When a sea urchin egg is removed from the

ocean and placed in freshwater, the egg

swells and bursts. Which of these causes

water to enter the egg?

A) Coagulation

B) Sodium pump

C) Active transport

D) Osmosis

An animal in which the space between the body wall and gut is completely filled with tissues and organs is called a (n) A. vertebrate. B. pseudocoelomate. C. coelomate. D. acoelomate.

Suppose population a is small and the species has a short generation time, while population b is large and has a long generation time. which will be faster to adapt? which will be more resilient in the face of environmental change?

How are animals and plants different? How are they the same? Be specific.

Which of these are the main working cells of the specific immune response? A) histamines and interferons, B) antigens and antibodies, C) B cells and T cells, D) self and nonself cells

When a woman is in her period and a man does not bring out sperms and they have sex, will the woman get pregnant

How are phenotypes and genotypes alike.

Greg checks his watch one day at noon when the Sun is directly overhead. He decides to check his watch when the Sun is directly overhead again tomorrow.

What is the primary function of the juxtaglomerular complex?

Which is an example of how stem cells are currently being used

Describe the type of evidence that scientists used for classifying organisms before they were able to sequence dna