Which of these organisms are vertebrates in Kingdom Animalia? Choose all answers that are correct? A. worms B. frogs C. clams D. fish
What does the lac operon in bacteria code for? A. lactose B. enzymes the break down lactose C. enzymes that synthesize lactose
Which is the best definition of a prokaryotic cell? It has a cell wall but lacks a well–defined nucleus and organelles, and its cytoplasm doesn't have much structure. It contains a membrane–bound nucleus and organelles, and its organelles have specialized duties. It contains a membrane–bound nucleus, a large central vacuole, a cell wall, a cell membrane, and chloroplasts.
The cardiovascular system, which transports blood through the body, is a one-way system. a. True b. False
A substance that enters Earth's cycles and does harm to living things is A. hydrogen. B. a pollutant. C. freshwater. D. oxygen.
A male bird shows bright feathers to attract a mate. What type of behavior is this? territorial behavior simulation courtship behavior learned behavior
Production of seeds, fruit, and flowers are characteristics of which group? A)mosses B)ferns C)angiosperms D)gymnosperms
What is another term for the responding variable? primary variable dependent variable independent variable uncontrolled variable
Compared with the walls of arteries, the walls of capillaries. A. are thicker B. are thinner C. lack valves D. have more resistance
11. In single-gene traits, natural selection can lead to which of the following? A. Founder effect B. Disruptive selection C. Allele frequency change D. Directional selection
Which response occurs because of the auxin a. A flower blooms b. A fruit ripens c. A plant leans toward a light source d. A seed germinates
Which pair of terms best describes a wooden table? A. biotic and nonliving B. biotic and living C. abiotic and nonliving D. abiotic and living
Which of the following BEST describes STI symptoms? A. Symptoms for STIs are similar in nature and severity. B. Symptoms may not be present even though there is an infection. C. Visible symptoms are limited to the genital area. D. Symptoms can be treated with over-the-counter medicationWhich of the following BEST describes STI symptoms? A. Symptoms for STIs are similar in nature and severity. B. Symptoms may not be present even though there is an infection. C. Visible symptoms are limited to the genital area. D. Symptoms can be treated with over-the-counter medication
Which of the following gives sexual reproduction an advantage over asexual reproduction? A. Sexual reproduction often requires two parents to be present. B. Sexual reproduction increases genetic diversity. C. Sexual reproduction produces genetically identical offspring. D. Sexual reproduction happens more quickly than asexual reproduction
Which structure is labeled X in the diagram below? A.nucleic acid B.lipid envelope C.protein tail D.capsid proteinDownload jpg
Which of the following is the correct explanation for linked genes? genes located on the same chromosome and inherited together genes located on different chromosomes but inherited together genes located on mutated chromosomes that are inherited together NextReset
Animals are often grouped as a. vertebrates or invertebrates. b. heterotrophs or autotrophs. c. walkers or crawlers. d. swimmers or runners.
Which source of energy is ideal for prolonged, low-intensity activity? lipids protein glycogen lactic acid
Evidence for coordinated stasis is found in ____. A- the fossil record B- natural selection C- atmospheric records D- the gene pools of extinct species
What is the characteristic of the gastrula stage of embryo development?Select one of the options below as your answer: A. Formation of the neural tube and nervous system B. Formation of the three germinal layers and the primitive gut C. Formation of the amniotic cavity and archenteron
When a neuron carries the electrical potential of _____ millivolts, it is in the state called _____?
Which are considered types of credit available to borrowers? Check all that apply. A. personal loans B. bonds C. credit cards D. mortgages E. cash F. auto loans G. gift cards
__________ allow people to smell different aromas and taste sweet, salty, and sour foods. a.Pain receptors b.Chemoreceptors c.Photoreceptors d.Thermoreceptors
Which class of hydrocarbons contains at least one carbon-carbon triple bond? A. Alkanes B. Alkenes C. Alkynes