True
  • Where does mRNA travel from/to?
    It travels from the cell's nucleus to the cytopasm.
  • tRNA
    contains 3 base pairs (anti-codon), one amino acid
  • What is found at the lower end of the uterus
    cervix
  • The basic building blocks of DNA or RNA are ----
    nucleotides
  • Which phase of the menstrual cycle does the endometrium tear away and blood vessels are ruptured?
    Flow phase
  • What are the codons for the protein, Lys
    AAA, AAG
  • Which phase of the menstrual cycle does the oocyte mature into an ovum?
    Follicular phase
  • What happens in the process of RNA processing? (mature/pre-mRNA)
    a cap is added; introns removed; poly-A tail is added.
  • What is rRNA
    two subunits of a ribosome
  • What is semen?
    Semen contains fluids, sperm and nurishment
  • Where is the anit-codon found?
    on tRNA
  • What are the female reproductive glands?
    ovaries
  • Why is the placenta important to a pregnacy?
    The placenta allows oxygen, nutrients, drugs and alcohol to be transported to the fetus and removes the waste from the fetus to the mother
  • What is the tube that connects the ovary to the uterus
    oviduct
  • What process triggers the production of testosterone in the testes?
    hypothalamus produces GnRH stimulating the pitutary gland to produce FSH & LH which is release in the blood to the testes.
  • Where does the baby develop?
    uterus
  • Which phase of the menstrual cycle does the corpus luteum break down?
    Luteal phase
  • UAA codes for which protein?
    no protein, stop
  • an ovum is ...
    a mature egg released by the ovary
  • How does testosterone affect boys?
    deepens their voice, broad shoulders, increased muscle mass, body hair; sperm production in testes
  • Where does fertilization take place?
    in the oviduct, near the ovary
  • If progesterone and estrogen are high, then FSH and LH are
    low
  • A morula is -----
    a solid ball of embryonic cells that forms before the blastocyst
  • What is mRNA?
    strands of RNA complementary to DNA
  • What is the mRNA sequence for a this template strand of DNA: TACG
    AUGC
  • What test is used to test a fetus's DNA?
    amniocentesis
  • Whys is the corpus luteum important for pregnancy?
    It produces progesterone, which keeps the endometrium from shedding.
  • What are codons?
    a set of 3 base pairs on mRNA
  • GCA codes for which protein?
    Ala
  • UCA codes for which protein?
    Ser
  • How does estrogen affect girls?
    widen hips, breast formation, egg production in ovaries; menstrual cycle
  • What part of the male reproductive system maintains sperm temperature?
    scrotum
  • Explain why a pregant woman should not consume drugs or alcohol during pregnancy.
    Drugs and alcohol will pass through the placenta/umbilical cord to the fetus. It is very harmful to the fetus.
  • What is removed from mRNA before it leaves the nucleus?
    introns
  • If progesterone and estrogen are low, then FSH and LH are
    high
  • What is puberty?
    growth period during which sexual maturity is reached, by producing offspring
  • Which phase of the menstrual cycle does ovulation occur?
    Luteal phase
  • Which phase of the menstrual cycle does the endometrium repair itself and stops bleeding?
    Flow phase
  • What is a codon for the comand start?
    AUG
  • What process happens outside the nucleus?
    translation
  • What processes occur in the nucleus?
    mRNA processing and transcription
  • What is the central dogma of biology?
    DNA codes for RNA; RNA is responsible for synthesis of proteins