Answer:
Survive is the correct answer
Explanation:
Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others. Individuals with adaptive traits—traits that give them some advantage—are more likely to survive and reproduce. These individuals then pass the adaptive traits on to their offspring. Over time, these advantageous traits become more common in the population
Saudi Arabia obtain the majority of its drinking water through gulf
streams
True or False
Answer:
True
Explanation:
hope it helps
Ciliated cells have tiny hairs on them that are called
Ciliated cells have tiny hairs on them that are called cilia. These cilia are hair-like structures that extend from the surface of the cell and are capable of rhythmic movements. The movement of cilia is important in various biological processes such as the movement of mucus in the respiratory tract, the movement of eggs in the female reproductive system, and the movement of sperm in the male reproductive system.
Answer:
Cilia
Explanation:
What are the four modern-day phyla of gymnosperms?
Answer:
Gymnosperms consist of four main phyla: the Coniferophyta, Cycadophyta, Gingkophyta and Gnetophyta.
Conifers are the dominant plant of the gymnosperms, having needle-like leaves and living in areas where the weather is cold and dry.
Cycads live in warm climates, have large, compound leaves, and are unusual in that they are pollinated by beetles rather than wind.
Gingko biloba is the only remaining species of the Gingkophyta and is usually resistant to pollution.
Gnetophytes are the gymnosperms believed to be most closely related to the angiosperms because of the presence of vessel elements within their stems.
Read the questions CAREFULLY
The source to sink active transport by plants includes:
Leaves (source) ---> Roots (sink)Leaves (source) ---> Fruits (sink)What is active transport?Active transport is the movement or transport of molecules by living organisms against their concentration with the expenditure of energy in the form of ATP.
Active transport is used to transport organic compounds into sieve tubes. This process involves transporting organic compounds such as sugars from the source cell into the companion cell, and then from the companion cell into the sieve tube.
A simplified model of this process is as follows:
Source cell → Companion cell → Sieve tube
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Prescription number
Prescription #1
Prescription #2
Prescription #3
mLs needed of soda mLs needed of solution
The volume of soda solution needed to create 65 ml of 60% soda/syrup prescription is 48.75 ml of the 80% soda solution.
What volume of soda in mL is required to prepare the final solution?The volume of soda solution needed is determined using the dilution formula:
V₁C₁ = V₂C₂
where
V₁is the volume of the 80% soda solution,
C₁ is its concentration (80%),
V₂ is the final volume of the 60% soda/syrup prescription (65 ml), and
C₂ is the concentration of the final solution (60%).
Substituting the give values and solving for V₁:
V₁ = V₂C₂/C₁
V₁ = (65 ml x 60%) / 80%
V₁ = 48.75 ml
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Complete question:
According to the eScience Lab Manual for Lab 1, Experiment 3, you need to prepare 65 ml of 60% soda/syrup prescription. To do this you can use the 80% soda solution and the syrup solution (0% strength) that you have in inventory. How many mls of soda solution do you need to create this final solution?
The image below shows villi within a fold in the lining of the small intestine.
An illustration depicts a series of villi in a fold in the lining of the intestine.
What is the function of folds and villi?
A.
trapping food particles that flow through the small intestines
B.
increasing surface area to improve nutrient absorption between the digestive and circulatory systems
C.
allowing particles in the small intestines to flow from the jejunum to the ileum
D.
expanding volume to increase gas exchange from the respiratory system to the digestive system
The small intestine is the largest part of the digestive tube. Its walls are folded and covered by villi, which increase the absorption area. B. increasing surface area to improve nutrient absorption between the digestive and circulatory systems.
What is the small intestine?
The digestive tube is approximately eleven meters long, from the mouth to the anus.
The small intestine is the longest organ of the digestive tube and contains several folds.
Its first portion, the duodene, receives secretions from intestinal glands, such as bile and pancreatic juices, and mixes them with the digestive juices of its production. All these secretions carry large amounts of enzymes that will degrade food and transform it into soluble substances, such as amino acids.
