Describe the function of each organelle.
Vacuoles
Answers
Answer:
In biology, a vacuole is an area of a cell that is devoid of cytoplasm, membrane-lined, and filled with fluid. Vacuoles are crucial cytoplasmic organs (organelles), particularly in protozoa (single-celled eukaryotic creatures), carrying out tasks such water storage, intake, digesting, excretion, and expulsion. Plant cells frequently have big core vacuoles, which allow them to grow large without acquiring the mass that would make metabolism challenging. Plants, fungi, algae, and certain other species also store potent secondary compounds in their vacuoles to shield the cell from self-toxicity, such as tannins or other biological colors.
Related Questions
which among the organisms on earth has the greatest number identified or named
A. Animals
B.plants
C.fungi
D.bacteria
Answers
Answer:
i think it dddddd
Explanation:
Animals are among the organisms on earth which has the greatest number
identified because it is divided into a lot of categories.
Animals exist in every part of the earth and comprises of insects, birds,
mammals , humans etc.
Insect species alone which scientists believe to exist on Earth is about a
million with a lot of them still yet to be discovered or seen at all. This makes
animals to have the highest number identified.
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Some factors in a particular ecosystem include: sunlight, alfalfa, rabbits, hawks, and mice. Of these factors, which one is the most important to the survival of the ecosystem?
Answers
A famine relief effort is being mounted and there are three types of food bundles that can be flown out during each delivery. Bundle 1 has 4 kg. of flour, 4 kg. of sugar and 12 litres of water. Bundle 2 has 12 kg. of flour, 4 kg. of sugar and 4 litres of water and Bundle 3 has 8 kg. of flour, 8 kg. of sugar and 8 litres of water. The relief agency has 5200 kg. of flour, 3712 kg. of sugar and 6000 litres of water for each shipment. Bundle 1 can provide for 10 people between deliveries, Bundle 2 for 8 people and Bundle 3 for 11 people. How many bundles of each type should the relief agency send on each flight in order to maximize the number of people being fed. Do this problem by setting up a linear programming problem and determining the vertices of the feasibility set. Enter the number of bundles of types 1,2, and 3 (in that order) into the answer box below, separated with commas.
Answers
The relief agency should send 60 bundles of type 1, 100 bundles of type 2, and 150 bundles of type 3 on each flight to maximize the number of people being fed.
To solve the linear programming problem, we need to set up the constraints and objective function. Let's define:
x1 = number of bundles of type 1
x2 = number of bundles of type 2
x3 = number of bundles of type 3
The constraints are:
4x1 + 12x2 + 8x3 ≤ 5200 (constraint for flour)
4x1 + 4x2 + 8x3 ≤ 3712 (constraint for sugar)
12x1 + 4x2 + 8x3 ≤ 6000 (constraint for water)
The objective function is to maximize the number of people being fed, which is given by:
10x1 + 8x2 + 11x3 (number of people fed)
We can now solve this linear programming problem using the given constraints and objective function. The solution will provide the number of bundles of each type that should be sent on each flight to maximize the number of people being fed.
Using an optimization algorithm the optimal solution is:
x1 = 60 (number of bundles of type 1)
x2 = 100 (number of bundles of type 2)
x3 = 150 (number of bundles of type 3)
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need a little help on this!!
Graded Assignment
Semester Assessment, Part 2
Complete this teacher-scored portion of the assessment and submit it to your teacher.
Total score: ____ of 15 points
(Score for Question 1: ___ of 5 points)
1. Compare the digestive systems of a flatworm and a human. Be sure to include examples of the various structures found in the digestive systems of both organisms.
Answer:
Type your answer here.
(Score for Question 2: ___ of 5 points)
2. Name the trophic levels in an ecosystem and explain how energy moves through the trophic levels. Use the terms food chain and food web in the discussion.
Answer:
Type your answer here.
(Score for Question 3: ___ of 5 points)
3. Describe two of the following environmental issues that confront modern society: global warming, air pollution, acid rain, and hazardous waste. Explain how the issues are problems for society and how scientific studies can inform people concerned with the issues.
Answer:
Type your answer here.
Answers
Answer:
1. The digestive system of a flatworm is comprised of a single big solitary tube. Food is taken in from one end of the system, digested, and nutrients are absorbed within, while waste is ejected at the other end. Mechanical digestion takes place in the gizzard.
In humans, however, food goes significantly further through the convoluted tubules after ingestion, and food remains in the stomach for a longer period of time. Food is mechanically digested in the mouth, then transferred through the esophagus, stomach, small intestine, and large intestine, and waste leaves through the anus.
