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rusak2 [61]
3 years ago
5

Is the energy used by cells for work. It is produced within the_(organelle)

Biology
1 answer:
Dvinal [7]3 years ago
4 0

Answer:

ATP, Mitochondria, Cellular respiration.

Explanation:

The Krebs cycle of, cellular respiration, in the mitochondria results to the an accumulation of protons in the inter-membrane space of the organelle. This proton motive force is harnessed in the electron transport chain by ATP synthase to generate ATPs.

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Which element in lava is responsible for preserving the direction of the magnetic fields? (1 point)
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A. Iron-titanium oxide helps preserve the direction of magnetic fields

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3 years ago
10.1 Limits To Cell Growth
Sindrei [870]

Answer:

Cell size is determined by joint regulation of cell size and cell cycle duration.

Size dependent modulation of growth rate allows maintenance of cell size homeostasis.

Central carbon metabolism is key regulator of both cell size and cell cycle.

Size dependent regulation of metabolism and growth rate implies cell size sensing. As the cell increases in size the volume of the cell increases more rapidly than the surface area which causes a decrease in the cell's ratio of surface area to volume and makes it more difficult for the cell to move needed materials in and waste products out.

DNA- variety of genes are involved in the control of cell growth and division. The cell cycle is the cell’s way of replicating itself in an organized, step-by-step fashion. Tight regulation of this process ensures that a dividing cell’s DNA is copied properly, any errors in the DNA are repaired, and each daughter cell receives a full set of chromosomes. The cycle has checkpoints (also called restriction points), which allow certain genes to check for problems and halt the cycle for repairs if something goes wrong. If a cell has an error in its DNA that cannot be repaired, it may undergo programmed cell death (apoptosis). Apoptosis is a common process throughout life that helps the body get rid of cells it doesn’t need. Cells that undergo apoptosis break apart and are recycled by a type of white blood cell called a macrophage. Apoptosis protects the body by removing genetically damaged cells that could lead to cancer, and it plays an important role in the development of the embryo and the maintenance of adult tissues. Cancer results from a disruption of the normal regulation of the cell cycle. When the cycle proceeds without control, cells can divide without order and accumulate genetic defects that can lead to a cancerous tumor.

Nutrients and waste- The larger a cell becomes, the more demands the cell places on its DNA. In addition, the cell has more trouble moving enough nutrients and wastes across the cell membrane. The resulting decrease in the cell's ratio surface area to volume makes it more difficult for the cell to move needed materials in and waste products out.

Surface area of the cell- The amount of surface area available to each unit of the cell depends on the size of the cell. As a cell grows, it's surface area/volume ration decreases. At some point of the cells growth, the surface area/volume ratio becomes so small that the surface area is too small to supply raw materials to its volume. materials cannot enter the cell if the surface is too large. ... the cell may become too large to take in enough food and to remove enough wastes. waste products cannot leave the cell if the cell is too small.

Cell volume-

Explanation:

Hope this is helpful?

3 0
3 years ago
The leakiest capillaries, which allow large substances such as cells to cross the capillary walls are called?
ki77a [65]

The leakiest capillaries, which allow large substances such as cells to cross the capillary walls are called sinusoidal capillaries.

Sinusoidal capillaries are a unique kind of capillaries that are wide in diameter. The diameter of a sinusoidal capillary is 30 to 40 nm.

Sinusoidal capillaries can be found in the liver, spleen, and bone marrow. In the spleen, sinusoidal capillaries help in the filtration of blood. They remove broken red blood cells, antigens and other pathogens remains in the blood.

Sinusoidal capillaries are known as leakiest capillaries because all other capillaries have a narrow diameter and do not allow the passing of large substances. Sinusoidal capillaries are the only ones with a large diameter that allows the passing of larger substances.

To learn more about capillaries, click here:

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4 0
1 year ago
25 POINTS!! WILL MARK AS BRAINLIEST!!!!
Paha777 [63]

1 -

If the carrynig capacity of an area is 945, and it is carrying 1.100 individuals, what most likely will happen is that we'll see a decrease in the deers population, until it matches the carrying capacity. This will occur because there wont be enough resources available for all individuals.

Answer:

E.

2 -

The biotic and abiotic limitations are what determine the carrying capacity of a population. Which in other words is simply the amount of living and non-living things that can occupy an area.

If you get a wagon, and say the carrying capacity of that wagon is 100 people, you'll be counting the number of seats (number of people that can sit), the number of people that can stand plus non-living factors such as the space occupied by the seats, metal bars, etc.

Answer:

C.

Image 1-

Exploitation - you usually here this term being used with minerals in stuff, but it can also occur with animals through excessive hunting and poaching.

Invasive species - these are species that are introduced into an ecosystem they do not belong to, and therefore, most of the time cause a lot of damage and some of this damage can be irreveersible, like the extinction of species.

Answers:

B and C.

Image 2 -

There is not much to think about it this image. The regions with a very high threat posed by the invasive species are the ones that will suffer the most.

Answer:

North-American square.

Image 3-

Insects do not go out in windy or rainy days, also because these tend to be cold days.

Insects prefer sunny days, and cloudy days only if the temperature is hot.

Answer:

First week - Wednesday.

Second week - Monday, Friday and Saturday.

Hope it helped,

BioTeacher101

3 0
3 years ago
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A Broad-spectrum drug.
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