.......................

Answer: A

Explanation:

The following structures labelled in the given diagram are:

A- Chloroplast

B- Stroma

C- Granum

D- thylakoid

A chloroplast is a type of membrane-bound organelle known as a plastid that conducts photosynthesis predominantly in plant and algal cells.

Chloroplasts provide energy through photosynthesis and oxygen-release mechanisms, which support plant growth and crop yield. As such, chloroplasts are responsible for the manufacture of active substances such as amino acids, phytohormones, nucleotides, vitamins, lipids, and secondary metabolites

Chloroplasts are oval-shaped and have two membranes: an outer membrane and an inner membrane. Between the outer and inner membrane is the intermembrane gap roughly 10-20 nm wide. The space within the inner membrane is the stroma, the dense fluid within the chloroplast.

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Answer:

1 prophase, 2 metaphase, 3 anaphase, and 4 telophase.

Explanation:

Answer:

1= prophase

2= metaphase

3= anaphase

4= telophase

Explanation:

(because yes) hope this helps!

Population growth refers to the increase in the number of individuals in a population over time. This growth rate is usually expressed as a percentage of the population size over a set period, such as a year. When the number of individuals in a population exceeds the carrying capacity of the ecosystem, population growth ceases to occur. Populations that stop growing (and therefore reach their carrying capacity) face various conditions that contribute to it. The examples of conditions that contribute to populations ceasing to grow and reaching their carrying capacity are:
1. Low alcohol levels in the growth media for yeast: This can limit the growth of yeast as they require a certain level of alcohol to thrive.
2. Elephant seals living on moderately-inhabited breeding beaches: Limited space and resources on these beaches can lead to competition and prevent the population from growing indefinitely.
3. Barnacles having little space to attach: Limited space for attachment can cause a restriction in barnacle population growth, as they require surfaces to attach and grow.
4. The sugar supply becoming depleted for yeast: Yeast relies on sugar as a food source for growth. If the sugar supply becomes depleted, it can halt the growth of the yeast population.
5. Low parasite levels in fish populations: Although this may not directly contribute to reaching carrying capacity, it is still an important factor that can affect population growth in fish populations, as parasites can limit the population growth by causing diseases or impacting reproduction rates.

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Explanation:

if the concentration of CO2 or O2 in the air surrounding a plant is significantly altered from normal atmospheric levels, it can have negative effects on the plant's growth and health.

If the concentration of CO2 is too high, it can cause a reduction in the stomatal conductance of plants, leading to a decrease in transpiration rates and water uptake, as well as changes in plant morphology and physiology. This can ultimately result in reduced growth and yield in some plant species.

On the other hand, if the concentration of O2 is too low, it can lead to reduced respiration rates and oxidative damage in plants, which can negatively impact plant growth and development.

Therefore, in terms of toxicity, it is not a matter of which gas is less toxic, but rather what the appropriate concentrations of these gases are for optimal plant growth and health. Generally, plants require a balanced concentration of CO2 and O2 in the air surrounding them for optimal growth and survival.

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Answer: A protoplanetary disk.

Explanation:

The first thing that was formed, is the Sun, where most of the mass collapsed by the gravitational force and formed the star in the center.

After that, the rest formed something called a "protoplanetary disk", which is a rotating disk (as the name implies) of dust and dense gas which rotates around a newly generated star (in this case, there are protoplanetary disks formed around other types of stars, like a T Tauri Star).

Now, this protoplanetary disk will evolve into a planetary system, (planets, asteroids, moons, etc)

Answer:

taste:  the receptors for taste called taste buds are situated  chiefly in the tongue but they are also located in the roof of the mouth and near the pharynx

Explanation:

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Designing an experiment to test a hypothesis about a stage in the formation or development of early life on Earth involves careful planning and execution. Scientists might begin by formulating a specific hypothesis, such as the role of hydrothermal vents in the origin of life.