2. Producers, primary consumers, secondary consumers, and tertiary consumers.
3. CAPITALISM: Among the most common criticisms of capitalism claim that it is intrinsically exploitative, alienating, unstable, and unsustainable, and that it causes vast economic inequalities, commodifies individuals, is anti-democratic and leads to the degradation of human rights.
HAZARDOUS WASTE: Because it pollutes every component of the environment, including air, water, and land, hazardous waste might be considered a crime by our civilization. This has the potential to cause a major issue. What it does is affect the natural lifestyle of many species that comprise the ecosystem, perhaps resulting in a tragedy for all life on Earth.
What is a microsphere?
Answers
Question 1 of 10
Carbon, hydrogen, and oxygen can combine to form monomers called fatty
acids. Which type of macromolecule contains many fatty acids?
A. Lipid
B. Nucleic acid
C. Protein
D. Carbohydrate
SUBMIT
Answers
Answer:lipid
Explanation:
Survival of the fittest and evolution were proposed by what scientist?.
Answers
Answer:
Charles darwin
Explanation:
i looked it up
True or False: Only one species may be affected by human activity.
PLZZ HELP WILL BRAINLIST IF CORRECT!
Answers
Answer:
False
Explanation:
Many species may be affected by human activity in several ways such as pollution, hunting, overfishing, etc.
Gross primary productivity is higher than net primary productivity. The difference between the two is a. the amount of energy that producers burn when they metabolize. b. typically the ratio between the biomass of producers and the biomass of consumers. c. an important measure of ecosystem productivity. d. energy that is lost into outer space due to physiological inefficiencies. e. untapped energy that is stored in plant roots.
Answers
Gross primary productivity (GPP) is higher than net primary productivity (NPP). The difference between the two is (a) the amount of energy that producers burn when they metabolize. This energy is used for processes like respiration and maintenance, leaving the remaining energy as NPP, which is available for consumption by other organisms in the ecosystem.
The statement that gross primary productivity is higher than net primary productivity is true. The difference between the two is typically the ratio between the biomass of producers and the biomass of consumers. This difference is an important measure of ecosystem productivity.
The amount of energy that producers burn when they metabolize, energy that is lost into outer space due to physiological inefficiencies, and untapped energy that is stored in plant roots are not directly related to the difference between gross and net primary productivity.
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What picture shows which kind of cell
Answers
Animal cell
Explanation:Animal cells are typical of the eukaryotic cell, enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles. Unlike the eukaryotic cells of plants and fungi, animal cells do not have a cell wall.
What are the 8 main environmental pressures?
Answers
Answer:
Climate change, shortage of natural resources, waste in the environment, decreasing biological diversity, toxic chemicals, water pollution, shortage of water resources and air pollution.
hope this helped!
rhythmic waves of muscular contraction to move food from the esophagus to the stomach. this is called ____
Answers
Answer:
Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.
Explanation:
What's the difference between natural selection and genetic engineering?.
Answers
Answer:
Conventional breeding relies primarily on selection, using natural processes of sexual and asexual reproduction. Genetic engineering utilizes a process of insertion of genetic material, via a gene gun or other direct gene introduction methods, or by a specially designed bacterial truck, which does not occur in nature.
Chec
When Mendel crossed a plant with green peas and a plant with yellow peas, what color peas did the offspring have?
O All offspring had green peas.
O All offspring had yellow peas.
O Half of the offspring had yellow peas and half had green peas.
O Some of the offspring had yellow peas and some had yellow-green peas
Answers
Answer:
The answer is B: All offspring had yellow peas.
Explanation:
:)
Stars change over millions of years.
O True
O False
Answers
Answer:
true
Explanation:
stars can change bc Stars change over time. ... It is in the clouds of dust and gas that stars are born. As more and more of the gas (which is mostly hydrogen) is pulled together by gravity into a cloud, the cloud starts to spin. The gas atoms start to bump into each other faster and faster.
Lipase, protease and amylase are enzymes secreted into the alimentary canal. Name one organ that secrets each enzyme. Choose your answers from the list.
colon ,gall bladder , liver, pancreas, rectum, salivary glands
you can use organs only once
lipase____________
protease _____________
amylase ____________
Answers
Answer:
Lipase is secreted from the liver.
Protease is secreted from the pancreas.
Amylase is secreted from the salivary gland
Who knows the answer to this the answer to this smart people Answer
Answers
Answer:I do not know if you did that by accident but the answer is Sweating as it is a type of way humans cool such as how dogs pant to cool themselves.-Lucy
Explanation:
Which of the following best represents what is displayed in the image below? (4 points)
The graphic shows a matching list: 'Roots' is matched with 'absorbs water and nutrients' and 'anchor the plant.' 'Stem' is matched with 'provide structural support and transport water and minerals.' 'Leaves' is matched with 'absorb sunlight.'
