Straighterline

phylogeny - correct answer The study of evolutionary relationships among organisms is called ______. Last Universal Common Ancestor - correct answer The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______. always harmful to their host - correct answer Organisms called parasites are ______. Thermal hot springs warmed by heat from earth's interior - correct answer Which of the following does not indicate microbe involvement in energy and nutrient flow...

Studies by Emil von Behring and Shibasaburo Kitasato demonstrated that inactivated toxins can induce the synthesis of antitoxins in the blood of rabbits. These antitoxins (antibodies) are the basis of... a. humoral immunity b. cell-mediated immunity c. antibiotic immunity d. phagocyte-mediated immunity - correct answer a. humoral immunity Who of the following first discovered that some blood leukocytes could engulf disease-causing bacteria? a. von Behring b. Meister c. Metchnikoff...

Which class of eukaryotic microorganisms can be subdivided into groups such as Mastigophora, Sarcodina, Ciliophora, and Apicomplexa? A. Helminths B. Algae C. Protozoa D. Fungi - correct answer Protozoa Genetic material can be excised from one chromosome and directly integrated into another via A. conjugation. B. transformation. C. transduction. D. transposons. - correct answer transposons. Which immune cell secretes numerous cytokines that help to coordinate the ...

The study of tissues is - Correct Ans-histology Microscopic examination of a frozen tissue specimen is an application of which of the following disciplines? - Correct Ans-histology The study of the external form of the body and its relationship to deeper structures is - Correct Ans-surface anatomy The study of the structural features and functions of the cell is - Correct Ans-cytology Which subdivision of anatomy involves the study of organs that function together? - Correct Ans-syst...

Which of the following statements is true? a. The primary role of carbohydrates is to serve as an energy source. b. Carbohydrates include sugars, starches, and amino acids. c. Maltose is a complex carbohydrate. d. Sucrose is the primary source of energy for most cells. e. Most carbohydrates come from animal products. - Answer a. The primary role of carbohydrates is to serve as an energy source. Excess triglycerides are stored in adipose tissue. Adipose tissue functions a. to assi...

Macroscopic - Answer Gross Anatomy Gross Anatomy - Answer is the study of structure large enough to be seen with the naked eye. EX. heart, lungs and kidneys. Regional Anatomy - Answer the study of anatomy based on regions or divisions of the body and emphasizing the relations between various structures (muscles and nerves and arteries etc.) in that region Microscopic Anatomy - Answer Deals with structures too small to be seen with the naked eye. Cytology - Answer The s...

An isotonic contraction is described as Select one: a. action potential frequency is high enough that no relaxation of muscle fibers occurs. b. a muscle produces constant tension during contraction. c. a muscle produces an increasing tension during contraction. d. a muscle produces increasing tension as it shortens. e. a muscle produces tension, but the length of the muscle is increasing - Answer b. a muscle produces constant tension during contraction. After contraction has occurr...

What is the smallest level of organization in the body that contains the body's genetic information? Select one: a. chemical b. cellular c. tissue d. organism - Answer B. Cellular The cellular level includes the nucleus, an organelle that contains the body's genetic information. Which is an example of a normally occurring positive-feedback mechanism? Select one: a. elevated blood pressure during exercise b. increase in heart rate after blood loss c. decrease in blood pre...

The lymphatic system is involved in - Answer lipid absorption from the digestive tract. The lymphatic system plays a role in maintaining fluid balance within the body by - Answer returning interstitial fluid to the plasma Lacteals are - Answer lymphatic vessels in the lining of the small intestine. Which of the following is NOT a function of the lymphatic system? A. Defending from infection caused by microorganisms and other foreign substances. B. Aiding in erythropoiesis of...

When erythrocytes are destroyed, which of the following events occurs? - Answer The globin portion of the molecule is broken down into amino acids. Type AB blood - Answer has both A and B antigens on the red cells In the platelet release reaction, - Answer ADP and thromboxanes stimulate other platelets to become activated. The hematocrit is - Answer d. the percentage of RBCs in a given volume of blood. What vitamin is necessary to produce many clotting factors in the live...