the enzyme alpha-amylase that digests polysaccharides is secreted by the __________.

Answer:

B

Explanation:

The type of RNA that contains the information for making a protein is called messenger RNA (mRNA) because it carries the information, or message, from the DNA out of the nucleus into the cytoplasm. Translation, the second step in getting from a gene to a protein, takes place in the cytoplasm.

In humans (2n = 46), mitosis results in 2 cells with 46 chromosomes and meiosis results in 4 cells with 23 chromosomes. Hence, the correct option is (c).

The division of the nucleus into two identical nuclei is known as mitosis. Chromosome numbers are maintained throughout mitosis, with each of the daughter cells receiving the same number of chromosomes as the parent cell.  Mitosis is called equational division because each of the two daughter cells formed, get the same number of chromosomes as the parent. Mitosis is important for multicellular organisms because it provides new cells for growth and for replacement of worn-out cells. Many single-celled organisms rely on mitosis as their primary means of asexual reproduction. Meiosis is a type of cell division that reduces the number of chromosomes in a cell by half, from 2n (a diploid number) to n (a haploid number). Gametes are produced as a result of meiosis. The chromosomes are divided equally between the daughter cells during meiosis, resulting in the production of 4 cells with 23 chromosomes. Meiosis is called "reduction division" because it reduces the number of chromosomes to half the normal number so that, when fusion of sperm and egg occurs, baby will have the correct number. Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.

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Beetles are permitted to roam freely between two connected compartments that each contain one type of food and one type of food in an experiment on the feeding preferences of beetles. There is one degree of freedom in the experiment. Option B is Correct.

In the experiment, one meal type is eaten in comparison to another food type. The number of independent bits of information required to construct a statistic is called the degrees of freedom, which is frequently denoted by the letters v or df. It is determined by subtracting the number of constraints from the sample size.

As a result, a system with two degrees of freedom has two natural frequencies that correspond to its two typical modes of vibration. A set of independent coordinates, such as length, angle, or other physical properties, can be used to define a system. Option B is Correct.

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Answer:

RNA is a single strand helix and contain adenine uracil cytosine and guanine.RNA takes the original code from DNA and translate this code into proteins

Answer:

D) Fluorine

Hope this helps :)

The acceleration of the mass is 0.72m/s²

According to Newton's law of motion;

\(\sum F = ma\)

Given the following parameters

mass m = 25kg

Get the resultant force

\(\sum F=\sqrt{10^2+15^2}\\\sum F = \sqrt{100 + 225}\\\sum F=\sqrt{325}\\\sum F= 18.03N\)

From the formula:

\(a=\frac{\sum F}{m}\\a= \frac{18.03}{25}\\a= 0.72m/s^2\)

Hence the acceleration of the mass is 0.72m/s²

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Solution:

The four types of chromosomal structural abnormalities can be grouped into the following two groups:

Balanced structural anomalies:

1. Translocations: simple or complex movement of chromosome fragments or whole chromosomes. Chromosome breaks and a part of it is attached to a different chromosome.

2. Inversion: where the chromosomal region is flipped so that it points in the opposite direction. That is, part of a chromosome breaks off at two points and the segment in between turns upside down and then rejoins the same chromosome.

Unbalanced structural anomalies:

3. Duplication: where part of a chromosome is copied. This means that a part of the chromosome is duplicated or has two copies. The result is additional chromosomal material.

4. Deletion: where part of a chromosome is removed. That is, there is DNA loss.

Explanation:

Muscular Strength

Muscular endurance

Flexibility

Body Composition

In photosynthesis, if the stomata are closed to save water, then carbon dioxide cannot enter the leaf, and carbon dioxide could become the limiting factor.

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.

The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas. After the sugar is produced, it is then broken down by the mitochondria into energy.

Example: Green plants are nature's brilliant entities that come under this category. They carry out a photosynthesis cycle by taking in carbon dioxide and fixing it into carbohydrates (energy storage molecule).

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Answer:

46.5 billion light years

Answer:

The universe houses about 30-billion-trillion stars; that is 30,000,000,000,000,000,000,000 stars! The Earth is about 3.5 million times larger than a human. The Solar System is about 36 billion times larger than Earth.

Explanation:

Hope this helped plz mark brainliest :))

Answer: B

Explanation:

Answer: Its disruptive

Explanation:

did the test

The medications that act by inhibiting the adenosine 5-diphosphate (ADP) pathway required for platelet aggregation are known as ADP receptor inhibitors.

These drugs target the P2Y12 receptor, which is a G protein-coupled receptor that is activated by ADP released from activated platelets. By inhibiting the P2Y12 receptor, ADP receptor inhibitors can prevent platelet activation and aggregation, thereby reducing the risk of thrombosis. Examples of ADP receptor inhibitors include clopidogrel, prasugrel, and ticagrelor, which are commonly used in the treatment and prevention of cardiovascular disease, such as myocardial infarction and stroke. These drugs are often used in combination with other antiplatelet agents, such as aspirin, to provide more effective antithrombotic therapy.

