Meiosis is the process in which gametes are created. Option D is correct.
Meiosis is a type of cell division that occurs in sexually reproducing organisms. It is responsible for the production of gametes, which are the sex cells that fuse to form a new organism. Meiosis is a two-step process. In the first step, called meiosis I, the cell divides once, resulting in two daughter cells. Each daughter cell has half the number of chromosomes as the parent cell.
In the second step, called meiosis II, the daughter cells divide again, resulting in four daughter cells. Each daughter cell has one-quarter the number of chromosomes as the parent cell. The gametes produced by meiosis are haploid, which means that they have half the number of chromosomes as the parent cell. This is necessary for the fusion of two gametes to produce a diploid cell, which has the full set of chromosomes necessary for a new organism to develop. Option D is correct.
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The levels of water and salt in the blood are controlled by what
Answer:
Kidneys
Explanation:
These organs excrete excess water and salts in the blood and also conserves them when they are in low concentrations. The rate of reabsorption is controlled by ADH (Anti-diuretic hormone/vasopressin) and ACTH (that triggers the release of aldosterone by adrenal glands) that are produced by the pituitary gland.
Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.
Match each type of skeletal marking to its function
allows tendons to attach to bone
allows blood vessels and nerves
to travel through bone
allows two bones to form a joint
allows smooth gliding of joints
allows for the production of
red blood cells
foramen
tubercle
fossa
Answer:
Foramen: Allow blood vessels and nerves to travel through bones
Tubercle: Allows tendons to attach to bone
Fossa: Allows two bones to form a joint
Interactions between organisms and their environment impact the organism’s overall population. The jaguar Panthera onca is the largest cat in North America. It is found in areas across the Southwest, including Arizona, New Mexico, and Texas. It is a carnivore that has powerful jaws and sharp teeth and preys on fish, turtles, tapirs, and many smaller mammals. Which shows the relationship between the jaguar and turtles?
Answer:
Predator-prey relation.
Explanation:
A predator is defined as an organism that hunts another individual, whereas a prey refers to the organism that is eaten by the predator. They tend to co-evolve (evolve together). The prey is essential for the predator to survive, while the predator controls the prey populations by hunting some of the individuals.
Predator-prey relations are interactions that occur between two species where one species (prey) represents a food source for the other species (predator).
The turtle (prey) is essential for the survival of the jaguar (Panthera onca), while the jaguar controls the populations of turtles by preying upon them. Therefore, this is a predator-prey relation.
Answer:
prey-predator
1. What is microevolution?
A genetic changes among and within populations
B evolution of new species
C major changes in populations over a long time
D changes in a population's allele frequencies
Answer:
A. Genetic changes among and within populations
Explanation:
Macro evolution is the theory that animals evolved over time into new species while micro evolution is more minute changes within a species, like a genetic mutation to help the species adapt to their environment. An example would be of a genetic mutation in the fur color of bears to make different types of bears like black bears, brown bears, polar bears, etc
Answer:
genetic changes among and within populations
Explanation:
Which of the following describes a solution that contains a buffer?
A. Sodium hydroxide, a base, is added to the solution, and the pH of
the solution becomes higher.
B. Distilled water is added to the solution, and the pH of the solution
does not change.
C. Acetic acid is added to the solution, and the pH of the solution
becomes lower
D. Citric acid is added to the solution, but the pH of the solution does
not change.
SUBMIT
Answer:
D
a buffer is an ionic compound that resists change in ph hence no ph change on addition of an acid proves the presence of a buffer which is different when distilled water is added because it is neutral hence no increase or decrease in ph
Answer:
Citric acid is added to the solution, but the pH of the solution does not change.
Explanation:
HELP PLEASE ASAP!!!!!!
Demonte is working with other people in his neighborhood on a community project focused on improving natural ecosystems in their town. He decided to consult a ________ specialist for advice on how to go about it.
Answer: ... restoration... (specialist)
Explanation:
correct answer in plato
An ecologist would be the appropriate specialist to consult for advice on improving natural ecosystems in a community project.
Explanation:A student working on a community project focused on improving natural ecosystems would consult an ecologist for advice on how to go about it. Ecologists study the relationships between organisms and their environment, helping to understand the impact of human activities on ecosystems and providing guidance for conservation efforts. They work at various levels, including organism, population, community, and ecosystems to collect data and develop management strategies that promote sustainability.
What is the process of succession?
O
A. When a community is replaced by another community
B. When a species changes from one niche to another niche
O
C. When one disturbance replaces another disturbance
O D. When an ecosystem changes from one biome to another biome
Answer:
It is A
Explanation:
When a community is replaced by another community. Therefore, option (A) is correct.
