In which of the following aquatic ecosystems are both littoral and benthic zones likely?

Diffusion, osmosis, active transport. all of these are methods by which a cell a. maintains homeostasis. b. creates energy. c. removes waste. d. reproduces.

Which is the basic unit of heredity that carries the trait of albinism from parent to offspring? base pairs genes proteins codons

Propose an explanation for why operons evolved in prokaryotes

What is the common ancestor of mammals, birds and snakes

Not all lipoproteins suppress HMG-CoA activity when supplied in culture medium. For example, HDL was not effective, but LDL was effective, even when present at low nanomolar concentrations.

A green house may be used to control temperature and carbon dioxide. True False

A healthy weight for an individual should not be based exclusively on weight, but on: select one: a. amount of lean body tissue. b. energy intake versus energy expenditure. c. body size of family members. d.

Do plant cells have mitochondria? yes or no

Antarctica is covered in ice. which of the following would you expect to be true of Antarctica? A. The ice is immune to insolation B. The ice has no heat capacity C. The ice has a high albedo D. The ice reflects no radiation

Mateo eats his breakfast and his gi tract will now begin the process of digesting and absorbing the nutrients from this meal. what is the order in which each of the organs of the gi tract will work to achieve this process?