STAAR Biology

Question 1

Which of these is responsible for the “rough” appearance of endow lassie reticulum?

Answer 1

Ribosomes

Question 2

What is the total magnification used to view these onion cells through this microscope setup.

Answer 2

400x

The neck has a mangnification of 10 and the selected lense has 40, multiplying to 400.

Question 3

External sources, such as radiation or chemicalsm, can cause mutations in genes ir entire chromosomes. For a mutation to pass on to offspring, it must occur in a:

Answer 3

Sex cell

The sperm with 23 chromosomes (46 chromatids) and the egg with 23 add together to get 46 chromsomes. Each directy realates to the creation and muation of life in its infancy.

Question 4

Scientists believe that dinosaurs known as a hadrosaurus was a plant eater. What could best support this conclusion?

Answer 4

The fossolized teeth of the hadrosaurus are flat like the teeth of modern herbivores.

This is th emost scientifical evidence that take away the most hypothesisizing.