Which genus is MOST easily distinguishable from others below by occurring in packets of 8 or more?
A) Peptostreptococcus
B) Sarcina
C) Staphylococcus
D) Streptococcus
Answer: B
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An allele for a particular trait that is only expressed in the presence of a second copy of the same allele is called
A. dominant. B. codominant. C. incompletely dominant. D. recessive. E. pleiotropic.
The probability of a crossover occurring between two genes on the same chromosome _____
a. is unrelated to the distance between them b. decreases with the distance between them c. increases with the distance between them
As climate change continues, the prevalence of vector-borne disease has increased. Why is this?
A. Diseases are more contagious in warmer weather, so as climates have warmed, vector-borne diseases spread faster. B. The bacteria and viruses that cause disease multiply more rapidly in warmer weather, so as climates have warmed, the pathogens that cause disease are more prevalent. C. As climates have warmed and winters have become less severe, the range of mosquitos and ticks has increased, bringing with them the diseases they carry. D. As climates have changed, habitats have changed. Organisms that carry disease have been displaced from their original habitats and have found new habitats, bringing the spread of disease with them.
Discuss the role the brush border of the intestinal cells plays in the final digestive and absorptive steps of
carbohydrates, proteins and fats. What will be an ideal response?