Correct answer: A) Organisms gradually change the environment
Succession occurs when a disturbance takes place in the environment, it can occur either by the disturbance of minor or major order disturbance.
The major disturbance can be caused due to the natural cause like the volcanic eruption and minor disturbance caused due to a natural or human cause like the forest fire.
Based on the type of disturbance succession is classified into two types of primary and secondary succession.
Primary succession is said to occur when a community or a group of the species evolve from a barren land. The land is fresh and new and no life is found on it.
Example: Succession after the volcanic eruption is said to be primary succession.
Secondary succession is said to occur when the disturbance destroys the whole ecosystem, but still, there is an availability of soil, nutrient, and seed in the ecosystem.
Example: Forest fire
Which type of fossil is Gerobatrachus hottoni most likely to be?
intermediary
phylogenic
transitional
index
the response of plants to gravity is
What is the relationship between photosynthesis and cellular respiration? Explain in detail.
________ are white blood cells that eliminate the chances of infection.
Answer: The correct answer for the fill in the blank is Phagocytes.
Phagocytes are the White blood cell which help in eliminating the chances of infection by attacking foreign particles in the body. They do this with the help of a process, which is called as phogocytosis.
In this process, they first ingest the harmul particles like bacteria ( in the form of food vacuoles, phogosomes) and then digest them using hydrolytic enzymes.
By doing so, they completely eliminate the chances of infection in the body.
Example of phagocytes- Macrophages, dendritic cells, and neutophils.
what is the rules to SciGame Gamma
SciGame Gamma is a math game focusing on geometry concepts including mathematical rules and theorems for high school students.
SciGame Gamma is a mathematical game designed to improve students' understanding and skills in geometry. In this game, players are presented with geometric shapes and angles, and they have to solve problems related to area, perimeter, angles, and geometric properties.
Players must apply mathematical rules and theorems to correctly answer questions and progress through the game. By engaging with SciGame Gamma, students can enhance their geometric reasoning and problem-solving abilities in a fun and interactive way.
Give two examples of specialized cells and explain the cell's unique role in the human body
Nerve cells and red blood cells are two examples of specialized cells. Nerve cells have long extensions that help them transmit electrical messages, while red blood cells are specialized to carry oxygen through the blood.
Explanation:Two examples of specialized cells are nerve cells and red blood cells.
Nerve cells, also known as neurons, have long extensions called axons that help them carry electrical messages to other cells. This allows them to transmit signals throughout the body.
Red blood cells are specialized to carry oxygen quickly through the blood. They contain a protein called hemoglobin, which binds to oxygen and transports it to tissues throughout the body. Their concave shape allows them to squeeze through narrow blood vessels and maximize the surface area available for oxygen exchange.
Which of the following is an example of qualitative data?
A) A solution contains copper ions
B) A plant has five flowers
C) A solar system has nine planets
biology help please i will upvote
Matching
A. Interphase B. Prophase C. Metaphase D. Anaphase E. Telophase F. Cytokinesis
_____1. Chromosomes line up at the equator and spindle fibers attach to the centromeres of the chromosomes.
_____2. Division of the cell cytoplasm once mitosis is complete
_____3. Before cytokinesis, 2 nuclear envelopes form around each set of chromosomes.
_____4. Before Mitosis begins, the cell prepares for division by increasing in size and duplicating the DNA.
_____5. Sister chromatids are separated by spindle fibers and the 2 sets of identical chromosomes are pulled to opposite ends of the cell
_____6. Chromosomes condense the nuclear membrane breaks apart and spindle fibers form.
1. C. Metaphase (Chromosomes line up at the equator and spindle fibers attach to the centromeres of the chromosomes.)
2. F. Cytokinesis (Division of the cell cytoplasm once mitosis is complete)
3. E. Telophase (Before cytokinesis, 2 nuclear envelopes form around each set of chromosomes.)
4. A. Interphase (Before Mitosis begins, the cell prepares for division by increasing in size and duplicating the DNA.)
5. D. Anaphase (Sister chromatids are separated by spindle fibers and the 2 sets of identical chromosomes are pulled to opposite ends of the cell)
6. B. Prophase (Chromosomes condense the nuclear membrane breaks apart and spindle fibers form.)
Explanation:During metaphase (C), chromosomes align at the equator, and spindle fibers attach to their centromeres, preparing for the subsequent separation.
