BIOLOGY HIGH SCHOOL

What type of mixture is blood? solvent, suspension, solution, or a buffer

Answers

Answer 1
Answer:

Answer:

suspension

Explanation:

colorless fluid holds blood cells in suspension.

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Which of these best demonstrates mutualism between certain types of bacteria and humans

Answers

Mutualisam between types of Bateria and Humans

Bacteria and the human both get benefit from each other and this relation is mutualism. Bacteria stay inside nose, mouth, intestines, and many more areas of the body surface. They help human by giving response to pathogenic bacteria for protection of immune system.

They metabolize nutrients, vitamin production and wastes process in human’s digestive system. On the other hand, human provides them place to live. These above best demonstrates mutualism between bateria and humans.    

I cannot find the propositions if it is a MCQ, so I will tell what a bacterial mutualism is:

Mutualism is an exchange between species (two or more) in which the mixed organisms profit from this exchange. Unlike commensalism, the associated species adapt, because the modification of one can affect the survival and reproduction of the affiliated species.

Many mutualistic bacteria live and develop in us, for example, the intestinal flora synthesizes vitamin K, a vitamin that is necessary for the absorption of our food. This same intestinal flora also hinders the proliferation of pathogenic bacteria as well as that of commensal bacteria potentially dangerous.

In an experiment, the factor of interest is called thea. Control group
b. Experimental group
c. Hypothesis
d. Variable

Answers

The correct answer is the (d.) variable. In an experiment, the factor of interest is called the variable. Variable is the one who is representing the materials or the things that being experimented. In this way, the scientists are able to determine or get track on what's happening on both sides.

Final answer:

The factor of interest in an experiment is called the Variable.

Explanation:

In an experiment, the factor of interest is called the Variable. The variable is the specific aspect or condition that is being tested or manipulated in an experiment to determine its effect on the outcome.

For example, if you are experimenting to test how different amounts of fertilizer affect plant growth, the variable would be the amount of fertilizer applied. In this case, the amount of fertilizer is the factor of interest that is being studied.

Therefore, the correct answer is d. Variable.

Learn more about Experimental Design here:

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Imagine you are listening to a speech by a member of the National Consumers’ League. Which issue do you think they are protesting?A. A factory does not clean its workspace every night.

B. A store is hiring a lot of immigrants to work on the weekends.

C. A restaurant is letting their waiters keep all of their own tips.

D. Two large, national companies are merging and laying off workers.

Answers

ANSWER: A. A factory does not clean its workspace every night.

EXPLANATION: The National Consumer's League is an American consumer organization founded in the year 1899. It advocates for consumers on marketplace and workplace issues. They voiced for safer and secure workspace, fair working conditions, protected workers from exploitation by employers, promoted food inspection and advocated for child labor restrictions, the limiting of work hours and establishing minimum wage laws for women. So, it can be guessed that they are protesting for factory's clean workplace.
They are protesting for that a factory does not clean its workspace every night. The answer to your question is A. I hope that this is the answer that you were looking for and it has helped you.

A population of rabbits lives in a forest. The habitat features many small spaces for hiding. Over many generations, the average size of the rabbits gets smaller and smaller. What type of selection is this?

Answers

Answer: Directional Selection

Explanation: Directional selection results in a covariance between the trait and fitness and can lead to changes in a trait in a population.
Natural Selection. The gene of small size has been favored and that is the gene that gets more dominant in the population over generations.

Scientists were conducting a multiyear study on the effectiveness of a new drug for long-term memory loss. Theygave some of the test subjects the new drug to find out if it improves their long-term memory
Which is a possible limitation of this study?
O Test subjects may want to participate in additional experiments.
O Test subjects may find that the drug is not effective.
O Test subjects may get bored and want to quit early.
O Test subjects may have full-time jobs.

Answers

Answer:A

Explanation: it A

Answer:

A

Explanation:

I did the test E

Which of the following occurs in the upper respiratory system? A)air enters the alveoli
B)air enters the bloodstream
C)air is filtered and moistened
D)air is delivered to muscles

Answers

The correct answer is Option C

The air enters the nasal cavity and it is filtered and moistened their. This is done by the mucous membrane that is present on the inner side of the nasal passage.

The air is filtered and the dust particles gets attached to the mucous and the filtered air is send inside for the exchange of gases.

c.............................
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