The reason for being so long is that this is the portion of the tube where nutrient absorption occurs. The intestine walls are covered by villi that increase the absorption area. It also transports water from the blood to the intestinal tract, which helps in food decomposition.
The correct option is B. increasing surface area to improve nutrient absorption between the digestive and circulatory systems.
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Answer:
The correct answer is B
I did the test
Which of the following is a benefit of renewable energy?
O It is unlimited or quickly replenished.
OIt costs less to use than fossil fuels.
OIt is from clean energy sources.
OIt uses man-made resources.
Answer: it is unlimited or quickly replenished
how dna determine traits
DNA determines traits by encoding the instructions for the production of proteins, which carry out various functions in the body and contribute to an organism's characteristics.
How does DNA determine traits?DNA contains the genetic instructions that determine an organism's traits.
The sequence of nucleotides in DNA determines the sequence of amino acids in a protein, which in turn determines its shape, function, and ultimately its contribution to an organism's traits. The precise sequence of nucleotides in DNA is critical, as even small changes can have significant effects on the resulting protein and its function.
The amino acid sequence from the given DNA sequences is as follows:
DNA: CAT AGG GAG CAA GGG TGA CTT TTT AAT AAT GAC GGG
mRNA: GUA UCC CUC GUU CCC ACU UUA AAU AAU CUG CCC
amino acids: Valine - Serine - Leucine - Valine - Proline - Leucine
DNA: CAC CGT CGA GTA GTA AGA GGG CAT TTG TAA GGA GGG GGG TGT
mRNA: GUG CGA CGU CAU CAU UCU CCC CUA CCU CCC CAC
amino acids: Valine - Arginine - Arginine - Histidine - Histidine - Serine - Proline - Histidine
DNA: CAA TTG TTA CGG AAA AGA CCC GCC ATA ACA TTT
mRNA: GCU AAC AAU GCC UUU UCU GGG CGG UAU UGU AAA
amino acids: Alanine - Asparagine - Asparagine - Alanine - Phenylalanine - Glycine - Arginine - Tyrosine - Lysine
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Body systems often work together to achieve a goal. For example, several body systems are involved when the body engages in
what is known as the "fight-or-flight" response to possible danger. The diagram shows the body system involved in this response
Which statements describe how systems interact to produce the fight-or-flight response?
Select the two correct answers.
The following statements describe how systems interact to produce the fight-or-flight response:
The nervous system detects a potential threat and triggers the release of hormones from the endocrine system, specifically adrenaline and cortisol.What is the Body systems?Others are:
The hormones released by the endocrine system stimulate the sympathetic nervous system, which increases heart rate, breathing rate, and blood pressure, preparing the body for action.The respiratory system increases breathing rate to provide the body with more oxygen.The cardiovascular system increases blood flow to the muscles, providing them with the energy they need to take action.The digestive system slows down or shuts down to conserve energy that is needed for the fight-or-flight response.Lastly, The sensory system, such as the eyes and ears, also play a role in detecting and responding to the threat.
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Determine the speed of the cyclist between 10 and 12 hours.
Based on the information provided in the graph, the speed between 10 and 12 hours was one kilometer per hour.
How to calculate the speed?To calculate speed using time and distance, you can use the following formula:
Speed = Distance / Time
Here's how to use this formula:
Determine the distance traveled. This can be measured in meters, kilometers, miles, or any other unit of distance.Determine the time taken to travel the distance. This can be measured in seconds, minutes, hours, or any other unit of time.Divide the distance by the time to get the speed. Make sure the units for distance and time match.Speed= 2 km / 2 hr = 1 km/hr
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Explain what you think makes school enjoyable
Answer:
As an AI language model, I don't have personal feelings or emotions. However, based on what I have learned from people, there are several factors that can make school enjoyable:
1. Engaging and inspiring teachers: Teachers who are passionate about their subject and who can make the material interesting and relevant to students can create a positive and enjoyable learning environment.
2. Supportive and inclusive community: Schools that foster a supportive and inclusive community where students feel accepted and valued can create a positive and enjoyable social environment.
3. Variety and flexibility in curriculum: Schools that offer a diverse range of courses and extracurricular activities that cater to the interests and abilities of students can create an enjoyable and enriching learning experience.
