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Science rated A
Which blood group is the universal donor? - correct answer ✅Type O A universal blood donor has type O, universal aceptor is type AB. Blood oxygen levels are most likely low when blood _________. - correct answer ✅fills the right atrium An intracellular chemical signal can be produced in the cell membrane. Once it is produced, where does it go? - correct answer ✅To another part of the same cell After food has been masticated in the oral cavity, where does it go next? - correct answer ✅pharynx The diffusion of nutrients through the walls of the digestive system is critical to homeostasis in the body. Where does the majority of this diffusion take place in the digestive system? - correct answer ✅small intestine As soon as an invader, known as a(n) _____, enters the body, the body begins to fight. - correct answer ✅pathogen Where is skeletal muscle found? - correct answer ✅attached to bones
Science rated A
If a person smells something sweet, what form of information is this initially perceived as in the nervous system? - correct answer ✅sensory While hiking, a person is startled after encountering a bear. Her palms get sweaty and her heart starts racing. Which part of her nervous system was directly stimulated? - correct answer ✅sympathetic Which of the following types of tissues include cells of the immune system and of the blood? - correct answer ✅connective tissue Which best describes homeostasis? - correct answer ✅A relatively constant environment within the body Fertilization (the fusing of one sperm and an ovum) results in a(n) _________. - correct answer ✅zygote Which of the following are included in the male reproductive system? - correct answer ✅the penis and epididymis What structure plays a role in air conduction? - correct answer ✅trachea What body system is the skeletal system most closely associated with when hematopoises happens? - correct answer ✅Cardiovascular system
Science rated A
When would a cell most likely contain the most nucleotides? - correct answer ✅G What is the correct order of the stages of the cell cycle? - correct answer ✅G1, S, G2, M A student notices a pattern of stripes on five tigers. Each of the five tigers has the same stripe pattern. Using his inductive reasoning, what does he logically assume based on this information? - correct answer ✅Each offspring will have the same stripe pattern A researcher notices a positive correlation between the height of a plant and nutrient concentration over time. Based on this observation, what conclusion does he reach? - correct answer ✅When the amount of nutrients available to the plant increases, its height also increases. Which statement best represents Mendel's experiments with garden peas? - correct answer ✅Mendel collaborated with others interested in genetics to develop heredity guidelines we still use today. Which of the following is a component of a chromosome? - correct answer ✅centromere What solution has a pH of 7? - correct answer ✅pure water
Science rated A
Which is classified as a type of acid-based reaction that produces a salt? - correct answer ✅Neutralization Which of the following determines the strength of an acidic solution? - correct answer ✅Measured pH value less than 7 What type of bond forms between nitrogen and oxygen, and why?
- correct answer ✅covalent, because electrons are shared Which of the following atoms is a cation? - correct answer ✅ 82 protons, 125 neutrons, 78 electrons Because it has more protons than electrons, this atom has a positive charge and can be classified as a cation. A spoonful of sugar is added to a hot cup of tea. All the sugar dissolves. How can the resulting solution be described? - correct answer ✅Unsaturated and homogeneous In the following single-replacement reaction, __________ replaces __________. Cl2+2NaI -> 2NaCl+I2 - correct answer ✅Chlorine, Iodine _________ is dependent not only on the temperature, but also on the amount of substance available. - correct answer ✅evaporation
Science rated A
In which state of matter do the particles of iron have the lowest amount of cohesion? - correct answer ✅Gaseous iron particles have the lowest amount of cohesion A person is diagnosed as having acidosis, a condition in which the blood pH is below 7.45. What does the doctor most likely conclude? - correct answer ✅Too much carbon dioxide is found in the blood An atom has 28 protons, 32 neutrons, and 28 electrons. What is the name of this isotope? - correct answer ✅Nickel- Protons+neurons The physical appearance or _______of an organism is determined by a set of alleles. - correct answer ✅Phenotype Arrange the path of food through the digestive system. - correct answer ✅Oral Cavity Pharynx Esophagus Pyloric Sphincter Small Intestine Large Intestine Colon
