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Answer:

Narrow leaves still do their job well because narrow leaves are very thin so gases can get to every cell.

Bryophytes are plants that lack vascular tissue and grow close to the ground.

Pollen and seed were novel structures that enabled seed plants to overcome their need on water for reproduction and embryo development and conquer dry land. The pollen grains are male gametophytes that contain the plant's sperm (gametes).

Except for fungi, mammals, and land plants, all eukaryotes are protists. Green algal lineages are thought to be the most closely related to terrestrial plants. 'In one aspect, ferns and mosses are similar. Both reproduce by spores rather than seeds.

Ferns, on the other hand, vary from mosses in that they have vascular tissue. The vascular tissue found in seedless vascular plants such as ferns.

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Answer:

Contact metamorphism.

Endospores bacteria are exposed to nutrient-poor conditions, they form thick-walled structures that contain the chromosome and a small amount of cytoplasm.

As their environment changes, microorganisms are able to detect it and adjust. When desired nutrients are no longer available, some bacteria may become mobile in search of nutrition or they may create enzymes to take use of substitute resources. Endospore production is one illustration of a drastic survival tactic used by some low G+C Gram-positive bacteria. When an organism lacks nutrients, this intricate developmental process frequently starts. It enables the bacterium to create a latent and incredibly resilient cell to protect the cell's genetic material under extremely stressful conditions.

Endospores are able to withstand environmental stresses that would typically kill the bacterium. Among these challenges include extreme heat, intense UV radiation, desiccation, chemical harm, and enzymes deterioration. Endospores hold a special place in biology because to their exceptional resistance capabilities.

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Answer:

Active transport requires energy because substance move from low concentration to a high concentration. (Going against the concentration gradient)

Example:

For example, in the root hair cell minerals and ions are absorbed into the plant by active transport and you will find a lot of mitochondria in the root hair cell. So, it can supply the cell energy by aerobic respiration to undertake active transport.

DNA nucleotides come in four different varieties since there are four naturally occurring nitrogenous bases : adenine (A), thymine (T), guanine (G), and cytosine (C)  =  −15

A single, continuous molecule of nucleic acid or protein makes up a biological sequence.

The basic structure of a biological macromolecule, also known as the sequence, is the covalently connected, one-dimensional ordering of monomers inside a biopolymer. The phrase "sequence" can apply to a variety of substances, although it is most frequently used to describe a DNA sequence.

It can be compared to a class hierarchy with multiple inheritance. The underlying molecule type, such as DNA, RNA, or protein, is one hierarchy.

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The process by which plants capture light energy and use it to synthesize glucose and other organic molecules is called photosynthesis.

Photosynthesis is defined as the process through which plants convert carbon dioxide, water, and sunshine into oxygen and sugar for energy.

It is defined as a mechanism by which phototrophs transform light energy into chemical energy, which is subsequently used to power cellular processes.

It can also be defined as a method used by plants and other living things to change light energy into chemical energy that can then be released through cellular respiration to power the organism's activities.

It is important because photosynthesis is the method used by plants to convert carbon dioxide into oxygen with the help of sunlight, it is crucial.

Thus, the process by which plants capture light energy and use it to synthesize glucose and other organic molecules is called photosynthesis.

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• Integration of the stem with the surrounding bone would be desirable, as it would better fix the implant into the surrounding tissue.

• Integration at the joint space would be undesirable, as it could impart movement.

What is femoral stem?

The load-bearing section of the implant is the femoral stem component, which replaces a sizable piece of the femur's bone. It must have a Young's Modulus similar to cortical bone's in order to support this load.

Despite the fact that hydroxyapatite ceramics make up 70% of bone mass, these materials are far too brittle to be used for femoral stem replacements. Polymers are also inappropriate because of their propensity for creep and fatigue.

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The main contributors to protein intake in the us is/are: meats and dairy.

Complete proteins, or those that include all of the essential amino acids our bodies require, are found in animal proteins like meat, eggs, and milk. The best sources of protein are those found in animal products.

Dairy products like milk, cheese, and yogurt are not only great sources of protein, but they are also rich in essential minerals like calcium and vitamin D. The two main proteins in milk are casein and whey protein. In bovine milk, casein makes up around 80% (29.5 g/L) of the total protein, while whey protein makes up about 20% (6.3 g/L).

Therefore, the main contributors to protein intake in the us is/are: meats and dairy.

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A theory should be supported by evidence because it is an explanation of existing patterns of phenomena that are accepted by many scientists. It will remain a theory instead of becoming a fact when there are evidences that do not support the idea of the theory.

So the answer to this question may be B.

Answer:

C. Proteins

Explanation:

Fats oil and and waxes are lipids

Proteins are made up of amino acids. The correct answer is option C.

Bio molecules are the biological molecules that are comprised of molecules which are chemical in nature where the biological function is performed by these molecules. The basic constituents of these molecules are C,H and O.

Proteins are formed by amino acids which has one amine group along with carboxylic acid. This is why amino acid has the dual nature of both acid as well as a base and the amino acids are the major constituents of proteins.

Proteins basically are peptide molecules in which there is chain of amino acids in which they form a functional molecule. There are 20 amino acids that are called as essential amino acids.

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Answer: This can decrease our resources

Explanation: Since there are more people in the population that's going to take up more resources for more houses food and buildings.

The treaty on plant genetic resources is limited because it focuses on the work on loss of biodiversity and management of genetic resources and neglects other areas such as habitat loss and is therefore denoted as option D.

A treaty is referred to as a written agreement between two nations or parties which is binded by the international law. This has to be adhered to strictly to avoid punishments and other consequences.

The treaty on plant genetic resources is limited to work on loss of biodiversity and management of genetic resources and neglects loss of habitat which is a big factor in the availability of plant genetic resources.

This however makes the treaty less impactful and is therefore the reason why option D was chosen as the correct choice.

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The options are:

A. It neglects the loss of biodiversity

B. It excludes the use of seed banks

C. It excludes countries other than the United States.

D. It neglects the loss of habitat

To improve our fitness, we must 'overload' our body systems. To improve our aerobic fitness, for example, we must 'overload' the cardiorespiratory system, or make it work harder than usual.

To accomplish this, increase the frequency, intensity, or length of exercise to create an overload. The highest quantity of oxygen that an individual can use during intensive or maximal exertion is referred to as VO2 max, or maximal oxygen consumption. This assessment is often regarded as the most accurate predictor of cardiovascular fitness and aerobic endurance. A strength-training principle is progressive overload. The primary idea is to gradually increase the difficulty of your workouts in order to put more strain on your musculoskeletal and nervous systems.

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Breaths > Deaths is the population's genuine ratio.

The total population or people of a nation or region. b: the entire number of people occupying a space or constituting a whole. c: the overall number of particle at a specific level of energy, particularly when referring to particles in a laser.

A collection of creatures of the same species that coexist and breed in the same location at the same (e.g., human population, the population of apple trees, total population of deer in a forest). It is a percentage of a species' total population that lives in a particular area of the world.

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Answer:

Cell membrane

Explanation:

The cell membrane is the outer lining of the cell which allows materials to enter and leave the cell.

A good reason to use simulation in an experiment is that it can replicate any type of environment required for the analysis of an experiment.

When it comes to engrossing learners and imparting knowledge of how to carry out activities, procedures, or processes, simulation training is incredibly effective. Performing an experiment requires vital conditions of environment that can be replicated by simulation.

Through simulation, students can practice risky situations that would otherwise be impossible to replicate in the actual world. It proves to be cost-effective.

Simulation offers a technique to duplicate any environment, device, machine, or task, from heavy machinery to healthcare. In comparison to conventional training methods, simulation aids in learning and memory.

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Answer:

They have an independent structure

The statement that is true of a typical animal is they lack a cell wall. The correct option is c.

The cell wall, which is located next to the cell membrane, also known as the plasma membrane, is the outer layer of a cell. As was already mentioned, all plant cells as well as those of fungi, bacteria, algae, and some archaea contain a cell wall.

All animals have multicellular cells, which make up an animal cell. Animal cells are distinguished primarily by the absence of a cell wall.

Animal cells lack elements like vacuole and chloroplast that are found in plant cells. Animal cells contain cell organelles like mitochondria, endoplasmic reticulum, ribosomes, and nuclei, which house the animal's genetic material.

Therefore, the correct option is c. They lack a cell wall.

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Ribosomes are involved in some way in building proteins.They consist of two subunits and are found either lodged in the endoplasmic reticulum or floating freely in the cytoplasm of the cell.

The cell's protein producers are called ribosomes. The ribosome, which translates the genetic code generated in mRNA into an amino acid sequence, is universally responsible for protein synthesis. Ribosome structure and basic elements. About two times as big as the tiny subunit is the large subunit. Decoding the message and creating peptide bonds are the two main jobs of ribosomes. The ribosomal subunits are two big, unequal-sized ribonucleoprotein particles (RNPs) that carry out these two functions. There are many ribosomal proteins and one or more ribosomal RNAs (rRNAs) in each subunit (r-proteins).

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Steps in Cellular Respiration are as follows 2-1-3-5-4

Cellular respiratory is the process by way of which organic fuels are oxidized within the presence of an inorganic electron acceptor inclusive of oxygen to supply huge amounts of electricity, to drive the majority production of ATP.

It's far a chemical system wherein oxygen is used to make electricity from carbohydrates and sugars. also referred to as aerobic metabolism, aerobic respiration, and unicellular respiration works either inside the presence or absence of oxygen. however, basically, the method is called cell respiration because the cellular appears to “respire” in a manner that it takes in molecular oxygen and releases carbon dioxide as a cease product.

