Amoebas move from place to place by means of their
A. pseudomonads.
B. plasmodia.
C. cysts.
D. sporocarps.
E. pseudopods.
Answer: E
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In the internal leaf structure shown above, the item labeled "4" is
a. a vascular bundle. b. spongy mesophyll. c. epidermis. d. a stoma. e. palisade mesophyll.
Cell differentiation _____
a. occurs in all complex multicelled organisms b. requires unique genes in different cells c. involves selective gene expression d. occurs in all complex multicelled organisms and involves selective gene expression e. all of these
In Goodpasture's Syndrome, the destruction of the kidneys results in BUN, or blood urea nitrogen. These levels, along with _____ are increased.
Fill in the blank(s) with the appropriate word(s).
Answer the following questions using the group of answers below.
A. In a dihybrid cross between a parent that is a double heterozygote (Aa Bb) and a parent that is homozygous recessive for one gene and heterozygous for the other (aa Bb), how many unique phenotypes potentially will be present in their offspring? B. In a dihybrid cross between a parent that is a double heterozygote (Aa Bb) and a parent that is a double homozygous recessive (aa bb), how many unique phenotypes potentially will be present in their offspring? C. In a dihybrid cross between a parent that is a double heterozygote (Aa Bb) and a parent that is homozygous dominant for one gene and heterozygous for the other (AA Bb), how many unique genotypes potentially will be present in their offspring? D. E. Animal species X is tetraploid (4n = 12). Following gene duplication and translocation, a given gene is found on each chromosome. How many alleles for this gene can be present in an individual of this species? F. Plant species X is diploid (2n = 24) and has a quantitative trait, the expression of which is controlled by gene loci on each of its chromosomes. What is the maximum number of alleles for this trait that any one individual of species X could have?