Q: What promotes cell division and are necessary for growing plants in tissue culture? Read this paragraph and choose the correct option from the provided answers: Cytokinins promote cell division and are necessary for growing plants in tissue culture. A small piece of a plant is placed in sterile conditions to regenerate a new plant. Choices: - polyamines - auxins - mitochondria - cytokinins A:
cytokinins

(Question)
Q: Body waves travel through the earth and arrive at seismograms before what? Read this paragraph and choose the correct option from the provided answers: Body waves travel through the Earth and arrive at seismograms before surface waves. Choices: - sound waves - velocity waves - function waves - surface waves A:
(Answer)
surface waves

Ques: Q: Organic chemistry is the study of the chemistry of what? Read this paragraph and choose the correct option from the provided answers: Organic chemistry is the study of the chemistry of carbon compounds. Choices: - hydrogen - metals - oxidation - carbon compounds A:
Ans: carbon compounds

(Q).
Q: Examples of what process are evident in many biological systems because cells are surrounded by semipermeable membranes? Read this paragraph and choose the correct option from the provided answers: Examples of osmosis are evident in many biological systems because cells are surrounded by semipermeable membranes. Carrots and celery that have become limp because they have lost water can be made crisp again by placing them in water. Water moves into the carrot or celery cells by osmosis. A cucumber placed in a concentrated salt solution loses water by osmosis and absorbs some salt to become a pickle. Osmosis can also affect animal cells. Solute concentrations are particularly important when solutions are injected into the body. Solutes in body cell fluids and blood serum give these solutions an osmotic pressure of approximately 7.7 atm. Solutions injected into the body must have the same osmotic pressure as blood serum; that is, they should be isotonic with blood serum. If a less concentrated solution, a hypotonic solution, is injected in sufficient quantity to dilute the blood serum, water from the diluted serum passes into the blood cells by osmosis, causing the cells to expand and rupture. This process is called hemolysis. When a more concentrated solution, a hypertonic solution, is injected, the cells lose water to the more concentrated solution, shrivel, and possibly die in a process called crenation. These effects are illustrated in Figure 11.28. Choices: - reproduction - photosynthesis - apoptosis - osmosis A:
(A).
osmosis

Ques:Q: What theory brings together continental drift and seafloor spreading? Read this paragraph and choose the correct option from the provided answers: The theory of plate tectonics brings together continental drift and seafloor spreading. Choices: - theory of order tectonics - theory of water tectonics - theory of front tectonics - theory of plate tectonics A:

Ans:theory of plate tectonics

Ques: Q: Descending fibers from the cerebrum have branches that connect to neurons in the pons. those neurons project into the cerebellum, providing a copy of motor commands sent to this? Read this paragraph and choose the correct option from the provided answers: Descending fibers from the cerebrum have branches that connect to neurons in the pons. Those neurons project into the cerebellum, providing a copy of motor commands sent to the spinal cord. Sensory information from the periphery, which enters through spinal or cranial nerves, is copied to a nucleus in the medulla known as the inferior olive. Fibers from this nucleus enter the cerebellum and are compared with the descending commands from the cerebrum. If the primary motor cortex of the frontal lobe sends a command down to the spinal cord to initiate walking, a copy of that instruction is sent to the cerebellum. Sensory feedback from the muscles and joints, proprioceptive information about the movements of walking, and sensations of balance are sent to the cerebellum through the inferior olive and the cerebellum compares them. If walking is not coordinated, perhaps because the ground is uneven or a strong wind is blowing, then the cerebellum sends out a. Choices: - neurotransmitters - umbilical cord - cerebral cortex - spinal cord A:
Ans:
spinal cord