In this case, the hypothesis might be that early life forms developed in hydrothermal vent environments due to the presence of essential chemical elements and energy sources. To test this hypothesis, scientists would first gather data from existing hydrothermal vent systems, analyzing the chemical composition and energy sources available, this would help them identify the essential building blocks required for early life to thrive in such an environment. Next, they would recreate a similar environment in a controlled laboratory setting, introducing simple organic molecules and monitoring any changes over time.

The experiment would aim to observe the formation of more complex molecules or structures, indicative of early life development, this could include the formation of protocells, simple self-replicating molecules, or other signs of biological activity. Scientists would meticulously document their findings, comparing them to their initial hypothesis to determine if it is supported or refuted by the results. Throughout the experiment, researchers would also be mindful of potential alternative explanations or confounding factors, ensuring the validity of their conclusions. So therefore by carefully designing and executing such an experiment, scientists can gain valuable insights into the formation and development of early life on Earth, refining our understanding of this critical stage in our planet's history.

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The evolutionary relationship between hair and feathers would be convergent evolution.

If the scientist is correct that the hair of mammals and the feathers of birds are analogous structures, it means that these structures share a similar function, but they evolved independently in each group. In this case, the evolutionary relationship between hair and feathers would be that they are the result of convergent evolution, where unrelated organisms develop similar traits due to similar environmental pressures or needs, rather than a shared common ancestor.

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Explanation:

Ciliate: Hairs along leaf margin forming a fringe. Floccose: Tufts of soft, woolly hairs.

Answer:

Ciliate

Explanation:

The correct answers from the drop-down menu. Short-lived climate pollutants (SLCPs) persist in the atmosphere for a few days to a few years, and they make the climate warmer and more unstable. Short-lived climate pollutants (SLCPs) are a group of greenhouse gases

The aerosols that stay in the atmosphere for a short period of time, varying from a few days to a few years, and contribute to global warming and climate change. Carbon dioxide (CO2), the most prevalent climate pollutant, stays in the atmosphere for a long time, contributing to global warming and climate change over the course of centuries. However, short-lived climate pollutants, such as methane, black carbon, and tropospheric ozone, can have a more immediate effect on climate change. They also contribute to the deterioration of air quality and public health.Short-lived climate pollutants (SLCPs) are a group of greenhouse gases and aerosols that have a relatively short lifespan in the atmosphere, ranging from a few days to a few years. They play a significant role in increasing global warming and contributing to climate change.

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The main transcript is processed by eukaryotes by splicing out introns and adding a 5 cap and 3 poly-A tail.

In eukaryotes, the original RNA transcript is converted into mRNA by a process called maturation.

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The primary function of the large intestine is to provide a site for reabsorption of water, electrolytes, and some vitamins. The large intestine is an organ that follows the small intestine, where it helps to convert the liquid contents into semi-solid feces as it absorbs water and electrolytes from the material passing through it.

During the process of digestion, the small intestine absorbs most of the nutrients and water, and the remaining material goes to the large intestine. The function of the large intestine is to reabsorb water, electrolytes, and some vitamins, and store and concentrate the fecal material before it is eliminated from the body.

The large intestine is made up of the colon, rectum, and anus. The colon is divided into four regions: the ascending colon, transverse colon, descending colon, and sigmoid colon. The cecum is the first section of the colon, where the appendix is attached.

The reabsorption of water and electrolytes occurs mainly in the colon. The colon absorbs 90% of the remaining water from the contents passing through it, which makes the fecal material more solid. The large intestine also absorbs electrolytes, such as sodium, potassium, and chloride.

Some vitamins are produced by bacteria that live in the colon, such as vitamin K, which is important for blood clotting. The large intestine also stores fecal material until it is eliminated from the body. In conclusion, the primary function of the large intestine is to provide a site for reabsorption of water, electrolytes, and some vitamins.

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Answer:  The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. The frequency of dark-coloured moths increased at that time, an example of industrial melanism.

Using dams as freshwater sources can damage existing habitats.

What is the Environmental Impact of dams?

Freshwater habitats are severely harmed by dams, which has an impact on both humans and the environment. Dams, canals, and diversions already stop the flow of 60% of the world's major rivers. Dams and the infrastructure they are associated with, including irrigation systems, are a major cause of the disappearance of numerous freshwater habitats and species.

