Which phrase best describes osmosis? A. the process by which the cytoplasm physically divides B. the process of DNA synthesis C. the process where distribution of molecules is balanced out by their movement D. the process where a selectively permeable membrane allows the movement of water through it
The main differences in genetic make-up between archaea and eubacteria are _____. gene sequences of rRNA cell membrane properties enzymes and metabolic pathways all of the above
According to the theory of evolution, birds feathers evolved from: a) reptiles scales b) fish fins c) gill slits d) gill arches
A psychologist would most likely use biofeedback to provide clients with information about their body weight. blood type. muscle tension. genetic makeup.
Earth’s systems interact through _______. a. humans b. glacial episodes c. feedback mechanisms d. none of the above Please select the best answer from the choices provided A B C D
As an overall result of the citric acid cycle, NADH atoms are consumed. are produced. act as catalysts. act as oxidizing agents.
Which human action has not lead to significant changes in Earth’s biomes? a. agriculture b. burial practices c. pollution d. large-scale fishing
Which statement describes a problem with the peer review process in scientific research? It can sometimes reject important new ideas or novel techniques. It forces new scientists to meet the same standards that established scientists meet. It always requires scientists to have to reanalyze their data. It often makes it more difficult to justify a conclusion.
Which tissue is responsible for voluntary and involuntary movements? A. Muscle tissue B. Epithelial tissue C. Connective tissue D. Nervous tissue
Review the image of the earthworm. which of the following best describes the characteristics of the earthworm? select all that apply
Riparian foliage _______. a. provides shade and shelter b. increases photosynthesis of aquatic plants c. limits the organic matter present in rivers and streams d. all of the above
Explain how human embryonic stem cells, adult stem cells, and skin cells from the same person would be similar and differentiate. Help??
Which of the following structures or systems is correctly paired with its function? a. central nervous system - processes information and controls responses b. frontal lobe - portion of the brain that controls body movement c. neurons - brain cells that control thoughts, calculations, and memory d. peripheral nervous system - releases hormones and controls emotions
What could be the possible result of founder effect on genetic variation? Decrease in genetic variation Increase in genetic variation No change in genetic variation
What male reproductive structure releases sperm into the vas deferens? Urethra Epididymis Testes Penis
Adaptations result from interactions between organisms and their _____. behavior environment offspring gene pool
Which of the following is caused by the modification of density–independent factors? A. Parasitic wasps invade cocoons, killing many caterpillars. B. Periodic drought causes an abrupt decrease in vegetation. C. Organisms compete for food, water, and other resources.
Suppose that the pedigree shown in the transparency is for a trait caused by recessive allele.is it possible to infer from the pedigree whether or not I-1 and I-2 are carriers of the allele
Which of the following best describes an example of a nonspecific internal response to a harmful bacteria
NEED THEM ASAP 1. Which of the following has the longest life? A. sun B. dwarf star C. giant star D. supernova D 2.Which type of fusion occurs in the red giant phase? A. hydrogen to helium B. helium to hydrogen C. hydrogen to carbon D. helium to carbon B 3.Which type of telescope would you need to most easily see a potential neutron star? A. visible light B. X-ray C. infrared D. ultraviol
Which of the following compounds would be expected to have the strongest ionic bonds? 1)the compound that has the largest ions with the greatest charge 2)the compound that has the largest ions with the least charge 3)the compound that has the smallest ions with the greatest charge 4)the compound that has the smallest ions with the least charge
Which of the following correctly describes the appearance of muscle tissue found in the heart? Single-nucleus, non-striated, short cells Single-nucleus, striated, branching cells Multinucleated, non-striated, branching cells Multinucleated, striated, long threadlike cells