This is a slide of human cheek cells. After scraping the inside of their mouths, students in Ms. Gordon's class smeared the swab on a slide and stained them blue. These cells are parts of a large, complex organism, a human. But these cells. Like the other cells in the human body all have an important organelle, seen here. It stains dark blue and is the control center of the cell. What is this organelle? Question 13 options: DNA cytoplasm membrane nucleus.

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis