If young people can buy condoms in a drugstore without a parents’ permission, why do you think it’s still so embarrassing for teens to buy condoms for themselves?

Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.

How many autosomes are in this human karyotype? how many sex chromosomes?