How does epithelial tissue differ from connective tissue, in structure and function?
What will be an ideal response?
Epithelial tissue forms tightly connected sheets of cells that line surfaces. Connective tissue forms masses of cells that fill spaces and may link other tissues and provide support.
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Your parents are both heterozygous for the recessive disorder phenylketonuria (PKU). What is the
probability that you will have the disorder?
a. 25% regardless of the health of your 3 siblings b. 50% no matter whether or not you have siblings c. 75% no matter whether or not you have siblings d. 100% even if you are an only child e. 25% but only if your three siblings are healthy.
A rare genetic disorder called Gaucher disease may strike as many as one in 450 people of ____ descent
a. Middle Eastern
b. Western European c. African American d. British e. Eastern European
Refer to Figure 14-1. The area of the tryptophan operon labeled 3 is the:
a. promoter.
b. repressor gene.
c. ribosome.
d. RNA polymerase.
e. operator
Proteins are long chains or polymers made up of
A. nucleotides B. carbohydrates C. amino acids D. lipids