________ bind two or more ions or molecules and transport them in opposite directions across a membrane.
A. Dual transporters
B. Uniporters
C. Symporters
D. Antiporters
E. Channel pumps
Answer: D
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Blood agar is both a differential and enriched medium.
Answer the following statement true (T) or false (F)
Which hormones produced by the adrenal gland might help to offset some of the symptoms of menopause?
What will be an ideal response?
How are new alleles formed?
A) Cells engineer new alleles as they mature. B) Chromosomes condense and mix within the cytoplasm to form new alleles. C) Mutations cause changes to the DNA nucleotide sequence. D) Individuals are able to change their DNA due to environmental pressures. E) Improperly folded proteins create novel phenotypes.
Mendel's Law of Segregation states that:
a. each diploid individual has two copies of every gene. b. only one copy of each gene is found in a gamete. c. traits from each parent are permanently blended in offspring. d. A and B. e. None of the above.