please help with this

Answer:

Peas were an ideal choice for Mendel to use because they had easily observable traits there were 7 of which he could manipulate

The main reason why Mendel used a pea plant rather than anything else was because a pea plant had observable traits that could be easily recognized. Seven, in particular, he could manipulate in his experiment. Finally, he would cross-pollinate the peas and study each trait that passed on from one pea to another.

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Answer:

a person with type AB blood or a roan fur in cattle which is when cattle have a mixture of white and red fur

Answer:

Paracentric Inversion

Explanation:

Some of the mutations that occur in chromosomes involve inversions. These imply a structural change that affect the genes´ order in the chromosome.

In the inversion, the chromosome suffers two ruptures, and then it is reconstituted. The problem is that this reconstitution occurs inverted. These two ruptures might occur in the same chromosomic arm, or it might involve the centromere. The first case is known as paracentric inversion while the second case is called pericentric inversion. Note: The exposed example is a product of paracentric inversion, as the centromere is located between C and D genes, and the inversion involves E, F, and G genes.  

During meiosis, when homologous chromosomes mate, and a structure known as inversion loop is formed. The chiasms within them make a place to inviable gametes. The crossover event inside the loop produces create a bridge between the two homologous chromosomes, and the fragment without centromemer is lost. After that, the bride breaks, and the two homologous chromosomes segregates.  The final result is two viable gametes identical to the ones of the progenitors, and two inviable gametes, result of inversion.        

Answer:

became very cold, most animals became extinct they did

Explanation:

correct is it

-yoda

The Two changes that occurred on earth during the most recent Ice age are :

The last ice age occurred about 11700 years ago. This was a period when the glaciers covered most part of the earth. Because of the glaciers covering most parts the weather was extremely cold and this lead to the extinction of most animals that could not survive in severe weather conditions.

Hence we can conclude that the two changes that occured on earth during the most recent Ice age are :

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Answer:

Chloroplasts are structures found in the cytoplasm of plant cells that are the site for photosynthesis. They are green because they contain a pigment called chlorophyll.  Chlorophyll absorbs light to bring about the photosynthesis reaction. Light energy is crucial to initiate photosynthesis.

Photosynthesis allows the plant to convert carbon dioxide from air and water absorbed from the roots into oxygen and glucose, which are foods for plants. By releasing oxygen to air through photosynthesis, other living things can breathe in oxygen so that energy can be generated through another process, called respiration. Respiration is like the reverse reaction of photosynthesis, but it turns glucose to energy that supports living things.

Because plants also respire to generate energy, by using the glucose produced from photosynthesis, it also supports the food chain in the living world. Other organisms can consume plants for their energy.

In the end, chloroplasts and the chlorophyll inside are very important to the living world.

Answer:

Explanation:

According to the nutrition between the fox, the rabbit and the lettuce, it can be concluded:

-All three belong to the food chain of a specific region.

-The lack of any, would make the chain unbalanced, breaking it.

-The fox is a carnivore, so it feeds on the rabbit. While the rabbit is     herbivorous, it feeds on plants.

-The rabbit and the fox are mammals, while the lettuce belongs to the Asteraceae family.

Answer:

The cuticle layer on the outside of the leaf

Explanation:

Answer:

Carbohydrate is a big source of energy for all living organism on this planet.

Explanation:

The carbohydrate which is a macro-molecule is produced by the producer such as trees and shrubs etc in the process of photosynthesis. These carbohydrates transfer to the primary consumer such as monkey who eat these plants. When the secondary consumer such as jaguar  eat these primary consumer, this carbohydrate again transfer from one organism to another organism. This carbohydrate is a source of energy which is broken down in the stomach into glucose and this glucose is absorbed by the cells and releases energy by mitochondria in the form of ATP. This energy is used in various activities such as walking, running and breathing etc. Carbohydrate, proteins and fats are the examples of macro-molecules.

Answer:

hi

Explanation:

Using your answers from Part 2, trace the path that energy flows in the ecosystem. What evidence does this give you about where energy in an ecosystem comes from?

