Xylem is a type of specialized vascular plant tissue that moves water and other substances from the roots of the plant to its leaves and other organs.
Xylem is composed of tube-like structures that transport water, minerals, and other organic compounds. Xylem is found in both vascular and nonvascular plants, but it is the primary mechanism by which water moves within the plant in nonvascular plants.
Xylem consists of two types of cells: tracheids and vessel elements. Tracheids are long, slender cells that form the walls of the xylem. They are connected end-to-end, forming a continuous tube. Vessel elements are shorter, wider cells that are arranged in a ring, creating a tube-like structure. The walls of the vessel elements are perforated, allowing water and other substances to move freely through them.
Xylem is important for the health of the plant. It is responsible for providing the plant with the water and other substances it needs to stay alive. It also helps to transport nutrients and other essential materials, such as hormones and proteins, throughout the plant. Without xylem, plants would not be able to survive.
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What type of reaction is seen when hydrogen peroxide is added to a microbial colony of catalase-producing bacteria
What type of reaction is seen when hydrogen peroxide is added to a microbial colony of catalase-producing bacteria is the rapid formation of gas bubbles.
Catalase is an enzyme that catalyzes the reaction in which hydrogen peroxide is broken down into water and oxygen This enzyme is able to oxidize 1 molecule of hydrogen peroxide to oxygen. Then simultaneously it can also reduce the second hydrogen peroxide molecule to water
Hydrogen peroxide is one of the breakdown products of every cell that uses oxygen as an energy source in metabolic processes. When hydrogen peroxide is added to microbial colonies it inhibits the growth of one bacterial species by another. Because this compound is added to catalase-producing bacteria, the catalase enzyme neutralizes the bactericidal effect by breaking the compound into water and oxygen or gas bubbles.
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What determines a cat's fur pattern?
A cat's color pattern is partly determined by a gene called DKK4.
Domestic Cats All cats have some sort of tabby in their genetics. The A gene is involved in cat patterns. A, or agouti, dominant, produces ticks or bands of color in the hair.
There are 6 types of cat hair patterns. These are tabby, solid, bicolor, tricolor, tortoiseshell and colorpoint. These different markings are attributed to cat genetics, and the results can be surprising.All domestic cats, even plain ones, have an underlying genetic pattern of tabby. Spots, Stripes, Spots:
A cat's fur color pattern resulting from an important gene.
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if a cell that contains 20% NaCL is placed in a solution with a concentration of 70% water, what will likely happen to the cell It will shrivel, It will swell, It will stay the same
If a cell that contains 20% NaCl is placed in a solution with a concentration of 70% water, what will likely happen to the cell is that it will shrivel because the solution is a hypertonic solution.
The correct option is A.
What are hypertonic, isotonic, and hypotonic solutions?A hypotonic solution is a solution that has a lower concentration of fluid, sugars, and salt than blood.
A hypertonic solution is a solution that has a higher concentration of fluid, sugars, and salt than blood.
An isotonic solution is a solution that has a similar concentration of fluid, sugars, and salt to blood.
Cells react differently when placed in hypertonic, isotonic, and hypotonic solutions.
When cells are placed in a hypertonic solution, they shrivel.
When cells are placed in a hypotonic solution, they swell.
When cells are placed in an isotonic solution, they stay the same.
A cell that contains 20% NaCl is placed in a solution with a concentration of 70% water is placed in a hypertonic solution.
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Which of the following parts of a plant remains on the plant even after several years of growth?
A) Primary xylem B) Primary phloem C) Epidermis D) Cortex
The basic xylem still seems to be present close to the pith even when the plant has grown for a considerable amount of time.
What is the term for a plant's longer growth?Because they permit primary growth, also known as height and height expansion, these three forms of rosette are referred to as primary meristems. With more meristems, broadleaf weeds have the potential to grow larger. Secondary growth does not occur in herbaceous plants.
What is the name of the sprout that lengthens stems and roots?Meristems affect primary, secondary, and tertiary growth. The medial meristems, also known as the vascular system, govern secondary growth whereas root organizational meristems that continue to shoot apical cell structures regulate primary growth.
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Select ALL of the correct answers. Which of the following statements is true of the body cells of an organism? A.) The body cells all perform the same functions as each other. B.) All body cells are descended from a single cell. C.) All body cells contain the same or similar genetic information. D.) The body cells can be different from each other.
Answer: I know C and D for sure...maybe B too? Not too sure
Explanation:
NEED ASAP!!!
explain how mutations affect genes.
