lesson 2
how does the human sense of taste work?
we have taste buds, and when we put food in our mouth it sends a single our brain.
what is the relationship between stimulus and receptor proteins?
stimulus is sensed by receptor proteins which send signals through the nerve cells to the brain
what is the connection between amino acids and proteins
amino acids are the building blocks of proteins
what is the connection between chromosomes, nucleus and cell
the nucleus is in the cell and the chromosomes are in the nucleus
how much did each of your parents contribute to your chromosomes
mom provided half of the chromosomes and dad provided the other half
what role does the nervous system play in the humans sense of taste and sight?
the nervous system plays a role in the senses of taste and sight by sending signals through different nerves
what is the connections between the function of a protein and its shape?
- the shape of the protein determines how it foundations
- differently shaped receptor proteins can send different signals to the brain
how is the shape of a protein related to the genetic code
- the genetic code determines which amino acids are used
- the order of the amino acids, which is determined by the genetic code
what is special about the 23rd pair of chromosomes in a human
if the 23rd pair is y shaped then their male but if its x then its female
explain why you have traits similar to you mom and dad
you get all your traits from you parents
how do humans see color?
light needs to hit cone cells then a signal travels from the eye to the brain through the optic nerve.
how do proteins determine traits
the shape of the protein or receptor proteins determines how it function
how does protein shape affect traits
differences in shape can cause protein to function differently which will cause differences in shape
what is the connection between alleles and the way proteins are built
alleles are versions of a gene with slight variations in the genetic code this variations determines how the protein will be built
explain why you have some traits the neither of your parents have
because sometimes your traits can come from your parents that didnt get passed down to your parents
how do our senses work?
by using specialized cells that send signals through the optic nerve
why do some humans see colors differently
in the opsin has a similar shape to another opsin, it will send a signal to the brain and color will be sensed differently
why do some people have differently shaped proteins
because their DNA is slightly different
where in our bodies are genes found
genes are found in the nucleus of almost every cell
can parents control which chromosomes they pass on to their offspring
no, parents cannot control which chromosomes they pass on to their offspring, the process of passing chromosomes to offspring is random
what did we learn in this lesson?
we learned how the sight and taste works.
what can cause differences in how our senses work
different shaped protein receptors can cause differences in how our senses work
what do you think caused Becky and Joes opsin proteins to have different shapes
somepne far from their family gave joe his genes and Becky got hers from her parents
what did we learn
genes are found in our cells
why don't we have all the same alleles as our parents
- when humans reproduce they cannot pass on all chromosomes
- each parent can only pass down one chromosome from each pair
- which chromosomes you get from your parents is random