Question: The abundant protein in blood, which is arguably the most critical for oxygen homeostasis in the body, is
Answer Options: myoglobin actin fibrinogen hemoglobin myosin Correct Answer: hemoglobin
Question: Inhalation is caused when the diaphragm and intercostal muscles contract. This creates positive pressure. When these muscles relax exhalation occurs.
Correct Answer: contract negative relax
Question: Innate immune responses involve antibodies.
Answer Options: True False Correct Answer: False
Question: A preparation that “teaches” the immune system to recognize a disease-causing agent without actually causing disease is termed a(n)
Answer Options: antibiotic sulfa drug analgesic vaccination injection Correct Answer: vaccination
Question: Special cells produced by the immune system that are progeny of properly stimulated B cells and are antibody-producing factories are
Answer Options: cytotoxic T cells helper T cells plasma cells macrophages memory cells Correct Answer: plasma cells
Question: A fever has no defense function, but only acts as a sign that an infection is present in the body.
Answer Options: True False Correct Answer: False
Question: When activated, ________ triggers a chain reaction that punctures bacterial cell membranes.
Answer Options: histamine interleukin ADH complement proteins Correct Answer: complement proteins
Question: A close interaction between individuals of different species over an extended period of time in which both benefit is called ______.
Answer Options: competitive exclusion mutualism symbiosis commensalism Correct Answer: mutualism
Question: Your textbook discusses two growth patterns: exponential growth and logistic growth. Which of these describes a situation in which resources are limited?
Answer Options: logistic exponential both neither Correct Answer: logistic
Question: The first species to live on new land, such as that formed from volcanic lava, are called ______.
Answer Options: climax community keystone species pioneer species Correct Answer: pioneer species
Question: Choose the characteristics that represent a r-selected species.
Answer Options: stable environment unpredictable environment close to carrying capacity high numbers of small offspring Correct Answer: unpredictable environment high numbers of small offspring
Question: A biological ______ consists of the different species within an area, typically a three-dimensional space, and the interactions within and among these species.
Answer Options: community organism population ecosystem Correct Answer: community
Question: Bacteria reproduce by ______.
Answer Options: binary fission fusion budding fragmentation Correct Answer: binary fission
Question: Which stage in embryonic development is the embryo a hollow ball?
Answer Options: zygote morula blastula gastrula embryo fetus Correct Answer: blastula
Question: Which of these statements about menopause and post-menopause is FALSE?
Answer Options: Ovaries begin to lose their sensitivity to FSH and LH. Menstrual periods become less frequent and finally cease. There are still eggs and potential follicles on the ovaries. They are all false; none are true. None are false; they are all true. Correct Answer: There are still eggs and potential follicles on the ovaries.
Question: Which of these forms of reproduction requires an egg?
Answer Options: fission budding fragmentation parthenogenesis Correct Answer: parthenogenesis
Question: Why is the presence of human chorionic gonadotropin a reliable test for pregnancy?
Answer Options: It is produced by the blastocyst. It is produced by the corpus luteum. It is produced by the placenta. It is produced by oviducts when a zygote is present. Correct Answer: It is produced by the placenta.