What is the twisted zipper shape of DNA called?

Answer:

two alleles

Explanation:

Mendelian inheritance refers to the inheritance of traits controlled by a single gene with two alleles, one of which may be dominant to the other. Not many human traits are controlled by a single gene with two alleles, but they are a good starting point for understanding human heredity

Answer:

32 ATP molecules

Explanation:

Glycolysis occurs in both aerobic and anaerobic states. In aerobic conditions, pyruvate enters the citric acid cycle and undergoes oxidative phosphorylation leading to the net production of 32 ATP molecules.

Cell Biology: Parts of the cell. Organelles.

The endoplasmic reticulum is an organelle found just outside the nucleus that is made of several interconnected cisternae, which membranes are continuous with the outer nuclear membrane.

It has two sections: the rough endoplasmic reticulum, which has ribosomes on its surface, and the smooth endoplasmic reticulum.

Basically, the endoplasmic reticulum synthetizes proteins and membrane lipids, and then sends them to the place that needs them.

In turn, the Golgi body or Golgi complex is a different organelle that is also made of cisternae, and where the proteins sent from the endoplasmatic reticulum are processed and modified before reaching their final destination.

This means the correct answer would be B. The Golgi apparatus receives proteins from the endoplasmic reticulum that it can modify or store for later use.

Answer:

A

Explanation:

I believe its a because the nuclear envelope dissolves is one of the first things that happen and chromosomes form.

A student is having a hard time telling the difference between a parrot and a toucan. The student can use these mediums: audio recording, map, and photo.

Audio recording: Parrots make a lot of sound, and usually they sound like a person clicking their tongue. Toucans don`t make as much noise as parrots, and if they do, they sound like a frog croaking. So, an audio recording of these different calls can help him tell the difference between the two birds.

Map: Parrots and toucans live in different parts of the world.Parrots are widely distributed birds that live in the tropics of almost every continent. They are determined in Asia, Australia, Africa, Central America, and South America. Toucans have a miles smaller distribution than parrots. These birds are found only in Central and South America. They live almost exclusively in tropical forests and rainforests.

Photo: Using pictures, students can tell the difference between a parrot and a toucan. These two birds of hers differ greatly in their beaks. Most toucans have bodies the size of crows and large beaks that are half their length. Parrots generally have the same proportions regardless of size, but are much more variable in size.

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Answer:

Audio Recording

Explanation:

i would think photo because they look nothing alike but i guess audio recording since they sound different

Answer:

Phagocytosis

Explanation:

During phagocytosis, cells engulf large particles such as bacteria, cell debris, or even intact cells (Figure 12.34). Binding of the particle to receptors on the surface of the phagocytic cell triggers the extension of pseudopodia—an actin-based movement of the cell surface, discussed in Chapter 11.

Answer:

The sun / The UV lights that the sun emit

Explanation:

Dogwood and oak trees are two kinds of plants found in a forest. These trees and other forest plants get the energy they need for making food from Sun that is the solar energy which the plants use to produce sugar. Sun is the basic source that is used for photosynthesis.

Glucose is the end product of photosynthesis which is the ultimate source of energy for plants.

Photosynthesis usually takes place in 4 steps where the first step is the absorption of light where the light from sun is absorbed by stomata and the various reactions that take place in the light are called as the light reactions.

Transfer of light helps to electrons to excite and the excitation of electrons helps to make new products various phosophorylation reactions that is the production of ATP is taking place or the lysis of the product is taking place as well.

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Answer:

anther

Explanation:

Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.

All of the following statements about the Calvin cycle are correct except (a) G3P leaves the Calvin cycle to form sugar.

The Calvin cycle, also known as the Calvin-Benson cycle, is a light-independent process that takes place in the stroma of chloroplasts of the eukaryotic cell. The Calvin cycle is the main part of the dark phase of photosynthesis in which carbon dioxide, water, and ATP are used to make glucose. Carbon dioxide, RuBP, ATP, and NADPH are the reactants required for the Calvin cycle.

Glucose is ultimately used to produce cellular energy, and sugar is formed as a by-product. The Calvin cycle has three primary stages: carbon fixation, reduction, and regeneration. G3P, a three-carbon sugar molecule, is the direct precursor of glucose and fructose.