What is Succession?Succession is the process by which a community of organisms changes over time. It occurs when one community is replaced by another community through a series of stages.
Primary succession occurs in an area where there is no existing community, such as on bare rock or after a volcanic eruption. Pioneer species, such as lichens, begin to colonize the area and over time, larger plants and animals move in, leading to the development of a mature community.
Secondary succession occurs in an area where there is an existing community that has been disturbed, such as by a forest fire or clear-cutting. The community may be partially or completely destroyed, and the process of succession begins again.
In both cases, the process of succession involves a series of stages in which different species replace one another and the community becomes more complex and diverse over time.
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A fish whose streamlined body enables it to move easily in a current is most likely adapted to which aquatic ecosystem? ponds rivers lakes wetlands
Answer:
The answer is Rivers.
Explanation:
Currents are one of the most difficult situations for fishes, however, since this fish is adapted to it, rivers are the aquatic ecosystems with more currents, even more than the ocean. Rivers have currents all the time in all parts of it, although it could be faster or slower in some zones.
Food employees must wear clean outer clothing to prevent
contamination of:
A. Potable water supply
B. Wall surfaces
C. Handwashing lavatories
D. Food
Answer:
D. Food
Explanation:
Food employees must wear clean outer clothing to prevent contamination of food.
Food employees must wear clean outer clothing to primarily prevent contamination of food. This is part of essential food hygiene and safety practices to ensure food is safe for consumption.
Explanation:Food employees are required to wear clean outer clothing primarily to prevent the contamination of food. Wearing clean clothes helps to minimize the risk of bacteria, dirt, or other harmful substances being transferred from the clothing to the food. Hence, it's a fundamental part of food hygiene and safety practices.
Contamination of the potable water supply, wall surfaces or hand washing lavatories, although important to prevent, are not primarily related to the requirement for food employees to wear clean outer clothing. The main concern is to assure the food they are handling remains safe and clean to consume.
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5. Viruses such as avian (bird) flu and swine flu that mutate
spread from animals to human populations are known as what?
O A. Zoonoses
O B. Vectors
O C. Epidemics
OD. Transmuting viruses
Answer:
Zoonoses.
Explanation:
Zoonoses may be defined as any infection or diseases that can be transferred between animals and humans. Bacteria, virus, fungal and protozoan disease can be easily transferred from humans to animals or vice-versa.
Avian bird flu and swine flu that are mutated can be easily spread from animals to the human population. Direct or indirect contact can transfer these diseases in the humans. Hence, these are consider as zoonoses.
Thus, the correct answer is option (A).
This is my question hope you could help someone in the future because I don’t have time to wait :)
Answer:
I think it would be ray 4. Hope this helps!
Which of these organelles is responsible for sorting proteins before they are
sent to the body of the organism?
A. Nucleus
B. Vacuole
C. Rough endoplasmic reticulum
D. Golgi apparatus
Answer:
D. Golgi apparatus is the correct answer.
Explanation:
Golgi apparatus is responsible for sorting proteins before they are
sent to the body of the organism.
The Golgi apparatus receives the proteins from the rough endoplasmic reticulum.
After receiving the Golgi apparatus modifies and then sort some of them and then the proteins are concentrated and packed into sealed droplets termed as vesicles.
How do cellular respiration and photosynthesis provide energy for an organism to function?
Answer:
They provide energy because photosynthesis makes sugar (glucose) which results into ATP(energy). In CR (cellular resp), oxygen is broken down during the process of photosynthesis and is used in CR to make water with hydrogen bonds.
Photosynthesis and cellular respiration work together to transfer energy from the sun to organisms. Photosynthesis captures solar energy to produce glucose, which cellular respiration converts into ATP, the usable energy for cells. This cyclical relationship powers life functions and maintains atmospheric balance.
Both photosynthesis and cellular respiration are fundamental processes that provide energy for organisms. Photosynthesis is the process by which certain organisms, such as plants, algae, and some bacteria, convert solar energy into chemical energy stored in glucose. This energy enters ecosystems and is transferred from one organism to another, fueling the cycle of life. Cellular respiration is a metabolic pathway where organisms use oxygen and the glucose produced by photosynthesis to create ATP, which is the energy currency in cells. This process releases carbon dioxide and water as byproducts and is essential for powering life functions.
Through photosynthesis, light energy is captured and converted into chemical energy within the bonds of glucose molecules. Animals and other organisms consume these glucose-rich plants, and through cellular respiration, they break down the glucose to release the stored energy, using it to perform vital activities. This interrelationship between photosynthesis and cellular respiration maintains the balance of oxygen and carbon dioxide in the atmosphere, making it a cyclical process that is crucial for sustaining life on Earth.
