In the example, no RNA is made during the process. What would need to occur for lacZ to be expressed in mRNA

Explanation:

The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D). The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope.

The vomeronasal organ is situated in the top of a snake's mouth, and there are two little section openings that lead to it - like nostrils, yet within the mouth. When the snake has waved its forked tongue around to the point of getting a decent covering of synthetics, it brings the tongue once more into the mouth and presses the tips of its forks against the organ - one fork tip in each opening. This conveys a message to the snake's mind, telling it what the "smell" is. What's more, assuming the sign is more grounded on one tip of the tongue fork than the other, it lets the snake know which bearing that smell is coming from. This is the way winds can track down secret prey. To realize how snakes murmur,

Answer:

Grunting , color changes , sweating , wheezing and body position . ect.

Explanation: lmk if its wrong . but it should be right

Hint: You want to try and think about what you are reading to check if its 2 questions in the question.

Answer #1: The Savanna biome has had a lot of human impacts affect the environment and health of the Savanna. The African people use the Savanna land not just to live on but to graze their cattle and goats. The grasses get completely eaten and with no vegetation, the Savanna turns into a desert.

Answer #2: Humans have affected the savanna biome in many ways.  The increased use of the savanna by humans has caused degradation of this biome.  Extinction of animals in this biome is caused by humans releasing foreign species into the savanna.  Humans have killed predators, built dwellings, and cleared land to be able to farm.  Humans have done things like stopping natural fires and starting fires in this environment which kill many plants and animals if they get out of hand.

The reason for the clear zone may be that there is Insufficient lipolytic activity.

The absence of clear zones when using LB media with 1% olive oil for screening lipolytic bacteria could be due to Insufficient lipolytic activity.

Enzymes called lipases, which are produced by lipolytic bacteria, break down fats and oils. It's possible that the bacteria utilized in the experiment won't create lipases or have poor lipolytic activity, which would prevent them from efficiently hydrolyzing the olive oil in the media. There wouldn't be any observable clearing or lipid hydrolysis zones as a result.

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Answer: Potassium (K) and bromine (Br)

Explanation:

Table salt has the chemical formula of NaCl which is formed by the transsfer of electrons from sodium to chlorine.

As sodium (Na) has 1 valence electron and chlorine(Cl) has 7 valence electrons, one elecron is transferred from sodium (Na) to chlorine (Cl) to form an ionic bond between the two.

Similarly Potassium (K) with 1 valence electron and bromine (Br) with 7 valence electrons, transfer of electron takes place from potassium (K) to Bromine (Br) to form an ionic bond between the two resulting in the formation of salt potassium bromide (KBr).

Answer:

In dividing cells, most of the cell's growth occurs during interphase. 5. The mitotic spindle(s) is a cell structure consisting of microtubules, which forms during early mitosis and plays a role in cell division.

During interphase, DNA replication and cell expansion take place. During the mitotic phase, the cell divides and the DNA replication and cytoplasm are segregated.

The majority of a cell's time is spent in the phase known as interphase, during which it matures, copies its chromosomes, and prepares to divide. The cell then completes mitosis, leaves interphase, and divides to completion.

During the mitotic (M) phase, the cell splits into two new cells by dividing its cytoplasm and DNA into two sets.

Chromosomes will line up, split, and move into new daughter cells during mitosis. Interphase occurs between one mitotic (M) phase and the next because the prefix inter- signifies between.

Therefore, in dividing cells, most of the cell's growth occurs during interphase.

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Answer:

ex. where you are standing now

a perspective that one uses to determine if an object is moving.

Explanation:

in physics, a frame of reference, or reference frame, is a perspective that one uses to determine if an object is moving. ... For example, when you see a ball roll down a street, you can tell the ball is moving because the frame of reference is the streets, whatever may be on the side of the roads, or the Earth.

wikipedia

Answer:

Trophic level 1 - Primary producers

Explanation:

Biomass is basically energy, and the most energy lies in the primary producers.

Answer:

G1 is the longest phase of the cell cycle?

Explanation:

G1 takes about 10 hours of the total 24 hours of the cell cycle.

-TheUnknownScientist 72

Answer:

what is tardigrade? known colloquially as water bears or moss piglets, are a phylum of eight-legged segmented micro-animals.

Tardigrades pose no threat to humans. Scientists have yet to identify a species of tardigrade that spreads disease.

The population is not in hardy weinberg equilibrium, because it does not match the previous generation.

The frequency of individuals = individuals/total population

The frequency of Green individuals = 1092/1200

The frequency of Green individuals = 0.91

                                                       q² = 0.91

                                                    √ q² = √0.91

                                                         q = 0.953

By using the first Hardy-Weinberg equation:

                                                                p + q   = 1

                                                                p + 0.953 = 1

                                                                p   = 1 - 0.953

                                                                p    = 0.046

Therefore, the population does not match the previous generation.

