Help me pleaseeee!!???
Answer:
it A
Explanation:
pick A hopefully it right
Which type of plant existed the longest in earth history, ferns, gymnosperms, or angiosperms?
I'm giving a lot of points for this and I will also give brainliest if its detailed and well explained! ^^
Explanation:
The evolution of plants has resulted in a wide range of complexity, from the earliest algal mats, through multicellular marine and freshwater green algae, terrestrial bryophytes, lycopods and ferns, to the complex gymnosperms and angiosperms (flowering plants) of today. While many of the earliest groups continue to thrive, as exemplified by red and green algae in marine environments, more recently derived groups have displaced previously ecologically dominant ones; for example, the ascendance of flowering plants over gymnosperms in terrestrial environments.
There is evidence that cyanobacteria and multicellular photosynthetic eukaryotes lived in freshwater communities on land as early as 1 billion years ago, and that communities of complex, multicellular photosynthesizing organisms existed on land in the late Precambrian, around 850 million years ago.
From what sources does water evaporate?
Answer:
from precipitation, oceans lakes streams and soil
Which phases of the cell cycle are included in interphase? Check all that apply.
G1 phase
S phase
G2 phase
mitosis
cell division
Answer:
Interphase is the longest stage of the cell cycle and can be divided into 3 phases: G1 phase, S phase, G2 phase. The newly formed cell matures during the G1 phase. If the cell is going to divide, it enters the S (synthesis) phase where the DNA is replicated and the G2 phase where more growth occurs.
The interface is the first phase of the cell cycle during which the cell grows to its adequate level to start the duplication of its genetic material, the phases included in interphase are:
G1 phase.The cell physically grows, duplicating its organelles and the proteins needed for subsequent stages.
S phase.A complete copy of the cell's DNA is synthesized, as well as a duplicate of the centrosome, which will help separate the DNA in later stages.
G2 phase.The cell grows even larger, generates new proteins and organelles, and prepares for mitosis, cell division.
Therefore, we can conclude that the interface comprises the G1-S-G2 stages, and during them it grows to its proper level to start the duplication of its genetic material.
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“Some viruses are programmed to reproduce by identifying bacteria, killing them, and assembling new viruses.viruses do not eat the bacteria and do not grow after they are made. Viruses are not alive. Explain two reasons why.”
Which of the following is the region of the thoracic cavity where the heart is located? Multiple Choice a) Mediastinum. b) Pleura. c) Hypogastric region. d) Pericardial region.
The region of the thoracic cavity where the heart is located is the mediastinum.
The mediastinum is the central region of the thoracic cavity, between the two lungs, that contains the heart, thymus gland, and other structures. It is bordered by the pleura, which are the membranes that line the lungs and chest cavity, and the pericardial region, which is the area surrounding the heart.
The thoracic cavity is divided into different regions. The mediastinum is the central compartment of the thoracic cavity, which contains the heart, great vessels, trachea, and esophagus. The pleura is the membrane that surrounds the lungs, the hypogastric region is a part of the abdomen, and the pericardial region refers to the area around the heart but not the region within the thoracic cavity where the heart is located.
The correct answer to your question is a) Mediastinum, as it is the region within the thoracic cavity where the heart is situated.
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when f conjugation occurs successfully, only one copy of the f plasmid single-stranded dna is transferred. what else must minimally occur? when f conjugation occurs successfully, only one copy of the f plasmid single-stranded dna is transferred. what else must minimally occur? rolling circle replication in the recipient cell circularization plus replication of the new recipient dna continuation of rolling circle replication in the donor cell and replication in the recipient cell circularization of the recipient's new dna stopping the rolling circle replication after one copy length, circularization, and replication
The minimum occurrence after one copy of F plasmid single-stranded DNA is transferred in successful F conjugation is: stopping the rolling circle replication after one copy length, circularization, and replication.
Conjugation is the process of transfer of genetic material from one organism to another by establishing direct contact between them. The organism that transfers the genetic material is called donor while the organism that receives is called recipient.
Rolling circle replication is the process where unidirectional replication of DNA occurs and multiple copies are synthesized at once. This method of replication can be seen in the genome of viruses and bacterial plasmids.
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how can the net force of an object be zero
Answer:
When the obect is in equilibrum the net force of an object be zero.
