physical and chemical barriers that form the first line of innate defense include group of answer choices the acidity of the stomach. tear fluid from the eye. an un-punctured skin. mucus and cilia of the respiratory tract. all answers are correct.

An environmental indicator of habitat health may be the sensitivity of damselfly larvae to chemical pollutants. True

Nymphal damselflies have six delicate legs, huge eyes, and little wing buds on the rear of the thorax. They are aquatic, slender, and typically dull insects. The three gills are arranged in a tripod shape and resemble leaves or paddles. Although the reasons for a population collapse are rather diverse, they may include predation, waste buildup, and a lack of natural supplies necessary for growth and reproduction. Competition between individuals of the same species and an originally overpopulated group can also contribute to it. Any association or interaction between two diverse species is referred to as symbiosis. The type of symbiosis that occurs depends on whether health

To learn more about health  please click on below link

https://brainly.com/question/8411886

#SPJ4

The label on the animal cells for each organelle is attached below.

Cell membrane: The cell membrane is the outer layer of the cell. It protects the cell from its surroundings and controls what enters and leaves the cell.

Rough endoplasmic reticulum: The rough endoplasmic reticulum is a network of membranous sacs that are dotted with ribosomes. The ribosomes are responsible for making proteins.

Ribosome: Ribosomes are small organelles that are responsible for making proteins. They are found free in the cytoplasm or attached to the rough endoplasmic reticulum.

Golgi apparatus: The Golgi apparatus is a stack of flattened sacs that are involved in processing and packaging proteins.

Mitochondrion: The mitochondrion is the "powerhouse" of the cell. It produces energy in the form of ATP.

Centrosome: The centrosome is a small structure that contains two centrioles. The centrioles are involved in cell division.

Smooth endoplasmic reticulum: The smooth endoplasmic reticulum is a network of membranous sacs that are not dotted with ribosomes. The smooth endoplasmic reticulum is involved in a variety of functions, including lipid synthesis and detoxification.

Nucleus: The nucleus is the control center of the cell. It contains the cell's DNA, which is the genetic material.

Find out more on animal cell here: https://brainly.com/question/27121829

#SPJ1

Answer:

the right answer is not aviable at this time

Explanation:

The mass of an object and its distance from other objects both affect its gravitational potential energy.

The work required per unit mass by an external force to move a heavy object from a predetermined position of zero potential, often infinity, to a certain point in The gravitational potential is the name given to a gravitational field.

An object's location in the mass-Earth system determines the gravitational potential energy of any object close to the surface of the planet.

There is a stronger gravitational pull for heavier items. Remember that a larger object does not necessarily have more mass. Gravitational pull is stronger for objects that are nearer to one another.

Therefore, At an infinite distance from the earth, the gravitational potential is zero.

Learn more about earth's here:

https://brainly.com/question/15571645

#SPJ2

The new planet has more mass than Earth but the same radius. The mass of the astronaut will be calculated by the use of Newton's gravitational equation. The weight of the astronaut depends completely on its mass and the gravitational acceleration of the planet.

Gravitational acceleration is directly proportional to the mass of the planet and indirectly proportional to the radius of the planet. Hence, when the gravitational acceleration increases the planet's mass will increase therefore the radius will decrease. The astronaut's mass will depend on these factors.

Learn more about Gravitational acceleration, here

https://brainly.com/question/3009841

#SPJ1

Answer:

nitrobacter bacteria is the bacteria that converts ammonia to nitrites and nitrates.

Answer:

I think the answer is A

Explanation:

Because all cells must perform basic functions to survive

In an organism with more than one cell, each of its cells must perform all basic life functions to survive. Thus option A is correct.

Cell is the basic unit of any living organism present  in animal, plant, microbes etc; Bacteria are unicellular organism where as higher eukaryotic organisms are multicellular in nature like plants and animal cell.

Prokaryotic cells are the most simplest form of cell which  have a cell membrane, cytoplasm, ribosomes where protein synthesis occur, and nucleoid genetic material are present, most of bacteria have cell wall,   reproduce by binary fission.

