Answer:
Yes.
Explanation:
Yes, the positive charges on both calcium ions and sodium ions will responsible for the movement of these ions into or out of the cell because the membrane has negative charge which attract these positively charged calcium ions and potassium ions. These difference concentrations of sodium and potassium in the cell are due to the activity of cell membrane active transport system which moves sodium out of the cell and potassium into it.
Yes, the positive charges of calcium ions and sodium ions make these ions more likely to move into or out of the cell.
What do you mean by Diffusion?Diffusion may be defined as a process resulting from the random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.
The membrane of a cell possesses a negative charge, so it attracts these positive charge ions and makes a concentration difference that leads to the process of active transport through which sodium moves out of the cell and potassium into it.
Therefore, Yes, the positive charges of calcium ions and sodium ions make these ions more likely to move into or out of the cell.
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Traits are based on improving what primary factor in organisms?
a. behavior
b. anatomy
c. fitness
d. physiology
When new cells are formed through the process of mitosis, the number of chromosomes in the new cells
Answer:
remains the same as in the parent cell
Explanation:
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There are two types of vitamins: , which are stored in the liver (excess of them becomes toxic), and , which are excreted in the urine.
Answer:
I think these will be the fat soluble vitamins .....the A,D,E,K
Explanation:
The liver stores vitamin A, D, E, K and B12. The first four of these are all fat soluble. This means that the bile secreted during digestion is essential for absorbing them so that the body can use them. If bile production is compromised by liver damage, the proper absorption of these vitamins may be affected.
Yeast is added to bread dough before baking. After several minutes, the bread dough rises. Use your experiment to explain how respiration of yeast is important for the baking process.
Answer:
The purpose of any leavener is to produce the gas that makes bread rise. Yeast does this by feeding on the sugars in flour, and expelling carbon dioxide in the process.
While there are about 160 known species of yeast, Saccharomyces cerevisiae, commonly known as baker's yeast, is the one most often used in the kitchen. Yeast is tiny: Just one gram holds about 25 billion cells. That amount of fungi can churn out a significant amount of carbon dioxide, provided it has the simple sugars it uses as food. Fortunately, yeast can use its own enzymes to break down more complex sugars—like the granulated sugar in the activity below—into a form that it can consume.
Make a yeast-air balloon to get a better idea of what yeast can do
Yeast is a unicellular fungus which undergoes anaerobic respiration to produce ethanol and carbon dioxide gas.
How does yeast fermentation work in bread-making?In a process known as fermentation, yeast consumes the sugar present in the dough to produce carbon dioxide and alcohol.The dough is kept in a warm area throughout the baking process.Fermentation occurs as a result of heat.However, if the temperature is too high, the yeast is killed during the cooking process.As the dough ferments, carbon dioxide is created and trapped as microscopic air bubbles. The expansion of carbon dioxide during baking allows the bread to rise higher. During the bread-baking process, the alcohol created during fermentation evaporates.This is how yeast fermentation plays a vital role in the baking process.
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Which of the following types of interference will occur when the pulses in the figure meet?
A
no interference
B
constructive interference
C
destructive interference
D
total interference
Which type of movement of Earths crust caused these layers of rock to Deform?
A. Tilting of a plate
B. Sinking of a plate
C. Diverging of plates
D. Converging of plates
Answer:
D. Converging Of Plates
WILL GIVE BRAINLIST!!! How are population increases affect water resources in Texas?
Explain in a paragraph how speed and velocity impact blood spatter
Answer:
The force of the blood hitting a surface for medium velocity blood spatter is between 5 and 100 feet per second. This causes the droplets of blood to be smaller in diameter, and more like a spray. High velocity blood spatter: ... This causes the pattern of the blood to be similar to a fine spray.
Explanation:
An ecosystem experiences a ten year drought. As a result of the
drought, many plant and animal species are not able to survive.
What will be the effect on the biodiversity and sustainability of the
ecosystem?
A. Increased biodiversity and increased sustainability
B. Decreased biodiversity and increased sustainability
C. Increased biodiversity and decreased sustainability
D. Decreased biodiversity and
decreased sustainability
Please help I need to be done with this TODAY.
Answer:
D. Decreased biodiversity and decreased sustainability
Explanation:
The correct answer is Decreased biodiversity and decreased sustainability.
