Answer:
1.A:19 3.A:23
Explanation:
I'm sorry but i do not know what 2. and 4 means.
I know 1. and 3. because it was in biology.
Final answer:
1. Cells created during mitosis will have 38 chromosomes. 2. Dominant genes are expressed when there is at least one copy of the dominant allele present. 3. A human egg cell will have 23 chromosomes. 4. Mutation can positively help organisms by leading to the development of new traits and increasing genetic diversity.
Explanation:
1. Cells created during mitosis will have B<38 chromosomes because mitosis is a type of cell division that results in the production of two daughter cells, each with the same number of chromosomes as the parent cell. Therefore, if pigs have 38 chromosomes, the cells created during mitosis will also have 38 chromosomes.
2. Dominant genes can be represented by the letter B. Dominant genes are expressed when there is at least one copy of the dominant allele present in the genotype. This means that the dominant gene will be observed in the phenotype, even if there is also a recessive gene present.
3. A human egg cell will have A<23 chromosomes. This is because during meiosis, the process of cell division that produces gametes, the number of chromosomes is halved. As humans have 46 chromosomes in their somatic cells, the egg cell will have half that number, which is 23 chromosomes.
4. Mutation can positively help organisms in several ways. For example, a mutation can lead to the development of new traits, which can provide an advantage in a changing environment. Mutations can also increase genetic diversity within a population, which can enhance the ability of the population to adapt to different conditions.
Endoplasmic Reticulum?
A candle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. the wick is usually surrounded by wax. which is the most important property of covalent compounds that makes them useful for making candle wax?
Answer: A low melting point.
Covalent compounds are formed by sharing of electrons between atoms of different elements. The bonds formed between these covalent compounds are generally weak therefore, they exhibit low melting point. Candle is made up of covalent compounds having low melting point which facilitates it's burning.
Answer:
(B) low melting point
Explanation:
what is most likely happening to the genetic variation of the population of North East Arctic Cod? The genetic variation in the population is increasing due to selective pressure. The genetic variation in the population is decreasing due to selective pressure. The genetic variation in the population is increasing due to gene flow. The genetic variation in the population is decreasing due to gene flow.
The correct answer is genetic variation in the population is decreasing due to selective pressure.
A phenomenon that changes the fitness and behavior of the living species within a given environment is known as selective pressure. It is the mediating force of natural selection and evolution, and it can be differentiated into two kinds of pressure, that is, abiotic or biotic.
What term is used to describe a representation of a thing or system and can be used as a way to test hypotheses
Mendel studied pea plants for particular traits. When observing the results of his experiments, he created two laws of inheritance. How is a scientific law formed?
on e2020:
A law is a statement of fact that is generally excepted to be true and universal because it has always been observed to be true.
why mitochondria called power house of cell? ...?
explain the basic structure of a virus and how it replicates
Final answer:
Viruses are composed of genetic material encased in a protein capsid, sometimes with an envelope with glycoproteins for host cell attachment. Viruses replicate by invading host cells and utilizing their machinery through a series of steps, culminating in the production of new virions. The replication cycles, lytic and lysogenic, are characterized by the specific structure and genome of the virus.
Explanation:
Basic Structure of a Virus
The fundamental structure of a virus consists of genetic material, which is either DNA or RNA, enclosed within a protein shell known as a capsid. Some viruses also possess an additional lipid layer called an envelope, which often includes glycoproteins that help the virus to attach to host cells.
How Viruses Replicate
Viruses replicate by invading and hijacking a host cell's machinery. The process unfolds through several stages: attachment, where the virus binds to the cell; penetration, enabling the viral genetic material to enter; uncoating, which releases the genetic material; replication, where the host cell synthesizes new viral genomes and proteins; assembly, in which new virus particles are put together; and finally, release, where the new virions exit the host cell, often destroying it in the process. Retroviruses, like HIV, use reverse transcriptase to convert RNA into DNA to insert into the host genome.
Classification and Replication Cycles
Viruses are categorized by their replication cycles, the lytic and lysogenic cycles, which depend on their structure and genome. These cycles describe the processes of how viruses produce new particles that can then infect additional cells.
