9th Grade Science Midterms
Terms
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- What always pairs w/ Thymine
- Adenine
- What always pairs w/ Cytosine
- Guanine
- What does the endocrine system use
- chemicals
- Where is a corpus luteum located
- In a female
- What comes out of the urethra
- glucose, acidin bases, basic solution, lubricant
- y r the testes outside the body
- the temp is lower
- what is the zona polusade
- gel-like cover of egg
- what does semenial fluid+sperm=
- semen
- what are primary follicles
- clusters of cells surrounding a single egg
- name 3 reproductive organs in a female
- ovary, uterus, vagina
- how many mature ovums do the ovaries usually produce
- 1 mature ovum
- fraturnal twins occur when..
- two or more are fertilized
- what is fsh
- follicle stimulation hormone
- what does the menstral cycle do
- preps uterus for egg
- fertilization occurs where
- fallopian tube
- how long does the menstral cycle last
- 28-29 days
- what is lh
- lutinizing hormone
- what is the begining of the menstral cycle
- menstration
- is the estrogen low or high during the mentral cycle
- low
- what is ovulation
- release of the egg
- what is the luteal phase
- when the egg travels through the fallopian tube
- what is menstration
- lining of the uterus is shed
- sperm+egg=
- fertilization
- fertilized egg=
- zygote
- embryo=
- 2 cells fertilized egg divides
- placenta
- nourishes embryo
- amnionic sac
- protects embryo
- morula
- solid ball
- baby=
- fetus during 2nd trimester
- trimester=
- 90 days
- blastocyst=
- hollow ball of cells
- implantation=
- blastocyst attaches to wall of uterus
- major organs take how long to form
- 3 months
- infancy=
- 4 weeks to 2 years
- childhood=
- infancy to puberty
- adults
- highest level of physical strength 25-35 years old
- sugar+phosphate+ nitrogenous base=
- nucleotide
- nucleotide form..
- ladder structure
- hydrogene bond form..
- g to c and t to a
- dna opens up to..
- get codes for making proteins
- helicase breaks hydrogen bond so..
- the dna can replicate
- pyrines are always w/
- pyrmadines
- pyrmadines are always w/
- pyrines
- meiosis=
- children
- mitosis=
- yourself
- plasmid=
- rings of dna in bacteria
- proteins are made of __ amino acids
- 20
- dna to rna is called
- transcription