lo: swbat describe the connection between dna and proteins dn: what is a protein? what are the...
TRANSCRIPT
LO: SWBAT describe the connection between DNA and proteins
DN: What is a protein? What are the building blocks of proteins?
HW: Castle Learning- DNA
Proteins
• Long chains (polymers) of
• They are formed from different amino acids.
Amino acids
20
REMEMBER–The of amino acids
influences the proteins shape.
–The shape of a protein gives it it’s
sequence
function
DNA-PROTEIN CONNECTION
• contain coded information
• This information is used to make
that are required for it’s shape and function.
Genes
proteins
Where does protein synthesis take place?
RIBOSOMES
• Ribosomes construct proteins bases on the cell’s code.
• Parent and offspring produce similar
- that is why there is
between them. They produce similar
genetic
Characteristics/traits
resemblanceproteins
• Proteins are made using a person’s
(DNA)
• In order to do this, is used
genetic code
RNA
RNA
• • • stranded.• Nitrogenous bases are:
– A- adenine– U- uracil– C- cytosine– G- guanine
Instead of T (thymine),
A pairs up with U (uracil)
Ribonucleic AcidRibose (sugar)
single
Fill in the RNA strand:
DNA : C A G A T G T A A C T G T A A C T
RNA : G U C U A C A U U G A C A U U G A
**T from the DNA strand will still pair up with on the RNA strand, but A on the DNA
strand will pair up with on the RNA strand.
AU
There are two types of RNA. Both of them help with protein synthesis
Messenger RNA (mRNA)
• Copies genetic code from
• This is called
• Brings code to
*** remember, when it copies the code from DNA, A will pair up with - there will not by any in RNA.
DNA
transcriptionribosome
UT
Transfer RNA (tRNA)
Brings to the ribosome for protein assembly. This is called
amino acids
translation
Comparing DNA and RNA
DNA BOTH RNA
Double stranded larger
single stranded smaller
thymine uracil
deoxyribose ribose
nucleus 2 types
mRNA and tRNA
Genetic information
Nucleic Acid
Nucleotides
(sugar, phosphate, base)
1. DNA controls cellular activities most directly by coding for the synthesis ofa. inorganic compounds c. carbohydratesb. enzymes d. fatty acids
2. Which base is normally found in the synthesis of RNA but not in the synthesis of DNA?a. adenine c. uracilb. cytosine d. guanine
3.The care of a virus may contain either DNA or RNA. To identify which nucleic acid is present, a biochemist could chemically analyze the virus for the presence ofa. guanine c. cytosineb. ribose d. phosphate
4. Which of the following nucleic acids are composed of nucleotides?a. DNA only c. Messenger RNA onlyb. Transfer RNA only d. DNA, mRNA,
and tRNA
5. one similarity between DNA and mRNA is that they both containa. the same sugar c. uracilb. double stranded polymers d. genetic
code based on sequences
of bases