Explanation:
Random mutations in genes can potentially lead to advantageous characteristics. For example, a mutation in the genetic coding of a bacterium could lead to that bacteria becoming resistant to antibiotics. Mutations change the overall coding of a gene, and are normally harmless. Mutations are changes in the coding of DNA, they can lead to alterations in the polypeptide chain and so can lead to non-functional proteins.
_____ produces most of the Earth’s oxygen
a) Land plants
b) Soil bacteria
c) Photosynthesizing algae
d) Bacteria in the intestines
20 points need an answer asap taking quiz ow !!!
Photosynthesizing algae produces most of the Earth’s oxygen.
What are Photosynthesizing algae?By converting light energy to chemical energy through the process of photosynthesis, carbon dioxide and water are transformed into organic molecules.
Nearly all algae engage in the process, and in fact, much of what is currently known about photosynthesis was first uncovered through research on the green alga Chlorella.
The enzyme ribulose bisphosphate carboxylase binds carbon dioxide to ribulose bisphosphate, a 5-carbon sugar with two linked phosphate groups, during the dark processes.
Photosynthesizing algae produces most of the Earth’s oxygen.
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Which of the following statements correctly describes a portion of the pine life cycle? a. Apollen tube slowly digests its way through the triploid endosperm. b. Seeds are produced in pollen-producing cones.
c. Pollen grains contain female gametophytes. d. Female gametophytes produce eggs.
pollen grains accurately summarizes a stage of the pine life cycle in which the apollen tube slowly helps in digestion its way through into the triploid endosperm.
Are male gametes present in pollen grains?Pollen grains are created by an anther and contain male gametes. In a procedure termed as fertilization, the male gamete and female gamete combine to create a zygote, which eventually develops into a new seed.
Are male gametes and pollen grains similar?So the pollen is a male gametophyte that is either immature or partially formed. Similar to this, a unicellular microspore generates male gametes and undergoes mitotic cell division to become a mature microgametophyte. As a result, the pollen grains contain immature and made significant contributions male gametophytes.
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What is Stage 2 of the Calvin cycle?
Reduction is Stage 2 of the Calvin cycle.
The 3-PGA molecules are changed into molecules of the three-carbon sugar glyceraldehyde-3-phosphate in the second phase by the utilisation of ATP and NADPH (G3P). The name of the stage comes from the three-carbon intermediate that NADPH lowers or donates electrons to in order to generate G3P.
Carbon dioxide and hydrogen carrier molecules are converted into glucose through a sequence of chemical reactions known as the Calvin cycle. It is also known as the photosynthetic carbon reduction cycle, the dark processes, the light-independent reactions, and the biosynthetic phase. Reduction. It relates to Calvin's cycle's second stage. 3-PGA molecules are changed into glucose molecules, which are simple sugar molecules, by carbon fixation. ATP and NADPH produced during the photosynthetic processes that depend on light power this step.
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What is the net production of ATP in cellular respiration?
In aerobic respiration, one glucose molecule results in a net ATP gain of 38 ATP.
For every oxidised glucose molecule, 38 ATP molecules can be created during cellular respiration. The oxidation of biological fuels in the presence of an inorganic electron acceptor, such as oxygen, during the process of cellular respiration results in considerable amounts of energy that are utilised to power the primary production of ATP.
Cellular respiration is the process through which chemical energy from food is transformed into adenosine triphosphate (ATP) in an organism's cells, followed by the expulsion of waste materials. Respiration occurs during catabolic reactions, which break large molecules down into smaller ones and release energy. Respiration is one of the primary methods through which a cell releases chemical energy to fuel cellular activity. The total reaction is composed of various biochemical steps.
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plasmid vectors often contain __________ genes that can be used to screen for recombinants.
Antibiotic resistance genes are frequently found in plasmid vectors and can be used to test for recombinants.
What may a plasmid accomplish during recombination?Plasmids have been utilized by researchers as tools for the replication, transfer, and alteration of genes. Since they have been utilized in research, these plasmids are referred to as vectors. Recombinant plasmids can be made by changing plasmid carriers to include DNA snippets or genes.
What shared elements are present in recombinant products?One that is employed most frequently is the lambda microorganism. Since the virus does not need to replicate in Escherichia coli, the core region of the beta genome could be removed with the aid of a suitable restriction enzyme and replaced with donor DNA inserts.
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Select the misplaced or dangling modifier.
