Ascientific claim can seem valid if it is supported by a controlled experiment and multiple trials.
which factor could make the claim invalid?
if it is posted in a scientific journal
if it is made by an expert in the field
if it benefits a company's profits
if it is accepted through a peer review

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii

Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f

Question 1 which of the following allows cells to take in fluids? a. phagocytosis b. pinocytosis c. exocytosis d. receptor-mediated endocytosis question 2 molecules move along their concentration gradient (from areas of high concentration to low concentration) using active transport mechanisms. a. true b. false question 3 which of the following powers active transport (ie. provides the energy for)? a. glucose b. transport proteins c. atp d. phospholipids question 4 what type of lipid is a major component of the plasma membrane? a. cholesterol b. phosopholipids c. proteins d. triglycerides