what single characteristic of the selectively permeable membranes used in the laboratory determines the substances that can pass through them

Answer:

They are necessary to the lives of people, plants, animals, and all other organisms. Nutrients help break down food to give organisms energy. They are used in every process of an organism's body. Some of the processes are growth (building cells), repair (healing a wound), and maintaining life (breathing).

Explanation:

Answer:

Nutrients help break down food to give organisms energy. They are used in every process of an organism's body. Some of the processes are growth (building cells), repair (healing a wound), and maintaining life (breathing).

Answer:

A herbivore is an animal that eats only plants. The animal has special teeth that are normally flat used just for their adaptation to eating the plants.

Explanation:

the way I remember this is the word herb reminds me of a plant

The original DNA strand that codes for the amino acid sequence Methionine-Proline-Tyrosine-Glycine-Stop is TAC-GGA-ATA-CCA-ATC. This is the template strand of DNA, and its complementary strand would be used as the coding strand during transcription.

To find the original DNA strand from the given amino acid sequence, we need to use the genetic code, which relates each three-letter codon in mRNA to a specific amino acid.

The codon AUG codes for methionine and UAG, UAA, and UGA are stop codons that signal the end of translation. The codons for proline, tyrosine, and glycine are CCU, UAU, and GGU, respectively.

Given the amino acid sequence: Methionine-Proline-Tyrosine-Glycine-Stop, we can use the genetic code to determine the corresponding codons in mRNA:

Amino acid: Met Pro Tyr Gly Stop

Codon in mRNA: AUG CCU UAU GGU UAG

Since we know that each codon is made up of three nucleotides, we can use the mRNA codons to determine the original DNA sequence. To do this, we need to use the complementary base pairing rules: A pairs with T, and C pairs with G.

The mRNA codons are:

AUG CCU UAU GGU UAG

To find the DNA sequence, we replace each base in the mRNA codons with its complementary base:

AUG CCU UAU GGU UAG

TAC GGA ATA CCA ATC

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don´t cheat

Explanation:

t is likely that the most successful flock, Flock Y, was able to provide better nutrition and care for its birds, leading to better survival rates and higher reproductive success. As a result, the offspring of Flock Y would likely have a greater chance of surviving and reproducing themselves, leading to a larger second generation.

Conversely, Flock X was the least successful at feeding, which likely led to higher mortality rates and lower reproductive success. As a result, the offspring of Flock X would likely have a lower chance of surviving and reproducing, leading to a smaller second generation.

The author of the story below uses figurative language to reveal that the narrator feels unnoticed by Natalie (option D)

Figurative language deviates from the usual word order and meaning in order to convey a complex meaning, vivid writing, clarity, or an emotive comparison. By using a regular sentence, it refers to something without actually declaring it.

Figurative language, which is frequently used in both literature and everyday speech, is present in many phrases. Figurative language asks the reader or listener to consider the meaning of something (a "vehicle") in the context of other ideas, actions, or visuals (a "tenor").

Understanding figurative language is necessary to read the Management Discussion and Analysis (MD&A), where management may use a metaphor to clarify complex ideas or the direction the organization is taking.

The question is incomplete, it should be:

My sister Natalie wanted to grow up in seconds and not in years. I was left behind to catch up in real time. Only two years apart, I also felt decades away from her. Natalie wanted privacy, personal room, and mother’s pretty possessions at ten. I longed for her cuddles, which she only dispensed when she had upset me and was sorry. I loved my big sister with every ounce of my being though she felt weighed down by my displays of affection.

“When I was your age, your aunt Jen and I weren’t close,” our mother confessed. “Now, we can’t get enough of each other. Your grandparents are really old, and we share our worries and responsibilities, you know.”

I wasn’t ready to think about that—my beautiful mother being frail or my towering father using a cane. I suspected Natalie would be ahead in the care arrangements and that I would try to play catch-up. I wondered if I would always be just a shadow in Natalie’s life until the day I caught her sobbing in the hallway.

“You didn’t see anything,” Natalie said between sobs and rushed to her room, which she didn’t seal with a locked door.

Entering her neat room, which was a furniture catalog, was a privilege. The veneer of the green curtains added a layer of beauty to the windows. Except for crumbled tissues in the trashcan, nothing seemed unkempt. What had been bothering my perfect sister?

“What’s wrong?” I asked and sat on the edge of the bed to take up the smallest possible space. Then, I spotted a broken friendship bracelet by the night lamp. How could I have not noticed before? Carly hadn’t come over in months. Natalie wasn’t on the phone every free minute of Saturday and Sunday. I had been buried in books and band practice and failed to see my big sister’s loneliness. “Do you want to watch Zombie Cheer together? We don’t have to talk. We can just be…together.”

