Vertebrates have a closed circulatory system with a(n) dorsal heart and blood containing hemoglobin. Indicate whether the statement is true or false
False - ventral
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Fresh water is much more dilute than the cells of a fish, so the animal constantly takes in water at its gills. How would a freshwater fish osmoregulate?
A. drink seawater and use active transport at the gills to take up salt from the water B. drink seawater and use active transport at the gills to get rid of excess salts C. produce dilute urine and use active transport at the gills to take up salt from the water D. produce dilute urine and use active transport at the gills to get rid of excess salt from the water E. drink saltwater and produce dilute urine to rid itself of excess salt
The process of using each strand of a DNA molecule as a template to form a new strand is called ________
A) semiconservative replication B) conservative replication C) transcription D) translation
The mass extinction currently taking place is most likely due to human activities
Indicate whether the statement is true or false
Which scientist disproved the theory of spontaneous generation?
A) Einstein B) Pauling C) Crick D) Watson E) Pasteur