The completed plant tissues and the cells that initiate their growth
The differences between plant structures and the mechanism that produces them
The types of plant cells and their functions within the plant
The relationship between different structures in a plant and their functions
Answers
Answer:
The relationship between different structures in a plant and their functions
Explanation:
The roots, stem, and leaves are the different structures in a plant and they are matched to their functions (role/job). So the image represents how the different structures and functions correlate. Also, I took the test.
the iliacus is the muscle that can be found superficial to the iliac fossa.truefalse
Answers
True. The iliacus muscle is a hip flexor muscle that is located in the anterior compartment of the thigh. It originates from the iliac fossa, a depression in the pelvis, and inserts onto the lesser trochanter of the femur.
The iliacus muscle works in concert with the psoas muscle to flex the hip joint and is important for movements such as walking, running, and climbing stairs. The iliacus muscle is indeed located superficial to the iliac fossa. The iliac fossa is a shallow depression in the pelvic bone that is found on the lateral aspect of the hip bone. The iliacus muscle originates from the iliac fossa and runs from there to the lesser trochanter of the femur. Because of its location, the iliacus muscle is easily accessible through a surgical approach to the hip joint and is often used as a donor muscle for transplantation procedures in the lower extremity.
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What is the most important organism on the food web?
Provide a link to a resource if can.
Answers
3. If two creatures without wings mate, can their offspring have wings? Explain your answer.
Answers
Answer:
It would depend if it is like a bird or something not if it is:
Explanation:
Yes their offspring could have wings if it is both of them have a recessive gene of wings if they do not have a recessive gene for wings then they cannot.
What conclusion can be drawn from the diagram to support the theory of evolution?
Man evolved from gorillas which evolved from chimpanzees.
Gibbons are most closely related to man because of similarities in their skeletal structure.
Orangutans have a larger jaw size than chimpanzees, allowing them to have a more carnivorous diet.
Gorillas continued to walk on all four limbs to move around on the floor of forests, while man became bipedal to live in grasslands in order to hunt and carry food.
Answers
Answer:
Following conclusion could be drawn from the given diagram;
Gorillas continued to walk on all four limbs to move around on the floor of forests, while man became bipedal to live in grasslands in order to hunt and carry food.
Gorillas continued to walk on all four limbs to move around on the floor of forests, while man became bipedal to live in grasslands in order to hunt and carry food.
What is theory of evolution?The theory of evolution is a scientific explanation for the diversity of life on Earth. It explains how species of organisms change over time through the processes of natural selection, genetic variation, and inheritance.
The theory of evolution is supported by evidence from many different areas of science, including genetics, geology, comparative anatomy, and biogeography. The theory proposes that all species, both past and present, are related through a common ancestry and have evolved over millions of years through a process of gradual change and adaptation. It is considered one of the most fundamental and well-supported scientific theories in biology.
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Eric is hanging a rectangle mirror that has a diagonal of 47 inches with an angle of depression of 60°. How many square inches is the mirror? (round to nearest tenth)
A) 956. 5 in2
B) 1,104. 5 in2
C) 1,365. 5 in2
D) 1795. 5 in2
Answers
Given that Eric is hanging a rectangle mirror that has a diagonal of 47 inches with an angle of depression of 60°. We are supposed to calculate the area of the mirror.
Let's draw the diagram for this question:From the diagram we can see that the given rectangle is being divided into two right \(triangles\). And the given angle is the angle of depression which can be written as the angle of elevation of the person who is standing on the ground. The diagonal of the rectangle can be calculated as follows: If we consider a right triangle, one leg of the triangle is the length of the rectangle and the other leg is the width of the rectangle. And the diagonal of the rectangle is the hypotenuse of the right triangle using Pythagoras theorem we get:
Width2 + Length2 = Diagonal2Length2 = Diagonal2 - Width2Length = √(47² - 36²)Length = √(2209 - 1296)Length = √913Length = 30.19 inches Let's calculate the height of the rectangle: If we consider the right triangle with the angle of 60 degrees, the opposite side to the angle of 60 degrees is the height of the rectangle. And we have hypotenuse and we can use trigonometry formula to find the height.Height = Hypotenuse * sin(60)Height = 47 * sin(60)Height = 47 * 0.866Height = 40.75 inchesNow, we can calculate the area of the rectangle using the following formula: Area = length * widthArea = 30.19 * 40.75Area = 1231.2425 inches^2
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Scientists use a process called gel electrophoresis to separate DNA fragments. The process involves placing a mixture of DNA fragments at one end of a slab of porous gel. Then a power source is used to generate an electric potential across the gel.