Natalie lunged at me to hold me tight and wailed until my hair was damp. I let her. Then, she dried her face with tissues and took me by the hand to the living room. Mother had already set up two big bowls of popcorn, which looked like heaps of comfort. Mother always knew everything.

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Answer:

precipitation would be the answer

Rusting of iron and cutting an onion are both examples of chemical changes.

Rusting of iron is a chemical change because it involves a reaction between iron, oxygen from the air, and water. The iron reacts with oxygen to form iron oxide, commonly known as rust. This process is irreversible, and the chemical composition of the iron is altered during rusting.

Cutting an onion is also a chemical change because it involves the disruption of the onion's cell structure and the release of enzymes. When you cut an onion, enzymes stored within the cells are released, reacting with certain compounds to produce sulfur compounds. These compounds are responsible for the pungent smell and the tears that occur when cutting an onion. The cutting process causes a chemical transformation in the onion's composition, making it a chemical change.

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Answer:

Pisces are known as amazingly imaginative, creative, empathetic, and kind, they can also be overly sentimental, impressionable, and closed off.

Explanation:

Hope this helps!

Answer:

C) An extra chromosome is added, causing mismatching of the chromosome pairs.

Explanation:

Mutation is any change, whether big or small, that occurs in the nucleotide sequence of a gene. Mutation can be of different types depending on how it occurs.

According to the question, frameshift mutation is a mutation that causes the normal reading frame of the nucleotide sequence to be altered. It is caused when an extra chromosome is added (insertion) or when one chromosome is removed (deletion). In either way, there will be a mismatch or alteration in the chromosome pair, hence affecting the reading of the nucleotide sequence.

In frameshift mutation, the insertion or deletion causes the

normal CODONS (triplet nucleotide) to be missing or incomplete, hence, disrupts the manner at which the reading takes place (reading frame). Note, frameshift mutation only occurs as a result of insertion or deletion of chromosomes/bases that are not multiples of three that can maintain the normal reading pattern/frame.

Answer:

Adaptations

Explanation:

Can be inherited through offspring from parents or an organism changes to adapt to an environment and stay alive in order to survive

The survival of the fittest is the quote given by Charles Darwin. The scientist explained the theory of evolution and how organisms transmit adaptable changes from one generation to another.

The correct answer is:

Option C. Adaptations

Adaptations are defined as the changes in the trait of an organism, which helps them to survive and reproduce more in the given surrounding. The evolution of organisms is influenced by environmental factors.

The adaptable changes are heritable, which help the respective generations of the organisms to survive and live longer. Example of adaptations is long necks of giraffe beaks of finches, and stream-lined body of aquatic animals.

Thus, the adaptations help the organism to live, survive, and reproduce more.

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Answer:

near mid ocewn ridges

Explanation:

i learn that b*ith in 6th grade

Answer: The youngest crust of the ocean floor can be found near the seafloor spreading centers or mid-ocean ridges.

Explanation: As the plates split apart, magma rises from below the Earth's surface to fill in the empty void. Hope this helps! :)

False statement is: A constitutively active mutant form of PKA in skeletal muscle would lead to an excess in the amount of glycogen available.

A constitutively active mutant form of PKA is that PKA which is always active. Usually PKA will be in an inactive form which gets activated by cAMP when adrenaline binds to the receptor. If PKA always active it will activate Glycogen phosphorylase enzyme which breaks down glucose hence if this type of mutant PKA is there then level of unphosphorylated glycogen phosphorylase will decrease since PKA activates it by phosphorylation, phosphorylated glycogen phosphorylase form will get increased, glucose level will be increased and glycogen level will be decreased.

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In this case, we can transfer the letters in the exercise to the ones in this punnet square.

The answer would be the one in red color (9/64)

Based on the data in the graph, pesticide use is higher in wheat farming since it is more commonly employed in farming and plants than in the cattle business.

In order to produce food and commodities that people can use and enjoy, agriculture broadly refers to all activities involved in cultivating crops and rearing animals. One aspect of agriculture, which also covers plant science and entails cultivating the soil and rearing livestock, is farming. Food overproduction, although ensuring food security, also disturbs global markets and seriously harms the environment by depleting soil and water resources.

These are industrial farming and subsistence farming. This kind of farming is done to provide for the farmer's family.

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Answer:

Create glucose

Explanation:

they go through photosynthesis and create glucose

The backbones of DNA and RNA are made of alternating sugars and phosphate groups. So the correct option is A.

Nucleic acids are macromolecules that will be formed by a column of phosphates and sugars, this will give support to the molecules. This type of union is quite stable since they are difficult to break and not any enzyme can break it. Nucleotides are made up of nitrogenous bases, a sugar, and a phosphate group. The phosphate will be a high energy bond.

