Multicellular organisms contain specialized masses or layers called tissues.
What are tissues made up of?
A. Many organs that do the same job
B. Many cells that do a variety of jobs
C. Many organs that do a variety of jobs
D. Many cells that do the same job

Sexual reproduction involves the fusion of two gamates (haploid cells), resulting in diploid cells with genetic variation. On the other hand, asexual reproduction involves the division of a diploid cell resulting in cells genetically identical to the parental one.

Asexual reproduction involves the division of a cell through mitosis or fission, resulting in two equal cells carrying the exact same information and genetic charge. In several organisms, these dividing cells are diploid.

Sexual reproduction involves two haploid cells (gametes) that merge and compose a diploid cell. The genetic information of these new diploid cells is different from the parental one because gametes from each parent introduce genetic variability. Gametes are produced by meiosis.

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According to the Punnet square, if side flowers are dominant over end flowers, then crossing a homozygous recessive plant (pp) with a heterozygous side flowers Pp will produce dominant flowers Pp and over-end flowers pp in proportion 1:1.

The Punnet square is a graphical representation used in genetics to denote the genotypes and phenotypes that are expected from a given genetic cross.

In this case, the genetic cross in the Punnet square occurred between pea side flowers (heterozygous dominant Pp) and homozygous recessive  over-end flower plants (pp) is equal to:

         P           p

p   1/2 Pp    1/2 pp

Therefore, with this data, we can see in the Punnet square that the cross between a homozygous recessive plant (pp) with a heterozygous plant Pp will produce dominant Pp flowers and recessive pp flowers (50% each one or 1 to 1 proportion in progeny).

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In light-dependent reactions, when light strikes the pigments and excited electrons are passed to p700 or p680 chlorophyll molecules, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water.

Within the light-dependent responses, which take put in the thylakoid film, chlorophyll absorbs energy from daylight and after that changes over it into chemical vitality with the utilization of water.

The light-dependent responses discharge oxygen as a byproduct as water is broken and separated.

Each photosystem is adjusted by the light-harvesting complex, which passes vitality from daylight to the response center. It comprises numerous radio wire proteins that contain a blend of 300–400 chlorophyll a and b particles as well as other colors like carotenoids.

The photon causes an electron within the chlorophyll to end up “excited.” The vitality given to the electron permits it to break free from a molecule of the chlorophyll atom.

Chlorophyll is in this manner said to “donate” an electron. The retention of a single photon or particular amount or “packet” of light by any of the chlorophylls pushes that particle into an energized state.

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(3) "There is another transposable element of the same type present in the cell and it expresses a functional transposable enzyme.​​​​​" is the circumstance that this insertion sequence would be able to transpose.

Bacterial insertion sequence is a type of straightforward transposon. DNA segments known as transposons have the capacity to relocate throughout the genome. Only the genes necessary for their transposition are carried by insertion sequences.

The protein needed for the transposition of bacterial insertion sequences is called transposase. The binding sites for this protein are the brief repetitions found at both ends of the bacterial transposons.

Transposase's primary job is to make staggered incisions in the target DNA region where the insertion sequence will be put. The target DNA has a gap created by the transposase cut, which is where the bacterial transposons are placed.

It wouldn't be able to transpose if a deletion mutation eliminated the transposase gene from the insertion sequence.

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Question correction:

An insertion sequence contains a large deletion in its transposase gene. Under what circumstances would this insertion sequence be able to transpose?

Answer:

Newton's first law states that an object will remain at rest or move at a constant speed in a straight line unless it is acted on by an unbalanced force. According to Newton's first law, an unbalanced force is needed to move the book on your desk.

Explanation:

Thus, according to Newton's first law of motion, an object at rest begins to move when an unbalanced force acts upon it.

Answer: This is a huge category and includes almost all major surgeries and many diagnostic tests. If it leaves a scar, it is most likely an invasive procedure. Invasive procedures may be required to remove a tumor, repair a broken bone, or stop internal bleeding. Of course, these are just three examples: there are literally dozens of other indications for invasive procedures. Non-invasive procedures are also quite common.

Explanation: I hope it serves you

Answer: The major difference between invasive and non-invasive tests is that invasive tests are done by cutting or entering a body part using medical instruments, whereas non-invasive tests do not require breaking the skin or entering the body. Non-invasive tests include deep palpation, x-rays, and checking blood pressure.

Explanation:

see above.

The chances of Sam and Diane's healthy child not carrying Tay-Sachs disease will be 75 percent.