Explanation:
Brainliest please.
Necesito ayuda para balancear la ecuación Al + O2➡️ Al2O3
male ants still produce sperm through meiotic cell divisions. given their cells are haploid at the start, which stage of meiosis is likely to be unnecessary for the formation of their gametes?
Male ants cells are haploids that can produce sperm by foregoing the first meiotic division and formulating two sperm cells through the second meiosis.
In the Hymenoptera (bees, wasps, and ants), uninoculated embryos being haploid establish into males, whereas fertilized eggs, being diploid, establish into females.
To produce gametes, meiosis I and meiosis II are required. Meiosis I is a distinct cell division that takes place only in germ cells; meiosis II is comparable to a mitotic division.
Meiosis, a form of cellular division that decreases the number of genetic material in a parent diploid cell by half, produces haploid gametes. Some organisms, like algae, have haploid segments of their entire lifecycle. Other organisms, such as male ants, live their entire lives as haploid organisms.
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Where do living things get their traits?
Answer:
genes containing dna.
Explanation:
during reproduction genes containing dna, are passed along to an organisms offspring. these genes ensure that the offspring will belong to the same species.
in a flower sperm is made by the filament pistil ovary or anther
Answer:
It is the anther.
Explanation:
The anther is comparable to the make testis. These give rise tomale sperm cells.
Although punishment is not usually used to modify behaviour, there are six proposed rules that should be followed in order to ensure its effectiveness. List and briefly explain these six rules.
Include athletes in the process of defining team rules and penalties, according to six standards for punishment. 2. Apply sanctions consistently. 3. Punish the conduct rather than the offender. 4. Whenever possible, avoid using punishment such as physical exertion. 5. Check to see that the penalty is not interpreted as a reward or as attention alone. 6. Apply sanctions in an impersonal manner.
Describe impersonal behavior.A sort of punishment known as impersonal punishment is one that is applied to the entire group rather than a specific member. It can be used in sports to penalize an entire team for the behavior of one or a small number of players. For instance, if one player on a team fouls, the whole team can be required to run extra laps or do extra drills after practice. The goal of this kind of discipline is to motivate athletes to keep one another accountable and function as a unit.
There are nine rules for punishment that should be followed to ensure its effectiveness, according to an article on Passionate Coach1. Six of them are as follows:
1. Involve athletes in developing team rules and penalties: This indicates that the athletes should be involved in formulating the rules and penalties for which they will be held responsible. This makes sure that everyone is aware of expectations and is on the same page.
2. Apply punishment consistently: When it comes to discipline, consistency is essential. Athletes may not take your penalties seriously or feel like they are being treated unfairly if you are inconsistent with them.
3. Punish the behavior, not the individual: It's critical to keep in mind that you are punishing the behavior, not the individual. This means that you ought to refrain from insulting the athlete personally or launching personal assaults.
4. Avoid using physical punishment as often as you can. Physical punishment can backfire and increase the risk of injury or resentment.
5. Watch out for the punishment being seen as a reward or attention-seeking: The punishment should be seen as a result of bad behavior, not as a way to get attention.
6. Impose discipline in an impersonal manner: It's crucial to avoid punishing specific players in front of their teammates. Punishment ought to be administered objectively and without prejudice.
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Which explanations best explain the data? Check all that apply. The genes for eye color and body color are located on the same chromosome. The genes for wing shape and body color are located on the same chromosome. The genes for eye color and wing shape are on different chromosomes.
Answer:
In the given case, the explanations best explain the data -
The genes for wing shape and body color are located on the same chromosome.
The genes for eye color and wing shape are on different chromosomes.
Dihybrid traits
A dihybrid cross describes a mating experiment between two organisms that are identically hybrid for two traits.
A hybrid organism is one that is heterozygous, which means that is carries two different alleles at a particular genetic position, or locus.
different traits tend to be inherited together when dihybrids for these traits are crossed if these are located on the same chromosome.
In the given case, the explanations best explain the data -
The genes for wing shape and body color are located on the same chromosome.
The genes for eye color and wing shape are on different chromosomes.