Glyceraldehyde 3-phosphate (G3P) is the major end-product of the Calvin cycle and serves as the starting point for the synthesis of other organic compounds within the chloroplast or exported to the cytoplasm. The correct statements about the Calvin cycle are: It is light-independent.ATP and NADPH are produced.

Carbon dioxide reacts with RuBP to form 3-PGA, which is then converted to 3PG. 1,3-bisphosphoglycerate (BPG) is produced by the reaction. BPG is then converted to G3P. Therefore, option (a) is correct.

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Answer:

Nutrition autotrophs ingestive heterotrophs absorptive heterotrophs mixotrophs movement flagella cilia pseudopods non-motile.

Explanation:

Hope this helped :)

The liver cell is more likely to be in G₀ phase compared to the stomach-lining epithelial cell.

This is because the stomach-lining epithelial cell needs to divide more than twice a day to replace the cells that are lost due to wear and tear. Therefore, it needs to keep progressing through the cell cycle and cannot afford to remain in G₀ phase for a long time.

On the other hand, the liver cell divides very slowly, and may only divide once every year or two. Hence, it is more likely to enter G₀ phase during the cell cycle and remain there until it receives a signal to re-enter G₁ and continue with the cell cycle.

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The population of a certain species has declined by 45% over the last ten years under Vulnerable Species.

The International Union for the Conservation of Nature's Red List of Threatened Species is the world's most complete list of plant and animal species that need to be protected. This list assesses the threat posed by thousands of species and subspecies, making it a very important tool for researchers and environmentalists. The most reliable resource for information on the state of biological variety is this list. Species that fall into the category of vulnerable (VU), includes those that have a very high risk of extinction due to rapid population declines of 30 to more than 50% over the previous 10 years (or three generations), a current population size of less than 1,000 people, or other factors.

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Answer:

Noroviruses

Explanation:

The liver cells wouldn't be able to produce the macromolecules in the protein category adequately.

A macromolecule, such as a protein or nucleic acid, is a very big molecule crucial to biophysical processes. It is made up of many atoms that are covalently bound. The smaller molecules known as monomers are the building blocks of many macromolecules. More atoms make up macromolecules than there are in regular molecules.

The job of macromolecules is to sustain structures. act as a repository for fuel to maintain and retrieve genetic data.

Proteins, nucleic acids, and polysaccharides are typical examples of macromolecules.

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Explanation:

While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water. ... While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.

Answer:

Species X and Y are related to humans.

Explanation:

The chart shows information about three different embryos early in their development. The best supported by the information in the chart is that Species X and Y are related to humans. Thus, option D is correct.

An embryo refers to the early development stage with respect to the multicellular organism. The organism should be again produced se-xually. Moreover, the development of embryonic should be a portion of the life cycle just done after fertilization and continued via when the structure of the body is formed like tissues and organs.

The development of embryonic i.e. used for proof with respect to evolution should be related species that contain the same embroys.The similarities during the embryo stage of development among different animals are due to the expression of ancient genes.

These ancient genes have the same evolutionary origin, thereby they are homo-logous sequences. For example, fish embryos and human embryos express certain homo-logous genes in the embryos stage, thereby leading to the development of gill slit during this stage.

Therefore,Thus, option D is correct.

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The best way to explain the discrepancy between the normal length of prolactin (199 amino acids) and the length of the polypeptide synthesized in the experiment (227 amino acids) is that in the absence of Signal Recognition Particle (SRP) and the Endoplasmic Reticulum membrane,a prolactin precursor molecule is therefore synthesized.

Prolactin also plays a role in the stimulation of the proliferation of oligodendrocyte precursor cells.

Relating to all, The Signal Recognition Particle plays a crucial role in mediating the transport of secretory and membrane protein to the Endoplasmic Reticulum or plasma membrane.

This can occur both in the prokaryotic or eukaryotic cell.

Answer:

Seaweed might start to grow out of control withough crabs eating it, octopuses on the other hand would struggle to find food and start to die off because they relie on crabs to be their food source.

