facts Flashcards
1
Q
function of rough endoplasmic reticulum
A
protein production
2
Q
function of smooth endoplasmic reticulum
A
cholesterol makes sex hormones
3
Q
function of liver cells
A
detoxifies drugs (sedatives, barbiturates, amphetamines)
4
Q
what does oxytocin do
A
shrinks uterus and reproduces milk production
5
Q
how many amino acids are there
A
20
6
Q
what are amino acids used to build
A
protein
7
Q
is a stop codon an amino acid
A
no
8
Q
what is it called when dna makes a copy of itself
A
replication
9
Q
explain the process of protein synthesis
A
- dna receives message to make protein
- directions in a single strand to nucleoli
- nucleolus signals rna
- summons mrna, which travels from ribosome to nucleolus to receive dna
- mrna goes back to the ribosome
- trna decodes mrna code (translation)
- goes to cytoplasm to look for correct amino acid (translation)
- attach amino acid and brings back to ribosome to build protein
- does that until there is a stop codon
10
Q
what are the bases for dna
A
at
cg
11
Q
what are the bases for rna
A
a–>u
t–>a
cg
12
Q
how long is the cilicia
A
short
13
Q
how long is the flagella
A
long
14
Q
how many pounds of dead skin cells does a person loose in a year
A
10
15
Q
why are skin cells lost
A
because of friction
