What cellular structures do eukaryotic cells contain, but prokaryotic cells lack?


Group of answer choices


lysosome


mitochondria


nucleus

The cardiovascular system has three main functions:

transport of oxygen, carbon dioxide and nutrients.

clotting of open wounds.

regulation of body temperature.

The energy of Bremsstrahlung (Brems) rays and characteristic rays in X-ray production is determined by different factors:

In summary, the energy of Bremsstrahlung rays is determined by the kinetic energy of the incident electron, while the energy of characteristic rays is determined by the difference in binding energies of the involved electron shells in the target material.

To learn more about Bremsstrahlung, visit here

https://brainly.com/question/30026708

#SPJ11

A gene variation is an alteration to a gene's DNA sequence that takes place throughout time. Gene variation is regarded to be a more accurate word for this sort of genetic change than gene mutation since changes in DNA do not necessarily result in illness.

Finding the nucleic acid sequence, or the order of nucleotides in DNA, is the process of DNA sequencing. The four bases—adenine, guanine, cytosine, and thymine—are arranged in this way using any technique or technology. Rapid DNA sequencing techniques have significantly sped up biological and medical research and discoveries.

For fundamental biological research, DNA Genographic Projects, and many applied sectors including medical diagnostics, biotechnology, forensic biology, virology, and biological systematics, knowledge of DNA sequences has become essential.

Learn more about dna sequence

https://brainly.com/question/29925842

#SPJ4

Answer:

2.

Explanation:

Answer: organize their observations in a meaningful way

Explanation: grouping objects on the basis of similar characteristics allows scientists to organize observations in a meaningful manner

Answer:

I'm not sure but maybe because if the pelican goes exactly where the fish is the fish will naturally move forward to escape so instead of catching the fish the pelican would get a mouth full of water. If the pelican aims for a spot a little different then where the fish actually is the pelican can might catch it because the fish went to its direction. (sorry if that's not correct)

Answer:

The modify Earth's surface

Explanation:

Tsunamis happen due to volcanic earthquakes in the water. But they flood the earth when they happen and cause for land to take up a water form and for the sea level to rise. Earthquakes reform the platform of the Earth's surface, causing cracks and sink holes.

Answer:

A & B are wrong so it's either C or D and I chose C

Explanation:

Because the theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle.

The bird in this puzzle which would likely be its closest living relative is the Po'ouli.

This is regarded as the black-faced honeycreeper which is also an extinct species as a result of habitat damage in Hawaii.

This bird is a species of the honeycreeper with a characteristic black face,  short, straight beak which is why it was chosen as the most appropriate choice.

Read more about Honeycreeper here https://brainly.com/question/1065486

Natural selection consists of four components: variation, inheritance, rapid population growth, and differential survival and reproduction.

Natural selection is the process by which organisms with advantageous changes survive and reproduce more frequently. Adaptation is an inherited variation that increases an organism's chances of survival.

Individuals in a population are naturally variable, which means they differ in some ways. This variation indicates that some people have traits that are better suited to their environment than others.

Evolution refers to the gradual changes that occur in organisms over time that result in the formation of more complex forms. The study of the history of the evolution of newer forms of life on Earth from pre-existing forms over time is known as evolutionary biology.

To know more about natural selection click here,

https://brainly.com/question/2725702

#SPJ4

The energy from wavelengths of 440 nm is heavily absorbed by chlorophyll b. B. Green helps with light absorption during photosynthesis.

Chlorophylls, anthocyanins, carotenoids, and betalains are the four major divisions of plant pigments. The majority of plant colors that are derived naturally come from them.

Carotenoids are pigments that are both common and necessary for photosynthesis. The wavelength range of light that can drive photosynthesis is increased by their absorption in the blue-green area of the solar spectrum and transmission of the absorbed energy to (bacterio-)chlorophylls.

To know more about plant pigments visit:-

https://brainly.com/question/13914352

#SPJ4

There will be two chromatids (2 DNA molecules) by the time metaphase I occurs.

Chromatin refers to a mixture of DNA and proteins that form the chromosomes found in the cells of humans and other higher organisms. Many of the proteins — namely, histones — package the massive amount of DNA in a genome into a highly compact form that can fit in the cell nucleus.

Chromatin is a complex of DNA and protein found in eukaryotic cells. The primary function is to package long DNA molecules into more compact, denser structures.

Meiosis is a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes (the sex cells, or egg and sperm). In humans, body (or somatic) cells are diploid, containing two sets of chromosomes (one from each parent)

To know more about chromatin visit the link

https://brainly.com/question/32813633

#SPJ11

Answer:

physical process of atoms or molecules moving apart within a gas or liquid.

