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Which of the following best describes how crossing over occurs during meiosis?
A) During prophase I, homologous chromosomes are lined up and pulled apart to opposite poles.
B) During prophase II, chromosomes overlap and sections of each chromosome switch places.

C) During prophase I, segments of chromatids are exchanged between homologous chromosomes.

D) During prophase II, sister chromatids trade places with each other before metaphase begins.

Answer:

A. Two new molecules form that’s re identical to the original molecule

Explanation:

My teacher went through this in class

Answer:

FUNGI PO ANG SAGOT KO PO TY

fungi are classified in plants Kingdom

Explanation:

hope it is accurate !!!!

mrna would be aga-aat-gta

trna would be aga-aau-gua

i learned this in biology recently

Answer:

1. DNA strand 1: TCT- TTA- CAT - DNA STRAND 2: - mRNA: amino acid sequence: tRNA:

25 POINTS!!! Calculate the ratio of H+ ions to OH– ions at a pH = 7. Find the concentration of H+ ions to OH– ions listed in Table B of your Student …

What is the purpose of meiosis? What type of cell is created (list all the scientific names)?

What would happen if cellular respiration does not happen?

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What type of melanin do albino people produce

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what is the structure of bacteria? what is the structure of a virus?

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Explanation:

Answer:

The amino acid should be serine

Answer:

stream

Explanation:

stream divides area's

Answer:

0.1% will be available at the highest trophic level

0.001 % of energy is available at the highest trophic level because about only ten precent of energy is carried from each step in the food chain.

In the wild, the food chain describes who eats whom. Everything that is alive, from microscopic algae to enormous blue whales, depends on food to thrive. Each food web represents a possible route for nutrients and energy to travel through the ecosystem.

As an illustration, grass makes its own sustenance from sunshine. A bunny consumes some grass. Eaten by a fox, the rabbit. When a fox dies, microbes decompose its remains and return it to the soil, where it feeds grass-like plants.

There is less biomass at the top of the food chain since there is less energy there than at the bottom, therefore the first 100 percent, 10 percent, 1 percent , 0.1 percent, 0.01 percent, and eventually 0.001 percent of energy are carried from each level in the food chain.

Therefore, only 0.001%  of the energy is available at the first trophic level.

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Answer:

A

Explanation:

Answer:

Annormal cells would counting to dived

Explanation:

i think is that one

If the 4th base in the sequence was deleted by radiation (mutation), how would the sequence be changed.

A mutation is a change to an organism's DNA sequence. Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations.

Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.

Our cells are constantly undergoing mutations, yet very few of these have any negative effects on our health. A mutation is never so advantageous in real life that it makes someone a superhero or does anything strange like give them wings.

Therefore, If the 4th base in the sequence was deleted by radiation (mutation), how would the sequence be changed.

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Answer: A

Explanation: most of the mass contained in the nucleus.

Most of the mass of an atom is contained in the nucleus. So the correct option is A.

The amount of matter that is contained in an atom is defined as the atomic mass of an atom. In mathematical terms, atomic mass is 1/12th of the mass of a carbon-12 atom. This is assigned an atomic mass of 12 units.

The unit for measuring atomic mass is called Dalton after the English scientist John Dalton.

Atomic mass is expressed as the sum of the mass of protons and neutrons. Protons are positively charged particles and neutrons are particles with no charge.

Atomic mass is expressed as the mass of protons and neutrons because protons and neutrons are present in the nucleus. Thus, it is said that most of the mass of the atom is concentrated in the nucleus.

The mass of electrons is comparatively less than the mass of protons and neutrons combined. Also, electrons are present in the atomic shells of the atom.

Therefore the correct option is A.

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Answer:

DIGESTIVE SYSTEM. The mouth is the first part of honeybees' digestive system. ...

RESPIRATORY SYSTEM. Honeybees do not have a specific organ for gas exchange.

Explanation:

Answer:

Well a single cell of testies divides to produce 2 sperm

Answer:

The geocentric model says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it. The early heliocentric models consider the sun as the center, and the planets revolve around the sun.

Explanation:

Answer:

C.) the environment and agriculture

Explanation:

got it right on edge 2021 :)

Answer:

C) the environment and agriculture

Explanation:

edge

Answer:

Like the lac operon, the trp operon is a negative control mechanism. The lac operon responds to an inducer that causes the repressor to dissociate from the operator, derepressing the operon. The trp operon responds to a repressor protein that binds to two molecules of tryptophan.

Answer:

antibiotics resistant occur when the body build up a resistance to antibiotics

Answer:

Cytokinesis

Explanation:

The cytokinesis of the cell cycle occurs after this phase (telophase).

Answer:

Explanation:

1. Stars form deep inside clouds of gas and dust. A cloud of gas and dust is a Nebula (plural - Nebulae). Star forming nebulae are cold, dense, and dark. Gravity causes the densest parts to collapse, forming regions called protostars.