Explanation:Hope this helps (^-^)
Answer:
b & c
Explanation:
why environmental health is a community issue
Answer:
Explanation:
because the environment reflects the people if the environment is sickly then 9 times out of 10 the people are sickly
What separates the dorsal cavity into two subdivisions.
Answer:
The skull
Explanation:
The skull separates the cranial cavity and the vertebral cavity, which contain the brain and spine respectively.
if the diet is lacking an essential amino acid, what will be the course of action? a. body cells will synthesize it b. protein synthesis will be limited c. health will not be affected as long as other nutrients are adequate d. proteins will be made but they will lack that particular amino acid
If the diet is lacking an essential amino acid, protein synthesis will be limited. The correct answer is B.
Essential amino acids are those that the body cannot synthesize on its own and must be obtained from dietary sources.
If a person's diet lacks one of these essential amino acids, their body will not have the necessary building blocks to make complete proteins. This will limit the body's ability to synthesize new proteins, which are necessary for growth, repair, and many other functions.
As a result, the person's health may be affected, especially if the deficiency persists over an extended period of time. It is important to have a balanced and varied diet that provides all the essential amino acids to support optimal health.
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starch is used as an energy storage form by which of the following
A. plants
B. carnivores
C. decomposers
Answer: A - plants
Explanation: Starch serves as energy storage in plants.
A substance is moved down its concentration gradient by means of a transporter protein. This is referred to as:
A substance is moved down its concentration gradient by means of a transporter protein. The process described, where a substance is moved down its concentration gradient with the help of a transporter protein, is called facilitated diffusion.
In facilitated diffusion, the transporter protein assists in the transport of the substance across the cell membrane, allowing it to move from an area of higher concentration to an area of lower concentration. Unlike active transport, facilitated diffusion does not require the expenditure of energy. A protein that moves other materials within an organism is referred to as a transport protein (also known as a transmembrane pump, transporter, escort protein, acid transport protein, cation transport protein, or anion transport protein). All living organisms require transport proteins for growth and survival. Transport proteins come in a variety of varieties.
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Sort the statement based on whether they describe DNA replication in eukaryotes or prokaryotes
Statements that describe DNA replication in eukaryotes:
Replication takes place in the nucleus.There are multiple origins of replication.Replication occurs at multiple points along the chromosome.Statements that describe DNA replication in prokaryotes:
There is only one origin of replication.Replication happens at just one point on the chromosome.Replication takes place in the cytoplasm.What happens in each situationEukaryotes: Replication takes place in the nucleus, there are multiple origins of replication, and replication occurs at multiple points along the chromosome.
Prokaryotes: There is only one origin of replication, replication happens at just one point on the chromosome, and replication takes place in the cytoplasm.
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complete question
Sort the statements based on whether they describe DNA replication in eukaryotes or prokaryotes.
Replication takes place in the nucleus.
There is only one origin of replication.
There are multiple origins of replication.
Replication happens at just one point on the chromosome.
Replication takes place in the cytoplasm.
Replication occurs at multiple points along the chromosome.
WHAT IS GOING ON ??????
Which of the following represents an interaction between the biosphere and the atmosphere
A. Precipitation is absorbed into the ground
B. Plants take in carbon dioxide from the air
C. Ice melts the causing sea levels to rise
D. Humans drink springwater
Answer: A
Explanation:
Precipitation is absorbed into the ground represents an interaction between the biosphere and the atmosphere. Thus, the correct option is A.
What is the interaction between biosphere and the atmosphere?
The interaction between biosphere and the hydrosphere, includes the biosphere which requires water to drink for animals and for the growth of plants which are present in the biosphere. Water is provided by the hydrosphere through precipitation. This interaction between the hydrosphere and biosphere helps the life on Earth to be more sustainable.
Plants draw water and different nutrients from the soil and release water vapor into the atmosphere. This is possible by the precipitation which results into the absorption of water and minerals into the ground.
Therefore, the correct option is A.
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How does cellular respiration result in a net release of energy?
Explanation:
Cellular respiration formula
C6H12O6+6O2----> 6CO2+6H2O+ATP
Answer:
here's my answer :)
Neuroscience has found that our automatic evaluation of social stimuli is located in the brain center called the ______.
The correct answer to the question is "Amygdala".Neuroscience has found that our automatic evaluation of social stimuli is located in the brain center called the amygdala.