The future of coral reefs concerns many marine biologists; as a source of diverse fish
species, our dependence upon coral reefs for food and for marine biodiversity cannot
be overstated.
The misplaced or dangling modifier in this sentence is "The future of coral reefs concerns many marine biologists."
What is a misplaced or dangling modifier?A phrase or clause that is not obviously or logically related to the word or words it modifies. Usually at the start of a sentence, fixed by rewriting it. A misplaced modifier is a word, phrase, or clause that is separated incorrectly from the word it modifies or describes.
A dangling modifier is usually attached to the incorrect subject or has no subject to modify at all. Dangling modifiers are generally corrected by introducing the subject immediately after the modifier or including it in the modifying phrase, in this case, "The future of coral reefs concerns many marine biologists" is placed after "as a source of diverse fish species."
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what enzyme can proof-read the dna molecule, minimizing the mistakes made during the process of dna replication?
DNA polymerase enzyme proofreads the DNA molecule to minimize errors during DNA replication.
DNA polymerase enzymes are the enzyme that carries out DNA replication. During this mechanism, a wide range of errors can occur. DNA polymerase read the nucleotide in the template strand and pairs it with the complimentary nucleotide, that is adenine to thymine and guanine to cytosine. But errors occur all the time during this pairing.
But DNA polymerase also carries out proofreading along with the formation of the strand. When an incorrect nucleotide is paired, the whole mechanism is arrested. DNA polymerase identifies the errors by detecting the variation in the 3' OH group. The strand formation is stopped, and the incorrect nucleotide is replaced by the correct one, only after that the process continues.
The errors during DNA replication are rectified either by Base excision repair or Nucleotide excision repair. These are carried out by DNA polymerase as well as DNA ligase enzymes
DNA replication and proofreading are undertaken by the same enzyme, DNA polymerase.
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blank is the study of how organisms interact with their environment?
FILL IN THE BLANK PLEAS HELP ME!!!!!!!!!!!!!!!!!!!!!
Answer: Ecology is the study of how organisms interact with their environment.
What are the 4 evidences that support the theory of evolution?
Four types of evidence for evolution are listed as follows:
1. The evolution of older species as seen in the fossil record.
2. the shared chemistry and anatomy of related biological species.
3. the geographical distribution of species that are linked.
4. the genetic alterations that have been observed in living things over many generations.
Organisms undergo gradual change over long periods of time by descent with modification. This transformation results from the organism's adaptation to its changing surroundings, climatic circumstances, style of life, etc. We can support the theory of evolution with some evidence. The following are the primary examples that bolster the theory: The structure of an organism has changed with time and is no longer the same as it was in the past, according to fossil evidence. According to evidence from embryology, different species that are descended from the same evolutionary ancestor share structural characteristics. In all earthly living organisms, the evolution of their basic chemical compositions and anatomical structures is fundamentally the same. No matter how complex the creature, whether they are tiny single-celled protozoa or incredibly complex organisms with billions of cells, they all begin as single cells and reproduce themselves by similar division methods (click this button to hear the term before it is pronounced). They all have a limited lifespan, get old, and die. Another cue concerning earlier evolutionary processes comes from the regional natural distribution of closely related species. It is clear that isolated, vast land masses and groups of islands commonly established their own distinct plant and animal species.
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TRUE/FALSE: Food webs are the best depictions of feeding relationships because they show many ways that plants and animals are connected.
Answer:
True
Explanation:
Food webs are the best depictions of feeding relationships because they show a single path for the flow of energy through an ecosystem.
How is fumigant different from pesticides ? Name one natural substance which can be used in place of fumigant
Fumigants are chemicals that are used to kill pests by releasing a gas that penetrates into areas where pests may be hiding. These chemicals are often used to control pests in large, enclosed spaces such as grain storage facilities or ships.
Pesticides, on the other hand, are chemicals that are used to control, repel, or kill pests. Pesticides can be applied in various forms, such as liquids, granules, or sprays, and can be used to control pests on crops, gardens, and other outdoor areas.
One natural substance that can be used in place of a fumigant is thyme. Thyme is a herb that contains a chemical called thymol, which has insecticidal properties. Thymol can be used to control a variety of pests, including mites, insects, and nematodes. It can be applied in various forms, such as a spray or a dust, and is considered to be less toxic and safer to use than synthetic fumigants.
_________ refers to a pea plant that is either homozygous dominant or homozygous recessive for a particular trait.
Answer:
A purebred.