Answer:

rueda y eje

Explicación:

La rueda y el eje es un tipo de máquina simple que se utiliza para mover las cargas. Consiste en ruedas y un eje que puede levantar cargas pesadas y mover esas cargas de un lugar a otro aplicando menos fuerza. Por lo tanto, la máquina que consta de rueda y eje es la mejor opción para mover una caja de 50 kg desde la planta baja hasta el primer piso que tiene una inclinación de 40 °. Esta caja se puede colocar sobre una máquina simple compuesta de rueda y eje y se puede mover aplicando fuerza desde un lado.

Explanation:

DNA is very small, one complete turn of a DNA helix is about ___3.4 nm___.

DNA is very small, one complete turn of a DNA helix is about 3.4 nm or 34 Angstrom long.

DNA stands for Deoxyribonucleic acid. DNA may be defined as a molecule that is composed of two polynucleotide chains that coil around each other to construct a double helix.

This molecule is also thought to carry genetic information based on the individuals and deliver instructions for the development, functioning, growth, and reproduction of all known living organisms and many viruses.

One complete turn of a DNA helix consists of 10 base pairs. So, the pitch of the helix is found to be 3.4 nm and the two strands are right-angled coiled.

The distance between the two base pairs in a helix is 0.34 nm.

Therefore, DNA is very small, one complete turn of a DNA helix is about 3.4 nm or 34 Angstrom long.

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Answer:

Hydrocarbon combustion

Explanation:

Carbon monoxide(CO) Carbon dioxide(CO2), but mostly carbon dioxide

Answer:

400 x

Explanation:

The highest magnification power of Stella's microscope is 400 x. magnification refers to the enlargement of size of an object. Due to this magnification, parts of the identified object such as cell can be seen clearly. 400 X means that the cell size is maximize up to 400 times as compared to its original size. Different microscope has different magnification power. The highest magnification power of light microscope is 1500x while the highest magnification power of electron microscope is 10,000,000x.

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Answer:

B - The membrane with more cholesterol will have increased fluidity at low temperatures and lower fluidity at high temperatures compared to the membrane with less cholesterol.

Explanation:

A nerve cell or "neuron" is different because it has a more specialized structure of communication using synapses, axons, dendrites and chemicals that allow it to use an electrochemical communication method via neurotransmitters.

However, like "general cells" they too have membranes, nucleus etc

Answer:

Complex Carbohydrates comprises starches and dietary fibers. Starches ate polymers of glucose. Dietary fibers are mainly indigestable complex Carbohydrates in plant cell walls (cellulose, hemicellulose, and pectin) and a variety of gums, mucilage, and algal polysaccharides.

Answer:

ljfkrejdmnc bdkcbkjdbjckbdkj idbb b  b b

Explanation:

Biological molecules are involved in the process of life. The research material that enables understanding of the biological molecules and their analysis can be accessed from library databases and research tools.

Biological molecules have been defined by the organic and inorganic compounds that are present and function in the living cell. They are considered the fundamental unit of life that consists of "carbon, oxygen, hydrogen, sulfur, and nitrogen molecules".

The online research tools and library databases of various research universities are the best places where one can access the research materials and information that allows the understanding of the importance of the biological molecules and the tests used to identify them.

Therefore, libraries and databases are used to get research information.

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Answer:

option c is correct that is 32

Explanation:

meiosis occur in two phases in the first phase DNA replication occur and amount of DNA becomes doubled without any changes in the chromosomes number and two daughter cells( each 2n) are formed

now in stage 2 each daughter cell undergoes mitosis with the formation of two cells  each with half chromosomes (n)

now 2n =32

n=32/2=16

after meiosis stage 1 ........ two daughter cell each with 32 chromosomes  

stage 2.... each daughter cell form two grand daughter cell each with 16 chromosomes

A cell with 32 pairs of chromosomes will have 32 chromosomes after meiosis I

WHAT IS MEIOSIS?

