Which structure surrounds the cell membrane of some cells, giving the cell a rigid shape

A black bear eats fish, berries, and deer. It is not eaten by anything else until it dies. What trophic level does it belong to? * Producer primary consumer secondary consumer tertiary consumer

How many food calories can a human burn up in an hour by exercising at this rate? (remember that only 20.0 % of the food energy used goes into mechanical energy.) ?

Before a male client signs an operative consent for an abdominoperineal resection, the nurse verifies that the client understands that surgery likely will result in which outcome?

Your knee is called a hinge joint ithe is called this because it bends like the hinge on a door what are some other examples of joints in your body that work like a hinge

These are chemical substances with a measurable pH above that of 7.0 on a 0-14 scale.

Earth's view from space is like a sparkling blue oasis in a black sea of stars. True Or False

For women, the hormones estrogen and fsh are both necessary for the:

The neuroendocrine system consists of which of the following? A. Nerve impulses and hormones B. Circulation and neurons C. Neurons and nerve impulses D. Hormones and circulation

The mitochondrial DNA sequences of a large extended family were analyzed and compared to a single male in the family. Which of the relatives' mitochondrial DNA should be a match to this person?

How do you explain that the variability in a domesticated species is greater than in the same species, or a similar one, in the wild? For example: dogs vs. wolves; chickens vs. red jungle fowl.