Explanation:

Answer:

The act of a solvent going from high concentration gradient to low concentration gradient

Explanation:

I had this lesson last month

The Genetic drift, gene flow, mutation, natural selection, and mating patterns are some of the variables that affect this.

The relative fitness of people who carry each allele and the environmental factors that affect their survival and reproduction will determine whether the frequency of black alleles is higher or lower than that of white alleles.

Freshwater aquariums can support the growth of white algae, which are extremely prevalent. Your fish won't be harmed by it, but it can be ugly. You'll learn about the causes of the proliferation of these white algae in this post, along with the methods you can take to get rid of them from your tank.

Black people must have at least one B allele since the colour is dominant. Either BB or Bb could be their genotype. There are no black people included in this pedigree.

To know more about allele visit:

brainly.com/question/14206531

#SPJ1

C ). The hydrophilic head attracts water, and the hydrophobic fatty acid tail repels water. The structure of the phospholipid is related to its function as a major component of cell membranes.    

Phospholipids have a polar hydrophilic head composed of a phosphate group and a glycerol molecule, and nonpolar hydrophobic tails composed of fatty acid chains. This structure creates a bilayer in which the hydrophilic heads face outward towards the aqueous environment, while the hydrophobic tails face inward away from the water.

This arrangement provides a barrier that separates the cell's internal environment from the external environment. The hydrophobic tails prevent water-soluble molecules from passing through the membrane, while the hydrophilic heads allow the passage of water and small polar molecules. The fluidity of the phospholipid bilayer is also important for cell membrane function, as it allows for the movement of molecules across the membrane. Therefore, the specific arrangement of the hydrophilic and hydrophobic components of the phospholipid is essential to the function of the cell membrane.

To know more about  cell membranes  visit:-

https://brainly.com/question/13524386

#SPJ11

Of the available options, the first one states that cellulose is a structural part of the hair, this is not correct for several reasons, first cellulose is a biopolymer characteristic of cellular walls in plants, and it's not present in animal cells, secondly human hair is formed mainly of keratin a protein, therefore their basic units are amino acids, not carbohydrates. Therefore taking this into consideration, the correct answer is option 1.

The ratio of offspring that possess the following phenotype is as follows:

Learn more about punnet square at: https://brainly.com/question/14504341?referrer=searchResults

Answer:

9, 16, 3, 16, 3, 16, 1, 16

Explanation:

Brown body and red eyes ⇒ 9 ⇒ 16
Brown body and brown eyes ⇒ 3 ⇒ 16
Black body and red eyes ⇒ 3 ⇒ 16
Black body and brown eyes ⇒ 1 ⇒ 16

Clonal selection occurs with both T cells and B cells.

Define clonal selection.

To respond to infections, the body creates B and T cells through a process known as clonal selection. These cells can recognize particular viruses because they each have a different set of receptors. The B and T cells that can identify the intruder grow quickly to produce an army of cells to combat the infection when it enters the host.

Random mutations during clonal expansion result in the development of B cells with higher antibody-binding affinity for their antigens during clonal selection. Secondary immune responses are so successful at preventing reinfection by the same pathogen, which may be explained by the clonal selection hypothesis.

To learn more about clonal selection use link below:

https://brainly.com/question/15902626

#SPJ1

Answer:

sorry I just know one 2

Explanation:

A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a vertebrate's body.

Transcription and gene regulatory networks. coding and noncoding RNA mechanisms of action and function. protein synthesis are 4 concepts learned this unit in genetics.

What is genetics?

The study of genes and heredity, or how particular characteristics or traits are passed from parents to offspring as a result of changes in DNA sequence, is known as genetics. A gene is a section of DNA that has the instructions needed to create one or more molecules that support bodily function. A double helix, or corkscrew-shaped ladder, is how DNA is shaped. The bases are pairs of the four building blocks adenine, thymine, guanine, and cytosine, and the two ladder rails are referred to as the backbones. The instructions for constructing molecules, the majority of which are proteins, are included in the sequences of these nucleotides. According to researchers, there are around 20,000 genes in humans.

Read more about genetics:

https://brainly.com/question/12111570

#SPJ1

The answer is C, all are alive or have been alive.

Answer: Hydrogen bond or a covalent bond.

Explanation:

A hypothesis to have explanatory power because The hypothesis has been tested many times and over a wide variety of conditions (Option D).

A hypothesis can be defined as an explanation of a given question that emerged by observing the real world, which must be tested using the scientific method.

In conclusion, A hypothesis to have explanatory power because the hypothesis has been tested many times and over a wide variety of conditions (Option D).

