What cellular structure must oxygen cross to get from outside to inside an animal cell

A radioactive marker was applied to the mesoderm of a mammalian embryo. which tissues or organs would have this marker in the adult?

Which of these cell parts contain instructions for the passage of traits from one generation to the next

Which of these is a part of the process of speciation? O A. Living in a stable environment O B. Interbreeding between species O C. Increased gene flow OD. Divergence in genetie traits

In an experiment, a group of students placed ten raisins in a container with 100 ml of water. They covered the container and let the raisins sit overnight. The students removed the raisins from the container and observed that they were larger.

Two organisms share the same niche what symbiotic relationship ia this

One cell has two copies of chromosomes while the other has none. What could have caused this

Suppose you want to set up an experiment to test the hypothesis that electromagnetic fields cause CCD, and you have 6 hives to work with. Which of these is the best experimental setup? A. 6 hives exposed to high levels of EMF B.

Which transports digested lipids and bile across digestive fluids to the surface of mucosal cells? a. LDL'sb. micellesc. HDL'sd. chylomicrons

Which biomes contain a limnetic zone surrounded by a littoral zone? A. rivers and streams B. estuaries C. coral reefs D. ponds and lakes E. oceans

QUICK! In a developing embryo, what process allows cells of the mesoderm to give rise to muscle, bone, and heart tissues? Select one: a. cell differentiation b. cell depolarization c. cellular respiration d. cellular replication