Following mitosis, cytokinesis (F) takes place, dividing the cell's cytoplasm into two distinct daughter cells. In telophase (E), nuclear envelopes form around each set of chromosomes before cytokinesis begins.
Interphase (A) marks the period before mitosis, where the cell grows, duplicates its DNA, and readies itself for division. Anaphase (D) involves the separation of sister chromatids, pulled by spindle fibers to opposite ends of the cell.
Lastly, in prophase (B), chromosomes condense, the nuclear membrane breaks apart, and spindle fibers form, initiating the process of mitosis.
The sequence reflects the chronological order of events during cell division, illustrating the intricate and precisely orchestrated stages of the cell cycle.
The higher invertebrates are divided into two evolutionary lines, protostomes and deuterostomes. This division is based on which developmental feature?
A.wether the blastopore ultimately develops into a mouth or an anus
B. wether the embryonic cells undergo spiral or radial cleavage
C. wether the coelom forms by splitting the mesoderm or through the pocket of the gut.
The answer is A whether the blastopore ultimately develops into a mouth or anus
i know because i just took a test and passed with this same question
Answer:
A. whether the blastopore ultimately develops into a mouth or an anus
Explanation:
The higher invertebrates are divided into two evolutionary lines named protostomes and deuterostomes based on whether the blastopore ultimately develops into a mouth or an anus. Blastopore is the first developement opening of archenteron (rudimentary alimentary canal) which appears during gastrula stage. If during embryonic development, the blastopore develops into mouth then the animal is known as protostome whereas development of anus from blastopore will make the invertebrate a deuterostome.
Invertebrates like annelids, arthropods and molluscs are examples of protostomes while echinoderms are examples of deuterostomes.
Explain why and how theories may be changed or replaced over time.
Answer:Theories may be changed over time as new information is discovered or new technologies are developed. New developments lead to changes in experimental methods, which provide information that may or may not support the existing theory. If the theory is still supported, it may be updated. If it is not supported, but the results are true and relevant, the theory may be replaced.
Choose one microscopic species that causes a human illness. Give the scientific name of the species, the disease it causes, and the vector, and then describe the symptoms in a 130 word paragraph or two.
Answer:
malaria or ebola
Explanation:
HELP ASAP!!!
While an organism is alive, what happens to its C-14 to C-12 ratio?
^^^^^^^what he said^^^^^^^
Which statement is true ?
The true information is that lipids are a type of fat, as option A shows.
What should we know about lipids?They are formed by fatty acids and glycerol.They are responsible for storing energy.Lipids are a type of fat that can have different names and forms, but they are always formed by molecules with hydrophobic heads formed by fatty acids and a hydrophilic tail formed by glycerol.
Lipids store energy that will be quickly used by the human body to carry out metabolism.
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Environments are covered with manmade structures like roads, buildings, and sewers. Green spaces such as parks, backyards, and undeveloped lots are scattered in among the developed areas instead of all connected together. Plants and animals have to deal with exposure to toxins from vehicles and loss of habitat and food sources. These are all ways that .
a.humans have intervened to both manage and manipulate the environment to ensure species survival
b.nonhuman life in an urban ecosystem differs from that in an undeveloped forest ecosystem
c.cities have been form to keep wildlife in public
Answer : Option B) Nonhuman life in an urban ecosystem differs from that in an undeveloped forest ecosystem.
Explanation : From the above information given, it can be simply concluded that humans have changed the environment around them. The human habitats are very different from the nonhuman life habitats. They have their own ecosystem designed for their comfort. This impacted the nonhuman life as they have different ecosystem in cities than in the forests.
In the diagram of the earths interior, where does the material that forms volcanos come from?
Using the same diagram, which part is the densest?
The answer would be A because it is the inner core of the earth.
which part of the electromagnetic spectrum do plants use for photosynthesis?
What is the difference between decantation and extraction in lab? ...?