The eukaryotic cells have all the organelles like it has outer covering  cell membranes, cytoplasm, ribosomes, and nucleus, rough endoplasmic reticulum for protein assembly, smooth endoplasmic reticulum, Golgi apparatus for protein sorting and exporting.

It has mitochondria the power house, a cytoskeleton for structure of the cell and communication, and  lysosomes or peroxisomes for digestion of waste, vacuoles for water storage, chloroplasts for photosynthesis.

Thus option A is correct.

For more details regarding cell, visit:

brainly.com/question/1434146

#SPJ2

To protect and organize cells.

Answer:

i believe the answer is jellyfish im sorry if its wrong

Explanation:

The digestive process is divided into four steps: ingestion, chemical and mechanical food breakdown, nutrient absorption, and expulsion of indigestible food.

What does the digestive process entail?

The digestive process starts as soon as something is chewed. In order for food to pass more easily through your esophagus and into your stomach, saliva, a digestive juice produced by your salivary glands, moistens the food. The carbs in food also begin to be broken down by an enzyme found in saliva.

Motility, digestion, absorption, and secretion are the four fundamental functions of the digestive system. Our digestive system transforms our food into energy that we can use.

The digestive system's initial function is to take in food through the mouth. The "ingesting" procedure must take place before anything else can happen.

The complete question is:

Some students were building a model of a digestive system. Which choice best describes a process they should show with their model?

a) F Tissues digest food for the organ system to absorb.

b) G Cells digest food, which is then absorbed by organs.

c) Organs digest food by working together as a system.

d) The organ system uses specialized cells to digest food.

To learn more about digestive system refer to:

brainly.com/question/956634

#SPJ1

Answer:Chloroplasts,is NOT found in animal cells

Explanation:

The renal capsule is not a layer of the alimentary canal.

The alimentary canal is the series of tubes that run from the mouth to the anus and are involved in digestion and the absorption of nutrients.

The layers of the alimentary canal include the mucosa, submucosa, muscularis externa, and serosa. The renal capsule is a layer that surrounds the kidney, and it is not part of the alimentary canal. Instead, the renal capsule helps to protect the kidney and regulate fluid balance in the body.

To learn more about alimentary canal, visit:

https://brainly.com/question/3725018#

#SPJ11

Menopause, which refers to the termination of fertility and a severe decline in hormones experienced by women, is not something that men go through.

Menopause is a normal biological process that marks the end of a woman's reproductive years. It normally affects women between the ages of 45 and 55. The production of oestrogen and progesterone hormones is significantly reduced during menopause, which causes a number of physical and psychological changes. Men, on the other hand, do not experience a similar procedure. While it is true that men undergo changes in their hormone levels as they age, such as a steady decrease in testosterone production, these changes take place more gradually and don't lead to a clear "male menopause" or an end to fertility.

Learn more about menopause here:

https://brainly.com/question/29603703

#SPJ11

Proteins with nuclear localization signals, that are bound to nuclear import receptors enter the nucleus through nuclear pore complex.

Proteins having nuclear localization signals are transported inward through the nuclear pore complexes, whereas RNA molecules and newly made ribosomal subunits contain nuclear export signals that direct the active transport outward through pore complexes.

Nuclear proteins are transported actively through nuclear pores by a selective and mediated process. The process is mediated by nuclear localization signal and can be divided into two steps, that are : targeting to the pores and translocation through the pores.

To know more about nuclear pore complex, refer

https://brainly.com/question/28295135

#SPJ4

Answer:

Answer is C

Explanation: Please MARK brainiest

Eukaroyote

Answer:

Answer is eukaryote.

Explanation:

A eukaryote is any organism whose cells have a cell nucleus and other organelles enclosed within membranes.

I hope it's helpful!

Before a g protein can activate adenylate cyclase, is dissociates into two parts. Thus option C is correct.

G proteins refers to guanine nucleotide-binding proteins which belongs to GTPase family.

These proteins help in transmitting signals from a variety of stimuli.

The activity can be controlled by binding and hydrolysis of guanosine triphosphate (GTP) to guanosine diphosphate (GDP).

