The chemical information for making proteins is carried in the DNA, which is found on the chromosomes in the cell nucleus.
Answer:
Purpose- "the reason why something is done or used"
Research- An open access, peer reviewed Journal. Information about a topic that is gained by investigating prevous information gathered by someone else. systematic investigation. A systematic way of gathering data and harnessing curiosity.
Avoiding Bias- Avoiding Bias means to write info with curiosity and with research, not using personal opinion or preferance to write info.
Hypothesis- May be described as an educated guess based on research to describe and/or to explain the effect of a certain cause. Usually written in If....Then.... (A specific testable Prediction describing what you expect to happen in a certain circumstance)
Experiment-An emperical Procedure using scientific method to test and explain a certain circumstance.
Also, A trial or test, carried out under controlled conditions, to discover something unkown, to verify a hypothesis.
Independent Variable- The Variable that is changed during an experiment.
Dependent Variable- The Variable that you measure in response that is affected by the changes made.
Control- The Control variable is the Variable that remains Constant and does not change.
Analysis- The careful study of the data obtained from the experiment.
Conclusion-Short paragraph that discusses the overall results from the data obtained by the experiment and explains whether the hypothesis was right or wrong.
Answer:
C) They should send signaling molecules across a small extracellular space.
Explanation:
To send a message to nearby cells, signal molecules only need to cross a small amount of space. Bloodstream (choice A) is used for long-distance communication, choice D is too vague, and choice B is used only for cells that are directly touching each other.
Answer:
C. serous cells and mucous cells
Explanation:
Salivary glands consist of serious acini and/or mucous acini. The serous acini represent the serous fluid secreting part of the salivary glands and is composed of serous cells. The mucous acini are made of mucous secreting cells.
The parotid salivary glands consist of serous cells only while the sublingual glands and submandibular cells have both serous and mucous cells.
In flatworms, the PHARYNX is used to gather food.
The digestive system of the flatworm is made up of the mouth, the pharynx and gastrovascular cavity. The pharynx is a muscular tube through which the flat worm can suck food into its gastrovascular cavity. Food normally passes from the mouth through the pharynx and then into the intestine where the food get digested by the cells lining the intestine walls.