Explanation:
A purebred is an animal or plant that carries two identical alleles for a particular gene or trait. This means that if the pea plant is homozygous dominant (has two of the same dominant alleles), or homozygous recessive (has two of the same recessive alleles), it is considered a purebred. A purebred always expresses only one form of the trait.
you will think/search about different cultural practices in other country/place based on the given element.
• BELIEFS
•AESTHETIC
•EDUCATION
• RELIGION
• MATERIAL CULTURE
EXAMPLE: BELIEFS - spitting is a way of saying hello of Maasai tribe in Kenya.
BELIEFS: In Japan, it is believed that folding 1000 paper cranes can grant a person a wish.
• AESTHETIC: In the Himba tribe of Namibia, women cover their skin with a mixture of butterfat and ochre to enhance their beauty and protect their skin from the sun.
• EDUCATION: In some parts of India, the Guru-shishya tradition is still practiced, where a student lives with and learns from a Guru (teacher) in a specific field, such as music or martial arts.
• RELIGION: In Bali, Indonesia, daily offerings and prayers are made to the gods and ancestors, often including small intricate woven baskets filled with rice, flowers, and other items.
• MATERIAL CULTURE: In the Inuit community of the Arctic, igloos were traditionally made as temporary shelters out of snow and ice blocks.
What is the cultural practices?Culture in the above sense refers to the shared beliefs, values, customs, behaviors, and artifacts that characterize a group or society. It encompasses various aspects of human society, including beliefs and traditions, language, religion, art and aesthetics, education, and material culture.
Culture can be defined as a way of life of a particular group of people and is passed down from generation to generation through socialization.
In the examples provided above, different cultural practices are discussed in relation to the given elements such as beliefs, aesthetic, education, religion and material culture. For example, the practice of folding 1000 paper cranes in Japan is a cultural belief that is passed down through generations.
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What axis is the Independent variable located?
Answer:
The independent variable belongs on the x-axis (horizontal line) of the graph and the dependent variable belongs on the y-axis (vertical line).
A mutation in the gene for plasmin that results in non-functional plasmin can cause: O thrombin to activate. O plasminogen to clot blood faster. O blood clots will not be dissolved. O no clotting will occur.
Blood clots may not dissolve due to plasmin gene mutations that produce inactive plasmin. Therefore, statement 3 is the chosen statement.
A zymogen that starts the fibrinolytic cascade is plasminogen. The plasminogen-to-plasmin conversion results in plasminogen activation. A proteolytic enzyme is a plasmin. It is a chemical that stimulates the breakdown of proteins made from an inert plasma precursor plasminogen. Blood clot fibrinolysis and the restoration of regular blood flow are the primary physiological functions of plasmin. In other words, it is a serine protease that dissolves fibrin blood clots. It is present in human serum.
Therefore, statement 3 is correct.
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Why is there white fluff in my sea monkey Tate
Are they all dead?
Answer:
If you notice white spots, almost like cotton balls, in the tank water, you should try to remove them as soon as possible. They are a type of bacteria that can kill your sea monkeys. Use a small spoon to get them out of the tank and dispose of them.
Answer: It depends..
Explanation:
The white fluff could either be bacteria like fungus OR it could be white algae. It also could be Debris from the sea monkey itself
Compared to the internal salinity of a fish in the ocean, the surrounding seawater would be considered:
The internal salinity of a fish in the ocean is much lower than that of the surrounding seawater. Generally, the internal salinity of a fish's body is about half to two-thirds of the surrounding seawater.
This is because a fish needs to maintain a balance between the salt and water concentrations inside their body in order to survive. The internal salinity of a fish must remain lower than the surrounding seawater in order for it to remain hydrated. This is done through a process called osmoregulation, whereby a fish is able to take in water while expelling salt.
The salinity of the surrounding seawater is determined by many factors, including the amount of dissolved salts, the temperature, and the amount of rainfall in the area. The salinity of the seawater can also be affected by ocean currents and the proximity to land masses.
Generally, the salinity of the ocean varies depending on the location and is typically between 3.5 and 4.5 parts per thousand. Therefore, when compared to the internal salinity of a fish in the ocean, the surrounding seawater would be considered much higher.