Learn more about hypothesis testing here:

https://brainly.com/question/11555274

#SPJ1

Answer: (B) Prevailing winds

Explanation:  the name for winds that usually blow in the same direction is Prevailing winds

The name for winds that usually blow in the same direction is "Prevailing winds". Therefore, option (B) is correct.

Prevailing winds are the dominant winds that blow consistently over a region, resulting from the combined effects of global atmospheric circulation patterns, the Coriolis effect, and local geography. These winds typically blow from the same direction and have a significant impact on regional climate, as they can bring in moisture, temperature changes, and other weather conditions.

Prevailing winds can be important for agriculture, transportation, and other human activities that are affected by weather patterns. Therefore, option B, prevailing winds, is the correct answer

Learn more about prevailing winds, here:

https://brainly.com/question/14994329

#SPJ2

When visiting an aviary at the zoo, you can classify the different types of birds using various characteristics. These may include their size, color, beak shape, feather patterns, and behavior. Additionally, you could observe their preferred habitat within the aviary, their feeding habits, and the sounds they produce. By comparing these characteristics, you can identify and appreciate the diverse bird species found in the aviary.

When visiting an aviary at a zoo, there are several characteristics that can be used to classify the different types of birds. One way is to group them based on their physical features such as their size, color, beak shape, and wing span. Another way is to group them based on their diet, habitat, and behavior. For example, birds that eat seeds and fruits can be classified together, as well as birds that live in trees or on the ground. Additionally, birds that migrate can be classified differently from those that do not. Overall, there are many ways to classify birds in an aviary at the zoo.
To know more about aviary visit:

https://brainly.com/question/30334424

#SPJ11

The goal of this procedure is to create identical DNA copies so that mitosis will result in identical daughter cells.

DNA replication happens during the S phase of the cell cycle to make sure the genetic material is replicated and passed on to the daughter cells. This mechanism makes sure that the daughter cells are similar to the parent cells and share their genetic makeup.

This is necessary for mitosis to be completed successfully and for the development of two daughter cells that share the same genetic material.

Learn more about mitosis at:

https://brainly.com/question/29768164

#SPJ1

When using the Nernst equation to calculate membrane potential, the assumption that is not good is (b) The plasma membrane is primarily permeable to Na+.

At rest, the membrane is more permeable to K+ rather than Na+ ions, which contributes to the resting membrane potential.

In fact, at rest, the plasma membrane is much more permeable to K+ ions than Na+ ions. This is because the membrane contains a large number of K+ channels that are open at rest, allowing K+ ions to move freely across the membrane according to their concentration gradient.

The concentration gradient of K+ ions tends to drive them out of the cell, which creates a negative charge inside the cell relative to the outside, contributing to the resting membrane potential.

On the other hand, the concentration gradient of Na+ ions tends to drive them into the cell, which would tend to make the inside of the cell more positive relative to the outside.

However, the permeability of the membrane to Na+ ions is much lower than the permeability to K+ ions at rest, so the contribution of Na+ ions to the resting membrane potential is relatively small.

To learn more about cell, refer below:

https://brainly.com/question/30046049

#SPJ11

Insulin shock, also known as hypoglycemia, may develop due to several factors. In this case, the most likely cause is option B: missing an insulin dose.

When a person with diabetes misses their insulin dose, it can result in low blood sugar levels, leading to insulin shock.

The body releases insulin to take glucose from the blood into the cells when blood glucose levels are high. When the body consumes a meal high in carbohydrates, the blood is pumped through the colon and into the cells, where it must be delivered. Insulin is the only hormone that can do this. These prevent diabetes by keeping blood glucose levels within a normal range. If they don't, diabetes develops. On the other side, glucagon signifies a low amount of blood glucose in control.

The liver produces a chemical called glucose, which is crucial for metabolism because it controls blood glucose levels by causing cells to take up glucose, utilise it for various purposes, or store it. This suggests that more insulin is created the greater the level of glucose in diet.

Learn more about Insulin here

https://brainly.com/question/30838007

#SPJ11

I have long arms, mobile shoulders, and very robust finger bones. The type of locomotion that I practice is knuckle-walking.

Locomotion is the skill of a creature to move. Walking, running, swimming, and vaulting are the various types of movement. Locomotion helps us to move from individual places to different ones. In general, mammals demand movement for defense, probing for cooking, and shelter.

Knuckle-walking is a form of quadrupedal walking at which point the forelimbs hold the fingers in an incompletely flexed posture that admits frame pressure to push down on the ground through the yield. Knuckle-walking has generally acted apiece African excellent mimics, Pan someone who dwells in a cave (chimpanzees), Pan paniscus (bonobos), Gorilla gorilla (western gorillas), and Gorilla beringei (easterly gorillas).

To know more about Knuckle-walking refer to: https://brainly.com/question/28944993

#SPJ4