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Answer:

b

Explanation:

Answer:

Checkpoints stop the cell cycle when errors are detected.

Explanation:

Answer: c. Part of an ecosystem

Explanation: the fish, crustaceans, molluscs and bacteria are part of a community, but sand is not. Each of those species is part of a population.

Answer:

I would say B and C

Explanation:

Like all ecosystems, all organisms depend on each-other. Living or non-living all animals depend on each-other.

Answer:

1) During Prophase I homologous chromosomes form *tetrads* consisting of *sister* chromatids.

2) *Crossing-over* is the process of *homologous* chromosomes exchanging segments.

3) Homologous chromosomes move to the middle of the cell during *Metaphase* of Meiosis.

4) *Genetic diversity* results from the random alignment of chromosomes during Metaphase I of Meiosis.

Explanation:

Both the flask with Elodea only and the flask with snail only are expected to have carbon dioxide after 12 hours.

Based on the information provided, it is likely that both the flask with Elodea only and the flask with snail only will have carbon dioxide after 12 hours. Here's the explanation:

Flask one had water only, so it does not have a living organism that can produce carbon dioxide through respiration or photosynthesis. Therefore, it is unlikely to have any detectable carbon dioxide after 12 hours.

Flask two had Elodea only, which is a plant. Plants undergo photosynthesis, a process in which they take in carbon dioxide from the environment and release oxygen.

In the absence of light (as indicated by being wrapped in foil and placed in the dark), photosynthesis does not occur, but respiration continues. During respiration, plants release carbon dioxide as a byproduct. Therefore, flask two with Elodea only is likely to have carbon dioxide after 12 hours.

Flask three had a snail only. Snails are living organisms that undergo respiration and produce carbon dioxide as a byproduct. Even in the dark, snails continue to respire and release carbon dioxide. Therefore, flask three with snail only is also likely to have carbon dioxide after 12 hours.

In conclusion, both the flask with Elodea only and the flask with snail only are expected to have carbon dioxide after 12 hours.

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If a  strain of cells undergoes a mutation that increases the permeability of the inner mitochondrial membrane to hydrogen ions and we assume the mutant cells can survive, then the metabolic requirements of these cells might differ from those of a non-mutant strain of the same variety in the sense to be able to generate more ATP per unit of time.

The role of the inner mitochondrial membrane is to allow the passage of hydrogen ions during the last stage of cellular respiration called oxidative phosphorylation, which is required to create ATP.

Therefore, with this data, we can see that the inner mitochondrial membrane allows the passing of hydrogen ions during cellular respiration in order to use this electrochemical gradient to generate ATP, the energy coin of the cell, thereby increasing its metabolic rate.

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Answer:   Geology is the study of the earth. Biology is the study of life. The two are inextricably interlinked. Recent work has shown that life formed extremely quickly on this planet and that since it formed it has shaped the environment in very profound ways. For example early life generated our oxygen rich atmosphere.

There are specific subdiciplines of geology that are heavily oriented towards biology. These include paleontology, paleobotany and paleoecology.

There are a number of rocks that are created predominantly by biological processes. Limestone is the principle example. Life also created our planet's coal and petroleum resources. These resources exist because life was so abundant that the environment's ability to 'eat' the surplus was outstripped.

||DONT USE IN EXACT WORDS...I ADVISE YOU NOT TO..PLAGARISM MAY BE DETECTED...YOU MAY LOOSE POINTS FOR THIS REASON.||

The percentage of monocytes is increased from the normal range. The normal range for monocytes is 2-8%, but Alexi's count is 21%. This suggests that his body is fighting an infection.

Monocytes are a type of white blood cell that helps to fight infections. They do this by engulfing and destroying bacteria and other foreign invaders.

In Alexi's case, the percentage of monocytes is still elevated, suggesting that the infection is still ongoing. The type of microorganism causing Alexi's infection is not known for sure, but it is likely to be a bacteria. Bacteria are the most common cause of infections, and they are typically more difficult to fight off than viruses.

Paolo would report that his throat is sore. This is a common symptom of a viral infection. The pain is caused by inflammation of the tissues in the throat. Two signs of inflammation that would be observed in Paolo's throat are redness and swelling.

In conclusion, Alexi's increased percentage of monocytes suggests that he has a bacterial infection that has been going on for some time. Paolo's sore throat, redness, swelling, and increased body temperature are all signs of a viral infection.

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Answer:

(Explanation is answer) Hope this helps. Brainliest pls

Explanation:

The innate immune response is the first mechanism for host defense found in all multicellular organisms. The innate immune system is more ancient than the acquired or adaptive immune response, and it has developed and evolved to protect the host from the surrounding environment in which a variety of toxins and infectious agents including bacteria, fungi, viruses and parasites are found (1).

