This structure binds a particular molecule, changes shape, and moves the molecule across the membrane. It can move molecules down the gradient or against the gradient.

Congratulations on finishing Biology!! Remember to rip up your used scratch paper in front of the webcam.  If it wasn’t written on, show both sides to the webcam; no need to rip it up. Hope all of your hard work in this course gives you a good knowledge base for your future Biology courses.  Best of luck!!! P.S. Since many of you are animal lovers, thought I would share photos of our rescue puppy that we have enjoyed during these crazy COVID times.  Finn at 3 months and now.  🙂

In humans, color-blindness is an X- linked recessive trait.  A couple produces a color-blind son.  Which is the best and most probable explanation?

Nitrogen has an atomic number (number of protons) of 7.  How many electrons does the element nitrogen (N) have in its valence (outer) shell when it is not combined with another element?

Which results in glucose production?

What are restriction endonucleases?

When a yeast cell has oxygen, it completes ____________. When it has no oxygen, it completes _______________.

The diagram represents the process of PCR.  PCR is an abbreviation for __________.

This Punnet square correctly shows a cross between Hh x Hh.   The phenotypic ratio from this cross is:

In cats, the genes for coat color are X- linked on separate chromosomes.  Black is due to gene B and orange is due to its codominant allele, gene 0.  The heterozygous condition of XB X0 results in a calico cat. An orange male is mated with a calico female.  What percent of the offspring will be black males?