Which organism's are omnivores?
A) The snake, the bear, and the fish
B) The fish and the eagle
C) The bear and the fish
D) The snake and the mouse
If an omnivore is an animal that eats both plants and animals, I'd choose D because all the other options have fish in them. Fish basically eat other fishes right?
Or am I wrong in my thinking?
Answer:
Its C) because bears are omnivores they eat plants and animals a bear eats berrys and fishes.
Explanation:
Which scientist’s law about the ratios of masses of elements in a compound did John Dalton’s work on the atomic structure help to explain?
Democritus
J. J. Thomson
Ernest Rutherford
Joseph Proust
the correct answwer to this question is D Joseph Proust
The main purpose of models is to gain a better understanding of the world. T/F
The answer would be:
TRUE
You can learn more about models if you read on:
Models aim to gain a better understanding of an aspect or feature of the world by making it easier to visualize, define, quantify and the like by referencing it to something more commonly accepted by all. There are different types of models and each can be used depending on the aim.
If you want people to better quantify a certain aspect, then mathematical models can be used. If you want people to better visualize a certain aspect of the world, then graphical models be best. These are just some examples of models.
Use the Law of Syllogism to draw a conclusion from the two given statements.
If you exercise regularly, then you have a healthy body.
If you have a healthy body, then you have more energy.
You have more energy.
If you do not have more energy, then you do not exercise regularly.
If you exercise regularly, then you have more energy.
You have a healthy body.
...?
Answer:
the third option is the correct answer
What evidence best supports the conclusion that all cells have the same DNA?
A.
Fertilization produces one cell, and that cell divides by mitosis.
B.
Different types of cells produces different proteins.
C.
Organisms have different specialized cells.
D.
a cell’s genetic makeup
Final answer:
The evidence that all cells have the same DNA is that they all originate from a single cell created by fertilization, which then divides by mitosis. Differentiation enables these genetically identical cells to develop unique functions and structures by selectively expressing certain genes.(Option A)
Explanation:
The evidence that best supports the conclusion that all cells have the same DNA is A. Fertilization produces one cell, and that cell divides by mitosis. Mitosis is a process that ensures each new cell will have an identical set of chromosomes and, therefore, the same DNA as the parent cell. During development, all cells in a multicellular organism originate from this single fertilized egg, resulting in each cell containing the same genetic material. However, differentiation plays a crucial role in how these cells with identical DNA can develop into various types with distinct structures and functions.
Differentiation refers to the process by which cells become specialized in size, shape, metabolic activity, and function. Although each cell has the complete set of DNA, like actors reading different parts of the same script, they only 'read' or express the DNA sections relevant to their specific function. This selective expression of genes leads to the diverse cell types that form tissues such as skin, muscle, bone, and nerves.
The first of the two undeniable facts is that any localized population of a species has the potential to produce far more offspring than the local environment can support. this fact is important to understanding evolution because it means that __________.
The names of the four spheres (lithosphere, atmosphere, hydrosphere, and biosphere) came from the Greek words for
A.stone, air, water, and life.
B.Earth, wind, water, and fire.
C.Earth, air, rain, and life
D.rocks, air, sea, and life.
what is a small structure within the cell that builds proteins called?
...?
Which of the following is not a mechanism for biological evolution
Governments trying to halt overharvesting of their aquatic organisms have often created __________.
new fish markets
no-fishing zones
naval blockades
aquaculture areas
1. Which of the following is NOT a true statement about ATP?
A. ATP consists of ribose, adenine, and three phosphate groups.
B. ADP is produced when ATP releases energy.
C. ATP provides energy for the mechanical functions of cells.
D. Used ATP is discarded by the cell as waste.
Why is the ability to adjust conclusions when necessary important to critical thinking?
Which of the following releases energy?
1. Nutrients entering a cell through the cell membrane
2. Adding an additional phosphate group to an ADP molecule
3. Building sugar or starch molecules for long-term energy storage
4. Removing a phosphate group from an ATP molecule
...?
Two or more sudstances that are mixed together but not chemically combined
Renald completed only one trial of his experiment. What effect will this most likely have?
