the immune system provides protection against many types of threats. identify the types of cells, organisms, and infectious agents that are recognized by the immune system. check all that apply. cancer cells, bacterie, viruses, a person's own skin cells, prions, transplanted cells from a donor

The true statement about chloroplasts is that they capture energy from sunlight (Option B).

Chloroplasts are organelles found in plant cells that contain chlorophyll and other pigments, which allow them to absorb light energy and convert it into chemical energy through photosynthesis. This process produces glucose and oxygen, which can then be used by the plant cell or released into the environment.

For the other options, chloroplasts do not produce proteins used by other parts of the cell (option a), give an animal cell its shape (option c), or contain an entire copy of a cell's genetic material (option D). Thus, the correct option is Option B.

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Answer: By going extinct.

Explanation: If there are no fish fish left then they cannot be renewable.

Answer:

I'm pretty sure the answer is b. Monosaccharides

Explanation:

Monosaccharides are simple sugars that contain fructose and glucose, which I believe maple syrup has.

Answer:

blood

Explanation:

blood-brain barrier

Nearly all plants are autotrophs, organisms that produce their own food. All plants are eukaryotes that contain many cells. In addition all plants cells are surrounded by cell walls

Explanation:

A: presence of cell walls B: Ability to obtain nutrients through absorption C: presence of chitin in cell walls D: ability to move

Character A, which separates plants from fungi and animals, is the presence of cell walls. Plants have cell walls composed of cellulose, while fungi and animals do not have cell walls. Character B, Fungi and animals are heterotrophs that obtain nutrients by absorbing organic material from their environment, while plants are autotrophs that can perform photosynthesis.

Character C, that fungi have, but animals don't, is the presence of chitin in their cell walls. Fungi have cell walls made of chitin, while animals do not possess cell walls. Character D, that animals have, but fungi don't, is the ability to move. Animals are generally capable of locomotion, while fungi are non-motile organisms that rely on other means, such as growth and spore dispersal.

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The question is inappropriate; the correct question is:

Eukaryotes Brush up on what you learned about eukaryotes this week! One could easily use the evolutionary tree labeled below to make a dichotomous key to separate the three main eukaryotic kingdoms of Plantae, Fungi, and Animalia. However, the Protista kingdom is a more difficult group to add to a simple key as there are many exceptions (see the right side of the tree). Using the tree above, answer each question below with the correct matching answer. Use each answer only once. 1. What is character A, which separates plants from fungi and animals? 2. What is character B, that both fungi and animals share, but plants don't have? 3. What is Character C, that fungi have, but animals don't? 4. What is character D, that animals have, but fungi don't?

Eukaryotes:

A four species lichen is capable of fixing nitrogen from the atmosphere, which a three species lichen is not able to do.

This is because the fourth species, a cyanobacteria, is able to convert atmospheric nitrogen into a form that can be used by the other three species in the lichen. This allows the lichen to grow in nitrogen-poor environments and contribute to the surrounding ecosystem.

The additional partner in a four species lichen is a nitrogen-fixing cyanobacterium, which provides the lichen with a source of nitrogen. Nitrogen is an essential nutrient for all organisms, and while many plants and bacteria can obtain nitrogen from the soil or other sources, lichens typically grow in nutrient-poor environments and rely on their photosynthetic partners for organic compounds and the additional partner for nitrogen. The presence of the nitrogen-fixing cyanobacterium in a four species lichen can enhance the lichen's growth and survival in nitrogen-limited environments.

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Answer:

The correct answer is D.) the curved surface of Earth.

Explanation:

The intensity of sunlight on Earth is affected by the curved surface of Earth, which causes the sunlight to spread out over a larger area. As a result, the intensity of sunlight is less at any given point on Earth's surface than it would be if Earth had a flat surface. This also explains why the poles receive less sunlight than the equator, as sunlight is spread out over a larger area near the poles due to the curvature of the Earth.

Factors such as the mass of Earth, the speed of Earth, and the number of rotations of Earth do not directly affect the intensity of sunlight on Earth.

Answer:

Besides wildfires, human settlements affect neighboring ecosystems through biotic processes, including exotic species introduction, wildlife subsidization, disease transfer, landcover conversion, fragmentation, and habitat loss.

In 1978, people were relocated to safe areas. The problem of Love Canal was instrumental in the passage of the the Superfund Act in 1980. This law requires companies to be responsible for hazardous chemicals that they put into the environment and to pay to clean up polluted sites, which can often cost hundreds of millions of dollars. Love Canal became a Superfund site in 1983 and as a result, several measures were taken to secure the toxic wastes. The land was capped so that water could not reach the waste, debris was cleaned from the nearby area, and contaminated soils were removed.

