Answer the following question given this paragraph: Many plants also produce hormones and toxins to fight pathogens. For example, willow trees, like the one in Figure below , produce salicylic acid to kill bacteria. The same compound is used in many acne products for the same reason. Q: What do willow trees produce to kill bacteria? Choices: - facultative acid - Posion - bacterial acid - salicylic acid A:
salicylic acid
Answer the following question given this paragraph: down into three major groups: those caused by blood loss, those caused by faulty or decreased RBC production, and those caused by excessive destruction of RBCs. Clinicians often use two groupings in diagnosis: The kinetic approach focuses on evaluating the production, destruction, and removal of RBCs, whereas the morphological approach examines the RBCs themselves, paying particular emphasis to their size. A common test is the mean corpuscle volume (MCV), which measures size. Normal-sized cells are referred to as normocytic, smaller-than-normal cells are referred to as microcytic, and larger-than-normal cells are referred to as macrocytic. Reticulocyte counts are also important and may reveal inadequate production of RBCs. The effects of the various anemias are widespread, because reduced numbers of RBCs or hemoglobin will result in lower levels of oxygen being delivered to body tissues. Since oxygen is required for tissue functioning, anemia produces fatigue, lethargy, and an increased risk for infection. An oxygen deficit in the brain impairs the ability to think clearly, and may prompt headaches and irritability. Lack of oxygen leaves the patient short of breath, even as the heart and lungs work harder in response to the deficit. Blood loss anemias are fairly straightforward. In addition to bleeding from wounds or other lesions, these forms of anemia may be due to ulcers, hemorrhoids, inflammation of the stomach (gastritis), and some cancers of the gastrointestinal tract. The excessive use of aspirin or other nonsteroidal anti-inflammatory drugs such as ibuprofen can trigger ulceration and gastritis. Excessive menstruation and loss of blood during childbirth are also potential causes. Anemias caused by faulty or decreased RBC production include sickle cell anemia, iron deficiency anemia, vitamin deficiency anemia, and diseases of the bone marrow and stem cells. A characteristic change in the shape of erythrocytes is seen in sickle cell disease (also referred to as sickle cell anemia). A genetic disorder,... Q: Sickle cell disease is caused by production of an abnormal type of what? Choices: - fat globule - thrombocyte - leukocyte - hemoglobin A:
hemoglobin
Q: Answer the following question given this paragraph: Vertebrates evolved from primitive chordates. This occurred about 550 million years ago. The earliest vertebrates may have been jawless fish, like the hagfish in Figure below . Vertebrates evolved a backbone to replace the notochord after the embryo stage. They also evolved a cranium , or bony skull, to enclose and protect the brain. Q: Vertebrates evolved from primitive forms of which creature? Choices: - arthropods - humanoids - cephalopods - chordates A:
A: chordates
Question: Answer the following question given this paragraph: Gas pressure is the result of collisions between gas particles and an object. Q: What two things collide to cause gas pressure? Choices: - gas particles and an electron - light particles and an object - gas particles and a wave - gas particles and an object A:
Answer: gas particles and an object
*Question*
Answer the following question given this paragraph: Mike Johnston. Whale sharks are the largest cartilaginous fish . CC BY 2.0. Q: What is the largest cartilaginous fish? Choices: - dolphin - blue whale - sturgeon - whale shark A:
**Answer**
whale shark
Q: Answer the following question given this paragraph: It could easily be said that a cell is the fundamental unit of life, the smallest unit capable of life or the structural and functional unit necessary for life. But whatever it is, a cell is necessary for life. The Cell Biology chapter will discuss some of the fundamental properties of the cell, with lessons that include the cell structure, transport in and out of the cell, energy metabolism, and cell division and reproduction. Q: What can be thought of as the fundamental unit of life? Choices: - ion - atom - electron - cell A:
A: cell