Nucleic acids will carry information that will be hereditary and they will have the information to be able to produce proteins. These macromolecules will be stored mainly in the nucleus of the cell.

Therefore, we can confirm that the correct option is A. made of alternating sugars and phosphate groups.

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The leading cause of neonatal mortality in Ethiopia are C. Preterm,infection & asphyxia .

One of the main causes of newborn morbidity and mortality in Ethiopia is birth asphyxia. Birth asphyxia-induced death reveals a considerable lapse in ANC follow-up, fetal monitoring throughout labor, and the beginning of the newborn's resuscitation after birth.

According to the current study, asphyxia, infection, and prematurity are the main causes of late newborn fatalities, whereas asphyxia, prematurity, and asphyxia are the main causes of early neonatal deaths.

Therefore, option C is correct.

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Answer:

Please find the cell structure with their best descriptions below

Explanation:

1. Capsule: Capsules are one of the Glycocalyx that firmly attaches to the cell surface and helps the cell avoid phagocytosis.

2. Slime layer: Slime layer is the other Glycocalyx that is loosely attached to the cell surface and helps the cell prevent dessication.

3. Flagella: The flagella is a long whip-like cell structure found in bacteria and some protists and principally used for moving.

4. Conjugation pilus: Conjugation pilus is a cell structure in bacteria that is used to transfer DNA to another bacteria cell.

5. Fimbriae: Fimbriae is a short, bristle-like protein that project from cell surface and help cells attach to surfaces of other cells.

6. Cell wall: Cell wall is a cellular structure found in plant cell and bacteria cells, whose function is to protect cells from harsh conditions and helps maintain cell shape.

7. Cell membrane: The cell membrane controls passage of substances into and out of the cell.

8. Cytoplasm: The cytoplasm is a gelatinous material found inside the cell.

9. Inclusions: Inclusions are structures in cells that formed from the deposits of nutrients.

10. Endospores: Endospores are structures that protect bacterial genome in a dormant state under adverse environmental condition.

11. Ribosomes: Ribosomes are organelles in a cell that makes polypeptide (protein).

12. Mycolic acid: Mycolic acid is a waxy molecule (long fatty acid chain) that is found in some gram positive bacteria and associated with their cell wall.

13. Nucleoid: A nucleoid is a region in prokaryotic cell where chromosomal DNA and DNA-associated proteins are concentrated.

14. Pili: Pili is similar to the Fimbriae but longer and contain less numerous protein appendages than fimbriae used in attachment.

Answer:

The pollen grows a tube to the ovary.

Explanation:

After pollen grains land on the stigma, a pollen tube grows from the pollen grain, through the style, and into the ovary. Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules. Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule.

Answer:

The pollen grows a tube to the ovary.

Answer:

B. Light-dependent

Explanation:

In the light dependent reaction, NADPH and oxygen are the products.

PHOTOSYNTHESIS:

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Mangroves are coastal ecosystems that provide habitats, food, and protection for various species, supporting the food web.

The mangrove ecosystem is a unique and highly productive coastal habitat characterized by mangrove trees, which are specially adapted to survive in saline environments. Mangroves are typically found in tropical and subtropical regions along sheltered coastlines, estuaries, and intertidal zones.

Mangroves are vital in sustaining the ecosystem by providing various ecological services. One of their significant contributions is their role in the food web or food chain.

They serve as a critical nursery and feeding ground for a diverse range of marine species. The intricate network of roots, known as prop roots, provides habitat, protection, and feeding opportunities for numerous organisms, such as fish, crustaceans, mollusks, and birds.

The mangrove leaves and detritus that fall into the water serve as a source of organic matter and nutrients, fueling the base of the food web. Decomposers and detritivores break down the organic matter, which is then consumed by various organisms.

Small organisms, like zooplankton and small fish, feed on the decomposers and detritivores, becoming prey for larger predators such as fish, birds, and reptiles.

Furthermore, mangroves act as a buffer against coastal erosion and storm surges, protecting shorelines and adjacent habitats. They also contribute to water filtration, nutrient cycling, and carbon sequestration, and provide a habitat for numerous endangered and migratory species.

In summary, the mangrove ecosystem plays a crucial role in sustaining the food web or food chain by providing habitat, nursery areas, and food sources for a diverse array of organisms. Their presence supports the productivity and biodiversity of coastal ecosystems, making them an essential component of coastal environments worldwide.

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Answer:

Since they need to float, leaves on the surface of plants are flat. 6. The presence of air sacs enables them to float. Their roots are smaller so water can spread freely and directly into the leaves