One difference between gram-positive and gram-negative bacteria is that
A) gram-positive bacteria have more peptidoglycan in their cell walls.
B) gram-positive bacteria have fimbriae but gram-negative bacteria do not.
C) gram-positive bacteria are spiral-shaped, and gram-negative bacteria are either rod-shaped or spherical.
D) only gram-negative bacteria can form endospores.
Answer: A
You might also like to view...
The adaptations of species involve
a. form. b. function. c. behavior. d. life history patterns. e. all of these.
Which of the following terms is LEAST related to the other terms?
a) oxygen. b) stomata. c) carbon dioxide. d) transpiration.
Familial hypercholesterolemia is a disease that is incompletely dominant. This means that
A. the dominant allele completely masks the recessive allele, so the dominant phenotype is displayed. In the case of familial hypercholesterolemia, heterozygotes will have extremely high levels of cholesterol, identical to those seen in homozygous dominant individuals. B. the dominant allele does not fully mask the recessive allele, so an intermediate phenotype is displayed. In the case of familial hypercholesterolemia, heterozygotes have moderately higher levels of cholesterol compared to normal. C. the dominant allele is equally dominant with a second (or third) dominant allele, so both phenotypes are displayed. In the case of familial hypercholesterolemia, heterozygotes have moderately higher levels of cholesterol compared to normal. D. multiple alleles exist for this trait, so multiple phenotypes are possible. In the case of familial hypercholesterolemia, heterozygotes can have a range of cholesterol levels depending on which combination of alleles exists.
Homo floresiensis is a relatively new find of fossils from:
A) Africa. B) Australia. C) Indonesia. D) Europe.