4. Opportunities for creativity and self-expression: Schools that encourage creativity and self-expression through art, music, drama, writing, and other forms of expression can help students find joy and fulfillment in their learning.
5. Positive reinforcement and recognition: Schools that recognize and celebrate the achievements and efforts of students can create a positive and enjoyable learning environment that encourages students to continue learning and growing.
Answer:
Facilitating an enjoyable educational experience is crucial for students, as it can foster a lifelong passion for learning. There are several strategies educators can utilize to promote student engagement and enjoyment.
One approach involves integrating diversity and innovation into lesson plans, providing students with the opportunity to personalize assignments and projects under teacher supervision. Another effective technique is to relate educational material to real-world situations, engaging students across multiple intelligences and empowering them to select their preferred learning methods and assessment strategies. Encouraging physical activity and experiential learning, while educating students on the significance of healthy habits and organization, is another powerful tool to promote student engagement.
Finally, creating a welcoming and secure learning environment where students feel free to express themselves is paramount to success. Ultimately, by creating a pleasant learning environment, students are more likely to remain engaged and enthusiastic about education.
7: If the actual length of a chloroplast is 10 um what is the magnification?
Can u solve 6 and 7
The magnification of the of a chloroplast is 500x.
How to calculate magnification?For question 7, use the formula for magnification:
Magnification = Image size / Actual size
Given the actual length of the chloroplast is 10 μm, rearrange the formula to solve for image size:
Image size = Magnification x Actual size
Image size = Magnification x 10 μm
Let's assume the image size is in micrometers as well.
If the magnification is 500x, then:
Image size = 500 x 10 μm = 5000 μm
Therefore, the magnification for a chloroplast with an actual length of 10 μm at an image size of 5000 μm is 500x.
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Image transcribed:
6) Look at the picture below and work out the actual size of a plant cell. The magnification used was x40.
7) If the actual length of a chloroplast is 10μm, what is the magnification?
is this correct? pleasee i need help fast
Using the information from the reading, create a biomass diagram using lions/buffaloes/grasses what do you think it would look like based on what you know about the 10% rule?
Answer: It depends on the reading, but it should show the grass with the most energy, the buffalo with 90% less energy than the grass, and the lions with 90% less energy than the buffalo
Explanation: The ten percent rule states that, when energy is transferred from one organism to another, only 10% of the energy is conserved. The other 90% is lost as heat. So, heterotrophs (organisms that produce their own energy) like the grass would have the most energy, the buffalo would only receive 10% of that, and the lions only 10% of the buffalos' energy.
the function of the caecum is to _/_ _ wastes
The function of the caecum is to absorb salts and electrolytes and lubricate the solid waste that passes into the large intestine.
The cecum's primary roles are to mix its contents with mucus, a lubricant, and to absorb fluids and salts that are left behind after intestine digestion and absorption are complete. A thick mucous membrane makes up the inside wall of the cecum, through which salts and water are absorbed.
In herbivores, the cecum is a food storage area where bacteria may degrade cellulose. The human cecum no longer serves this purpose (see appendix), therefore in people it only serves as a dead-end pouch that is a portion of the big intestine.
The last part of the body to process food is the large intestine, which receives the undigestible components from the small intestine, absorbs water from it, and excretes the waste material known as feces. The rectum and the anus are the organs that the body uses to release feces.
Therefore, the function of the caecum is to lubricate the wastes.
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If you think of a cell as a factory that makes proteins and ships them out, which function would vesicles perform?
Answer:
Vesicles would be the package (box,sack,polybag,etc) within which to put your proteins
Democratic structures
Answer:
Democratic structures refer to the systems and institutions that are designed to support democracy and promote democratic principles, such as transparency, accountability, and citizen participation1. These structures can exist at various levels of government, from national to local, and provide citizens with different ways to participate in the democratic process.
In a representative democracy, citizens elect representatives to make decisions on their behalf. These representatives are held accountable to the citizens through regular elections and other mechanisms of democratic accountability. Examples of democratic structures in a representative democracy include legislative bodies, such as parliaments or congresses, and executive bodies, such as presidents or prime ministers.