Which is more stable RNA or DNA?
Answer: RNA
Explanation: because in DNA, it results with viruses, and RNA is better I guess
How many molecules of oxygen are produced for every molecule of carbon dioxide that is consumed during photosynthesis
In general, six molecules of carbon dioxide are required to produce the same six molecules of oxygen in process of photosynthesis.
[tex]6CO_2 + 12H_2O[/tex] → [tex]C_2H_1_2O_6 + 6O_2 + 6H_2O[/tex]
What is Photosynthesis?Photosynthesis may be defined as a process through which green plants and some algae produce their own food (glucose) with the help of carbon dioxide and water in the presence of sunlight.
By simplifying the topmost statement, it can be assumed that one molecule of oxygen is produced for every molecule of carbon dioxide that is consumed during photosynthesis.
Therefore, it is well described above.
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Which options identify the main ocean zones? Check all that apply. deep
intertidal
neritic
open-ocean
surface
Answer:
Deep, neritic, and open ocean.
Answer:
The answer is Intertidal, Neritic and Open-ocean.
Explanation:
The main ocean zones are:
Intertidal zone = It is the closest to the coast. In high tide it is covered with water, and at low tide it is exposed to the air. Neritic zone = It is located on the continental shelf, the water is not very deep and many nutrients and sunlight are found. Open ocean zone = It is the ocean beyond the continental shelf where water is very deep and nutrients may be scarce.What would happen to the size of the lion population if elephants usually won this competition
The lion population would decrease if elephants usually won competitions due to their impact on food availability and ecosystem dynamics, showcasing the interconnectedness of species within an ecosystem.
The lion population would likely decrease if elephants usually won competitions due to the impact on food availability and ecosystem dynamics. In the Addo Elephant National Park, the introduction of lions resulted in a significant predation on African buffalo, affecting the population demographics and behavior.This situation exemplifies how changes in predator-prey dynamics can influence wildlife populations, highlighting the interconnectedness of species within an ecosystem.The decline in African elephant populations due to factors like habitat loss and poaching further underlines the importance of considering various factors in wildlife conservation efforts.
Andrea wants to understand the impact of the fragmentation of habitats on wildlife species. Which method will help Andrea with her study?
A assisted reproduction
B. camera trapping
C. genome conservation
D. ecosystem modeling
Answer:
D. Ecosystem modeling.
Explanation:
Andrea wants to know the impact that habitat fragmentation has on wildlife. If we think about it, she is studying an ecosystem: habitat + wildlife. Therefore, it is easy to conclude what the answer is. Plus, when we study damage on habitats that bring negative effects to wildlife, we're directly studying the damage of an ecosystem.
Ecosystem modeling is the creation of an ecosystem model, to understand an study what happens in the real ecosystem.
Hope it helped,
BiologiaMagister
Last question, how many dog breeds are there in the world?
Answer:
American Kennel Club = 202 dog breeds
Kennel Club = 211 dog breeds
Federation Cynolgique Internatioinale = 344 breeds
The overall take-away of an experiment's results is the
•
•
•
•
A. introduction
B. analysis
C. conclusion
D. hypothesis
Answer:
C. conclusion
Explanation:
A conclusion summarizes the result of an experiment
Answer: C. conclusion
Explanation:
An experiment is the process of obtaining new findings by application of a methodology. The experiment can be used to either support, validate or refute the set hypothesis or to answer a scientific question. It may vary in scale or goal.
A conclusion is the last part of the experimental report. The conclusion is the overall take away of an experiment's results as it supports the results of the experiment by the theory or principle of the experiment. It suggests that the experimental findings or results match or prove the set hypothesis.
Label the steps for protein synthesis in order, beginning with the first step
The steps for protein synthesis in order are:
1. Copy of one side of DNA strand is made (called mRNA, messenger RNA)
2. mRNA moves to cytoplasm, then ribosome.
3. mRNA goes through ribosome 3 bases at a time.
4. transfer RNA (tRNA) matches up with the open DNA bases.
5. tRNA releases the amino acid at the top, which joins the chain of amino acids being produced.
Answer:
Steps of protein synthesis:
1) DNA double helix unwinds into a single strand and exposes a sequence of nitrogenous bases, this is also known as the unzipping process.
2) Transcription: In this process, DNA transfer the genetic instruction to mRNA in the nucleus.
3) Translation: In this process mRNA couples the ribosomes & tRNA helps to bring amino acids to ribosomes. This process is known as Initiation.
4) Elongation: Anti-codons present on tRNA recognizes codons present on mRNA.
5) Termination: In this step when the stop signal on mRNA is reached, the process of protein synthesis is terminated.
Determine which of the following characteristics are environmental, not inherited.