The Tay-Sachs infection is caused by a change in the HEXA gene. Tay–Sachs illness is an autosomal passive hereditary clutter, meaning that when both guardians are carriers, there's a 25% hazard of giving birth to an influenced child with each pregnancy.

A changed duplicate of the quality is passed from each parent to the influenced child. The causes are hereditary.

Tay-Sachs disease is a metabolic hereditary clutter that appears a dynamic weakening of mental and physical capacities due to nerve harm in the brain and spinal rope. It comes about in loss of muscle control and the long run, leads to visual impairment, loss of motion, and passing.

In this case, Sam and Diane have the recessive alleles for Tay-Sachs disease, so the healthy baby will have a 75percent chance of not having the disease.

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How long is the ulna?

Male students' ulna lengths ranged from 24 to 31 cm, whereas female students' ulna lengths ranged from 23 to 27 cm. Male students' mean ulna length was 27.40 2.13 cm, whereas female students' was 24.70 1.43 cm (p0.001).

How can one determine height in cm?

One of these entails raising a boy's average height by 2.5 inches (7.6 cm) and lowering a girl's average height by 2.5 inches (7.6 cm). Based on this methodology is the second calculator above. Another easy technique is to have the child's height doubled by the time he or she is two years old for boys or 18 months for girls.

What is height in cm?

Simply multiply your height in inches by 2.54 to get your height in cm to complete the conversion. In this instance, a person who is 5 feet, 6 inches tall is equivalent to 167.64 cm as measured in the metric system (66 x 2.54)

What factor accurately predicts height?

The height of the parents, or more particularly, the biparental height, is the best indicator of height. By combining the mother's and father's heights in inches, you may determine the biparental height. For boys, measure 5 inches longer; for girls, measure 5 inches shorter.

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Here are the reasons why the smokey bear policy of immediately suppressing all fires misguided:

The latest fires really bring to light an argument that ecologists have been having about whether Smokey should take some blame for the fire that are so often engulfing natural regions.

Smokey served as the spokesperson for the federal government's aggressive wildfire suppression strategy for a significant portion of the 20th century. Some experts think that strategy, combined with climate change, may have eventually made American woodlands more prone to burning.

The "Smokey Bear effect" is what they refer to. In recent years, Smokey has appeared in a variety of advertisements teaching millennials how to properly avoid campfires, maintaining his status as the face of wildfire prevention.

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It is stored in the reduced molecule NADPH and ATP energy released from transfer of electrons establishes a proton gradient across the thylakoid membrane.

Supplement manufacturers assert that chlorophyll has a wide range of benefits, including the ability to increase red blood cells, aid in weight reduction, mend damaged skin, remove toxins, reduce inflammation, and prevent cancer. It's an amazing list, yet only a few of the assertions are supported by research.

Chlorophyll can support healthy hair as part of a balanced diet. It does have anti-aging antioxidants, which may decrease hair loss brought on by aging scalp cells.

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If a seed develops by apomixis, it will be identical to its parent.

In order to hybridize with another strain, specific procedures are needed. However, apomixis assures the reliable multiplication of a hybrid strain once it has been created. A perennial, cool-season lawn grass is what is referred to as Kentucky bluegrass.

This indicates that it returns each year and grows most actively in the chilly months of fall and spring. Asexual reproduction without fertilization is known as apomixis in botany. Greek for "aside from" and "mixing" make up its origins.

Notably, meiosis is not included in this definition. As a result, "natural asexual reproduction" of plants, such as growth from cuttings or leaves, has never been thought of as apomixis; nevertheless, the replacement of the seed by a plantlet or the replacement of the flower by bulbils were both recognized as kinds of apomixis. Offspring born by apomicticism share the same genetic makeup as their parent plant.

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A deadly infection known as diphtheria is brought on by bacterial strains called Corynebacterium diphtheriae that produce toxins.

What was Corynebacterium diphtheriae also known as?

The pathogenic bacterium that causes diphtheria is Corynebacterium diphtheriae, which is also used as an image result for the disease. Due to German bacteriologists Edwin Klebs (1834–1912) and Friedrich Löffler's 1884 discovery of the organism. Another name for it is the Klebs-Löffler bacillus (1852–1915).

Lysogenic conversion, which occurs when viral DNA is incorporated into a bacterial chromosome, is the cause of diseases like diphtheria.

Therefore, The bacterium Corynebacterium diphtheriae is the cause of the highly contagious and sometimes fatal disease diphtheria.

