a phylogenetic tree of bird families constructed by cladistic analysis would be a hypothesis about which of the following?

Answer:

Explanation:

If the lipid bilayer is at least 108 times less permeable to K ions than it is to water, then a way that this much needed ions can get into the cell is through ion channels.

Ion channels are memberane proteins that form pores and they also span across the cell membrane allowing ions to pass through these pores. They act as a passage through which charged ions can pass through. There are three main type: voltage-gated, extracellular ligand-gated, and intracellular ligand-gated ion channels.

The specific DNA sequence where RNA polymerase binds and initiates transcription is called the promoter region.

Answer: Yes

Explanation: Monocots produce one cotyledon, while dicots produce two. Because seeds are reproductive structures and thus important to a species' survival, plants have evolved many mechanisms to ensure their survival. One such mechanism is seed dormancy. Dormancy comes in two forms: seed coat dormancy and embryo dormancy

Answer:Plants that reproduce by seeds. Seed plants have special structures on them where male and female cells join together through a process called fertilisation. After fertilisation, a tiny plant called an embryo is formed inside a seed.

Answer:

D

Explanation:

The technical definition for biomimicry is take inspiration from nature to emulate an invention

Answer:

The SRP would remain bound to the SRP receptor on the ER surface.

Explanation:

Because Signal recognition particle (SRP) receptorl, is a dimer composed of 2 different subunits that are associated only with the rough ER in human cells. It functions mainly is to identify the SRP units. And it SRP binds to a hydrophobic N-terminal signal sequence as it emerges from the ribosome.

Answer:

The fruits inside do not have enzymes, but if our body when digesting them, if these fruits are cooked they are much easier to digest by our digestive enzymes and if they are raw, digestion will be more laborious since it will have to break more masses chemicals that were not destroyed by cooking.

Regarding freezing, it does not intervene in digestion.

Explanation:

The cooking of vegetables or fruits like meats generates that some chemical unions are destroyed, thus exposing the most internal structures in enzyme activity.

Answer:

Heterotrophy, Autotrophy

Reasoning: Heterotrophy organisms are organisms who can't retrieve food themselves and use energy and sunlight in order to get their food, which is exactly what plant cells do. Autotrophy is the ability to produce things such as carbon dioxide and oxygen, which plants do as well. Hence, Heterotrophy and Autotrophy are the most reasonable answers.

Answer:

AUAUCUGCC

Explanation:

In DNA, the two strands are attached to each other by hydrogen bonding between the nitrogenous bases. The sequence of the other strand for the given strand: TATAGACGG is ATATCTGCC.

In DNA, two strands are present in the form of double helix which are held together in position by the help of hydrogen bonding. In DNA, four different nitrogenous bases are found. These are: Adenine, Guanine, Thymine, and Cytosine.

In DNA, each pyrimidine base pairs with a purine and vice versa. Adenine base pairs with thymine with the help of two hydrogen bonds and guanine base pairs with cytosine with the help of three hydrogen bonds.

So, each time an adenine comes opposite to a thymine and vice versa. Similarly, a guanine comes opposite to a cytosine and vice versa. This can be used to derive the sequence of the other strand for the given strand of DNA.

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Answer:

Option a

Explanation:

A eukaroytic cell contains more organelles than prokaryotic cells, and it is much bigger and complex.

hope this helps and is right :)

The choice that identifies the eukaryotic cell for the correct reason would the presence of organelles. The correct option would, therefore, be A.

Eukaryotic cells differ from prokaryotic cells such that:

In the images, the organelles of the eukaryotic cells can be seen while the smaller size of the prokaryotic cell can also be observed.

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Answer:

All organisms are capable of reproduction and development

Answer:

Organs, If thats not correct than cells

Explanation:

Answer:

Potential targets:

1- DNA methyltransferases

2- Chromatin modifiers such as histone acetyltransferases, histone deacetylases, histone methyltransferases, etc.

3- Components of the RNA interference (RNAi) machinery such as Dicer, Argonaute, etc.

Explanation:

Epigenetics can be defined as the study of any heritable change in the phenotype that does not involve modifications in the DNA sequence. Epigenetic mechanisms can be classified into three major types: 1-DNA methylation, 2-histone modifications (e.g., acetylation, methylation, phosphorylation, etc), and 3-regulatory non-coding RNAs (e.g., miRNAs, lncRNAs, siRNAs, etc) that modulate target gene expression via the RNA interference pathway. There are different types of proteins that are involved in these complex epigenetic mechanisms, and those cited above represent only some examples that can be used as therapeutic targets.

Answer:

Explanation:

1. A

2.B

3.A

4.B

5.B

6.A

7.B

8.A

Answer:

anwer is down

Explanation:

A substrate is a molecule that an enzyme reacts with. The enzyme's active site, or the location where weak bonds between the two molecules can form, is loaded with a substrate. An enzyme substrate complex is formed, and the enzyme's pressures on the substrate drive it to react and become the planned reaction's result.

According to the research, the seed was an organ of great importance since it fulfilled the functions of dispersion, protection and reproduction of vascular plants.

In biology, it is the component of that houses the embryo that can lead to a new plant.

The seed appears when an ovule belonging to an angiosperm or a gymnosperm reaches a certain point of maturity.

Therefore, we can conclude that according to the research, the seed was an organ of great importance since it fulfilled the functions of dispersion, protection and reproduction of vascular plants.

