what are the two major classifications of vascular seed plants?
Answers
The two major classifications of vascular seed plants are Gymnosperms and Angiosperms.
Explanation:
Vascular plants are subdivided into two classes: seedless plants, and seed plants. Seed-producing plants include gymnosperms, which produce “naked” seeds, and angiosperms, which reproduce by flowering.
Related Questions
What kind of pattern is noticed with the structure of DNA?
Answers
Answer:
Double helix
Explanation:
that's the biology in humans
What are some things humans can do to help keep Earth’s carbon cycle in balance?
Answers
How can the Swartz process be modified to work for bacteria? Explain
Answers
Answer:
Explanation: Alkyl chlorides and alkyl bromides are typically transformed into alkyl fluorides in the organic reaction known as the Swarts Reaction.
Swartz reaction?
Frederick Jean Edmond Swarts first reported this procedure in 1892. Heating the alkyl chloride or alkyl bromide in the presence of heavy metal fluorides like AGF, Hg2F2, CoF2, or SbF3 causes this reaction.
Swartz process can be used to modify work for bacteria. Bacterial biofilms are collections of microorganisms where the cells are immersed in an extracellular polymeric matrix that the bacteria have self-produced.
In contrast to planktonic bacteria, which are in a state of free movement in a bulk solution, this situation is very different.
Applications:
In this process, alkyl fluorides are created.
Fluorinated aliphatic organic molecules, or Freons, are produced via a different variation of the same process.
Anhydrous hydrogen fluoride is fluorinated to produce Freons in the presence of antimony salts, which exhibit the oxidation states +3 and +5.
Therefore, Alkyl chlorides and alkyl bromides are typically transformed into alkyl fluorides in the organic reaction known as the Swarts Reaction.
Put the sentences in the correct order from start to finish.
The fish gulps water in its mouth.
The water then goes over the filaments in the gills.
In the gill filaments, dissolved oxygen in the water is exchanged for carbon dioxide in the fish.
This happens through the process of diffusion because gases flow from an area of high concentration to an area of low concentration.
The deoxygenated water passes out of the gills.
Answers
Fishes gulp water in the mouth. The water then goes over the filaments in the gills. In the gill filaments, this dissolved oxygen in the water is exchanged for the carbon dioxide in the fish. This exchange happens through the process of diffusion because the gases can flow from an area of high concentration to an area of low concentration. The deoxygenated water then passes out of the gills.
How does fishes respire in water?
A fish lives in water. It respires through a specialized organ called as gill. A gill is a respiratory organ which many of the aquatic organisms use to extract the dissolved oxygen from water and to excrete the carbon dioxide gas in the water.
Fishes gulp water in the mouth. This water then goes over the filaments in the gills of the fish. In the gill filaments, this dissolved oxygen in the water is then exchanged for the carbon dioxide gas in the fish. This exchange of gases happens through the process of diffusion because the gases can flow from an area of high concentration to an area of their low concentration. The deoxygenated water then passes out of the gills.
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Gerald performed an experiment to determine if photosynthesis was affected by the color of light that a plant received. The data from his experiment are shown in the table below.
Color of Light
Number of plants
Average volume of oxygen produced (mL)
green
4
0.50
orange
4
2.0
blue
4
5.0
Which format should he use to present his data?
bar graph
chart
line graph
pie graph
Answers
I REALLY NEED HELP PLEASE The diagram below shows two different organisms - one that reproduces sexually and one that reproduces asexually. undefined A scientist claims that Animal A has a survival advantage when the environment changes from an ideal environment to a hostile environment. Which of the following is the BEST piece of evidence that supports the scientist's claim? Question 13 options: Animal A has no genetic variation, but stronger organisms will survive in the new environment. Animal A has less genetic variation from sexual reproduction, so some animals will die in the new environment. Animal A reproduces sexually, which always gives it an advantage. Animal A has more genetic variation from sexual reproduction, so some animals will survive in the new environment.
Answers
Animal A has more genetic variation, due to the sexual reproduction, so some animals will survive in the new environment, hence option D is correct.
When the male parent's sperm fertilizes the female parent's egg during sexual reproduction, the result is an offspring that is genetically distinct from both parents.
Genetic variation, or genetic changes between parents and offspring, are a byproduct of sexual reproduction. Each parent passes one set of chromosomes to their offspring. Consequently, a child inherits chromosomes (and alleles) from both of its parents.