2.Gravity

3.STAR FORMATION Star formation happens when part of a dust cloud begins to contract under its own gravitational force; as it collapses, the center becomes hotter and hotter until nuclear fusion begins in the core. ... Interstellar cloud starts to contract, probably triggered by shock or pressure wave from nearby star.

4.As the protostar gains mass, its core gets hotter and more dense. At some point, it will be hot enough and dense enough for hydrogen to start fusing into helium. It needs to be 15 million Kelvin in the core for fusion to begin. When the protostar starts fusing hydrogen, it enters the "main sequence" phase of its life.

5. Gas and Dust in Space, the most massive reservoirs of ... Close-up of the Orion Nebula in Infrared and Visible Light. ... the material in the neighborhood of the new stars is blown away into interstellar space. ... material, and a newly formed star, surrounded by a disk, becomes observable.

Answer:

1. Stars form deep inside clouds of gas and dust. A cloud of gas and dust is a Nebula (plural - Nebulae). Star forming nebulae are cold, dense, and dark. Gravity causes the densest parts to collapse, forming regions called protostars.

2.Gravity

3.STAR FORMATION Star formation happens when part of a dust cloud begins to contract under its own gravitational force; as it collapses, the center becomes hotter and hotter until nuclear fusion begins in the core. ... Interstellar cloud starts to contract, probably triggered by shock or pressure wave from nearby star.

4.As the protostar gains mass, its core gets hotter and more dense. At some point, it will be hot enough and dense enough for hydrogen to start fusing into helium. It needs to be 15 million Kelvin in the core for fusion to begin. When the protostar starts fusing hydrogen, it enters the "main sequence" phase of its life.

5. Gas and Dust in Space, the most massive reservoirs of ... Close-up of the Orion Nebula in Infrared and Visible Light. ... the material in the neighborhood of the new stars is blown away into interstellar space. ... material, and a newly formed star, surrounded by a disk, becomes observable.

Explanation:

Answer:

yes

Explanation:

Pretty much is only with breathing. If a person has asthma, the inside of these airways is irritated and swollen. Asthma can cause shortness of breath, wheezing, coughing, and tightness in the chest. For some people, asthma symptoms only appear when they are exposed to something that irritates their breathing. Others have a kind of asthma that makes breathing difficult all of the time.

ANSWER FOR YOUR QUESTION

The proteins made by the rough endoplasmic reticulum are for use outside of the cell. Functions of the smooth endoplasmic reticulum include synthesis of carbohydrates, lipids, and steroid hormones; detoxification of medications and poisons; and storage of calcium ions

Answer:

Question one: Greater biodiversity in ecosystems, species, and individuals leads to greater stability. For example, species with high genetic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances, disease, and climate change.                Question two: If those resources limit growth, then increasing functional richness should lead to greater total productivity and decreased loss of resources from the ecosystem. Facilitative interactions among species could also lead to increases in ecosystem pools or process rates as species or functional richness increases.                                                                                      Question three: Important direct drivers affecting biodiversity are habitat change, climate change, invasive species, overexploitation, and pollution.

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Here is your answer

uses of carbohydrates

Production of pulp from wood cellulose, applications of starch for paper making as well as uses of glucose and saccharose for fermentation are the most important chemical and technical uses of carbohydrates. Carbohydrates used as fermentation feedstock are essential for the chemical industry.

The use of proteins from renewable raw materials contributes to the creation of a biobased, sustainable economy. Proteins are used in many industries mainly in the form of enzymes. Consider the importance of enzymatic catalysis in the food, textile and detergent industries.

Answer:

B

Explanation:

Answer:

Argon

Explanation:

The element that has a complete valence electron shell is argon (Ar) since it is a noble gas in the last group on the periodic table. destinymitchell966

Answer: All living things are composed of single cells or multiple cells I guess?

Answer:

All living things are composed of single cells or multiple cells.

Explanation:

.

Chromosomes determine all inherited traits because they are made up of DNA.

Chromosomes allow DNA to be accurately copied during these cell divisions. So one more time. Chromosomes are found in the nuclei of our cells and allow DNA to be accurately copied during cell division. This ensures that our inner workings proceed smoothly and efficiently.

The main function of chromosomes is to carry the DNA and transfer the genetic information from parents to offspring. Chromosomes play an important role during cell division. They protect the DNA from getting tangled and damaged.

Chromosome are the thread-like structures intermingled with each other in the nucleus. They carry genes that help in the transfer of characters from the parents to the offspring and thus play an important role in the inheritance of characters.

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Answer:

C. adhesion

Explanation:

Adhesion is the sticking together of two different types of molecules, so in surface tension, the water (or whatever other liquid) is sticking to a surface that is essentially made up of different molecules. Making the type of bond adhesion.

Answer:

its found in the nucleus