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A snowstorm was predicted in Chicago. Identify the possible upper air temperature, surface temperature, and air pressure of Chicago on that day. Normal atmospheric pressure is 29.9 inches of mercury
Answer: For a snowstorm to occur, warm air must rise above cold air. The pressure must also be below atmospheric pressure
Explanation: For a snowstorm to occur, warm air must rise above cold air. The pressure must also be below atmospheric pressure
Answer: For a snowstorm to occur, warm air must rise above cold air. The pressure must also be below atmospheric pressure
Which of the following statements is true?
Chlorophyll is contained in organelles called mitochondria.
Water is the energy source for plant photosynthesis.
A by-product of photosynthesis is carbon dioxide.
Roots have tiny root hairs that maximize the plant's ability to absorb water.
Answer: roots have tiny root hairs that maximize plants ability to absorb water
Your answer is in fact correct
7
How do carbon dioxide and oxygen move into and out of a mesophyll cell?
A active transport
B
diffusion
osmosis
D transpiration
Answer:
Diffusion
Explanation:
Diffusion is the net movement of particles
The diagram below shows the ways cells can release energy from food depending on if
oxygen is available.
Using the diagram below, respond to the following:
**Reference that Photosynthesis Summary sheet we first saw in lesson #1 to help
you with this!!
1. Which step(s) takes place if oxygen is available?
2. Which step(s) take place if oxygen is not available?
3. Do we make more ATP when the process is aerobic or anaerobic?
4. Which specific step of aerobic cellular respiration makes the most ATP?
Answer using complete sentences.
Glycolysis
Overview of Cellular Respiration
C6H12O6 +6026CO₂ + 6H₂O + ATP
Oxygen present
Oxygen not present
Krebs cycle
Electron transport chain
Lactic acid fermentation
Alcohol fermentation
1
+10
When oxygen is available, the Krebs cycle will run, and in the absence of oxygen, fermentation will run, and the most ATP will form in the ETC, and the majority of the ATP is derived from aerobic respiration.
What is the role of aerobic respiration?The role of aerobic respiration is to produce most of the ATPs by using oxygen, and then, in the electron transport chain, the maximum amount of ATP is generated, whereas fermentation happens in less oxygenic conditions.
Hence, when oxygen is available, the Krebs cycle will run, and in the absence of oxygen, fermentation will run, and the most ATP will form in the ETC, and the majority of the ATP is derived from aerobic respiration.
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Which of the following glands can be observed on the ventral surface of the sheep brain? View Available Hint(s) O Pineal gland O Olfactory bulb O Pituitary gland O Mammillary body
The ventral surface of the sheep brain contains several important glands, such as the pineal gland, the olfactory bulb, the pituitary gland, and the mammillary body.
The pineal gland, also known as the epiphysis cerebri, is a small endocrine gland that is located in the diencephalon, the middle part of the brain. The pineal gland produces the hormone melatonin, which helps to regulate the body's circadian rhythm, or internal clock. Melatonin helps to regulate the sleep-wake cycle, and its production is influenced by the amount of light that the body is exposed to.
The olfactory bulb, also known as the bulbus olfactorius, is a small structure located in the forebrain, the front part of the brain. The olfactory bulb is responsible for the sense of smell, and it receives input from the olfactory receptors located in the nose. The olfactory bulb is a key part of the olfactory system, which is responsible for detecting and identifying odors.
The pituitary gland, also known as the hypophysis, is a small endocrine gland that is located at the base of the brain, near the hypothalamus. The pituitary gland is considered the "master gland" of the body because it produces several hormones that regulate the activity of other endocrine glands, such as the thyroid and the adrenal glands.
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what organelle is the colored green and located on the outside of the plant cell?
Answer: Chloroplast
Explanation:
The mucosa secretes ________________________________________ that chemically digests food. After food is mixed with these secretions it is called ________________________________________.
Mucosa secretes hydrochloric acid which chemically digests food. Once food is mixed with this secretion it is called chyme.
Chemical digestion is the process of changing the molecules of organic matter present in food from complex forms to simple forms with the help of enzymes.
Mucosa is a tissue that lines all cavities in our body such as the tongue and digestive tract. In the digestive tract there is tissue that lines the surface of the stomach so that the stomach wall is protected from gastric acid abrasion. Mucosa will secrete hydrochloric acid which will activate pepsinogen to become pepsin to digest food chemically, namely to break down proteins into proteoses and peptones.
Chyme is food that has been stirred and mixed with stomach acid sap and has become mush after peristaltic events. Peristalsis occurs when the wall of the stomach consisting of three layers of muscles contracts and causes a movement that stirs and mixes food with gastric juice.
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