On a microscopic view of a leaf, Bryan saw some bean-shaped cells present in pairs. Which cells were observed by Bryan?

Palisade

Guard cells

Spongy mesophyll

Uterine muscle responsiveness to oxytocin a. is enhanced by an increased in estrogen/progesterone ratio b. is prevented by high prostaglandin levels during pregnancy c.

Which is a density-independent factor A) Shelter B) Hurricanes C) food sources D) space

Why are algae and ferns both green? They each contain chlorophyll that absorbs violet-blue light and reflects green light. They each contain chlorophyll that absorbs green light and reflects violet-blue light.

A channel protein specific for calcium ions was found to have a pore lined with six glutamate residues that participate in coordinating the calcium ion.

In a scale model of the Solar System, if the Sun is represented by a ball with a diameter of about 8 inches, about how large would the Earth be? A the size of a marble B the size of a popcorn seed C the size of an apple D the size of a grapefruit

Compare and contrast a plant cell with an animal cell. Make sure you give at least two comparisons and two differences.

Explain why a cell needs to break down atp

Was the cutlass a pony car or muscle car

What type of selection favors the average individuals in a population

Which of the following ideal criteria for elimination of a disease is addressed by the following statement: Hepatitis B may establish a chronic infection that can lead to transmission of the disease even in the absence of symptoms? A.