There are many different types of democratic structures and systems, each with its own unique features and characteristics. The specific democratic structures that exist in a given country or community depend on its history, culture, and political traditions.
Explanation:
During photosynthesis, pigment molecules in chloroplasts must absorb eight photons (four by each photosystem) for every O2 molecule they produce, according to the equation 2H2O+NADP++8photons⟶2NADPH+2H++O2 The standard free‑energy change ( Δ′° ) for the light‑independent production of O2 is 400 kJ/mol. Assuming that these photons have a wavelength of 700 nm (red) and that the light absorption and use of light energy are 100% efficient, calculate the standard free‑energy change for the process.
The standard free-energy change for the photosynthesis reaction is -184 kJ/mol.
Since the reaction involves the production of O₂ and NADPH, we can write the equilibrium constant (K) as:
K = [NADPH]² × [O₂] ÷ [H2O]² × [NADP⁺]
Given that Δ′° = -400 kJ/mol, we can calculate the value of K using the relation:
ΔG° = -RT ln(K)
ΔG° = -400 kJ/mol
Assuming the temperature to be 25°C (298 K), and the gas constant R to be 8.314 J/mol K, we get:
ln(K) = ΔG° ÷ (-RT)
ln(K) = 400,000 J/mol ÷ (-8.314 J/mol K × 298 K)
ln(K) = -51.2
[tex]K = e^{-51.2}[/tex]
K = 3.3 x 10⁻²³
Now, we need to calculate the energy (E) of each photon using the relation:
E = hc ÷ λ
where h is Planck's constant, c is the speed of light, and λ is the wavelength of the photons.
E = (6.626 x 10⁻³⁴ J s x 2.998 x 10⁸ m/s) ÷ (700 x 10⁻⁹ m)
E = 2.84 x 10⁻¹⁹ J
Since 8 photons are required to produce one O₂ molecule, the energy required to produce one O₂ molecule is:
8 x 2.84 x 10⁻¹⁹ J = 2.27 x 10⁻¹⁸ J
To calculate the free-energy change (ΔG) for the process of photosynthesis using the relation:
ΔG = -nFE, where n is the number of electrons transferred, F is Faraday's constant, and E is the potential difference.
In this case, two electrons are transferred to produce one O₂ molecule and two NADPH molecules, and the potential difference (E) is 0.95 V
ΔG = -2 x (96,485 C/mol) x (0.95 J/C)
ΔG = -184,000 J/mol
ΔG = -184 kJ/mol
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please help i need the answers within 10 mins!
Answer:
You need to make this more understandable
Explanation:
can someone help with this please? there was a video attached to this.. (it’s not that long at all but i’ll out the link in the comments incase anyone may need it) you also have to look at the previous question i posted yesterday to answer/understand this someone answered it already btw but just look at what they said and look at this
Maintaining a balance between the populations of kelp, otters, and urchins is important for the health and sustainability of the kelp forest ecosystem.
What is the carrying capacity of the kelp forest ecosystem?In a kelp forest ecosystem, kelp, otters, and urchins have a complex relationship. Kelp is the primary producer in the ecosystem and provides habitat and food for many organisms.
Otters are the primary predator of sea urchins, which are herbivores that feed on kelp. When otters are present in the ecosystem, they control the urchin population, allowing kelp to thrive. However, when otter populations decline, the urchin population can increase and overgraze the kelp, leading to a decrease in kelp abundance.
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Please help :(
I’m not sure
Answer:
Porque los niños no van a las escuelas
de Puerto Rico.
Please helpppppppppppppp
Why does a frameshift mutation usually cause more defects during protein
synthesis than a point mutation?
A. Frameshift mutations affect the whole chromosome.
B. Frameshift mutations only occur during translation.
C. Frameshift mutations can affect many amino acids.
D. Frameshift mutations are silent mutations.
Answer: C
Explanation: Because an insertion or deletion results in a frame-shift that changes the reading of subsequent codons and, therefore, alters the entire amino acid sequence that follows the mutation, insertions and deletions are usually more harmful than a substitution in which only a single amino acid is altered.