The immune system is complex and is divided in two categories: i) the innate or nonspecific immunity, which consists of the activation and participation of preexistent mechanisms including the natural barriers (skin and mucosa) and secretions; and ii) the adaptive or specific immunity, which is targeted against a previously recognized specific microorganism or antigen. Thus, when a given pathogen is new to the host, it is initially recognized by the innate immune system and then the adaptive immune response is activated (2). Innate immunity is the host’s first line of defense and is intended to prevent infection and attack the invading pathogens.This nonspecific mechanism is fast (minutes to hours) while the adaptive response takes longer (days to weeks).

Innate immunity is comprised of different components including physical barriers (tight junctions in the skin, epithelial and mucous membrane surfaces, mucus itself); anatomical barriers; epithelial and phagocytic cell enzymes (i.e., lysozyme), phagocytes (i.e., neutrophils, monocytes, macrophages), inflammation-related serum proteins (e.g., complement, C-reactive protein, lectins such as mannose-binding lectin, and ficolins); surface and phagocyte granule antimicrobial peptides (e.g., defensins, cathelicidin, etc.); cell receptors that sense microorganisms and signal a defensive response (e.g., Toll-like receptors); and cells that release cytokines and inflammatory mediators (i.e., macrophages, mast cells, natural-killer cells). Once the interaction host-invader pathogen enters, a signaling cascade is initiated which enhances the immune response and activates specific mechanisms (3-5). This natural immune response is designed to: a) prevent infection, b) eliminate invader pathogens, and c) stimulate the acquired immune response.

The correct examples of physical, chemical, and biological barriers are coughing, saliva, and complement system respectively.

Barriers may be defined as something that blocks the free passage of any object, compound, or thing.

Coughing mediates the physical barrier that kills the pathogen and improves the body's immune system at the physical level. Saliva consists of an enzyme that kills the pathogens on body surfaces, so it is classified under a chemical barrier. Biological barriers involve the action of the complement system which performs the activity of lysis of pathogen particle and stimulate the body's immune response.

Therefore, the correct examples of physical, chemical, and biological barriers are coughing, saliva, and complement system respectively.

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A description of the compost bin that can be used for this experiment is that the bin is a rectangle-shaped container that is made of wood. This container is 150 cm wide and 30 cm deep. It can hold up decaying materials for up to one month.

The compost can be used to store decaying materials that will be used in a nearby farm for manure. Composting is the act of storing up decomposable materials that remain in a container until they are ready for use.

The compost so obtained can be used to improve the fertility of the soil where crops will be planted.

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Answer:

D. The Earth's atmosphere has remained the same for the past 200 million years.

Explanation:

Earth's atmosphere has changed over the time as oxygen levels have decreased significantly due to carbon emissions. This means this statement is false, since Earth's atmosphere has changed a good amount over the past 200 million years.

No.

Definition. Genotype frequency refers to the number of individuals with a given genotype divided by the total number of individuals in the population while allele frequency refers to the frequency of occurrence or proportions of different alleles of a particular gene in a given population.

source: pediaa

Answer:

Explanation:

Title: Observation of Liverworts (Hepatophyta)

Objective: To observe the living green "leafy" gametophyte stage of liverworts and compare them with moss.

Hypothesis: Liverworts and moss may share some similarities in structure, but there may be significant differences between them.

Observations:

Liverworts Structures:

Gametophyte: The main plant body of the liverwort, which is haploid (n) and produces gametes.

Sporophyte: A structure that grows from the gametophyte and produces spores. It is diploid (2n).

Rhizoides: Root-like structures that anchor the gametophyte to the substrate and absorb water and nutrients.

Leaf-like structures: Flattened structures that resemble leaves but do not have true veins or stomata.

Thallus: The entire plant body of the gametophyte, which lacks true stems or roots.

Observations of different structures in liverworts:

Sporophyte: Small and inconspicuous, growing from the gametophyte.

Gametophore: The stem-like structure that supports the gametophyte and sporophyte.

Rhizoides: Thread-like structures that attach the gametophyte to the substrate and absorb water and nutrients.

Thallus: The plant body of the gametophyte that lacks true stems or roots.

Comparison between liverworts and moss:

Similarities:

Both are non-vascular plants.

Both have a haploid (n) gametophyte and a diploid (2n) sporophyte stage.

Both reproduce by spores and require water for fertilization.

Differences:

Liverworts have leaf-like structures and a thallus, while mosses have true leaves and stems.

Liverwort sporophytes are small and inconspicuous, while moss sporophytes are tall and conspicuous.

Liverworts have rhizoides, while mosses have true roots.