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The cosmetologist must receive _____ instruction in order to properly perform extraction of clogged pores and comedones.
Answers
Cosmetologist should get hands on instruction in order to properly perform extraction of clogged pores and comedones.
Because providing skin care requires knowledge of facials, cosmetologists should study this subject.services assist consumers in unwinding, and having a fundamental understanding of skin care will let you to give guidance.Knowing the fundamentals will enable you to identify situations where a prescription may be necessary when requested.
understanding the fundamentals will enable you to provide the foundational services in medical care, andYou might find it so enjoyable that you decide to focus on skin care.The most crucial component of facial treatment is skin analysis, which establishes the skin type,ailment, and suggested medical care.
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is the net movement of particles from an area where there are many particles of the substance to an area where there are fewer particles of the substance.
Answers
Yes, that is correct. The net movement of particles from an area of high concentration to an area of low concentration is known as diffusion.
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Mutations are most directly caused by changes in the
Answers
Answer:
Explanation:
Mutations involve changes in the arrangement of the bases that make up a gene. Even a change in just one base among the thousands of bases that make up a gene can have a major effect. A gene mutation can affect the cell in many ways.
Answer:
Gene
Explanation:
mutation is caused by a change in the gene formation
What is the answer to this?
Answers
Answer:
Ribosomes
Explanation:
I hated this topic in science, until my teacher talked about it with me in 6th grade. we heavily discussed each organelle, and I am almost POSITIVE that this fits the category of Ribosomes. I hope this helped! stay safe and keep learning!
Please match the correct term to it definition
Answers
Answer:
Explanation:
1: Is symbiosis
2: is eutrophication
3: Predation
4: Trophic efficiency
5: Greenhouse effect
6: Nutrient cycling
Hope this helps!
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Where would arterial plaque accumulate in an artery?
A.) Along the connective tissue layer
B.) Along the muscular tissue layer
C.) Along the tunica intima
D.) Along the tunica externa
Answers
Answer:
may be here u find ur answer
The arthropods with three body sections, three pairs of legs, and one or two pairs of wings are the
Answers
Answer:
Insects
Explanation:
Insects are arthropods that have three body segments, three pairs of legs, one pair of antennae, and many have one or two pairs of wings. The three body sections are called the head, the thorax, and the abdomen. Wings and legs are attached to the thorax, the middle section.
Answer:
incet
Explanation:
What is the meaning of prometaphase?
Answers
Prometaphase is the second stage in the cell cycle during the process of mitosis.
Mitosis is the process by which a single cell divides to form two identical daughter cells. Prometaphase is a step within mitosis. It occurs after prophase and before metaphase. During prometaphase, the nuclear envelope begins to break down, and the microtubules of the mitotic spindle attach to the chromosomes at their kinetochores. This allows for the proper alignment and separation of the chromosomes during metaphase and anaphase. Prometaphase is an important step in ensuring that each daughter cell receives the correct number of chromosomes during cell division.
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Who are some black scientists?
Answers
Some other famous black scientists like:
Dr. Marshall Shepherd, meteorologist and climatologist.Dr. Shirley Ann Jackson, physicist.Dr. Ayanna Howard, robot engineer.Dr. Beth A. Brown, astrophysicist. Dr. Christine Darden, aerospace engineer. ➥ I hope I have helped you, greetings! Atte: ღTheGirlSadღDr. Marshall Shepherd, meteorologist and climatologist.
Dr. Shirley Ann Jackson, physicist.
Dr. Ayanna Howard, robot engineer.
Dr. Beth A. Brown, astrophysicist.
Dr. Christine Darden, aerospace engineer.
if you were to divide a human head into equal parts using a frontal plane and a transverse plane, how and where would it be divided?
Answers
If we divided a human head into equal parts using a frontal and a transverse section, it would be divided into four parts, divided vertically into anterior and posterior portions, and horizontally at the top of the ears.
The body's four major anatomical planes are the median, sagittal, frontal, and transverse. The frontal plane, also known as the coronal plane, is a longitudinal line that divides the human body into two halves: dorsal (back) and ventral (belly or front). This plane is used on both animals and humans, and it is distinguished by its transection at both shoulders.
