COLOR THEME 1. Scanning electron microscopes are used to take pictures of very small objects, like viruses and
cells, that cannot be observed in a traditional compound microscope.
Influenza
Protist
Cell
Virus
O
O
Pictures are not
to scale
Both the influenza virus and the protist cell have projections that ex and beyond the main
structure. How are these projections used differently in viruses and protists?
V
st
CLEAR ALL

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.

If a human has 23 pairs of chromosomes in every muscle cell of its body how many chromosomes will be in a human egg or sperm