Lipids are mostly composed of __ a) Protein molecules b) Polar molecules c) Non-polar molecules d) Water molecules

On the head, the skin is __ to the skull. superficial superior distal

13.-Las enzimas digestivas son un ejemplo de: Inmunidad Inespecífica Respuesta inmune Humoral Inmunidad Especifica

Fill in the Blank Question The red $\square $ marrow and the $\square $ are both examples of primary lymphold organs.

3. What activity transfers chemical energy from algae to marine animals? sleeping reproducing feeding swimming

The streamlined shapes of dolphins and sharks evolved Independently. The body plan of these 2 animals are Homologous Vestigial Analogous A product of convergent evolution Both Cand D are correct

Your elbows and knees are examples of a hinge joint. True False

5. Once investigators find a suspect, they can match the suspect's DNA to the DNA that they have found at the scene. The DNA can show if a suspect was present at a crime scene. suspect DNA

If the grass contains 100,000 kcal of energy, how much energy will a fox obtain from eating a bird? $10,000kcal$ 1,000 kcal 100 kcal 10 kcal

47) The external urethral sphincter is supplied by the __ 0.5 Points Somatic NS Sympathetic NS Parasympathetic NS

Part 1 Bones go to: http://www.ducksters com/science/bones.php 1. What three things does the skeletal system provide or do for the human body? (summarize the answers) __ 2. What attaches bones to other bones? __ 3. What attaches you bones to your muscles? __ 4. __ percent of your bone is made up of hard minerals like calcium? 6. The softer substance at the center of your bones is called __ 7. Red bone marrow is important because it does what? 8. By the time someone is an adult half of their bone marrow is yellow which is made up of what substance? __ 9. Your shoulder and hip are examples of what kind of joint?