Without crabs to consume it, seaweed would start to grow out of control; octopuses, on the other hand, might struggle to find food and begin to disappear because they depend on crabs as a food supply.

What is the role of seaweed and octopus in ecosystem?

Seaweeds are important components of marine ecosystems. They serve as the primary source of nutrients and energy for marine organisms.

Either directly when fronds are consumed or indirectly when decomposing sections break down into small particles that are ingested by filter-feeding species.

No other creature has a predatory function as significant as that played by octopuses in forming communities.

Therefore, the population of octopuses and seaweed in this ecosystem might be affected if a disease reduced the crab population​.

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Answer:

Actually, it’s not the DNA itself cannot leave the nucleus, but the Chromosome or Chromatin. Because, in the nucleus, DNAs are folded into Chromatin or Chromosome. Chromatin or Chromosome just like a rope, and the DNA just the fiber. It’s the rope cannot escape from the nucleus instead of the fibers.

Explanation:

Ossification and resorption, or the elimination of bone tissue, take place continuously throughout a person's lifespan.This enables the shoulders and skull to sag as the baby passes through the delivery canal.

In order to maintain calcium levels in the body, heal microfractures brought on by ordinary stress, and alter the skeleton throughout growth.  This procedure starts between the sixth and seventh weeks of embryonic development and lasts until the age of roughly twenty-five, but this varies slightly from person to person. Intramembranous ossification starts throughout a foetus' growth in the womb and lasts through puberty. The skull's sutures are open at birth, and neither are the clavicles' or skull's ossifications.

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Answer:

n

Explanation:

Answer:

the answer is A

Explanation:

The sun powers the water cycle and creates precipitation and the dams run off of water from the rain added to the river or lake.

Answer: ecosystem diversity

In the first 8 weeks of development, the event that does not occur is "option A- myelination of the spinal cord."

During the first 8 weeks period of embryo development, the embryo undergoes rapid growth and development, including the formation of a functional cardiovascular system (c), the presence of all body systems (b), and the beginning of ossification (d). Myelination, however, is a process that starts later in development, typically during the third trimester of pregnancy and continues after birth. This process involves the formation of a protective myelin sheath around the nerve fibers, which is crucial for proper functioning of the nervous system. It is important to note that while these events typically occur during this time frame, there may be individual variation and not all embryos will develop at the same rate or in the same way.

In summary, among the listed events, myelination of the spinal cord does not occur during the first 8 weeks of development. Therefore, option A is correct response.

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Answer: Bacteria because its single celled and it can only be seen through a microscope

Explanation: that's all i know

Answer:

move water and glucose

Explanation:

Answer:

Its B

Explanation:

This process is called condensation. These water droplets cling together and form clouds. When the droplets become heavy enough, they fall to the ground as precipitation.

Answer:it's B Water droplets and clouds

Explanation: I had this on my test hope it helps!

Answer: The corn plants were damaged by the herbicide.

Explanation

Depending upon the plant affected and the herbicide used, effects of herbicide damage differ. Popular signs include flattened stems or twisting or corkscrewing. Leaves can have shapes, sizes or textures that are irregular. Moreover, yellow or reddened leaves or leaf veins may. This usually leads to loss in crops as noticed from the maize plantation where more than half was lost.

The most plausible explanation of the low yield would be herbicide harm to the maize plants.

Herbicide damage has different consequences it depends on the plant as well as the herbicide employed. Ground down stems, twirling as well as rotating clockwise are popular symptoms.

Leaves could have varied forms, dimensions, and properties. Furthermore, yellow or reddish leaves especially leaf veins are possible. This frequently results in crop losses, as seen in the maize plantations, where more than half of the harvest was destroyed.

Thus the response above is correct.

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Explanation:

1 cuz we don't need that ,we need all of them exept number 1

Answer:

1. (Ribosomes are synthesized)

Explanation:

Ribosomes are only involved in the translation of mRNA to proteins. During DNA replication DNA helicase unwind the DNA double-strand by breaking hydrogen bonds between the two strands. DNA polymerase then replicates each strands using nucleotides complimentary of the replicating strands.  

The answers above is not my original answer, this question has already been answered previously by someone else, so all credit is given to Diatonic254.

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