The two lists below are notes two students wrote. Their task was to list differences between plant and animal cells. Study the two lists. Which student is correct?

Student 1

Only plant cells have a cell wall.

Cytoplasm is only found in animal cells.

Plant cells have larger vacuoles.

Only animal cells have a chloroplast.

Student 2

Only plant cells have chloroplasts.

Plant cells have a large central vacuole.

Only plant cells have a cell wall.

A: Student 2 only

B: neither Student 1 nor Student 2

C: both Student 1 and Student 2

D: Student 1 only

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?

One of the newest applications of cell technology is called cybrid embryos. this process involves replacing the nuclear material of an animal cell with human nuclear material. how might this process affect public policies about research by using stem cells? the same policies and concerns about the use of human embryonic stem cells would most likely apply. the embryos would most likely be treated like traditional animal embryos and regulated accordingly. the process of forming cybrid embryos would most likely be banned by government regulators. the embryos would be treated as regular cells because they are not fully human in origin.

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases