Endosysmbiosis is...

A one cell living inside another cell where both benefit.
B. the process where one cell eats another cell and destroys
C. when one cell 'hides' from predators inside another cell
and performs no activities for the cell.

Answer:

protons, neutrons and electrons

Explanation:

Answer:

atoms are made up of three particles: protons, neutrons and electrons!

hope this helps! UwU mark me as the brainliest if you like -w-

Fertilization, the fusion of male and female gametes, has a significant effect on genetic diversity within a species. Each gamete contributes half of the genetic material that will be passed down to the next generation. This process ensures that the offspring has a unique genetic makeup as compared to its parents.

The genes that determine the traits that are inherited from the parents are shuffled in different combinations during fertilization, resulting in different variations of traits in the offspring of a species.Fertilization increases the genetic diversity within a species because it produces offspring that have new gene combinations that were not present in the parents.

This combination of traits can create unique physical and behavioral characteristics that may give the offspring an advantage in adapting to their environment. This genetic variation plays a vital role in the evolutionary process. Some of the offspring will have variations that allow them to better adapt to their environment and have a higher chance of survival, whereas others may have traits that are not advantageous and may not survive to reproduce.

Fertilization plays a critical role in the production of genetically diverse offspring that can help a species to adapt and survive in a constantly changing environment.

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Darwins theory of evolution by national selection

more individuals are produced each generation that can survive. phenotypic variation exists among individuals and variation is heritable

If potassium channels are blocked in an autorhythmic cell, the correct answer is (d) no repolarization.

In autorhythmic cells, potassium channels play a critical role in repolarizing the cell after depolarization. During the pacemaker potential, slow depolarization occurs due to the opening of funny channels and closing of potassium channels. The depolarization then leads to the opening of calcium channels, causing the rapid upstroke of the action potential. After the action potential peaks, potassium channels open, allowing potassium ions to flow out of the cell, which repolarizes the membrane potential back to the pacemaker potential.

If potassium channels are blocked, the cell cannot effectively repolarize after depolarization, which would result in a prolonged depolarization phase and a delay in the next pacemaker potential. This can lead to arrhythmias and other cardiac disorders.

Therefore, the correct option is D.

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Answer:

Explanation:

The steps in the development of neurons must occur in a specific order for the process to be successful. In the first step, stem cells arise from the inner mass of cells. These stem cells are unspecialized cells that have the potential to develop into a wide range of different cell types.

Next, genes that lead to the production of undifferentiated precursor neurons are activated. These genes provide the instructions for the stem cells to begin developing into neurons.

Once the precursor neurons have been produced, signaling factors trigger their differentiation. This means that the precursor neurons become specialized and begin to develop into specific types of neurons.

Finally, signaling factors cause the precursor neurons to produce neurons, completing the development process. This is a critical step because it ensures that the neurons are able to function properly and play their role in the nervous system.

Answer:

A

Explanation:

because each of the nitrogenous bases can only pair up with one of the other bases.

Answer:

Estrogen

Explanation:

The upregulation of FSH receptors within the follicle at the start of the cycle causes an increase in this hormone.

Answer:

like 82-83 years

Explanation:

i hope this helps :)

Answer:

They compare quantities for particular categories.

Explanation:

Quantities- numbers

Bar graphs compare numbers

Hoped this helped!

anser: c 100 on test

Answer:

Anaphase

Explanation:

Falsifiable: The shoreline of Panama gives a magnificent experience, and swimming in warm water is more delightful.

Non-falsifiable: Basalt erodes more slowly than limestone, and algae can develop in tide pools that are shallower.

Falsifiability is the capacity to show that a claim, assertion, theory, or hypothesis is false. The idea of falsifiability states that a scientific hypothesis can only be believed if it can be disproven. This implies that the theory must be able to be disproven by testing. The possibility of the hypothesis being disproved at a later point in time or location does not necessarily imply that it is faulty or inaccurate.

Those hypotheses that are intrinsically impossible to refute due to technical or subjective issues. Confidently stating that a thesis or hypothesis is true or untrue, even when the notion or hypothesis may not be able to be refuted by observation or the results of any physical experiment, is typically proof; non-falsifiability is non-falsifiability without strong or sound reasoning.

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It is a false statement that the egg of a bird represent an organ​.

An organ is composed of many tissues that work together for the same purpose. Tissues in turn are composed of cells.

The egg of a bed is only composed of cells that divide rapidly hence the egg of a bird is not an example of an organ and the statement is false.

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Diploidy is first re-established following fertilization. So, option A is accurate.

Fertilization is the process in which the male and female gametes (sperm and egg) fuse to form a zygote. During fertilization, the haploid sperm and egg combine their genetic material, resulting in the formation of a diploid zygote. The zygote then undergoes subsequent cell divisions and development, giving rise to an embryo with diploid cells. This marks the re-establishment of diploidy, as the embryo inherits a complete set of chromosomes from both parents. The other options mentioned, such as gastrulation (formation of the three primary germ layers), spermatogenesis (formation of sperm cells), and organogenesis (formation of organs), are important processes in embryonic development but do not directly involve the re-establishment of diploidy.

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The complete question is:

FILL THE BLANK.

Diploidy is first re-established following _____. group of answer choices

A) fertilization

B) gastrulation

C) spermatogenesis

D) organogenesis

Conowingo Dam eliminated the access of the American Eel population to 450 miles of the riverine habitat, thereby the removal of this dam might be beneficial for the species.

The Conowingo Dam refers to one of the largest hydroelectric energy plants in the USA (Conowingo city, Maryland).

The American Eel can eat different animals in the riverine habitat such as small fish, crustaceans, shrimp, etc.

In conclusion, Conowingo Dam eliminated the access of the American Eel population to 450 miles of the riverine habitat, thereby the removal of this dam might be beneficial for the species.

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The unicellular organism that has 70s ribosomes and a peptidoglycan cell wall is Bacteria.

The unicellular organism that has 70s ribosomes and a peptidoglycan cell wall would be placed in the bacteria group. Bacteria are prokaryotic organisms characterized by the absence of a nucleus and other membrane-bound organelles. Their genetic material is organized in a single circular chromosome, and they typically have small 70s ribosomes. Bacteria also have a unique cell wall made up of peptidoglycan, a complex molecule that provides structural support and protection to the cell. These features distinguish bacteria from other domains of life such as eukaryotes, which have larger 80s ribosomes and different cell wall components.

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The most common cognitive disturbance in anorexia nervosa is body image distortion.

A distorted sense of one's own body's size, form, or weight is referred to as body image distortion. Even when they are substantially underweight, people with anorexia nervosa frequently have a mistaken perception of their bodies and believe they are heavier or larger than they actually are.

One of the key characteristics of anorexia nervosa is cognitive dysfunction, which can support the emergence and maintenance of disordered eating patterns. It could result in rigid food habits, excessive exercise, and a strong fear of putting on weight.

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In cellular respiration, carbohydrates are broken down into CO2 and water when they combine with atmospheric oxygen.

Cellular respiration is a process that occurs in the cells of all living organisms and is responsible for the production of energy from the breakdown of nutrients. During cellular respiration, glucose and other carbohydrates are oxidized in the presence of oxygen to produce energy in the form of ATP (adenosine triphosphate). The byproducts of this process are CO2 and water, which are released into the environment.

There are several stages of cellular respiration, including glycolysis, the citric acid cycle, and the electron transport chain. These stages involve a series of chemical reactions that convert the energy stored in carbohydrates into a form that cells can use. The energy released during cellular respiration is used to power various cell

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Answer:

Hope it helps

Explanation:

Kingdoms fall under the larger grouping called DOMAINS. There are three domains used in modern classification. The domain EUKARYA is used for all eukaryotic species that include protists, fungi, plants, and animals. The two domains BACTERIA and ARCHEA are used to group two different types of prokaryote organisms.

The most probable precursor of the group found linked to the N-terminus of a Wnt protein is palmitoyl. A palmitoyl group is the most probable precursor of the group found linked to the N-terminus of a Wnt protein.Wnt proteins, a family of cysteine-rich secreted signaling proteins, regulate cell proliferation and differentiation, cell death and survival, and patterning of cell fate.

Palmitoylation is a reversible post-translational modification in which the 16-carbon fatty acid palmitate is covalently bound to cysteine residues in specific proteins, affecting their subcellular localization and function. Palmitoylation also promotes Wnt binding to receptors on the surface of receiving cells.Wnt proteins are lipid-modified by palmitoleate and palmitate, which are both added covalently to the N-terminal cysteine of the mature protein. Palmitoylation of Wnt is required for its secretion, its signaling activity, and its activity in long-range signaling.

Palmitoylation is also necessary for Wnt's ability to activate the Frizzled receptor, which is critical for Wnt-mediated developmental signaling.Answer: The most probable precursor of the group found linked to the N-terminus of a Wnt protein is palmitoyl.

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Answer:

Atoms are the smallest units of matter.

Explanation:

I would suggest using Dalton's laws of matter to help you! These laws include:

1: All matter is made of atoms. Atoms are indivisible and indesctructible

2: All atoms of a given element are identical in mass and properties

3: Compounds are formed by a combination of two or more different kinds of atoms

4: A chemical reaction is a rearrangement of atoms

Hope this helps, have a great day!

Answer:

See below.

What is Photosynthesis?

The word photosynthesis can be separated to make two smaller words:

Plants need food but they do not have to wait on people or animals to provide for them. Most plants are able to make their own food whenever they need it. This is done using light and the process is called photosynthesis.

Photosynthesis is the process by which plants make their own food. We will add more details to this definition after making a few things clear as you will see below

To make food plants need:

Let’s take a look at how these are collected by plants.

Photosynthesis takes place in the leaves of plants. The leaves are made up of very small cells. Inside these cells are tiny structures called chloroplasts. Each chloroplast contains a green chemical called chlorophyll which gives leaves their green color.

Some of the glucose is used to provide energy for the growth and development of plants while the rest is stored in leaves, roots or fruits for later use by plants.

Here is the process in greater detail:

Photosynthesis occurs in two stages commonly known as Light dependent Reactions and the Calvin Cycle.

Light dependent Reactions

Light dependent reactions occur in the thylakoid membrane of the chloroplasts and take place only when light is available. During these reactions light energy is converted to chemical energy.

The Calvin Cycle

The Calvin Cycle reactions occur in the stroma of the chloroplasts. Although these reactions can take place without light, the process requires ATP and NADPH which were created using light in the first stage. Carbon dioxide and energy from ATP along with NADPH are used to form glucose.

What have you learned so far?

You already know that plants need carbon dioxide, waterand sunlight to make their food. You also know that the food they make is called glucose. In addition to glucose, plants also produce oxygen.

The equation below is the same as the one above but it shows the chemical formula for carbon dioxide, water, glucose and oxygen.

Now back to the definition… Earlier you learned that photosynthesis is the process by which plants make their own food. Now that we know what plants need to make food, we can add that information as shown below.

Photosynthesis is the process by which plants make their own food using carbon dioxide, water and sunlight

Why is Photosynthesis Important?

Photosynthesis is important because it provides two main things:

Some of the glucose that plants produce during photosynthesis is stored in fruits and roots. This is why we are able to eat carrots, potatoes, apples, water melons and all the others. These foods provide energy for humans and animals.

Oxygen that is produced during photosynthesis is released into the atmosphere. This oxygen is what we breathe and we cannot live without it.

While it is important that photosynthesis provides food and oxygen, its impact on our daily lives is far more extensive. Photosynthesis is so essential to life on earth that most living organisms, including humans, cannot survive without it.

All of our energy for growth, development and physical activity comes from eating food from plants and animals. Animals obtain energy from eating plants. Plants obtain energy from glucose made during photosynthesis.

Our major sources of energy such as natural gas, coal and oil were made millions of years ago from the remains of dead plants and animals which we already know got their energy from photosynthesis.

Photosynthesis is also responsible for balancing oxygen and carbon dioxide levels in the atmosphere. Plants absorb carbon dioxide from the air and release oxygen during the process of photosynthesis.

Thanks.

Arnie's observation was the ureters run medially for some distance within the posterior bladder wall. Thus the correct answer is option (A).

Urine travels through the ureter, a pair of paired fibromuscular tubes, from the kidneys in the abdomen to the bladder in the pelvis. The medial aspect of the psoas muscle is where the ureter runs as it descends to the bladder. To the tips of the L2-L5 transverse processes, the ureter is located anteriorly and slightly medially in this location.

At the bifurcation of the common iliac vessels (the pelvic brim), it enters the pelvis anterior to the sacroiliac joint. From there, it proceeds anteriorly to the internal iliac artery down the lateral pelvic sidewall. The ureteric orifice opens into the bladder at the internal ureteric orifice at the level of the ischial spine after turning forward and medially to reach the posterolateral wall of the bladder.

The complete question is:

During a dissection, Arnie saw the ureters entering the lateral corners of the bladder but found the internal openings of the ureters in the trigone near the midline of the bladder. His observation necessarily means that

A) the ureters run medially for some distance within the posterior bladder wall.

B) the ureters and urethra are really the same tubes.

C) each ureter must have four distinct openings in the bladder.

D) this bladder had a congenital defect.

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The characteristic of ribose required for the termination of a DNA strand in DNA sequencing is 3'-OH (hydroxyl). So the correct answer is option B.

Ribose is a pentose sugar which is the fundamental building block of nucleotides. The ribose sugar makes up the backbone of RNA, just like deoxyribose in DNA, RNA is synthesized in the 5' → 3' direction. The addition of nucleotides begins at the 3' end and ends at the 5' end, 3' end of the nucleotide contains a hydroxyl group (-OH), whereas the 5' end contains a phosphate group (-PO4). When a dideoxynucleotide triphosphate (ddNTP) is incorporated into the elongating DNA strand, there is no 3'-OH group present in the ddNTP.

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Answer:

A. OCEAN BASIN

Explanation:

The largest feature beneath the earth is the ocean basin. Ocean basin is a large geological basin that is below sea level and located before the trenches. Ocean basin covers three quarters of the earth's surface

The air pressure is increasing from the particles space increasing.

Investing in human capital is the step which a nation can take in other to achieve economic growth.

This is defined as the increase in the production of goods and services of a country over a given period of time and is influenced by different factors such as security, manpower etc.

Economic growth will be achieved if the nation invests in human capital which leads to an increase in employment and man power being involved in different sectors.

It also reduces insecurity in the area due to the citizens being gainfully employed and having a source of income which is why option D was chosen.

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