The diagram shows the process of gel electrophoresis. First, DNA fragments, mixed with a restriction enzyme, are placed at one end of a slab of gel. Then a power source is applied; the longer DNA fragments stay near the negatively charged end, and the shorter fragments move toward the positive end.
Gel electrophoresis is successful because of which property of the DNA fragments?
A. The DNA fragments may be positively-charged, negatively-charged, or neutral.
B. The DNA fragments travel at different speeds through the gel.
C. The DNA fragments travel at the same speed through the gel.
D. The DNA fragments chemically react with the gel in different ways.
Answers
Answer:
C. The DNA fragments travel at different speeds through the gel.
Here ia a simplified food web for some of the organisms you might find in Canyonlands National Park in Utah. Which of these would NOT be a primary consumer?
Answers
Answer:
A) Producers
Explanation:
All of the plants are producers. They make their own food from photosynthesis, and organisms that eat them get some of that energy to use as well.
Answer: Coopers hawk
Explanation:
it's the only one not getting eaten by something else.
in one or two sentences explain why infrastructure is a barrier to the economy of sub Saharan Africa 
Answers
Infrastructure is a barrier to the economy of sub-Saharan Africa because inadequate and poor-quality infrastructure, including transportation, energy, and communication systems, limits productivity, hinders trade, and increases the cost of doing business, making it difficult for businesses to operate efficiently and the region to attract foreign investment.
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Congestive heart failure means that the pumping efficiency of the heart is depressed so that there is inadequate delivery of blood to body tissues. T/F
Answers
The answer is yes. Congestive heart failure refers to a clinical disorder in which the heart is unable to supply enough blood flow to meet the body's needs. It's a critical health problem that affects people all around the world.
Congestive heart failure is a progressive condition in which the heart muscles weaken, making it harder for them to pump blood. The heart's pumping power, or ejection fraction, is reduced in this condition, which means that the heart isn't capable of pumping enough blood to meet the body's demands. When the heart is unable to pump enough blood, the body responds by retaining water and salt, resulting in fluid buildup in the lungs and other tissues.
The heart's pumping capacity is diminished in people with congestive heart failure, which means that the body's tissues aren't receiving enough oxygenated blood. As a result, people with congestive heart failure may experience shortness of breath, fatigue, swelling in the legs, feet, or ankles, and an irregular heartbeat.
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To make his fish farm more sustainable, a farmer stops using feed made from wild-caught fish and starts using feed made from grains instead. What is the main reason that the ethics of using grain-based feed are still questionable?
A.
Growing the grain has its own costs to the environment.
B.
It places the fish farmers in competition with grain farmers.
C.
Changing feed sources leads to the overpopulation of wild fish.
D.
It fools consumers into thinking the farmed fish are healthier.
Answers
Option A. The main reason that the ethics of using grain-based feed are still questionable is because: Growing the grain has its own costs to the environment.
What is the reason that this is questionable?The main reason that the ethics of using grain-based feed for fish farming are still questionable is that growing the grain has its own costs to the environment (option A). While using grain-based feed can reduce pressure on wild fish populations, it can also contribute to environmental problems such as deforestation, soil erosion, and water pollution. Growing crops for animal feed can require large amounts of water, fertilizer, and energy, and can lead to the conversion of natural habitats such as forests and wetlands into agricultural land.
Additionally, some types of feed crops, such as soy and corn, are often genetically modified or grown with the use of pesticides and herbicides, which can have negative environmental and health impacts. Therefore, while using grain-based feed can be a step towards more sustainable fish farming, it is important to consider the broader environmental impacts of the feed production and distribution process.
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Into which blood vessel will lymph flow if it starts at the red arrow? O Left subclavian vein O Right subclavian vein Inferior vena cava O Right lymphatic duct Submit Request Answer
Answers
Into the right lymphatic duct blood vessel will lymph flow if it starts at the red arrow. Option c is correct.
The lymphatic system is responsible for maintaining fluid balance in the body and fighting infections. Lymph is the fluid that flows through the lymphatic vessels and is eventually returned to the bloodstream.
The lymphatic system consists of a network of lymphatic vessels, lymph nodes, and lymphatic organs. The right lymphatic duct is a short lymphatic vessel that drains lymph from the upper right side of the body, including the right arm, right side of the chest, and right side of the head and neck. The right lymphatic duct empties into the right subclavian vein, which is located near the red arrow in the image, and the lymph then flows into the bloodstream. Option c is correct.
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Facilitated diffusion and ______ are alike since neither requires energy
Answers
Answer:
simple diffusion
Explanation:
had this on my test before as well
hope this helps