Sometimes it's up to the residents in an area to recognize the effects of hazardous waste and to get the government to find the responsible party and initiate cleanup. .

All of the following statements are true about tRNA:

a) tRNA carries special sequences known as codons.

b) Each tRNA binds a particular codon.

c) There are four types of tRNA.

tRNA, or transfer RNA, is a small RNA molecule that plays a crucial role in the process of protein synthesis in cells. Protein synthesis occurs in the ribosomes, which are the site of translation in cells. During translation, the information stored in the DNA code is used to synthesize proteins.

tRNA plays a key role in this process by acting as a bridge between the information stored in the DNA code and the sequence of amino acids that make up a protein. Each tRNA molecule carries a specific amino acid and is able to "read" a particular sequence of nucleotides, known as a codon, in the RNA molecule produced during transcription. The tRNA molecule brings the corresponding amino acid to the ribosome, where it is added to the growing protein chain.

In this way, tRNA helps to translate the genetic code stored in DNA into the sequence of amino acids that make up proteins. This process is essential for the proper functioning of cells and is vital for the proper development and function of organisms.

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Answer:

Lacks an well defined nucleus

Explanation:

Answer:

Answer:

Lacks an well defined nucleus

Explanation:

Explanation:

The enzyme which can work in both alkaline and acidic conditions is Trypsin.

Trypsin could be a protease chemical that capacities within the absorption of proteins. It is created within the pancreas and discharged into the little digestive system where it acts within the soluble environment.

In any case, trypsin can too be active in gently acidic conditions due to its capacity to endure a wide pH extend. This flexibility permits trypsin to operate successfully in both soluble and acidic situations amid the assimilation handle.

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The salinity of a sample of seawater that is 2.7 percent salt is 27 ppt.

Salinity refers to the measure of the concentration of dissolved salts in a given body of water. It is usually expressed in parts per thousand (ppt), which indicates the amount of salt dissolved in one thousand units of water.

To convert the percentage of salt to parts per thousand (ppt), we need to multiply the percentage by 10.

So, salinity ppt = 2.7 x 10 = 27 ppt

Therefore, if a sample of seawater is 2.7 percent salt, its salinity in parts per thousand (ppt) is 27 ppt.

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The seed coat of a cycad, ginkgo, and podocarpus plays an important role in the growth and germination of the seed.

The seed coat helps protect the embryo from external factors like disease, parasites, and other environmental threats, as well as providing support and structure for the developing seed.

The seed coat of a cycad contains a protective layer that is designed to prevent dehydration, provide insulation, and keep out harmful microorganisms.

The seed coat of a ginkgo is a thin layer of brownish-black scales that are formed by two layers of cells, the exocarp and the mesocarp.

The podocarpus has a seed coat composed of two layers: an outer layer of cells that protect the embryo and an inner layer of cells that provide structure and support.

The seed coat of a cycad is made up of wax, cuticle, and an outer layer of cells. The wax helps to protect the seed from water loss, while the cuticle helps to reduce the chances of infection and parasite infestation.

The outer layer of cells protects the embryo from harmful environmental factors and acts as a barrier to the entry of other organisms.

The seed coat of a ginkgo contains the sclereids which are thin-walled cells that form a dense layer around the embryo. These cells protect the seed from dehydration, temperature extremes, and external parasites. The podocarpus has a seed coat that helps to protect the embryo from drying out and from external parasites.

In conclusion, the seed coat of a cycad, ginkgo, and podocarpus plays an important role in the growth and germination of the seed.

The seed coat provides a protective layer to prevent dehydration, insulation, and keep out harmful microorganisms, as well as providing support and structure for the developing seed.

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Answer:

A convection current is basically where heat rises and cold sinks

Explanation:

When heat is added to something, it expands and rises. This leaves a lower pressure region behind and the surrounding cold rushes in. The cold then is heated and finally the head rises to the top. Then it is cooled. Then repeat :)

Answer:

C. On earth's surface directly above the initial rock slippage

Explanation:

A fault occurs when the earth's crust breaks because two blocks slip in a way that affects each other. Transform fault is a type of strike-slip fault that occurs when the two blocks slip in a horizontal manner alongside each other. hen earthquakes occur around transform faults, the depth is not very deep rather the earthquakes will occur at shallow depth.

Epicenters of earthquakes usually occur close to the surface of the earth. Therefore, the epicenter of a transform fault would occur on the earth's surface directly above the initial rock slippage.        

The most common form of cervical cancer is a squamous cell carcinoma, arising from the epithelial cells lining the opening into the uterus is True because Squamous cell carcinoma is the most common form of cervical cancer, accounting for about 80-90 percent of all cases.

