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zmey [24]
3 years ago
14

Help science!

Biology
1 answer:
dalvyx [7]3 years ago
3 0
The answer is D) an increased proportion of wealthy citizens
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Define genus and species. how are they related to the binomial nomenclature of an organism?
IrinaVladis [17]

A genus is typically the name for a small group of closely related organisms. The second part of a scientific name, axyridis in this example, is the specific epithet. It is used to identify a particular species as separate from others belonging to the same genus.

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3 years ago
A very good friend just returned from the doctor's office and was told that she has a tumor. She's terrified and thinks this mea
Ivenika [448]

Answer:

Explanation:

A cancer is a disease condition in which all the cells in the body continuous divide without control.

A tumor is when the uncontrolled cells growth occur in solid tissues like organs, tissues and bones in the body.

A tumor is formed when lump is developed in your body.

A tumor can become cancerous but not all.

Only malignant tumor are cancerous i.e they contain cancerous cells and can spread to all part of the body.

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2 years ago
A desalination plant is set up in a bay to provide fresh, drinkable water by removing salt from ocean water and returning the re
pickupchik [31]
Salinity refers to an increase in the dissolved salt content of a body of water. Salinity has great impacts on the type of organisms that live inside the water. In the question given above, the salinity occurs as a result of non natural influence; since most of the organisms living inside the water before probably have specific optimal salinity range, if the salinity exceed the range they can cope with, they will probably migrate away from the water, those that refuse to migrate will probably die out and new species which can cope with the salinity level will emerge.
5 0
3 years ago
McIntyre CC, Richardson AG, Grill WM (2002) Modeling the excitability of mammalian nerve fibers: influence of afterpotentials on
IceJOKER [234]

Interneuron, skeletal muscle, somatic receptor, afferent nerve fiber, and efferent nerve fiber.

The action potential from skin receptors is sent by nerves in this type of reflex system.

Sensory neurons advance the motion to the Central Nervous System (CNS).

The efferent neuron or motor neuron causes changes at the effector, which are the skeletal muscles, for adequate integration and responsiveness.

Reflex action refers to the full series of actions. The reflex arc is the name of the route.

Somatic receptor followed by afferent nerve fiber, interneurons, efferent nerve fiber, and skeletal muscle constitutes the proper order.

To learn more about somatic reflex follow the link:

brainly.com/question/17097139

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4 0
1 year ago
Which of the following best describes an aspect of a membrane's molecular structure that causes it to be selectively permeable?
atroni [7]

Answer:

<u>d. Transport proteins within the membrane serve as a tunnel for molecules to enter the cell. </u>

<u />

Explanation:

Solutes are typically moved across the cell through either passive or active transport. The cells, surrounded by a bilipid layer or plasma membrane is amphiphlic- its polar, hydrophilic lipid heads face outwards, while their non-polar hydrophobic lipid tails face inwards towards each other.

While lipid-soluble molecules move across the layer easily, it is also difficult for charged and also large molecules to move across its surface, into the cell. Transmembrane channels, <u>embedded within the membrane</u>, help to maintain selective permeability as transport proteins, pores and gated channels. Simple diffusion happens as a method of passive transport in cells through plasma membranes.

The solutes travel through the plasma membrane in the process of diffusion from regions of high concentration to regions of low concentration; this occurs without the use of energy. <u>Molecules moving against their concentration require active transport mechanism to cross the membrane</u>.

3 0
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