What part of the cell controls what enters and exits the cell

there are 10,000 joules of energy stored in the producers of a specific ecosystems approximately how many joules of energy would be stored at the secondary consumers trophic level

Which of the following is true about natural selection? A. Natural selection causes changes in populations because of the differential reproductive success of genetically varied individuals. B.

What happens if you place human red blood cells in a concentrated salt solution a. They shrink as water moves from inside to outside the cells as a result of osmosis b.

Two parents, one GG and one Gg, have offspring. What will the genetic makeup of those offspring be?

Which of the following is an example of a producer? Tree Hawk Rabbit Mushroom

Which occurs during transcription? A. DNA is copied to create a second DNA strand. B. mRNA codons and tRNA anticodons assemble amino acids. C. DNA is unzipped with the aid of DNA polymerase. D. mRNA is synthesized from a strand of DNA.

In a beach ecosystem, what can limit growth of organisms? A. ocean and rocks B. oxygen C. abundant food source D. moderate temperatures

What process do the arrows for oxygen going in and water coming out represent in the Figure 9-2 diagram of the mitochondria?

Sponges are made up off

The maxinmum numbers of individuals of a particular species that a partiticlar environment can support is its