The coronal plane (frontal or Y-X plane) divides the body into dorsal (back) and ventral (front) sections. It also divides the anterior and posterior parts. The superior and inferior bodies are divided by the transverse plane (axial or X-Z plane). The superior and inferior (head and tail) portions of the body are divided by the transverse plane (axial or X-Z plane).
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What if the SHH you are making needs to be accumulated in the cell so that it can be released all at once into the extracellular space at a specific time? How would you store the produced SHH? What would need to occur to release all of the SHH from storage into the extracellular space?
Answers
If SHH is to be accumulated and then released into cellular space at a specific time, it would be necessary to establish storage mechanisms and release mechanisms.
To store the produced SHH would require specialized cellular compartments.
To release all of the stored SHH, a signal or stimulus would need to trigger the release of SHH from storage into the extracellular space.
What steps would the SHH storage and release process take place?SHH production.Storage.Storage regulation.Production of the SHH release signal.SHH release.SHH is a protein that is stored within the cell and is released into the extracellular space in times of need. These processes need to work in a very regulated way in order to achieve their objectives. For this reason, well-regulated and optimized storage and release mechanisms are needed.
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Please help me quickly ill give brainlest
Answers
Answer:
kinda blurry so I hope I answered everything correctly!
A. The Linear equation would be x + y = 50
B. Ted spends 35 minutes practicing the breaststroke every day.
Ted spends 50 minutes every day swimming so x +y = 50 (let us say x is butterfly stroke and y is breaststroke). Since he practices the breaststroke for 20 more minutes than the butterfly stroke we have:
2x + 20 = 50
2x = 50 - 20
2x = 30
x =30 / 2
x = 15
y = 15 + 20 =35 minutes
C. No, it is not possible for Ted to have spent 45 minutes practicing the butterfly stroke every day because of the time constraint.
Plase help and thanks.
Answers
The equations represent chemical reactions that take place in living organisms.Which reaction releases the greatest amount of energy? *
carbon dioxide + water → glucose + oxygen
glucose + oxygen → carbon dioxide + water
glucose → alcohol + carbon dioxide
glucose → lactic acid
Answers
Answer:
second one
Explanation:
the second one is aerobic respiration which creates alot of energy
element or compound that enters into a chemical reaction
Answers
In a chemical reaction, there are typically two or more elements or compounds that react with each other to form new substances. These substances are known as the reactants.
The reactants can be in solid, liquid, or gas form and may include elements such as oxygen, hydrogen, carbon, and nitrogen, as well as compounds such as water, ammonia, and carbon dioxide. During a chemical reaction, the atoms of the reactants rearrange themselves and bond to form new substances known as products. The type of chemical reaction that occurs depends on the properties of the reactants, including their reactivity, polarity, and electronegativity. Chemical reactions can be classified into several categories, including synthesis, decomposition, single displacement, double displacement, combustion, and oxidation-reduction reactions. Understanding the elements and compounds involved in chemical reactions is essential for predicting the outcomes of experiments and developing new products and technologies.
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complete question:
What are the elements or compounds that enter into a chemical reaction?
In a chemical reaction, there are typically two or more elements or compounds that react with each other to form new substances. These substances are known as the reactants.
The reactants can be in solid, liquid, or gas form and may include elements such as oxygen, hydrogen, carbon, and nitrogen, as well as compounds such as water, ammonia, and carbon dioxide. During a chemical reaction, the atoms of the reactants rearrange themselves and bond to form new substances known as products. The type of chemical reaction that occurs depends on the properties of the reactants, including their reactivity, polarity, and electronegativity. Chemical reactions can be classified into several categories, including synthesis, decomposition, single displacement, double displacement, combustion, and oxidation-reduction reactions. Understanding the elements and compounds involved in chemical reactions is essential for predicting the outcomes of experiments and developing new products and technologies.
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complete question:
What are the elements or compounds that enter into a chemical reaction?
what is the major underlying principle of chromatography? separation will be achieved if one component adheres to the stationary phase more than the other component does. the stationary phase will always be more polar than the mobile phase. high compound concentration facilitates visualization. if the concentration of the component is too high, the spot will become a smear. the solvent moves by capillary action.
Answers
Chromatography relies on differential adhesion between components to separate them based on their affinity for the stationary and mobile phases. To avoid smearing, it's important to maintain an appropriate compound concentration.