Final answer:
Decantation is the process of pouring off the top layer to separate it from the bottom layer, while extraction involves transferring a desired substance from one solvent to another based on differences in solubility.
Explanation:
Decantation and extraction are both separation techniques used in the laboratory.
Decantation is the process of carefully pouring off the top layer of a mixture to separate it from the bottom layer. This is often used when one of the substances in the mixture is denser than the other. For example, in a mixture of oil and water, decantation can be used to separate the oil, which floats on top, from the water.
Extraction involves transferring a desired substance from one solvent to another solvent, based on differences in solubility. This is typically done using a separatory funnel, where the two immiscible liquids are mixed together and then allowed to separate into layers. The desired substance will preferentially dissolve in one of the solvents, allowing it to be separated from the other components of the mixture.
What studies how traits are inherited though the interactions of alleles.?
Due to Mendel's law of segregation
A)homologous chromosomes pair up and cross over during prophase 1 of meiosis
B)alleles belonging to the same gene will never end up in the same gamete during mitosis
C)alleles belonging to the same gene will never end up in the same gamete during meiosis
D)genes located on non-homologous chromosomes sort independently of one another during the formation of gametes
Answer: The correct answer is C) Alleles belonging to the same gene will never end up in the same gamete during meiosis.
According to the Mendel's law of segregation, during the process of gamete formation in meiosis, the alleles ( different forms of a gene) are separated from one another so that every gamete receives one allele.
This is also called law of purity of gamete as alleles never end up in the same gamete during meiosis.
Thus, option C) is the right answer.
Mendel's law of segregation is "alleles belonging to the same gene will never end up in the same gamete during meiosis". Therefore, option B is correct.
Mendel's law of segregation states that during the formation of gametes (sex cells), the alleles (alternative forms of a gene) for each trait separate from each other and end up in different gametes. This ensures that each gamete receives only one copy of each gene.
When an organism produces gametes through meiosis, the two alleles for a particular gene separate or segregate, with one allele going into one gamete and the other allele going into a different gamete. This segregation allows for the inheritance of traits in a predictable manner and is one of the fundamental principles of Mendelian genetics. Thus, option B is correct.
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Movement of molecules through a membrane by filtration depends upon the presence of
A. hydrostatic pressure
B. Atmospheric pressure
C. Osmotic pressure its not this one because I chose this one and got it wrong
D. none of the choices are correct
Movement of molecules through a membrane by filtration depends on hydrostatic pressure.
Explanation:The correct answer is A. hydrostatic pressure.
Filtration is the movement of molecules through a membrane due to the force of pressure. In this case, hydrostatic pressure pushes molecules across a membrane. This process is commonly observed in the kidneys, where blood pressure pushes small molecules like water and solutes out of the blood and into the nephrons, which are specialized structures involved in urine formation.
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DNA samples should be stored in an airtight containers to prevent contamination true or false
Answer: True
Explanation:
DNA is a biological evidence. It is a heredity material which is present in all organisms on earth. The DNA in humans can be taken as sample from nails, bones, blood, skin, hair and other sources.
The DNA samples can be taken so as to establish the identity of the culprit, victim or any one which is associated with crime.
The DNA evidence has applicability as a potent evidence in the court of law. Thus utmost care should be taken to preserve it's integrity until it is analysed and presented in the court of law.
Thus the DNA evidence should be collected and preserved in airtight containers so as to prevent the entry of airborne pathogens like bacteria, virus these can contaminate the sample evidence and can make the evidence not of any use.
Answer:
False
Explanation:
It can encourage growth of mold, so the samples should have ventilation.
Chromosomal mutations can have a variety of effects on individuals. Down syndrome is a disorder that causes problems such as mild to moderate mental retarationn and slow or stunted development. A common form of this disorder is the result of a genetic mutation that occurs when there is an extra chromosome 21. Which type of chromosomal mutation causes this form of Down syndrome? nondisjunction inversion deletion insertion
Answer:
The correct answer would be non-disjunction.
Down syndrome refers to the genetic disease caused by the non-disjunction of chromosome number 21.
Non-disjunction refers to the event in which the homologous chromosomes or sister chromatids fail to separate properly during a cell division.
