Which of the following must happen before the cell can go through mitosis? A. The spindle fibers must break down. B. The cell must copy its DNA. C. The sister chromatids must separate. D. The cytoplasm must divide.

Large ecological regions with characteristic types of natural vegetation are called

Which of the following best defines an autotroph? A. An organism that eats producers B. An organism that breaks down dead plants and animals C. An organism that makes its own food D. An animal that eats other animals

What is likely to happen if a new organism that feeds off mice is introduced? a. The mice population will increase in response to the arrival of the new organism. b. The mice population, grasshopper population, and plant population will all increase.

Arthropods like shrimp molt because A. their hard exoskeleton cannot grow larger. B. their body grows faster than their exoskeleton. C. their exoskeleton is damaged. D. their exoskeleton cracks and lets in water.

Why does synthetically produced RNase refold incorrectly if the reducing agent is removed before urea removal?

Which is a biological activity a person can do at the beach? Question 17 options: experiment with sand erosion patterns identify various minerals in the sand measure tidal differences during the day observe the feeding behaviors of gulls

What type of alternative fuel comes from soybeans?

Explain the difference between an iconic compound and a molecule

Skin cancer is to exposure to the UV radiation as a keratin is to tanning b acne is to excessive secretion of oil c waterproofing is to temperature regulation d melanin is to acne

There could be many possible interpretations of what surrounds you in the natural world. O True O False