Dams cut off rivers from their marshes and floodplains. Freshwater ecosystems may suffer catastrophic harm. They affect fish migration patterns and inundate riparian habitats such as waterfalls, rapids, riverbanks, and wetlands. Dams alter the diversity and productivity of species by impeding the natural flow of sediment to deltas, estuaries, flooded forests, wetlands, and inland seas. Water quality is impacted by dam activities as well. Retention of water and sediment has an impact on the capability of rivers to handle waste and the quality of the water (the ability to break down organic pollutants). This might result in the creation of harmful hydrogen sulfide gas, further lowering the quality of the water.

Hence, the answer is, D. Dams can damage existing habitats.

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Answer:

A cell's cytoskeleton

Explanation:

Each type of cell has its unique shape which's due to its cytoskeleton, an internal scaffold built of protein filaments.

Especially important are microtubules, dynamic filaments that constantly grow and shrink

Answer: Correct approach is required to be taken for conducting the research.

Explanation:

The scientific methodology involves the observation, experimentation, deduction of the conclusion. Moreover, similar studies in the same field also add up to the literature and change in the methodology for a particular discipline of study to understand the scientific phenomena better. The unanticipated problems may include the physical, psychological, and economic harm to the subjects.

But according to the given situation the crew might have not taken protection while conducting research in the shark surrounding. Shark is a carnivore and can cause massive harm to the navigators so precautions are required to be taken to protect themselves and conduct research.

Answer: geno- 25%BB 50%Bb 25%bb

Pheno: black, kermode(white)

Explanation: the top of the punnett square should have Bb and the side should have Bb.

Square one should be BB square two should be Bb square three should be Bb and square 4 should be bb * note* the percentages should add up to 100 and use percentages of 25

Answer: Each atom of the period table is in order of increasing atomic number.

Explanation: I hope this helps! :)

Answer:

the pod splits, the cherry's bright red attracts  animals to eat it and the last one is called a Bur

Explanation:

Answer:

digestive and circulatory

Answer:

en español por favor

Answer: No I read it on briticanna.com

Explanation:

Answer:

1.) Asexual and sexual

Untreated gonorrhea can lead to Infertility in women and can cause pelvic inflammatory disease. Pelvic Inflammatory Disease (PID) can result in scarring of the tubes, greater risk of pregnancy complications and infertility.

The presence of pups is the independent variable, and the frequency of sentinel behavior is the dependent variable. The presence or absence of pups is the independent variable because it is being manipulated or controlled by nature, not by the scientists.

Meerkats live in all parts of the Kalahari Desert in Botswana, in much of the Namib Desert in Namibia and south-western Angola and in South Africa.

Active and social animals, meerkats live in groups that can include as many as 30 individuals, although the average pack size is around ten to 15 individuals. Groups are called mobs, and each mob may consist of up to three families living together. Each family group consists of a breeding pair and their offspring.

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Microorganisms such as bacteria, protists, viruses, and fungi can have harmful or beneficial effects on the ecosystem.

An example of a microorganism with a positive role in the ecosystem health would be bacteria that can fix nitrogen in the soil for the plants to use, such as Rhizobium leguminosarum, which has a symbiosis with legumes.

Microorganisms that have a harmful effect on the ecosystem health would be those that cause diseases and harm other living beings, for example, viruses that affect plants, like the Tobacco mosaic virus, which infects plants from the Solanaceae family.

Answer:

through changes in the availability or activity of the "helper"

Explanation:

This process involves many "helper" proteins, which make sure the ribosome is correctly positioned. Translation can be regulated globally (for every mRNA in the cell) proteins.

The first step in tissue repair involves the inflammation of the tissue and concomitant response (Option a is correct).

The inflammatory immune response is a type of response of the immune systems aimed at isolating pahtogenic agents such as viruses and bacteria that otherwise might spread across the body.

In conclusion, the first step in tissue repair involves the inflammation of the tissue and concomitant response (Option a is correct).

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