Weak sustainability is a concept inside environmental economics that states that 'human capital' can substitute 'herbal capital'. It is primarily based totally upon the paintings of Nobel Laureate Robert Solow, and John Hartwick.
Biodiversity loss refers back to the decline or disappearance of organic diversity, understood because of the style of residing matters that inhabit the planet, its distinctive ranges of the organic corporation, and their respective genetic variability, in addition to the herbal styles found in ecosystems.
What is an ecosystem?An environment is a geographic region wherein plants, animals, and different organisms, in addition to climate and landscape, paintings collectively shape a bubble of life. Ecosystems incorporate biotic or residing, parts, in addition to abiotic elements, or nonliving parts. Biotic elements consist of plants, animals, and different organisms although related, sustainable improvement and sustainability are distinctive concepts.
Hence clear that Decreased biodiversity and decreased sustainability are correct.
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16. In the process of digestion, food gets ready to exit the body. Which is another body system that aids in waste removal?
A. Excretory
A. Excretory
B. Endocrine
B. Endocrine
C. Skeletal
C. Skeletal
D. Nervous
Answer:
A) Excretory
Explanation:
A good way to remember is Ex - like exit so it will leave the body.
Answer:
A. Excretory
Explanation:
Bile is stored in the gallbladder until it is needed. The pancreas makes enzymes that help digest proteins, fats, and carbs. It also makes a substance that neutralizes stomach acid. These enzymes and bile travel through special pathways (called ducts) into the small intestine, where they help to break down food.
You need to borrow a pencil from a friend who is sick with a cold- she recently sneezed into her hands before passing the pencil to you. before you eat your lunch you decide to wash your hands. you never get the cold she was sick with
Answer:
You never get the cold but you can carry the cold to someone else
Explanation:
This makes you a carrier not a patient
Changes in a population of elk are shown in the graph below.
What is best represented by the letter X?
A:The average life span
B:Extinction
C:Biodiversity level of the habitat
D:Carrying Capasity
Answer:
Carrying capacity
Explanation:
Section X represents the maximum population size that the environment can support.
Changes in a population of elk are shown in the graph given. The best representation by the letter X is the carrying capacity of the population. Thus, the correct option is D.
What is Carrying capacity?The carrying capacity of an environment is the maximum population size of a biological species which can be sustained by that specific surrounding environment, it is given the food, habitat, water, and other resources that are available.
Carrying capacity can be defined as the environment's maximal load, which in population ecology corresponds to the particular population equilibrium of that area, when the number of deaths in a population equals the number of births as well as the immigration and emigration of individuals.
The effect of carrying capacity on the population dynamics is modelled through a logistic function. Carrying capacity is applied to the maximum population which an environment can support in the ecology, agriculture and fisheries.
Therefore, the correct option is D.
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A virus has wiped out the grasshopper population in the area. What effects to the ecosystem will most likely occur?
Answer:
Those who prey on grasshoppers will have their population decline while the grass population will rise.
Explanation:
Organisms need food to survive. If their food is gone, they won’t thrive as well. This isn’t saying they’ll go extinct, as they may have other food sources, but life will be harder with one food source gone. Since grasshoppers eat grass, the grass population will rise some due to a lack of predation. Hope it helps :)
which of the following statements best decribes how proteins and enzymes move within a cell?
a. the movement of proteins and enzymes within a cell is facilitated by membrane receptors.
b. the movement of proteins and enzymes within a cell is facilitated by special organelles called transport receptors.
c. the movement of proteins and enzymes within a cell is facilitated by intracellular receptors.
d. the movement of proteins and enzymes within a cell is facilitated by special organelles called magneto receptors.
3. What is the scientific term for a group of interacting individuals of the same type, living in the same area at the same time?
Answer: The scientific name is called POPULATION.
Explanation:
In basic ecological studies, POPULATION is defined as a group of interacting individual of the same type or species, living in the same area or habitat and at the same time.
Furthermore, to study a population of organisms, the different characteristics seen include:
--> Population size: This is important as it affects the survival of a given species in a habitat. A small population may be easily wiped out by events such a fire but a large population stands a better chance of survival.
--> Population frequency: This is simply how often the species occurs at different sites in a habitat.
--> Population density: this is the average number of individuals of a species per unit area of the habitat.
--> Percentage cover: This is the area of ground occupied by a given species in its habitat.