The results are more likely to have errors.
The results are more likely to be precise.
The experiment will be harder to replicate.
The experiment will be easier to replicate.
Answer: The results are more likely to have errors.
Explanation:
An experimental process requires the repetition of a particular step during recording the observations. This process of repetition will allow the development of concordant readings. The similarities in the values of atleast three readings will suggest that the methodology applied is correct and results are accurate and precise. Accepting only one observation to include in the result will lead to inclusion of errors.
Renald completed only one trial of his experiment this will lead to the inclusion of the incorrect observation will likely to include errors in the results.
Which is the main function of fruit?
To protect the seed and aid in its dispersal
To protect the flower and aid in pollination
To protect the seed and aid in germination
Answer: To protect the seed and aid in its dispersal
Fruit is a plant organ that is a characteristic feature of all the angiosperm plants. It is produced by the pollination and fertilization of the flower. The fruits comes in variety of shape, size and color. They are the products of fertilized ovary and other floral parts. Fruits can be fleshy or dry. Main function of the fruit is to provide a space of the growth and development of seeds until maturity. In maturity the fruit disperse seeds which germinate to grow into new plants.
Which of the following statements does not describe a problem with modern landfills? A. Materials buried in landfills decompose in three years. B. Chemicals leaking out of the waste stored there may pollute wells or groundwater supplies. C. Explosive gases can be produced by landfills and may build up in basements of nearby buildings. D. It takes a lot of space to contain the amount of garbage produced by households.
The statement that wrongly describes the problem with modern landfills is ;
It takes a lot of space to contain the amount of garbage produced by households. ( D )Landfills are built mostly for the storage of industrial and household wastes, which might be harmful to the environment if not properly disposed or left to litter the environment.
when Industrial wastes are disposed in landfills there is the danger of having chemicals leak into ground water thereby leading to water contamination. which is a problem with modern day landfills.
Landfills are usually existing pits, which are controlled by waste management agencies. and therefore do require much land mass but depth to contain the amount of wastes stored in them.
Hence we can conclude that The statement that wrongly describes the problem with modern landfills is , It takes a lot of space to contain the amount of garbage produced by households.
Learn more : https://brainly.com/question/12745559
What part of translation depends on the base-pairing rules?
what types of rocks results from the metamorphism of limestone?
In order for a human female to express a recessive sex-linked trait, she must have....
A) two recessive alleles
B) an inactive allele
C) a recessive allele on a Y chromosome
D) two recessive autosomal alleles
compare primary consumer vs. secondary consumer
Primary consumers are herbivores that directly eat primary producers like plants, while secondary consumers are carnivores that feed on primary consumers. Humans can act as primary, secondary, or even tertiary consumers depending on what they eat. The energy flow in ecosystems starts with primary producers and moves up through various consumer levels, with decomposers recycling nutrients from all trophic levels.
Explanation:In ecosystems, the organisms at the base of the food chain are often photosynthetic, such as plants or phytoplankton, and are referred to as primary producers. The primary consumers are usually herbivores that feed directly on these producers. On the other hand, secondary consumers are typically carnivores that eat the primary consumers, obtaining energy from the food chain's second trophic level.
Humans can serve as an example of how consumers can operate at different trophic levels: they are primary consumers when they eat vegetables (primary producers), secondary consumers when they eat herbivorous animals like cows, and even tertiary consumers when consuming carnivorous animals such as salmon.
Primary producers use processes like photosynthesis or chemosynthesis to convert light or chemical energy into food, and consumers obtain energy by feeding on these producers or subsequent consumers. Decomposers, which include small microorganisms, play a different role by consuming materials from all trophic levels after death, whereas tertiary consumers feed only on live secondary consumers.
Deconstructive forces such as erosion helps to build up the Earth’s surface.
True or False
Answer:true
Explanation:
ERosion is the process in which the top layer of soil get removed. It involves the loosening of soil from earth’s surface at one location and moved to another location. It causes the filling of valleys, and make rivers appear and disappear as the soil moves from one location to another in the process of erosion.
Which of these is a base?
ammonia
HCI
vinegar
HNO 3
The correct answer is A. Ammonia