The major underlying principle of chromatography is based on the separation of components in a mixture based on their differential affinities for the stationary and mobile phases. This separation is achieved through the process of capillary action, whereby the solvent moves through the stationary phase due to the attraction between the solvent and the stationary phase. The stationary phase is usually more polar than the mobile phase, which allows for the differential adsorption of the components based on their polarities. As a result, the component that adheres more strongly to the stationary phase will be retained, while the other components will move more quickly through the column. The degree of separation will depend on the specific properties of the components and the stationary and mobile phases. However, it is important to note that high compound concentration can sometimes lead to a smeared spot, which can affect the accuracy of the separation.
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4. The diagram above shows the repeating groups of atoms that make up two samples. Both samples are gases at room temperature. Will the other properties of the samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)
Answers
Answer:
Both samples will be different
Explanation:
Because having different amounts of atoms will make a big impact
Proteins play key roles in olfaction. One kind of protein, called ___________, attaches itself to hydrophobic odorant molecules so that they may dissolve in watery mucous. A second class of proteins, to which odorant molecules become bound and initiate transduction, are coded by the largest family of genes in mammals and are called ___________ . Group of answer choices
Answers
Answer:
The correct answer is "Odorant-binding proteins (OBPs); Olfactory receptors (ORs)".
Explanation:
Odorant-binding proteins (OBPs) are low-molecular soluble molecules that are secreted in high amounts in the nasal mucus layer. The precise biological activity of OBPs remains unclear, however, its solubility and ability to attach to hydrophobic odorant molecules suggest that they acts as carriers. A second class of proteins called olfactory receptors (ORs), act at the genetic level by initiating transduction once odorant molecules attach to them. ORs are coded by the largest family of genes, which include more than 100 genes and pseudogenes that represent around 3% of the genome.
Review the section "Investigating Life: Clues to the Origin of Language." Scientists found that FOXP2 codes for a transcription factor,
which is a protein that helps regulate the expression of other genes in eukaryotes. Label the components of the transcription Initiation
complex in the figure below by dragging and dropping labels to the correct answer boxes. Some labels will not be used
Answers
The punctuated line should be filled with the word 'messenger RNA' (mRNA). It is the final product of gene transcription.
What is gene transcription?Gene transcription is the cellular process by which a fragment of DNA called gene is used as a template to create a complementary RNA molecule called messenger RNA (mRNA).
Subsequently, this mRNA travels to the ribosomes where it is used as a template to generate a protein by a process called translation.
In eukaryotes, gene transcription is a complex process that involves different types of enzymes (e.g., RNA polymerase II to add specific nucleotides).
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What is the last step of any spill cleanup procedure.
Answers
Given what we know, we can confirm that the last step in any spill cleanup procedure is to wipe down that area and correctly disinfect all surfaces.
Why is this important?This is important in terms of lab safety. A spill in a lab may at times include dangerous substances such as forms of acid. Alternatively, it can include substances that create a medium for bacteria to grow.For these reasons, it is important to completely wipe up the spill and disinfect the area.Therefore, we can confirm that for any spill cleanup procedure, the last step and the most important one should be to completely wipe up all spillage and disinfect all surfaces.
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The number of fatty acids chains present in a molecule of a
phospholipid is _
Answers
The molecule of phospholipid contains two fatty acid molecules linked to -OH groups and a nitrogen-containing base bound to the phosphate group.
Phospholipids are a class of lipids whose molecule has a hydrophilic head containing a phosphate group and two hydrophobic tails derived from fatty acids, joined by an alcohol residue.
Thus, it has a strongly non-polar and hydrophobic tail consisting of fatty acid chains and a polar and hydrophilic head comprising a negatively charged phosphate group and a positively charged base. Because of this dual solubility, the phospholipids are called AMPHIPHATIC lipids.
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Why is CO2 important?
Answers
Carbon dioxide is an important greenhouse gas that helps to trap heat in our atmosphere. Without it, Earth would be cold
What role do lichens and
mosses play in succession?
A. They provide the seeds for large trees to
grow.
B. They provide food for carnivores to eat.
C. They help break down rocks and create
soil for new species.
D. They allow water to enter the ecosystem
Answers
Answer:
C is da answer
Explanation:
I hope this help you have a wonderful day!
Who is the ceo of apple
Answers
Answer:
Tim Cook used to be Steve Jobs
Explanation:
(If you mean the tech company Apple)