Carrier proteins are often used by the cell to transport ____
a. H2O
b. proteins
c. glucose and amino acids
d. steroid hormones
e. CO2
C
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In a dihybrid testcross, the individual being examined is crossed to which of the following?
A. An individual who is homozygous dominant for one trait but not the other B. Self-fertilized C. An individual who is homozygous recessive for both traits D. An individual who is heterozygous for both traits
In humans, having dimples in the cheeks is a dominant trait. If a child has dimples but only one of her parents does, what are the genotypes of her parents?
A. One parent dd, other parent DD B. one parent dd, other parent Dd C. one parent Dd, other parent DD D. one parent must be DD, the other parent could be either dd or Dd E. one parent must be dd, the other parent could be either Dd or DD
Coated vesicles known as ________ are thought to potentially be associated with cholesterol uptake and/or have a role in signal transduction.
Fill in the blank(s) with the appropriate word(s).
To which group of fishes does the following description apply: swim bladder, bony skeleton, and paired fins supported by bony rays.
A. Sarcopterygi B. Actinopterygi C. Chondrichthyes D. Placodermi E. Acanthodii