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An argument that supports Shawna’s perspective in the following scenario is that it constructs a calf's life basis throughout the first trimester as the baby's growth is particularly important throughout the first trimester in cattle gestation.

The physical structure and organ systems of your baby grow throughout the first semester. This time period sees the majority of miscarriages and birth abnormalities. The placenta develops and houses the fetus for the rest of the pregnancy, providing it protection until complete growth. The first trimester is a time of significant physical change for your body. So, Shawna is correct as she points the first trimester is the most crucial pregnancy period.

Cows must be in excellent health before calving since the third trimester is the last stage of calf development. The third trimester and a large increase in nutritional needs begin for many spring-calving herds in late fall or early winter. So, the third trimester is not at all critical as stated by Mason.

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A pluripotent embryonic stem cell's detrimental mutation has the most impact on the body.

embryonic stem cells with pluripotency:

within an embryo

is charge of organ development.

An unhealthy mutation will lead to an organ development problem.

The infant can pass away.

Adult stem cells with pluripotency:

found in adults

responsible for less cell growth.

Defects brought on by deleterious mutation may be fixed.

As a result, we may infer that a pluripotent embryonic stem cell's detrimental mutation has the largest impact on the body.

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The archaeal lipid showed here different from phosphatidylglycerol as stable ether bonds join the chains to the glycerol backbone at the SN-2 and SN-3 positions. L-glycerol-3 phosphate serves as phosphatidylglycerol's structural base.

Ester bonds hold the fatty acyl tails of phosphatidylglycerol to the glycerol backbone. Bacteria and Eukarya synthesize membrane lipids with hydrophobic fatty acid tails that are ester-bound to glycerol-3-phosphate (G3P), whereas Archaea create membrane lipids with hydrophobic isoprenoid lipid tails that are ether-linked to glycerol-1-phosphate (G1P) with the opposite chirality.

While bacteria and eubacteria create membranes made of fatty acids ester-bound to glycerol-3-phosphate, archaea manufacture isoprenoid lipids that are ether-linked to glycerol-1-phosphate (G1P) instead (G3P). The lipid makeup of bacterial and archaeal cell membranes and the properties of their cell walls are different from one another.

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The statement that describes how the above labeled organelles interact within a cell are option C. #4 provides instructions for making proteins and #2 site of protein synthesis.

Through MCSs, a lot of organelles are in close contact with one another. The most common theory is that these contact sites form as a result of membrane proteins acting as points on the contacting organelles.

Note that Organelles communicate with one another and MCSs are locations where two or more organelles are very  close to one another and pass metabolites, and proteins in a lot of ways.

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Red blood cells and the endothelial cells that line blood vessels do not interact, hence option b is correct. This is how vascular endothelial cells interact with one another.

The most prevalent form of cell in blood are red blood cells, commonly known as endothelial cells. White blood cells, platelets, and plasma are further important blood constituents.

the kind of endothelial cells that coats lymphatic and red blood cells ; these cells are typically squamous (flattened) and form sheets that are one layer thick. Embryonic mesenchyme cells give rise to endothelial cells. The term "endothelium" refers to a layer of endothelial cells.

Abstract The inner cellular lining of arteries, veins, and capillaries is made up of a monolayer of endothelial cells (EC), which puts the vascular endothelium in direct contact with the cells and components.

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Straight-arm lateral raises and lateral leg raises, which include the abduction of the shoulder and hip, respectively, are the best illustrations of frontal plane movements.

Abduction is the movement of the hands from the side of the body up to the shoulder or higher. Abduction causes the fingers and toes to extend out from the hand's or foot's centerline.

To perform a shoulder abduction, stand with your palm towards your body while holding a weight in each hand. Thumb pointing up, slowly raise your arm to the side. Then extend your arm as high over your head as you can without experiencing pain.

An illustration of a multiplanar/triaxial joint is the shoulder joint. The sagittal plane can be moved forward and backward, the frontal plane can be moved laterally, and the transverse plane can be rotated both internally and externally.

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Answer:

microorganisms live in water and cause fish, land animals and humans to become ill. 

EXPLANATION: A quasi-experimental research is not true experimental research because instead of assigning participants randomly in either the control group or treatment group, it is pre-determined. The control and treatment groups also have different conditions and variables being tested that the researchers themselves do not have control over. This type of experiment is often conducted in research in educational settings.

ANSWER: A. assignment to groups based on some pre-determined characteristic

The represented table is about the muscles, the proper working of the muscles, their structure as well as the types of the muscles.

Muscles has been defined as an action potential travels along the nerves to the muscle. The beginning of the muscle contraction occurs with the signal generated from the nervous system.

There are mainly two types of muscle contraction and the situation has been occur when the muscle has been contracted and a change in the size takes place. Isotonic concentric contraction has the type of muscle contraction in which muscle has been shortening takes place.

Therefore, The represented table is about the muscles, the proper working of the muscles, their structure as well as the types of the muscles.

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