Imagine that you are studying a new species. As you examine the circulatory system, you note that a four-chambered heart drives the blood in two directions simultaneously; to the body and to the lungs. What can you conclude about this animal? Check all that apply.
_____ It has double circulation.
_____ It has hemi circulation.
_____ It has single circulation.
_____ The circulatory route is similar to that of a trout.
_____ The circulatory route is similar to that of a snake.
_____ The circulatory route is similar to that of a gorilla.
__X__ It has double circulation.
_____ It has hemi circulation.
_____ It has single circulation.
_____ The circulatory route is similar to that of a trout.
_____ The circulatory route is similar to that of a snake.
__X__ The circulatory route is similar to that of a gorilla.
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Which of the following hormones is NOT produced by the adrenal gland?
A. epinephrine B. cortisol C. prolactin D. aldosterone E. norepinephrine
India is in which demographic transitional stage?
a. birth and death rates equally high; growth rate low b. death rate dropping fast; birth rate declining but slowly c. birth rates declining and approaching the death rates d. birth rate falling below death rate; population size decreasing e. death rate greatly exceeds birth rate; population is close to extinction
When only a small amount of ____ remains following several cell divisions, a cell stops dividing and dies
a. centromeres b. centrosomes c. acrosomes d. telomeres e. isomers
Plants, fungi and bacterial all have:
A. nuclei B. cell walls C. lysosomes D. mitochondria E. chloroplasts