BIOLOGY MIDDLE SCHOOL

3. Roads in urban areas are generally

Answers

Answer 1
Answer:

Answer:

parallel and intersect at right angles

Explanation:

The roads in the urban areas tend to be very well organized and constructed. They tend to be parallel to each other, and also to intersect at right angels. The reason for this kind of building of the roads in the urban areas is to make the movement in the urban areas much easier and more efficient, mostly putting the accent on the traffic. It is a fact that the traffic is a big problem in the urban areas, so by constructing the roads in a well organized manner, the traffic jam eases up and the citizens can move more easily and quickly.

Answer 2
Answer:

Answer: C

Explanation: I am doing the class as well


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COLLEGE

Synaptic vesicles at the neuromuscular junction contain

Answers

Explanation:

It contains multiple mitochondria and synaptic vesicles where the transmitter acetylcholine is stored

Answer:contains multiple mitochondria

Explanation:

HIGH SCHOOL

Sea otters are part of a giant kelp ecosystem. They feed on sea urchins that feed on kelp. How does hunting sea otters affect the population of sea urchins and kelp in the ecosystem? A. The sea urchin population decreases, and the kelp population increases B. The sea urchin population decreases, and the kelp population decreases C. The sea urchin population increases, and the kelp population decreases D. The sea urchin population increases, and the kelp population increases

Answers

The answer is C
if you kill all the sea otters (which is wrong) then there is nothing to kill the sea urchins which then the sea urchin population will increase. Because sea urchins feed on kelp and there are so many of sea urchins, it requires more kelp to be eaten. Last, the kelp population is low because all the sea urchins ate most of the kelp

Answer:

sea otter and horn shark

Explanation:

HIGH SCHOOL

Describe how cultures have been involved with science

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Culture help shaped the medical and lifestyle of a people living in the community. It also helped create machinery to lessen the work load of people. Science helps create changes and improves the life of the people living in the community. Science was able to help lower the death rate in nomadic times, they created medicine, introduce agriculture and more.

Answer:

Explanation:

The scientific theories have come from the observation of different cultures and traditions. Culture is the ideas, knowledge, objects, behaviors of the people. The cross-culture is observation, interaction, and learnings. This is similar to the evolutions. In ancient techniques like medicines, living style and the modes of communication have been changing due to science and cross cultures. The scientist and scientific theories shaped by the cultures. Science is the observation of nature and activities of the organisms, people and gives new ideas. The things which make the life of people easy will be accepted and the rest will perish. This is just like the evolution where everything is a continuous change. The medicines, education, living habits all belong to a culture which is also adopted the scientific methods. The culture shapes the scientist and scientific theories but in different ways.

HIGH SCHOOL

Nerve growth factor (nGF) is a water-soluble signaling molecule. Would you expect the receptor for nGF to be intracellular or in the plasma membrane? Why?

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Answer:

The nGF or the nerve growth factor refers to a neurotrophic factor and neuropeptide that mainly takes part in the regulation of growth, proliferation, maintenance, and survival of some of the target neurons.  

As nGF is a signaling molecule, which is water-soluble, or it can be said it is hydrophilic in nature, therefore, it cannot pass via the lipid membrane and reach the intracellular receptors, as done by the steroid hormones. Thus, one cannot anticipate the receptor for the NGF to be present within the cell, it will be present in the plasma membrane.  

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