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Answer:

750+(40xW)=S

750+(40x17)=----------

Explanation:

Answer:

Amphibians lay eggs.

Explanation:

Amphibians include frogs, toads, and salamanders. They are vertebrates, so they have a bony skeleton. Most amphibians live part of their lives underwater and part on land. Amphibians reproduce by laying eggs that do not have a soft skin, not a hard shell. Most females lay eggs in the water and the babies, called larvae or tadpoles, live in the water, using gills to breathe and finding food as fish do. As the tadpoles grow, they develop legs and lungs that allow them to live on land (aka metamorphosis). Even after they change, amphibians still have soft moist skin, and nearly all of them have to live in damp places, so they don't dry out.

Option A, methylation regulates transcription via the addition of a methyl group to cytosine bases of DNA.

DNA methylation controls gene expression by attracting proteins implicated in gene repression or by preventing transcription factor(s) from binding to DNA. De novo DNA methylation and demethylation both play active roles in the dynamic process that alters the pattern of DNA methylation in the genome during development. DNA methylation, in general, inhibits transcription, and loss of methylation is linked to gene activation. In rare circumstances, DNA methylation might directly obstruct the binding of transcription factors.

The complete question is:

Methylation regulates transcription

a. via the addition of a methyl group to cytosine bases of DNA

b. via the addition of a methyl group to cysteine residues on RNA polymerase II

c. via the addition of a methyl group to cysteine basses of DNA

d. via the addition of a methyl group to cytosine resides on RNA polymerase II

e. by interfering with the chromatin remodeling process

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Answer:

the system of naming organisms that lists the genus name first, then the species

Explanation:

Answer:

i think is b

Explanation:

but not sure

hope this helps

Answer:

Species overproduction

Explanation:

The more of the species that are born the more genetic mutation will occur. It cannot be asexual reproduction because by using asexual reproduction, they make genetically identical daughters/sons.

Only anti-A antibodies are present.

Answer:

a) Cats show incomplete dominance which means the kitten can be born with full length tails, short length tails and without tails.

b) The genotype of the parent will be heterozygous (Tt ) and the kittens will be:

Genotype | Fenotype

-TT | (long tail)

-Tt | (short tail)

-tt | (no tail).

Answer:

What Defines an Organelle?

In addition to the nucleus, eukaryotic cells may contain several other types of organelles, which may include mitochondria, chloroplasts, the endoplasmic reticulum, the Golgi apparatus, and lysosomes. Each of these organelles performs a specific function critical to the cell's survival. Moreover, nearly all eukaryotic organelles are separated from the rest of the cellular space by a membrane, in much the same way that interior walls separate the rooms in a house. The membranes that surround eukaryotic organelles are based on lipid bilayers that are similar (but not identical) to the cell's outer membrane. Together, the total area of a cell's internal membranes far exceeds that of its plasma membrane.

Answer: slime mold

Explanation: you may not think it but that's a organism not a fungi

The written exam for a driver's license can be classified as an achievement test.

A test is an instrument to measure knowledge or skills in a specific area.

Tests are classified based on their purpose into:

These tests measure both skills and knowledge, which means they integrate theory and practice.

This category applies to written exams for a driver's license because it is expected the examiner knows the theory such as the meaning of the traffic signs and the practice such as the steps to park a car.

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Answer:

Cytokinesis in plants and animals is different from each other due to the presence of cell wall in plant cells.

Explanation:

Cytokinesis in animal cells occurs by furrowing of the cytoplasm. In plant cells, cytokinesis is initiated with the formation of a cell plate in the middle of the cell.

Answer:

Inclusion: When the DNA profile of a suspect or a victim

consists with the DNA profile from the crime scene

evidence, the individual is “included” as the possible

source of that evidence.

Exclusion: When the DNA profile from a victim or

suspect is not consistent with the DNA profile created

from the crime scene evidence, the individual is “excluded” as the donor of the evidence but exclusion does not imply innocence.

Inconclusive. Inconclusive results imply that DNA

testing could neither include nor exclude an individual

as the source of biological evidence.

Energy is received from carbohydrates, proteins, and fats in the foods we eat. These nutrients provide calories, which are listed on food labels as nutrition facts.

Humans' requirements for energy are fulfilled by the food that we consume in the form of carbohydrates, fats, and proteins.

These calories are important for performing various physical activities such as walking, running, and talking.

A nutrition fact label lists all the necessary nutritional content, the number of calories and the serving size to provide necessary guidelines to consumers.

In many countries, the fact label is provided on the food packaging indicating the number of nutrients and other ingredients which are present in the food.

Furthermore, such nutritional facts are only for educational purposes and for rating food quality.

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