If two cows mate and create an offspring, which of the following distinguishes the offspring’s genetics?
Responses
The offspring will combine characteristics of both its mother and its father.
The offspring will be genetically identical to only its father.
The offspring will be genetically unique and have no traits of its parents.
The offspring will be genetically identical to only its mother.
A group of students did a biotechnology experiment with fermented coconut water and certain micro-organism, so the product produced several characteristics: Fluffy and a little bit taste sour, based on the data can be concluded that the micro-organism is
A. Acetobacter xylinum that changes glucose to cellulose and excess acetic acid
B. Lactobacillus bulgaricus that change glucose to cellulose and excess lactic acid
C. Neurospora sitophila that change protein to citric acid
D. Saccharomyces cerevisiae that changes starch to alcohol and CO
It can be concluded that the micro-organism is Acetobacter xylinum that changes glucose to cellulose and excess acetic acid. Option A
What is Acetobacter xylinum?From the experiment with fermented coconut water and a micro-organism, it could be deduced that the the fluffiness and soar taste are characteristics of the micro-organism involved called Acetobacter xylinum.
Acetobacter xylinum is a species of acetic acid bacteria that is known for its ability to convert glucose into cellulose and acetic acid. This produces a gel-like fluffiness.
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What do all signals that are used to communicate have in common?
Maggie places cells of Elodea, a freshwater plant, on a wet-mount microscope slide. She uses a saltwater solution to prepare the slide. When she observes the cells under the microscope, what is she most likely to see?
A.
The cell walls have dissolved, releasing the cell.
B.
The cells have remained unchanged.
C.
The cells will swollen, expanding the cell walls.
D.
The cells have shrunk within the cell walls.
When Maggie places the cells under the microscope, she is most likely to see D. The cells have shrunk within the cell walls.
Why would the cells have shrunken ?If Maggie places cells of Elodea, a freshwater plant, on a wet-mount microscope slide, and then uses a saltwater solution to prepare the slide, she is most likely to see the cells have shrunk within the cell walls when she observes them under the microscope.
When cells are placed in a hypertonic solution (such as saltwater), water moves out of the cells by osmosis, resulting in the cells losing water and shrinking. In the case of Elodea cells, the cells will shrink within the cell walls.
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since the new strand made of short segments of RNA nucleotides, has a free 3'end what can attach and add nucleotides
DNA polymerase can attach and add nucleotides to the free 3' end of a new RNA strand made of short segments of RNA nucleotides during DNA replication.
RNA primase first adds a short RNA primer to the 3' end of the template strand, which serves as a starting point for DNA polymerase to attach and add nucleotides in a 5' to 3' direction. DNA polymerase can only add nucleotides to the free 3' end of the RNA primer or an existing DNA strand. Once the RNA primer is replaced with DNA nucleotides, the lagging strand can be joined to the leading strand through DNA ligase.
This process of DNA replication is semi-conservative, meaning that each new double-stranded DNA molecule is composed of one parent strand and one new daughter strand. This mechanism of DNA replication ensures the accurate transfer of genetic information from parent to daughter cells during cell division.
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what are
two positive and two negative effects of land use by humans.
Answer: Positive:
1. Keep humans alive
2. Adequate food
Negative:
1. pollution
2. over population
Explanation:
3. (A) Pollution is the contamination of air, water or earth by harmful substance. (B)
We should take care of our environment. (C) Among the types of pollution, the
one that has existed longer than any other is water pollution. (D) Its
consequences are readily seen when pollutants reach groundwater reservoirs.
(E) This creates serious health hazards to people drinking the water.
The
topic
The
supporting
detail
that
sentence
does
not
belong
is:
is:
The sentence that does not belong as a supporting detail for the topic sentence "Pollution is the contamination of air, water or earth by harmful substance" is sentence B: "We should take care of our environment." While it is a related idea and certainly a good practice, it does not provide any additional information about the topic of pollution or how it affects the environment and human health. The other sentences provide specific details about the types and consequences of pollution, and support the idea that pollution is a serious issue that requires attention and action.