The amygdala is an almond-shaped set of nuclei located in the temporal lobes of the brain. The amygdala is a part of the limbic system, which is linked to emotions, survival instincts, and memory. The amygdala is commonly referred to as the brain's "fear center," since it plays an important role in the formation and recall of emotional memories, particularly those connected to fear. The amygdala is also involved in the processing of other emotional states, including happiness, pleasure, and sadness.
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you may notice that chromosomes sometimes look like an x. that is actually a _________ chromosome.
We notice that chromosomes sometimes look like an X, which is actually replicated chromosome.
When chromosomes are observed in the shape of an "X," it indicates that the chromosome has undergone replication during the cell cycle. Prior to cell-division, the DNA within a chromosome is duplicated to ensure accurate distribution of genetic material to daughter cells.
Replication occurs during the S phase of the cell cycle, resulting in two identical sister chromatids held together by a structure called the centromere. This replicated chromosome allows for the equal distribution of genetic information during cell division.
The "X" shape is temporary and serves as a visible representation of the duplicated chromosome before it separates into two individual chromatids during cell division.
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Researchers discovered a toxin that stops cells from releasing energy. Cells exposed to this toxin cannot carry out many of their normal processes. Which of these cell organelles are most directly affected by this toxin?
F. Ribosomes
G. Chloroplast
H. Mitochondria
J. Vacuoles
The most affected cell organelle in case the cell is exposed to toxin affecting release of energy is mitochondria.
Using a series of chemical processes, mitochondria convert glucose into adenosine triphosphate (ATP), an energy molecule that powers a number of other cellular functions. Mitochondria is the organelle where cellular respiration takes place and after its completion a large amount of ATP is generated. ATP act as the molecule that carries energy from one part of the bosy to other.
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what method can be used to compare the transcriptomes of individual cells
Single-cell RNA sequencing (scRNA-seq) is the method that can be used to compare the transcriptomes of individual cells.
Single-cell RNA sequencing (scRNA-seq) is the method that can be used to compare the transcriptomes of individual cells. Single-cell RNA sequencing is a powerful tool that allows for the analysis of gene expression in individual cells. In contrast to traditional RNA sequencing, which requires large numbers of cells, scRNA-seq enables researchers to examine gene expression in individual cells.
This method can be used to identify rare cell populations, detect cell-to-cell variability, and study gene expression dynamics. scRNA-seq data can be analyzed using a variety of bioinformatics tools, including clustering algorithms, gene expression visualization tools, and differential expression analysis tools.
Overall, single-cell RNA sequencing is an important tool for studying gene expression at the single-cell level and can provide insights into cellular processes that cannot be obtained using traditional RNA sequencing methods.
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How is a graph similar to a data table?
Answer:
they both hold data and show you a scale
What are the 4 nucleotides that make up DNA? What happens if one of these
nucleotides are swapped for another?
Answer:
The four nucleotides that make up DNA are adenine (A), cytosine (C), guanine (G), and thymine (T).
What happens if one of these nucleotides are swapped for another?
The simplest mutation is a point mutation. This occurs when one nucleotide base is substituted for another in a DNA sequence. The change can cause the wrong amino acid to be produced.
I hope this helps and have a great day!
Explanation:
The DNA stands for deoxyribose nucleic acid. It contains all the genetic information required by the body for its functioning.
The DNA has 4 types of nucleotides depending on the different nitrogenous bases. These are:-
AdenosineCytosineGuanosineThymosinThere are 4 types of nitrogenous base pair that is Adenine, guanine, cytosine, and thymine. When these nitrogenous bases join with the nucleoside will form all 4 nucleotides mentioned above.
When one of the nitrogenous bases replace with another it causes the mutation.
Hence, the 4 nucleotides are Adenosine, cytosine, Guanosine, and Thymosin.
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what is a DNA
what does DNA stand for
Answer:
Deoxyribonucleic acid is a molecule composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth, and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
Deoxyribonucleic acid
Explanation:
hope this helps...
Answer:
DNA is short for Deoxyribonucleic acid, more commonly known as DNA, is a complex molecule that contains all of the information necessary to build and maintain an organism. All living things have DNA within their cells. In other words, whenever organisms reproduce, a portion of their DNA is passed along to their offspring.