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Answer: alligator weed

Explanation:

Answer:

Answer:

flexion is the opposite of dorsiflexion and involves moving the foot in a downward direction, toward the ground. Plantar flexion occurs when the foot is moved downward between 20 and 50 degrees.Aug 14, 2017

Explanation:

dorsiflexion refers to bending of the foot at the ankle or talocrural joint in the direction of teh dorsum. Its opposite movement is plantar flexion

A recipient with type B+ blood can receive blood from donors with type B+ and type O+. Therefore, the following blood types are compatible:

The following blood types are incompatible:

What are the blood types?

Blood types are classifications of blood that depend on the presence or absence of certain proteins on the surface of red blood cells. The most well-known blood type classification system is the ABO system, which categorizes blood into four types: A, B, AB, and O. The presence or absence of the A and B antigens on the surface of red blood cells determines the blood type.

Another important blood type classification system is the Rh system, which is named after the Rhesus monkey. People who have the Rh protein on the surface of their red blood cells are Rh-positive (Rh+), while people who do not have the protein are Rh-negative (Rh-).

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The occipital lobe in the left hemisphere of the brain receives visual information from the  

b. right side of the visual field of both eyes.

This phenomenon is known as contralateral processing, where the left hemisphere receives information from the right side of the body and vice versa. The right visual field is processed by the left occipital lobe, while the left visual field is processed by the right occipital lobe. This is because visual information from each eye is transmitted to both hemispheres of the brain, with each hemisphere processing information from the opposite visual field. The occipital lobe is responsible for processing visual information, such as recognizing shapes, colors, and objects, and creating a coherent visual perception of the environment. Therefore, the left occipital lobe plays a crucial role in the processing of visual information from the right visual field.

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Answer:

Thymine, which is often abbreviated to T or Thy, can also be referred to as 5-methyluracil. It is one of the pyrimidine bases found in the nucleic acid of DNA, along with adenine, guanine and cytosine (A, G and C). These bases are the building blocks of DNA and life form on earth.

Explanation:

can someone help me on my most recent question, its math and its multiple choice

Answer:

Explanation:

It is one of the pyrimidine bases found in the nucleic acid of DNA, along with adenine, guanine and cytosine (A, G and C). These bases are the building blocks of DNA and life form on earth.

Contaminated water is a type of water that is harmful to human beings due to the presence of harmful substances, pollutants, or impurities that make the water unsafe for drinking or other household uses. The characteristics of contaminated water can be identified through various indicators, which can either be physical, biological or chemical.

Physical indicators are visible and may include color, taste, and odor, while biological indicators are not visible and may include bacteria, viruses, and protozoa. Chemical indicators may include heavy metals, pesticides, and organic compounds, among others.

Physical Characteristics: Physical characteristics of contaminated water include cloudy or turbid appearance, unusual taste or odor, or discoloration of the water. The color may range from yellow to brown, blue to green, or even black.

Biological Characteristics: Biological characteristics of contaminated water include the presence of bacteria, viruses, or protozoa. These microorganisms can cause diseases such as diarrhea, typhoid, cholera, and dysentery.

Chemical Characteristics: Chemical characteristics of contaminated water include the presence of heavy metals such as lead, arsenic, or cadmium. Pesticides and fertilizers can also contaminate water and affect human health. Organic compounds like benzene and toluene can also be present in contaminated water, which can lead to health problems such as cancer and nerve damage.

Therefore, it is important to test water sources regularly to identify and monitor any contaminants that may be present. This can help prevent health problems associated with the use of contaminated water.

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Answer:

The correct answer is  D. maintain membrane fluidity through its disruption of fatty acid packing.

Explanation:

Cholesterol is a steroid lipid and is a constituent of biological membranes. It regulates the fluidity of the membrane (so, option C is not correct). Since cell membranes are composed of another type of lipids, the phospholipids, which form a bilayer, cholesterol distributes between the phospholipid tails and avoids these molecules pack each other forming rigid clusters. Thus, the option which better explains the effect is D. maintain membrane fluidity through its disruption of fatty acid packing.

Answer:

organ system

Explanation:

ex: respiratory system ut has several organs that work to help you breathe

Answer:

organ system

Explanation:

An organ system is a group of organs that work together as a biological system to perform one or more functions. Each organ does a particular job in the body, and is made up of distinct tissues.

The triploids can not produce viable gametes,Triploid organisms are normally sterile as their lack of homologous chromosomes prevents  pairing during meiosis.

Although polyploids are common among flora and some fauna, polyploidization often causes reproductive failure.

Triploids, in special , are depicted by the trials of chromosomal pairing and segregation during meiosis, which may cause aneuploid gametes and consequence in sterility.

Thus, option "B" is correct, triploids .

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If greenhouse gas emissions continue on their current course, it is predicted that by 2050, almost one-third of Earth's species of animals and plants will go extinct.

By 2050, it is predicted that more than one-third of all plant and animal species on Earth would have vanished.

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Answer: Posterior HoxA and HoxD genes play important roles in patterning along the proximodistal axis of the forelimb (10–13). They also are required for activating and maintaining Shh expression in the developing forelimb (6, 7). mark brainliest

Explanation:

The Law of Conservation of Energy- best describes a chlorophyll molecule absorbing light and changing it into chemical energy.

What is Law of Conservation of Energy?

According to the principle of energy conservation, energy cannot be created or destroyed. However, it is capable of changing its form. An isolated system's total energy is constant regardless of the types of energy that are present. The law of energy conservation applies to all types of energy forms. The law of conservation of energy basically says that,

"All of the system's energy is conserved in a closed system, also known as an isolated system".

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Explanation:

number 5 is the rough endoplasmic reticulum

Answer: the secondary response to Antigen A is greater because the lymphocytes remember the antigen