In Down syndrome, the sister chromatids of chromosome 21 fail to separate properly which results in the formation of a gamete with 2 copies of chromosome 21.
When this gamete fertilizes with another gamete, it results in the formation of a zygote with 47 chromosomes, that is, 46 chromosomes + extra copy of chromosome 21.
Answer:
The correct answer is nondisjunction.
Explanation:
The nondisjunction of the chromosome can be defined as the failure of separation of sister chromatid during meiosis. Due to the nondisjunction during the cell division, one daughter cells gets two chromosome and other daughter cell gets none of it. In case, the daughter cell having two chromosome is fertilized by a normal gamete it can result in trisomy.
In the case of Down Syndrome, the nondisjuction of the chromosome number 21 takes place.
the ? chromosome is the sex determiner for many species?
Answer:
Male (X Chromsome)
Explanation:
The mother is usually homozygous, meaning she has two of the same chromosome, so her offspring will get the same chromosome from her regardless. However, the father is heterozygous, meaning he has different chromsomes. Him passing down one or the either will determine the sex.
For example, in humans the mother passes the X, and then the father determines if it is a boy (passes down Y), or if it is a girl (passes down X).
Energy flows in a food chain as one organism consumes another for food. What happens to this energy as it moves up the food chain from one level to the next?
Answer: IT DECREASES
Explanation:
One criticism of the dsm that is noted by your authors is that it adheres to model, which means that a person is seen as either having a mental disorder, or not having a mental disorder. there is little or no allowance for "degrees" of a disorder.
What see animals live in the lower mid zone?
What does this activity tell you about the relationship between these six organisms?
Bird bat lizard frog cat whale
Final answer:
The activity concerning the comparison of a bird, bat, lizard, frog, cat, and whale is meant to illustrate their evolutionary relationships, using homologous structures and constructing cladograms to understand common ancestry.
Explanation:
The question relates to the concept of evolutionary relationships and common ancestry among organisms, which are key topics in biology. The organisms listed, namely a bird, bat, lizard, frog, cat, and whale, can all be compared in terms of their phylogenetic relatedness. Such comparisons often involve looking at homologous structures, which are anatomical features that are derived from a common ancestor but may have different functions, as is seen in bird wings and whale fins. Additionally, constructing a cladogram can help illustrate the evolutionary pathways and relationships between different species. By examining these aspects, it's possible to draw conclusions about how closely related these organisms are, and we can infer that mammals (such as bats, cats, and whales) share a more recent common ancestor with each other than with birds, lizards, and frogs which belong to different branches of the vertebrate tree of life.
A lab technician observes a unicellular organism with two long flagella and two nuclei in the blood smear of a person. To which phylum does this protozoan belong?
Identify the functional group ALWAYS found in the following pair of monomeric organic molecules: fatty acids and amino acids.
The functional group found in both fatty acids and amino acids is the carboxyl group (-COOH).
What is a functional group?A functional group is a specific group of atoms or bonds within a molecule that are responsible for its characteristic chemical reactions. Functional groups provide a means of predicting the reactivity of organic molecules and play a crucial role in organic chemistry.
Some common functional groups include alcohols (OH), carboxylic acids (COOH), amines (NH2), and alkanes (C-C). Understanding functional groups is essential for predicting the behavior of organic molecules and designing chemical syntheses. They are key to understanding the chemistry of many biologically important molecules such as proteins, carbohydrates, and lipids.
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Which of the following statements is correct with respect to the photosynthetic pathway of grass or a cactus?
In a cactus, carbon is fixed only during the day.
In grass, carbon is fixed only during the night.
In a cactus, carbon is fixed only during the night.
There are three types of carbon fixation in plants - C3, C4, and CAM fixation. C3 and C4 plants open their stomata during the day while CAM plants open stomata during the night. Mostly, plants fix carbon during the day. However, plants in arid locations, such as cactuses, use CAM carbon fixation because of adaptation to water deficiency. Their stomata are closed during the day and water loss is reduced. In the night when is colder, stomata open and carbon dioxide enters through stomata.
Answer:
In a cactus, carbon is fixed only during the night.
Explanation: