Electron microscopes can reveal details

Explanation:

Fossil fuels are nonrenewable resources because the conditions for their formation no longer exist on Earth.

Answer:

Smog is air pollution that reduces visibility and can cause harm to people with breathing problems.

Explanation:

Answer:

independent: treat flavor

dependent: which treat the kitten eats first

control: beef flavored treat

Explanation:

In Rebecca's experiment, the independent variable is the type of treat, the dependent variable is the kitten's preference of treat, and the control includes factors such as the number of treats in each bowl and the timing of the experiment.

In this experiment, the independent variable is the type of treats given to the kitten, either chicken flavored or beef flavored. The dependent variable is the kitten's preference, determined by which bowl the kitten eats from first. The control could be factors like the number of treats in each bowl (which is kept constant at ten), the time of the experiment, the location of the bowls, etc, which are kept unchanged in the experiment to ensure that any change in the kitten's behavior can be attributed to the change in the variable being tested, not due to some extraneous factors.

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Answer:

2.04 moles of C atoms

Explanation:

The number of moles of C atoms can be calculated using Avogadro's number, which is approximately 6.02 x 10^23 atoms per mole.

To find the number of moles of C atoms in 1.23 x 10^24 atoms, we need to divide the number of atoms by Avogadro's number:1.23 x 10^24 atoms / 6.02 x 10^23 atoms/mole = 2.04 moles

Therefore, if you have 1.23 x 10^24 atoms of C, you would have 2.04 moles of C atoms.

Methionine (AUG)Amino acids can be abbreviated using the first three letters of their name.

Methionine can be abbreviated as Met.

The given RNA sequence is AUGUAACGAUGCGUCGUGGCAUCAUGCUGCGUCAGCGGCGAGUCUGACCCGUCUCUAACAGGACGGCCGGGCGUUGUCGUUGA.

We can use the codon chart to determine the amino acid sequence.

The codon chart is used to determine which amino acid is coded by a particular codon in a strand of DNA/RNA.A codon is a sequence of three nucleotides in DNA or RNA that encodes for a specific amino acid.

Each codon codes for a different amino acid.

For example, the codon AUG codes for the amino acid methionine.

To determine the amino acid sequence, we start reading the RNA strand from the start codon AUG and continue reading until we reach a stop codon (UGA, UAA, or UAG).

Then we write down the amino acid sequence for the codons we read, using the codon chart.

Here, the sequence starts with AUG, which codes for methionine.

After that, the next codon is UAA which is a stop codon, so we can stop.

The amino acid sequence is therefore Methionine. So, the answer would be Methionine (Met).

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Answer:

36 1/6

Explanation:

434÷12=36 1/6

population density is number of trees in one square meter

TSH controls hormone synthesis, ADH decreases urine, melatonin is involved in circadian rhythm, TH regulates metabolism, insulin is produced in the pancreas and Aldosterone regulates salt.

A hormone is a chemical messenger used by the body to play a specific function and thus maintain homeostatic balance.

Hormones are secreted by specialized cells such as insulin that is secreted by pancreatic islet cells in this organ (i.e., the pancreas).

In conclusion, the function of TSH is to control hormone synthesis in the thyroid, ADH decreases the amount of urine, melatonin is involved in circadian rhythm, TH is a thyroid hormone that regulates metabolism, insulin is produced in the pancreas and Aldosterone regulates salt amount.

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Answer:

According to the ICSM (Intergovernmental Committee on Surveying and Mapping), there are five different types of maps: General Reference, Topographical, Thematic, Navigation Charts and Cadastral Maps and Plans.

The three basic cellular structures that every cell needs are the cell membrane, the cytoplasm, and the genetic material. The cell membrane functions to regulate what enters and exits the cell, the cytoplasm provides a medium for cell organelles to function in, and the genetic material contains the instructions for cell function and replication.

Cell Membrane: The cell membrane is a thin, flexible barrier that encloses the cell and separates its internal environment from the external environment. It is made up of a phospholipid bilayer and is selectively permeable, meaning it regulates what substances enter and exit the cell.

Cytoplasm: The cytoplasm is a gel-like substance that fills the inside of the cell and contains various cell organelles, such as mitochondria, ribosomes, and the endoplasmic reticulum. The cytoplasm is important because it provides a medium for the organelles to function in and facilitates the movement of materials within the cell.

Genetic Material: The genetic material of the cell is the DNA that contains the instructions for cell function and replication. In prokaryotic cells, the genetic material is found in the cytoplasm, while in eukaryotic cells, it is found in the nucleus.

In summary, every cell needs a cell membrane to regulate what enters and exits the cell, cytoplasm to provide a medium for cell organelles to function in, and genetic material to contain the instructions for cell function and replication.

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It is unsafe to look at a solar eclipse without special sunglasses. True

It is safe to look at a lunar eclipse without special sunglasses. False

The color of dog breeds can be black (BB or Bb) or brown (bb), and the ability to create pigment depends on the presence of the A gene (AA or Aa). The aa genotype results in no color (albino/white). Punnett squares can be used to predict the possible genotypes and phenotypes resulting from a cross between two dogs.

To determine the possible outcomes of a cross between two dogs, we can use a dihybrid Punnett square. Let's assume one dog is black (BbAa) and the other is brown (bbAA).

The Punnett square for the BbAa x bbAA cross would look like this:

 Bb    Ba

bb | Bbba | Bbaa

bb | bbba | bbba

From the Punnett square, we can see that there are four possible genotypes for the offspring: Bbba, Bbaa, bbba, and bbba. Among these genotypes, the Bbba and Bbaa genotypes will result in black-colored dogs, while the bbba and bbba genotypes will result in brown-colored dogs.

It's important to note that the presence of the A gene is necessary for color to be expressed, so the aa genotype would result in no color (albino/white) regardless of the B gene.

In summary, the use of a dihybrid Punnett square allows us to predict the possible genotypes and phenotypes of offspring resulting from a cross between dogs with different color and pigment gene combinations.

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Answer:

Yes, so basically it’s.. yeah.

Explanation:

Explanation: so all you had to do was add.

Answer:

The glycocalyx is a thick outer covering of the plasma membrane.

The humoral immune response is a chain reaction of antigens and Interleukins that results in: The differentiation of effector B cells into plasma cells to make antibodies.

The correct answer is option B.

When sedimenting samples A through D below have the same volume and packing, but contain different percentages the most likely sample with greatest permeability is Sample D: 50% pebbles and 50% cobbles.

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Answer:

it can't be used to make a protein in that cell.

Explanation:

If a gene is not transcribed in a cell, it can't be used to make a protein in that cell. If a gene does get transcribed, it is likely going to be used to make a protein (expressed). In general, the more a gene is transcribed, the more protein that will be made.

The transcription is affected as when the gene has not been transcribed the protein will not make. When a gene is transcribed, protein synthesis can happen.

Gene expression begins with transcription. To create an RNA molecule, the DNA sequence of a gene must be copied. RNA polymerases, which join nucleotides to create an RNA strand, carry out transcription (using a DNA strand as a template).

A gene cannot be used to produce a protein in a cell if it is not transcribed there. If a gene gets transcribed, it will probably be used to produce a protein (expressed). In general, more protein will be produced the more a gene is transcribed.

Therefore, the transcription is impacted since the protein cannot be produced if the gene is not transcribed. Protein synthesis can take place when a gene is transcribed.

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He will be less likely to contract an STI.

Option B is the correct answer.

STI stands for sexual transmitted infection.  A sexually transmitted infection (sexually transmitted disease) is a serious condition that can develop after you have sex.

So if Nasir is 12 years old, and if his caregivers talk with him openly about sexuality, he will be well informed about dangers of premature sex and sexually transmitted disease.

Thus, he will be less likely to contract an STI.

The wrong choices in the given options are;

He will soon come out as gay.

He will have sex by age 13.

He will marry by age 18.

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Answer:

A. All living things are made of multiple cells.

Answer:

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1-Water is passively transported into the roots and then into the xylem. 2-The forces of cohesion and adhesion cause the water molecules to form a column in the xylem. 3- Water moves from the xylem into the mesophyll cells, evaporates from their surfaces and leaves the plant by diffusion through the stomata.

Explanation:

False.

Light illuminates our surroundings which helps us to see.

