Which of the following are tools and methods used to study cells? Check all that apply.

microscopy

cell culturing

immunostaining

DNA tagging

Which term defines one's age as measured by how well the body is working? chronological age biological age social age mental age

Jessica is a friend dislodge a piece of meat from her throat. she delivers five blows on her friend’s back with her fist and then gives him five abdominal thrusts. is jessica doing the procedure correctly? 1 no, she should use the heel of her hand for the blows. 2 no, she should use the side of her hand for the blows. 3 no, she should use her elbows to deliver the blows. 4 no, she should use a tennis ball to deliver the blows.

Can easily sweep pedestrians and vehicles downstream. 1 high winds 2 rain 3 floodwaters