There are  different types of  G proteins such as monomeric small GTPases and heterotrimeric G protein complexes

Heterotrimeric G proteins present in a cell activated by G protein-coupled receptors (GPCRs); they both work together to transmit signals, hormones,  neurotransmitters etc.

Thus option C is correct.

Learn more about G protein, here:

https://brainly.com/question/12578485

#SPJ4

The connection between the fossil seashells and geologic time is that the fossil seashells are Index fossils.

Fossil seashells, like other types of fossils, provide valuable information about the past and are used in determining the relative age of rock layers and establishing a timeline of Earth's history. Certain seashell species have lived for specific periods of time and are known as index fossils. These index fossils are used by geologists to correlate and date rock layers in different locations. By examining the presence or absence of specific seashell species in different rock layers, scientists can infer the relative age of the rocks and determine the sequence of events in geologic time.

learn more about:- Index fossils here

https://brainly.com/question/2495177

#SPJ11

The position of mammals in evolution is best described as:  Mammals occupy a relatively advanced position in evolution.

Mammals are a group of vertebrates belonging to the class Mammalia. They are characterized by features such as the presence of mammary glands, which produce milk for nourishing their young, and the presence of hair or fur on their bodies. Mammals also have specialized teeth for different types of feeding habits and a unique reproductive system.

In the evolutionary tree of life, mammals are considered to be a relatively advanced group. They belong to the clade of amniotes, which includes reptiles, birds, and mammals. Mammals share a common ancestor with reptiles but have evolved many unique characteristics and adaptations that have allowed them to thrive in various habitats around the world.

Mammals have undergone significant diversification and radiations throughout evolutionary history. They have adapted to various ecological niches, ranging from aquatic environments to terrestrial habitats, and from small insect-eating mammals to large herbivorous and carnivorous species.

Overall, the position of mammals in evolution is best described as relatively advanced, considering their unique adaptations, diverse forms, and ecological success.

To know more about mammals, refer here:

https://brainly.com/question/32727134#

#SPJ11

The shortest DNA strand in the DNA sample from the Gel Electrophoresis lab activity on the Learn. Genetics website is approximately 1500 base pairs (bp) in size. So, option D is correct.

During the Gel Electrophoresis lab activity, DNA samples of different sizes were loaded onto the gel. Gel Electrophoresis separates DNA fragments based on their size, with smaller fragments moving faster and traveling farther on the gel. By comparing the migration distance of the DNA sample to known DNA markers of known sizes, we can estimate the size of the DNA fragment. In this case, the shortest DNA fragment observed in the activity corresponds to approximately 1500 base pairs (bp) in size.

To know more about Gel Electrophoresis

brainly.com/question/29270091

#SPJ11

Answer: A and B

Explanation:

The shown butterfly in the diagram is - Papilio polyxenes.

Butterflies usually are identified by the colors and patterns on their wings. To identify an organism using a dichotomous key, compare the organism’s traits to the first pair of descriptive statements on the key.

The points on the hindwings identify the butterfly as

1. Hindwings rounded ………………… Goto 3

2. Wings mainly yellow …………… Papilio glaucus

Wings mainly black ………….. Papilio polyxenes

3. Wings orange with black piping…Danaus plexippus

Wings yellow with black edges….. Colias philodice

Thus, the shown butterfly in the diagram is - Papilio polyxenes.

Learn more:

https://brainly.com/question/2235448

Answer:

They all contain the same elements: carbon, hydrogen, oxygen, and nitrogen

Answer:

The correct answer is B)

Explanation:

According to discovering made in relation to evolution, the Australopithecus Africanus (discovered in 1924), the Australopithecus Garhi  (discovered in 1990), and the Homo Habilis (discovered in 1960) all shared the same period - 2.5-1.0 MYA.

Cheers!

Answer:

Consumer

Explanation:

Heterotrophs rely on other organisms for food, so they are consumers.