--> Distribution: This is the way in which individuals of a particular population are arranged in a habitat. They may be clumped, evenly spaced or randomly spaced.
Female ovaries play two central roles in the female reproductive system: they act as both glands and gonads Acting as glands, the
ovaries produce several female sex hormones.
controls the development of the mammary glands and uterus during
puberty and stimulates the development of the uterine lining during the menstrual cycle. What is this hormone produced by the
ovaries?
es )
A)
estrogen
B)
progesterone
testosterone
D)
human chorionic gonadotropin (HCG)
What is a DNA replication?
Answer:
DNA replication is the process by which DNA makes a copy of itself during cell division.
In your own words, how does the cost of making biofuel from microalgae compare to the cost of making fossil fuels?
Answer:
Biofuels like fuel from microalgae are very costly as compared to fossil fuels.
Explanation:
The cost of biofuels is too high as compared to that of fossil fuel. For instance,
the cost of 1 gallon of algal fuel is $32.81 per gallon while cost of diesel is $2.9 -3.2 per gallon.
However, biofuels are very environment friendly as compared to that of fossil fuels.
14. Which animals would best fill in the blank for this food chain? Plankton → __________ → crab a. The seaweed b. The small fish c. The starfish d. The shark
Answer:
c
Explanation:
plankton and crabs aren't technically fish, therefore eliminate b and d. seaweed would not progress to crab, therefore starfish is the correct answer.
The result of genes controlling mitosis not working properly is:
a. diabetes
b. high blood pressure
c. dyslexia
d. cancer
Answer:
d
Explanation:
This leads to unnecessary replication and out-of-control cell and tissue growth
What is weathering and runoff?
Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the earth,water, ice, acids, salts, plants and animals.
Runoff means the portion of precipitation on land that ultimately reaches streams often with dissolved or suspended material.
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Fill in the blanks please help!
Which of the statements is correct regarding water potential in plants
1. Water moves from a low water potential to a high water potential
2. Water moves from a. high water potential to a low water potential
3. Water potential in the leaves of trees is higher than the water potential in the roots of trees
11. Which of the following is an example of a pigment?
a. Glucose
c. Chlorophyll
b. Pyruvate
d. NADPH
Chlorophyll is an example of a pigment. Option C is correct.
The chlorophyll is the green pigment in the leaves. The chlorophyll absorbs the red and blue wavelengths of light from the sun. As a result, the light reflected from the leaves is less red and blue, making it appear green. Chlorophyll molecules are large.
Chlorophyll is made up of one central magnesium atom, surrounded by a ring of nitrogen-containing structures called porphyrins; attached to this ring is a chain of long carbon-hydrogen side chains called phytol chains.
The biosynthesis pathway of chlorophyll b involves the same enzyme as that of chlorophyllide.
Therefore the correct option is option C.
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help I want to know if I am correct?
Answer:
you are right. the answer is good. congrats.
Answer:
yes it's correct
Explanation:
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What system is interacting with the digestive system to cause perstalsis?
Answer:
The process of peristalsis is controlled by the medulla oblongata. Esophageal peristalsis is typically assessed by performing an esophageal motility study.
Explanation:
What is true of the most recent ice age?
O A. It made the dinosaurs extinct.
OB. The continents were much closer together than they are now.
O c. It occurred during the Mesozoic era.
O D. Sea levels were 300 feet lower than they are now.
What are villi, and in what organ system do they function?
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BRAINLYMENTALMENTEEven though the Sun contains 99% of the mass of the solar system, the Moon revolves around the Earth. Why doesn’t the Moon revolve around the Sun, which has much more mass than the Earth?
Match the vocabulary words below with the correct unit of measure:
Acceleration --> meters/second/second (m/s^2)
Acceleration measures how fast something is speeding up. Speed measures how far something goes in a certain amount of time; acceleration measure how fast that speed is increasing (does that make sense? ask question if you need more clarification).
Velocity --> meters/second (m/s) south
Velocity is speed with a direction. Above I explained what speed is.
Force --> Newtons (N)
That's just what force is measured in.
Distance --> meters (m)
Meters is a unit of distance, or how far it is. It's not moving so there is no time component.
Mass --> kilograms (kg)
Kilograms is a unit of mass. Generally anything with grams is going to be a unit of mass.
Hope this helps.