Hope it helps =D

The example that includes only chemical changes that occur in the digestive process is the reaction of saliva, stomach acid, bile, and pancreatic juices with food. Option D.

Chemical changes refer to changes to the chemical properties of substances. In biological reactions, these substances are referred to as reactants.

Chemical changes are different from physical changes. In physical changes, only the physical properties of substances are altered while their chemical properties remain intact.

When a substance changes chemically, its physical properties most often change along. However, this is not in all cases.

Thus, looking at the examples given, their classification into either physical or chemical changes is as follows:

When saliva, stomach acid, bile, and pancreatic juices react with food, the chemical properties of food change because the enzymes convert different components of food from one form to another as part of the process of digestion.

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Land use change (mainly for large-scale food production), which is responsible for 30% of the global biodiversity decline, is the primary direct cause of biodiversity loss.

The variety of animals, plants, fungi, and even microorganisms like bacteria that make up our natural environment are all included in what is known as biodiversity.

The greatest direct source of biodiversity loss is land use change, which accounts for 30% of the worldwide decline in biodiversity (mostly due to large-scale food production).

The second major factor, accounting for 20%, is overexploitation (overfishing, overhunting, and overharvesting) for goods including food, medicine, and timber.

Thus, this is the main negative impact on biodiversity.

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Answer: Three key parts of the recipe for evolution are variation, selection, and inheritance.

Explanation:

VARIATION:- The first part of the recipe is variation. Variation refers to the differences that exist between individuals within a SPECIES. These variations can be caused byGENETIC MUTATION, environmental factors, or a combination of both. Some variations may be advantageous and provide a better chance of survival, while others may be disadvantageous and decrease the chances of survival.

Selection: The second part of the recipe is selection. Selection refers to the process by which individuals with advantageous variations are more likely to survive and reproduce, passing on their advantageous traits to their offspring. This is known as natural selection, and it is the driving force behind evolution.

Inheritance: The third part of the recipe is inheritance. Inheritance refers to the passing down of genetic traits from one generation to the next. Offspring inherit genetic traits from their parents, including any advantageous variations that their parents may have had.

The two correct statements that relate RNA, amino acids, and proteins are C and D.

RNA is used to build the amino acid sequence: RNA molecules, specifically messenger RNA (mRNA), serve as templates for protein synthesis. During a process called translation, the sequence of nucleotides in mRNA is read by ribosomes, and the corresponding amino acids are assembled in a specific order to form a protein.

Long amino acid sequences fold in a specific way to form proteins: Proteins are composed of long chains of amino acids. After the amino acids are synthesized and linked together, the resulting chain folds into a three-dimensional structure, which is critical for the protein's function. This folding process is driven by various interactions between the amino acid residues in the chain, allowing the protein to adopt its specific shape and perform its specific function.

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The location of the fossil of S. crassirostris suggests that they might have eaten similar to modern-day "skimmers," a rare breed of shorebirds from the genus Rynchops that flies over still bodies of water and uses its submerged lower jaw to scoop up small fish and crustaceans.

The term "feeding habit" can apply to both the type of food that an animal consumes and the manner in which it obtains it.

Fossils are any surviving remains, impressions, or evidence of a once-living thing from a previous geological epoch. Examples include exoskeletons, bones, shells, animal or microbe imprints in stone, items preserved in amber, hair, petrified wood, and DNA traces.

An example is the fossil of S. crassirostris was found in limestone that formed in a warm sea-water lagoon.

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The law of superposition states that fossils found in the uppermost layers, i.e., layer A, are more recent than those found in the other layers, so option A is correct for the youngest fossil.

When the environment changes due to climatic changes, animals or plants remain under the rocks, leaving their imprints or hard parts of their bodies, which are later studied to learn about ancestors. The fossils that are present in the lowermost rock layers are the oldest, while the uppermost layer is the youngest as it is newly formed.

As a result, the law of superposition states that fossils found in the uppermost layers, i.e., layer A, are more recent than those found in the other layers, so option A is correct for the youngest fossil.

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ribeosomes.

the ribs :)

Answer:

A-Ribosomes

Explanation:

All protein is required by cells to be made on the ribosomes, and the ribosomes are found in the cell cytoplasm.