Hope this helps! :)

Answer:

C.consumer on Edge 2021

Explanation:

In ecology, an organism that obtains nutrients by consuming other organisms is called a heterotroph. Unlike autotrophs—organisms that can synthesize their own nutrients from inorganic substances—heterotrophs cannot produce their own food.

Yes. It`s been common to read and even watch news about how plastic has affected the environment, wildlife and human health. Also, many initiatives have been taken, such as the suspension of the use of straws in restaurants, for example. That shows that more and more people are aware of the damage plastic can cause.

Answer:

What is the chemical formula of oxygen? O2

Glucoseis a simple sugar. What is the chemical formula of glucose? C6H12O6

What is the chemical formula of carbon dioxide? co2

Explanation:

Gizmo Warm-upThe Cell Energy Cycle Gizmo™ illustrates two processes that are essential to life: photosynthesisand cellular respiratio

All cells make ATP by pathways that release chemical energy from organic compounds such as glucose. 2. Cells store chemical energy as ATP to use in future reactions that require energy input.

Answer:

D...

Explanation:

It will take about 10.12 hours for the size of the colony to triple. (a) the function N(t) as a function of time is given by N(t) = N_o e^[(ln2/3)t]. (b) t = ln3/0.231 = 10.12 hours.

a) If the number of bacteria doubles in 3 hours, find the rate of growth. Then write the function N(t) as a function of time. Given that N(t)= N_o e^ktLet us consider, N_o= Number of cells at t = 0And N = 2N_o; Number of cells after 3 hours = t.

N(t) = N_o e^kt.................(i)

N(t) = 2N_oWhen t = 3, N = 2N_oPut these values in equation (i)

2N_o = N_o e^(3k)2 = e^(3k)ln2 = 3kSo, k = ln2/3

The rate of growth, k = ln2/3.N(t) = N_o e^ktN(t) = N_o e^[(ln2/3)t].

b)Let us consider,

N_o = Number of cells at t = 0

N = 3N_o, the Number of cells when the colony size triples

N(t) = N_o e^(kt).........(i)

N = 3N_oPut these values in equation (i)

3N_o = N_o e^(kt)3 = e^(kt)ln3 = ktSo, t = ln3/kNow, k = ln2/3= 0.231.

To know more about values please refer to:

https://brainly.com/question/30145972

#SPJ11

The rate of growth k, for a bacteria colony that doubles every 3 hours, is solved to be the natural log of 2 divided by 3, using the law of uninhabited growth formula. The function of time thus becomes N(t) = N_0 * e^(0.231)t. Given this growth rate, the colony will triple in size in approximately 4.48 hours.

The law of uninhabited growth, N(t)=N_0 e^kt, explains the rate at which bacteria grow exponentially in an unlimited supply of nutrients. First, let's find the rate of growth, represented by k, knowing that the bacteria double in size every 3 hours. In this case, we know N(t) is twice the initial size (2 N_0), and t = 3.

So, 2 N_0 = N_0 e^3k, which simplifies to 2 = e^3k. We could solve this for k using natural logarithms, yielding k = ln(2) / 3.

The growth function of time then becomes N(t) = N_0 * e^[(ln(2)/3)*t] or approximately N(t) = N_0 * e^(0.231)t. This formula allows you to calculate the number of bacteria at any given time.

For part b), we want the size of the colony to triple, so we set N(t) equal to 3 N_0 and solve for t. Thus, we get 3 = e^(kt) and solving gives t = ln(3)/k. Substituting k = ln(2) / 3, we find that it will take approximately 4.48 hours for the colony size to triple.

https://brainly.com/question/36625277

#SPJ12

Answer: The answer is attached with the image given below.

Explanation: The first diagram has the concentration of water molecules higher inside the cell than that of the surroundings, as a result, water molecules move outside the cell thereby causing the cell to shrivel.

The second diagram has a higher concentration of water molecules in the surrounding than inside the cell. As a result, the water molecules from outside will move inside the cell causing the cell to burst.

In the third diagram, the concentration of water molecules in the solution is the same as the inside of the cell. As a result, no net movement of water molecules occurs, causing no effect on the cell.

Learn more about osmosis-

brainly.com/question/19164620