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Such replication would be an instance of conservative replication.

The correct option is B.

Additionally, in vitro DNA replication (DNA amplification) is possible (artificially, outside a cell). Starting DNA synthesis at recognized sequences in a template DNA molecule is possible using artificial DNA primers and cell-isolated DNA polymerases.

Before dividing, cells must copy their DNA. This promotes successful inheritance of genetic features by giving each daughter cell a copy of the genome. The fundamental mechanism of DNA replication is similar across all organisms, making it a crucial operation.

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The complete question is -

Suppose a double-stranded molecule similar to DNA replicates itself, such that one molecule contains two old strands and the other molecule contains two new strands. Such replication would be an instance of _______ replication.

a. semiconservative

b. conservative

c. dispersive

d. exact

e. complementary

Codominance is the type of inheritance pattern that is best described below.

Codominance, refers to a type of inheritance in which two alleles of the same gene are expressed separately to yield different traits in an individual.

The best example of codominance is ABO blood group. ABO blood grouping is controlled by gene I which has three alleles A, B, and O and show codominance. Codominant expression occurs when two different alleles are inherited at the same genetic location, and the products of both of the alleles are expressed. Codominance is the most common pattern in blood group genetics.

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1) The structure in an organism is built so as to allow it to do the very reason why it is present in the organism.

2) The spermatheca helps in the storage of sp--erms

3) The possession of the male and female reproductive systems is called hermaphroditism.

1) We know that biological organism are quite complex in the way that they are designed. There are so many structures that we can find in the organism. These are the various kinds of arrangements that we see in the body of the organism that are there to perform various tasks in the living organism. It is also common that nature crafts the structure so that it can be able to perform the role that it is supposed to perform.

2) The structure that is called the spermatheca  is mostly found in the insect. It is one of the structures that plays a very essential role in the insect. In the female insect, the structure could be used in the storage of sp--erms.

3) A hermaphroditic organisms has both male and female reproductive systems. An example of a hermaphroditic organism is the worm.

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Answer:

DNA replication occurs before cell division in eukaryotic cells.

Explanation:

The development of the universe would not be able to move or function if there had been no dark matter.

This is referred to as the space, energy and matter present in space and is also everything we can feel, touch or see. Examples of the constituents include stars, planet etc and they have their unique properties and functions.

Without the presence of the dark matter in the universe, there will be no formation of  the larger versions of those galaxies and the universe won't be able to move or function thereby making it the correct choice.

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A solar eclipse occurs when the Moon comes between the Sun and Earth

When the Moon passes between the Sun and Earth, a solar eclipse occurs, emitting a shadow on Earth that either fully or partially blocks the Sun's light in some areas. This only happens sometimes, because the Moon doesn't orbit the same horizontal as the Sun and Earth do. A solar eclipse occurs when the moon gets between Earth and the sun, and the moon sends out a shadow over Earth. A solar eclipse can only happen during the new moon's phase when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface. Solar eclipses occur only at the new moon phase when the Moon is between Earth and the Sun. throughout a solar eclipse, the Moon casts a shadow on Earth, and blocks or partially blocks our view of the Sun.

So we can conclude that an eclipse of the Moon can only occur at Full Moon.

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The answer choice which best supports the idea that most attempts by scientists to create new chemical elements will fail is that: (D) scientists have to repeat their experiments an enormous number of times; if it works once it's seen as a success.

A chemical element can be defined as a pure substance that comprises atoms having the same atomic number (number of protons) in its nuclei and as such, it is the primary constituent of matter. Also, a common characteristics for all chemical elements found on the periodic table is mass and volume.

In Chemistry, some examples of a chemical element include the following:

In this scenario, we can reasonably infer and logically deduce that a statement which indicates that an attempt by scientists to create new chemical elements will fail is stating that "scientists have to repeat their experiments an enormous number of times; if it works once it's seen as a success." because an experiment to create new chemical elements must be tested and they all should have multiple successful results.

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Complete Question:

Which of the following answer choices BEST supports the idea that most attempts by scientists to create new elements will fail?

(A) Scientists have to create a target with a carefully chosen atom; this is a process that takes months.

(B) Scientists have to smash atoms together and get them to stick; a positive charge makes them repel each other.

(C) Scientists have to bombard particles with specific protons; specialized atoms combine with neutrons.