I. Weight
II. Blood group
III. Language spoken
IV. Eye color
Answer:
Environmental characteristics (not inherited): Weight and Language spoken.
Explanation:
Environmental characteristics are traits or features that are primarily influenced by external factors in an individual's environment rather than being inherited through genes. For example, weight can be influenced by factors such as diet, exercise, and lifestyle choices. Language spoken is another environmental characteristic as it is learned from the surrounding culture and the community a person grows up in. These characteristics can vary significantly among individuals based on their unique experiences and interactions with their environment.
The carbon-dioxide content in the Earth's atmosphere before 1500 A.D. was between 200 and 300 ppm. The carbon dioxide
content today is about 450 ppm. Which single historical development can be blamed for this increase?
Select one:
O a. the election of George Bush
o b. the Industrial Revolution
o c. splitting of the atom
O d. the invention of agriculture
A travel-time graph can be used to find the ____.
O distance to the epicenter of an earthquake
O distance to the focus of an earthquake
O strength of an earthquake
O damage caused by an earthquake
Answer:
Distance to the epicenter of an earthquake
Explanation:
answer for gradpoint
3. Which of these substance has a brown color and is
detected by the spectrophotometer in our reaction?
A) Guaiacol
D) Tetraguaiacol
B) Peroxidase E) Hydrogen peroxide
C) buffer
Answer:
E) Hydrogen peroxide
Explanation:
Hydrogen peroxide is the substance that has a brown color and is detected by the spectrophotometer in our reaction.
Final answer:
A) Guaiacol is the substance that turns brown in the reaction involving hydrogen peroxide (H₂O₂) and is detected by the spectrophotometer. It serves as a reducing agent in the enzymatic breakdown of hydrogen peroxide by turnip extract peroxidase.
Explanation:
The substance that turns brown when detected by the spectrophotometer in the reaction involving hydrogen peroxide (H₂O₂) is guaiacol. In the process where turnip extract is used as a source of peroxidase, guaiacol serves as a reducing agent. When oxidized by the enzyme catalyzed reaction which breaks down hydrogen peroxide into water and oxygen, guaiacol transforms into a brown color. This brown coloration is a direct result of the enzymatic activity and is measured using a spectrophotometer for quantitative analysis.
A red blood cell is placed in a solution. After a period of time, the cell has shrunk to half its original size. What is true
Answer: The red blood cell which is placed in a solution will shrink because of lower water concentration compared to their water contents, the blood cell will lose water by osmosis which causes water to leave the cell.
After a period of time, when red blood cell is placed in a hypertonic solution, the cell has shrunk to half its original size is true
What is hypertonic solution?Hypertonic solution refers to a solution that have a very high osmotic pressure than other solution. hypertonic solution is one it had a greater concentration or number of solute particles outside a membrane and lower concentration inside the cell membrane.
This cause the cell to shrink.
Therefore, After a period of time, when red blood cell is placed in a hypertonic solution, the cell has shrunk to half its original size is true.
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Which type of scientific statement is defined as a statement of fact that is generally accepted to be true and universal becau
it has always been observed to be true?
O theory
O probability
O law
Answer:
Scientific Law
Explanation:
Scientific Law is a statement or fact meant to explain, in concise terms, an action or set of instructions. It is generally accepted to be true and universal, and can sometimes be expressed in terms of a mathematical equasion. Scientific laws are similar to mathematical postulates.
Jason has five equally massed lead fishing weights, each weighing 250 grams. What is the total mass of the five lead fishing weights?
Answer:
1250 g=1.25 Kg
Explanation:
We are given that Jason has five fishes of equally massed lead fish weights.
Weigh of each fish =250 grams
We have to find the value of total mass of the five lead fishing weights
Total number of fishes=5
In order to find the total mass we will use unitary method
Total mass is obtained by multiplying the total number of fishes with weight of one fish
Total mass=[tex]5\times 250[/tex]
Total mass of five fishes=1250 g
1 kg =1000g
Then 1250 g=[tex]\frac{1250}{1000}=1.25 Kg[/tex]
Hence, total mass of five lead fishing weights=1250 g=1.25 Kg
Answer:1.25kg
Explanation:
I got it correct
What determines an atom's chemical properties?
A.the number of protons in its outermost shell
B.the number of electrons in its outermost shell
C.the number of neutrons in its nucleus
D.the number of electrons in its nucleus
Answer:The right choice is B
Explanation:
what is the meaning of life (do not answer with 42 lol)
The meaning of life can be thought of as a subjective question. A subjective is a question that varies from each person so each person has a different perspective on it. I believe that the meaning of life is how you handle it. in other words, you can decide how you want to live your life and nobody can stop you from doing what you want to do.