Osteoporosis is characterized by Group of answer choices keratinization and death of epithelial cells. defective collagen production. immature red blood cells that lack hemoglobin. loss of bone mass and structure.

In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r) eyes. In a cross between a white eyed female and a red eyed male, what is the percentage of male offsprings having white eyes?

1. Where is the CFTR protein found? in heart cells in cells lining the lungs in every cell in the body in muscle cells in skeletal cells

a student has been measuring the oxygen levels in a lake for one year. at the end of the year she graphs he oxygen levels by month. this is an example of which step of the scientific method?

An epidemiologist is investigating a new disease and observes what appear to be bacteria

The ph of solution A is 3; solution B is 12; and solution c is 7. Which is the acid?

Why is the equator warmer than the north and south pole

Recognize and use signal words, Assignment Signal words let you know what's coming next in a sentence. Signal words show relationships between ideas. Use the drop-down menus to identify the signal words in each sentences.

Which processes are caused by convection currents in the mantle? Check all that apply. 1. earthquakes 2. ridge push 3. tsunamis 4. slab pull 5. volcanic eruptions 6. subduction

Imagine that you are studying the food preferences of a lizard species across its range. you have hypothesized that because these populations are fairly separate from one another, the lizards have evolved different food preferences.

An animal cell (left) and a plant cell (right) are shown. Which organelle labeled x in the diagram is found in both plant and animal cells