The actual reduction in chromosome number takes place in meiosis I. Hence, a cell with 32 pairs of chromosomes i.e. 64 chromosomes will have (64 ÷ 2) = 32 chromosomes after meiosis I.

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Answer:

It occurs in about 1 out of 17,000 people. The chances are low that the daughter will have ocular albinism. I can't calculate the exact amount.

Explanation:

Question:

Ocular albinism is an X-linked recessive trait that causes a lack of pigmentation in the eyes.

A father with ocular albinism and mother without the trait have a daughter.

What is the percent chance that the daughter will have ocular albinism?

Answer:

CORRECT (SELECTED)

0%.

Explanation:

In order for a daughter to be affected, she must be Xg Xg There is a 0 in 4 chance that they will produce a child with this genotype.

Answer:

Because they are sterile

Explanation:

Mules are considered to be a weak hybrid and not a separate species because they are sterile and cannot produce progeny of their own.

Mules are hybrid products from two separate species - a donkey and a horse.

A species is generally defined as a group of organisms that are capable of breeding to produce fertile offspring. Hence, in order for them to have the potential of being categorized as a separate species, they must be able to produce their own progeny but this is not the case.

Choice B is the right option since the cooling is fast.

The minerals may not have enough room to develop owing to a sudden cooling and therefore their structure is delicate and glassy. The composition of an igneous rock depends on how quickly the magma is cooled when the volcanic eruptions occur. Slow cooling allows big crystals to grow while rapid cooling allows tiny crystals to appear.

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Brainliest would be great!

Answer:

body size

more

circulatory system

egg deposition

Explanation:

Because of their large body size , ancestral amphibians likely faced challenges supporting themselves out of the aquatic environment.

Although there was far more oxygen available to gills in air than in water, the delicate structure of gills couldn't be supported in the terrestrial environment.

The costs of locomotion on land and greater oxygen demand from enlarged muscles led to modifications of the heart and circulatory system

These early amphibians could not venture too far away from water because egg deposition was restricted to moist environments.

The question is incomplete. The complete question is as follows:

Imagine a new type of cell was discovered on Mars in an organism growing in benzene, a nonpolar liquid. The cell had a lipid bilayer made of phospholipids, but its structure was very different from that of our cell membrane.

Describe what might be a possible structure for this new type of membrane.

A. This membrane would have the polar groups on the two surfaces facing the nonpolar solvent, and it would have a hydrophobic interior.

B. This membrane would have the polar groups on the two surfaces facing the nonpolar solvent, and it would have a hydrophilic interior.

C. This membrane would have the nonpolar groups on the two surfaces facing the nonpolar solvent, and it would have a hydrophobic interior.

D. This membrane would have the nonpolar groups on the two surfaces facing the nonpolar solvent, and it would have a hydrophilic interior.

Answer:

D. This membrane would have the nonpolar groups on the two surfaces facing the nonpolar solvent, and it would have a hydrophilic interior.

Explanation:

As per the description of the membrane, the membrane is made up of phospholipid and phospholipid are consist of two hydrophobic tails (non-polar) and one hydrophillic (polar) head.

As the cell membrane is growing in a non-polar liquid, benzene, the non-polar groups or hydrophobic tails will face the nonpolar solvent, as it will repel by the hydrophillic interior and polar head will face the interior of the memebrane.

Hence, the correct answer is D.

Answer:

Digestive enzymes are the natural substances our body needs to help  break down and digest food

We have three main digestive enzymes :

Proteases: These enzymes break down protein into small peptides and amino acids.

Lipases: break down fat into three fatty acids plus a glycerol molecule.

Amylases: Are responsible for breaking  down carbs like starch into simple sugars.

