Under a microscope, you can see that a plant cell has only half the usual number of chromosomes. What stage of the plant's life-cycle are you witnessing?

Which of the following weather patterns would be characteristic of a La Niña event? a. high pressure over the western Pacific. b. high ocean surface temperatures. c. warm and dry weather in the southern U. S. d.

What term did mendel used to signify his true breeding first generation?

List 3 parts of the cell theory?

What types of living things use binary fission?

In the periodic table, atoms are arranged from left to right and from top to bottom in which order?

Describe a situation that could cause lactic acid to build up in human muscle cells?

Which of the following are materials or equipment used in this lab to extract DNA? Mark ALL responses that apply. a. centrifuge and sample tubes b. centrifuges and micro pipettes c. centrifuge, micro pipettes, warm water bath d.

If the extracellular fluid has an excess of sodium ions, a. sodium ions move into cells b. intracellular fluid moves to the outside of cells c. phosphate and calcium ions are eliminated in feces d. blood levels of arsenic and oxalate increase

Why did the population of deer increase during the wolves absence? a Humans planted more plants in the area b Their predators were gone c The deer switched from asexual to sexual reproduction d Rivers brought more fish to the area

In which phase of cell cycle does synthesis of DNA take place?