BIOLOGY HIGH SCHOOL

Provide two examples of mechatronic systems that you encounter in your everyday environment or that interest you. for each system, identify any/all:a.sensors
b.actuation
c.electronics/computation elements

Answers

Answer 1

Answer:

Answer:

1. Air conditioner

2. Washing/drying machine

Explanation:

1. Mechatronic System: The air conditioner:

Sensors: Thermometers

Actuation: Motors used to move the vanes that guide the air out of the vent.

Electronics/computation elements: Microprocessor used to process information from the sensors

2. Mechatronic System: Washing/ drying machine

Sensors: Thermometers

Actuation: Motors used to turn the washing drum

Electronics/computation elements: Microprocessor used to process the wash time and control the drum

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Cells require glucose as a source of energy to carry out life processes. Large molecules like glucose cross the cell's plasma membrane byA)
being pumped through ion channels.
B)
active transport through protein channels.
C)
passive diffusion through the lipid bilayer.
D)
facilitated diffusion through protein channels.

Answers

Answer – D. Facilitated diffusion through protein channels
Glucose molecules are too big to pass through the plasma membrane by direct diffusion, so Glucose gains entrance into a cell by facilitated diffusion through protein channels in the plasma membrane. Since glucose moves with the concentration gradient, the built-in protein channels are only there to facilitate the movement of glucose into the cell and no energy is expended.

proteins are used to help move molecules more quickly. It is a process called facilitated diffusion. It could be as simple as bringing in a glucose molecule. Since the cell membrane will not allow glucose to cross by diffusion, helpers are needed. so the the correct chioice is D

A cell can only grow so large in size, becauseA. its ability to exchange materials would happen more quickly as the cell grows.
B. its surface-to-volume ratio decreases as the cell becomes larger.
C. its surface-to-volume ratio decreases as the cell becomes smaller.
D. its ability to exchange materials is affected by a growing surface-to-volume ratio.

Answers

A cell can only grow so large in size because itsability to exchange materials is affected by a growing surface-to-volume ratio.Nature designed cells to be small in size because of the network of membranespassing through it. If cells grow any bigger, membranes in it will not be ableto pass through its different parts and perform their purpose.

A cell is a network composed of many organelles (e.g. mitochondria, nucleus),that communicate and work together to provide bodily functions. The cell issmall so that communication between organelles will be faster and much easier. Whencells are small they can be easily repaired when damaged and replicated whenneeded.

Final answer:

A cell can only grow to a certain size because as it grows, its surface-to-volume ratio decreases, reducing the efficiency of material exchange between the cell and its environment. The larger the cell, the more challenging it is to exchange materials, hence a size limitation.

Explanation:

The reason a cell can only grow so large in size is due to the decrease in its surface-to-volume ratio as the cell becomes larger. This concept, often discussed in biology, refers to the relationship between the surface area of a cell (which determines the amount of substances that can be exchanged with the environment) and its volume (which determines the amount of substances required by the cell).

As the cell grows larger, its volume increases more rapidly than its surface area, reducing the ability of the cell to exchange materials efficiently. Thus, the correct answer is Option B: its surface-to-volume ratio decreases as the cell becomes larger.

Learn more about Cell Size here:

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Cancer Treatment Success What is the success rate of a new cancer treatment for patients with a particular genetic mutation present? A) 75% B) 40% C) 70% D) The success rate is not mentioned in the question.

Answers

Answer:

is that was Cancer of the following

Facilitated diffusion requires what

Answers

The solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. This process is called passive transport or facilitated diffusion, and does not require energy.

Hope this helps !!!^_~!!!

Ecosystems with greater biodiversity have an increased stability.True or false?
I say true. :)

Answers

Ecosystems with greater biodiversity generally exhibit increased stability. Therefore, the given statement is true.

This is because biodiversity refers to the variety of species and their interactions within an ecosystem. When there is a high level of biodiversity, there are more species present.

The presence of a diverse array of species provides a form of biological insurance for the ecosystem. If one species is negatively impacted by a disturbance or environmental change, other species with different adaptations and ecological functions can compensate for or fill the ecological niche.

Learn more about ecosystems, here:

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the correct solution is TRUE

What came first the chicken or the egg