Explanation:

Digestive enzymes are proteins that catalyze mainly hydrolysis reactions that make nutrients absorbable in the digestive tract. Pepsin is a gastric enzyme that turns proteins into albumoses and peptones which are shorter peptide chains that are then hydrolyzed to even shorter chains until amino acids by intestinal enzymes. Pancreatic amylase is an enzyme that turns starch(a polysaccharide) into maltose(a disaccharide). Lipase is present in the gastric juice, the pancreatic juice, and the intestinal juice. This enzyme catalyzes the hydrolysis of lipids(mainly triglycerides) into fatty acids and glycerol. When incomplete hydrolysis occurs triglycerides can become monoglycerides.

Answer:

The function of Mitosis is to produce daughter cells that are genetically identical to the parent cells. have the same number of chromosomes as the parent cell but not the same genetic make-up are genetically identical to the parent cell have a random assortment of maternal and paternal chromosomes

(The answer is underlined above)

Explanation:

Mitosis is a nuclear division. This division results in the generation of two daughter cells that are genetically identical to the parent cells and each daughter cell contains the same number of chromosomes and all cell content inherited from the parent cell. Mitosis is involved in cell development of new cells and old one, growth of both new cells and old ones,  and asexual reproduction.

The chromosomes which are the DNA molecule that makes up the fundamental genome of the cell are copied before mitosis. This made sense to explain how important it is for chromosomes of the cell to be copied first before mitosis so as to enable the separation of the chromosome copies to give each cell a full set of identity similar to the one copied from.

The function of mitosis is to produce daughter cells, which are genetically identical to the parent cell.

It is the process in which two daughter cells are produced, which are identical genetically to each other, and to the parent cell. The process initiates with a diploid cell with 2N chromosomes and 2X DNA content, and at the end of the process two identical cells get produced each having same number of chromosomes and DNA content.

The replication of all the eukaryotic cells takes place by the process of mitosis, apart from germline cells, which replicate via the process of meiosis. The different phases of mitosis are:

Thus, the correct statement is that the daughter cells are genetically identical to the parent cell.

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Answer:

This should be 6 months

Explanation:

Generally ZiKa disease is caused by Zika virus,It is transmitted by Aedes  mosquito as vector.It symptoms(rashes,fever,joint pains) are mild in the first week,but very severe in pregnant women.Men who visited then endemic region are advised to delay intercourse for 3 months,while those who were infected were recommended to abstain from sex for  6 months,

This is because the virus has been found in the semen longer than other body fluids.it has been found in infected semen for 180 days after healing.

In infected pregnant women,this can be transmitted to the fetus,causing microcephaly in the unborn child,Protection against mosquito bites is best way of prevention.

In exposed lady the period of abstinence should be 2 months.

Answer:

The classification of the single issue is outlined in the section represented in segment explanations below.

Explanation:

Answer:

The correct answer is - whether owl eats the rabbits.

Explanation:

A hypothesis is a proposed answer for an unexplained event that doesn't fit into the current acknowledged logical hypothesis. The essential thought of a hypothesis is that there is no pre-decided result.

The Hypothesis can be proved or disproved by scientific research that has various steps but initiailly testing the hypothesis is essential:

- Making assumptions.

- Stating the research and null hypotheses

- Selecting the sampling pattern and specifying the test statistic.

- calculating the test statistic.

-Making a decision and interpreting the results.

Thus, the first step after forming a hypothesis is to check or test the hypothesis which is null hypothesis -whether owl eats the rabbits.

Answer:

Humans and animals both are depend on the cellular respiration. When o2 is released by plant is inhaled by animals and humans and exhale carbon dioxide.

Explanation:

Oxygen is stored during photosynthesis and produce oxygen in cellular respiration. Carbon dioxide and water are used in photosynthesis released cellular respiration. The energy that is releases during photosynthesis is stored by the process of cellular respiration. Glucose is broken down during the process of photosynthesis, to produce the food in cellular respiration.

The relationship shows that both are reactant to each other. The photosynthesis used sunlight , water and carbon dioxide to produce the glucose. The cellular respiration used that oxygen and water to produce carbon dioxide.

Cellulose helps make a plant strong and stiff, so it doesn't bend and break. It is in a plants cell walls.