This type of cancer develops from the squamous cells which line the outer part of the cervix. It is believed that this type of cancer is caused by long term infection with certain types of HPV (human papillomavirus). Symptoms of cervical cancer may include abnormal vaginal bleeding, pelvic pain or pain during intercourse.

In the early stages, cervical cancer usually does not cause any symptoms and can only be detected through regular pap smears. However, if it is left untreated, the cancer can spread to other parts of the body such as the bladder, rectum, and lymph nodes.

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Answer:

volume (v)

Explanation:

it's placed on the y axis

Answer:

Hadean ("Hades-like") Era. This era began with the formation of the earth from dust and gas orbiting the Sun about 4.6 billion years ago. During this era the surface of the Earth was like popular visions about Hades: oceans of liquid rock, boiling sulfur, and impact craters everywhere, meanwhile, during, for example, the Cretaceous period, Earth's land assembled essentially into two continents, Laurasia in the north and Gondwana in the south. These were almost completely separated by the equatorial Tethys seaway, and the various segments of Laurasia and Gondwana had already started to rift apart, and there were oceans of seawater, teeming with life such as Mosasaurs and Ammonites. During the Cretaceous period, the land was hospitable and warm enough to support large numbers of lifeforms, including the dinosaurs.

Explanation:

The statement "Only DNA molecules contain the nitrogen base called uracil." is false because  only RNA molecules contain the nitrogen base called uracil.

Uracil is indeed a nitrogenous base, but it is not found in DNA molecules. Instead, uracil is one of the four nitrogenous bases found in RNA (ribonucleic acid). The other three bases in RNA are adenine, guanine, and cytosine. In DNA (deoxyribonucleic acid), thymine replaces uracil, forming base pairs with adenine.

RNA is a nucleic acid that plays various roles in the cell, including transferring genetic information from DNA to protein synthesis and acting as enzymes (ribozymes) in certain reactions. RNA molecules are single-stranded, while DNA molecules are double-stranded, forming a double helix structure.

The presence of uracil in RNA instead of thymine in DNA is a key difference between the two nucleic acids. The nitrogenous base composition determines the specific genetic code and the functionality of the nucleic acid molecule.

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NMDA receptor is a coincident detector; glycine is a co-factor; conducts sodium, potassium, and calcium; and is responsible for the late phase of EPSP.

Thus, the correct option is E.

The N-methyl-D-aspartate (NMDA) receptor is аn ion-chаnnel receptor found аt most excitаtory synаpses, where it responds to the neurotrаnsmitter glutаmаte, аnd therefore belongs to the fаmily of glutаmаte receptors. NMDA receptor plаys аn importаnt role in leаrning аnd memory, аnd аre criticаl for spаtiаl memory. These receptors аre tetrаmeric ion chаnnels composed of а fаmily of relаted subunits.

Since the opening of the NMDА receptor requires simultаneous аctivаtion by glutаmаte аnd depolаrizаtion to relieve the mаgnesium block, the NMDА receptor cаn аct аs а coincidence detector for pre- аnd postsynаptic аctivity.

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Answer:

A

Explanation:

because it is known as a large molecule

The starch molecule is known as a good source of energy for an organism because the multiple bonds in the starch molecule are responsible for the storage of energy. Thus, the correct option for this question is A.

A starch molecule may be defined as a type of molecule that significantly consists of a chain of glucose molecules that are bound together in order to construct a bigger molecule, which is called a polysaccharide.

There are two types of polysaccharides present in the molecules of starch. They are as follows:

These long chains of glucose store a tremendous amount of energy during the synthesis of the starch molecules. Glucose provides instant energy while the breakdown of bonds in starch molecules takes time. So, the energy is liberated accordingly with a long-lasting effect.

Therefore, the multiple bonds in the starch molecule are responsible for the storage of energy. Thus, the correct option for this question is A.

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Answer:

i think its nearby PLANTS

Explanation:

plz mark brainliest

Answer:

Roots

Explanation:

Plants love to feed their friends! Their roots have many jobs and one of those is finding out information, and where to eat. It will pass this information to its fellow plants, and if they are not feeling so well, the fellow plants nourish it.

A nucleus must have less rest energy than the nucleons it is formed of if protons and neutrons (also known as nucleons) are bound together in it.

The mass of the protons and neutrons that make up an atomic nucleus is always smaller than the nucleus' actual mass. Energy is released during the formation of a nucleus. The removal of this energy manifests as a decrease in total mass.

Protons and neutrons comprise atomic nuclei (or nucleons). A nucleus' total mass is lower than the sum of the masses of its nucleons. According to Einstein's mass-energy connection, E=mc2, the mass lost when a composite nucleus is produced from nucleons is converted into energy.

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