Osteoporosis may result if the activity of osteoclasts outstrips the activity of osteoblasts
Indicate whether the statement is true or false
TRUE
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A population that is decreasing in size will have an age-structure histogram shaped like a(n):
A. pyramid, with a wide base at the bottom representing a large number of young individuals. B. rectangle, with an (roughly) equal number of individuals in each age group. C. inverted pyramid, with a narrow base representing a small number of young individuals. D. diamond, with a wide center depicting a large number of individuals that have reached reproductive maturity.
The process by which cells of a multicelled organism become specialized during development is called:
1.differentiation 2.transcription 3.translation 4.enhancement
Which of the following pairs of terms best describes the concept of membrane potential?
a) diffusion / facilitated diffusion b) concentration gradient / electrical gradient c) passive processes / active processes d) low concentration / high concentration e) selective permeability / osmosis
The genomes of most plant viruses consist of single stranded DNA
____________________ Indicate whether the statement is true or false.