(D) Scientists have to repeat their experiments an enormous number of times; if it works once it's seen as a success

Answer: Reproduction of viruses using host cells

Explanation: In the lytic cycle the viruses introduces its genome into a host cell and initiates replication by introducing itself into the host cellular machinery and makes copies of itself and developes  its own mechanism. Once introduced virus particles are released through lysis of the host cell into surrounding waters and produces its effects.

The fast spread of diseases is due to the lack of hygiene, the poor salubrity in public spaces, and the contamination of food and water.

Climate change is mainly due to the high concentration of greenhouse gases, and those in high concentrations have demonstrated adverse effects on health.

The fact that drugs are getting less effective in stopping the spread of diseases, and eradicating them, also makes the disease harder to control. And also, some mutations of the microbes can contribute to their ability to infect, and therefore spread the disease.

All of the factors contribute to the harder control of diseases, and might as well help them to spread. Therefore, the answer is A.

Photosynthesis function to absorb light and use electron transport chains to convert energy. The Calvin cycle reactions assemble carbohydrate molecules with this energy.

Photosynthesis use electron transport chains to convert energy while absorbing light. With this energy, the Calvin cycle reactions put carbohydrate molecules together.

Photosynthesis definition?

Given that the fundamental process has changed little throughout the course of time, all photosynthetic species have a strikingly similar evolutionary history.

The method and elements of photosynthesis that use water as an electron donor are generally the same in all forms of photosynthesis, including the enormous tropical leaves in the rain forest and small cyanobacteria.

Photosynthesis use electron transport chains to convert energy while absorbing light. With this energy, the Calvin cycle reactions put carbohydrate molecules together.

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Answer

C - teeth they have

Explanation

Answer:

C. Teeth they have

Explanation:

Carnivores, herbivores and omnivores may have some similarities in the shape and size of teeth, but each have teeth that are specifically adapted to the drastically different diets these animals consume.

Having warm weather all year with a distinct winter and summer season where winter is a long, dry, and slightly cooler season with only 4 inches of rain on average, and summer is a very hot, humid, and wet season with 15 to 25 inches of rain, with monsoon rains beginning in may describe the Savanna and grassland biome.

In Savana grassland, the trees are scattered and dispersed all over the place.

Most Savana and grassland forests are found in Africa covering an area of about 5 million square miles.

However, these forests are also abundant in South America, Australia, and India. In these regions, precipitation takes place all year round.

In the formation of Savana and grassland ecosystems, climate plays an important role.

In general, Savana is classified as broad-range grasslands typically dispersed over a large area.

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Answer:

The type of biome described with distinct winter and summer seasons is the savanna and grassland.

Explanation:

This type of biome is experienced both in Africa and in Australia the biome has two distinct seasons which are summer and winter, winter happens to be the dry season while summer is the wet season where rain is experienced.

The average rate of rain throughout the year during the wet season is around 15 to25 inches

The biome usually has grass and some scattered trees this is due to the lack of enough rainfall to support trees to grow

The wet season is during the summer and it is warmer in the rainy season than in the dry season because it is humid, winter is the dry season with clear skies and lower humidity.

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The statement that best describes a rattlesnake as a living system is one part of a more complex system a rattlesnake will shed its skin often as it grows. Thus, the correct option for this question is B.

The characteristics of the living system are as follows:

A rattlesnake can eat multiple mice in a single day must deal with the mode of nutrition and eating plan. While giving birth to ten young snakes at once follows a reproductive pattern. Living in the desert with other snakes reveals its level of adaptation and survival.

Therefore, the statement that best describes a rattlesnake as a living system is one part of a more complex system a rattlesnake will shed its skin often as it grows. Thus, the correct option for this question is B.

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Answer: A rattlesnake lives in the desert with other snakes.

Explanation: took the test

(C) Telophase happens directly after Anaphase.

Telophase is the last phase of the M-phase of cell division. It occurs in both mitosis as well as meiosis. It is the termination phase where the divided chromosomes reach on the poles and start to unwind, the mitotic spindle disassembles and all the cell organelles reappear.  

Anaphase is the third phase of the M-phase of cell cycle. In this phase the actual separation of the chromosomes occurs in the opposite poles so that each daughter cell gets its share of genetic material.  The mitotic spindles remain attached to the chromosomes during anaphase.

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Answer:

the cell membrane is very selective.

The cell membrane is a protective layer surrounding a cell.

The cell membrane allows waste to leave the cell.

Explanation: the cell membrane is a semipermeable barrier that separates the cell from its surrounding environment. Thus, the cell membrane helps the cell to maintain steady constant cellular conditions.

Answer:

Explanation:

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