A student uses a microscope to look at cells from a tree leaf and a fingernail. Which structure will the student see in the tree leaf cell that is not in the fingernail cell? A. mitochondria B. cilia C. cell wall D. ribosomes

Units of dna that encode for specific characteristics is called

In 1964, Nirenberg and Leder used the triplet binding assay to determine specific codon assignments. A complex of which of the following components was trapped in the nitrocellulose filter?

Since fibrinogen is made of chains of amino acids this is an example of which type of organic molecule

How many pairs of chromosomes exist in each of your cells?

The sickle-cell allele is considered to be pleiotropic because it

Which of the following correctly arranges the planets by the size of their diameter? A) Uranus < Neptune < Mercury < Earth B) Earth < Mercury < Neptune < Uranus C) Mercury < Earth < Saturn < Jupiter D) Jupiter < Saturn < Earth < Mercury

How does ultra radiation cause skin cancer

How many ribose molecules are found in ATP?

Would a person be squashed by extreme gravity, float with ease, freeze, burn up, or something else

According to "Life Without Gravity," why can astronauts' muscles become weak? A. Without gravity, the blood is rerouted from the legs to the head. B. Without gravity, the body "grows" by as much as several inches. C.