Humans have 23 pairs of chromosomes (46 total). How many chromo-
somes would a human cell have? Draw one chromosome for each case

a. at the end of mitosis?

b. at the end of meiosis I?

c. at the end of meiosis II?​

Anaerobic respiration takes place in the fluid portion of the cytoplasm.

aerobic respiration takes place in the mitochondrial matrix or on the inside of the inner membrane of mitochondria

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Answer:

Interspecific competition

Explanation:

Competition between individuals of different species is known as interspecific competition. In such competition for a limited resource, organisms with suitable structural and behavioural adaptations survive while others without such adaptations may die out or migrate. Competition is severe if the ecological niches of competing organisms are close.

Answer:

No, a leucoplast and a chloroplast are not the same thing. In the context of the question you provided:

B) Chloroplast is the correct answer. Chloroplasts are the organelles found in plant cells responsible for collecting solar energy through photosynthesis and producing food (glucose) for the plant. Leucoplasts, on the other hand, are a type of plastid involved in storing nutrients rather than photosynthesis.

Answer:

C. is the correct answer.  Sea level, Pacific Ocean, 1955 to 1975.  

Explanation:

Letter C is the correct link because you are looking for the change in the height of an ocean over a 20 year period of time.

The reason for this is because A only has names of oceans, therefore wouldn't help you find the changes in height or the number of years.  B has volume, density, and temperature, but you are not trying to find the mass of the ocean.  Finally, D has the wind speed, pH, and salinity, and you are not looking for any of those.

Hope this helps!  PLZ Mark Brainliest and friend me, bro!  ;)

Answer: c. Sea levels, Pacific Oceans, 1955 to 1975

Explanation:

Answer:

MULTICELLULAR-means many cells whereas UNICELLULAR means one cell

Explanation:

Multicellular organisms have specialized cells forming tissues and organs, while unicellular organisms consist of a single cell.

Multicellular organisms are composed of multiple cells with different shapes and specific organization, forming tissues and organs. On the other hand, unicellular organisms consist of a single cell, like bacteria and amoebae, and do not have specialized tissues or organs.

Development in multicellular organisms involves producing various cell types and organizing them into tissues and organs, requiring a complex developmental process. In contrast, unicellular organisms do not have this level of cell differentiation.

Answer: Tightly wound chromosomes, composed of DNA, must unwind before replication. Cell replication splits a cell into two parts, both of which become new, fully functioning cells. Before this can happen, however, cells require a full complement of DNA for each of the new daughter cells that will form as a result of the split. Because of this, DNA makes a copy of itself in a process known as replication during interphase, a stage that occurs before cells divide.

Cell Phases: Mitosis is the process by which parent cells each divide into two identical daughter cells. However, this majority of the cell's time is spent in interphase, during which it performs normal metabolic functions necessary for the organism, such as manufacturing protein. DNA occurs during the S phase of interphase, sandwiched between the G1 and G2 phases. The cell uses checkpoint signals to ensure at the end of G1 that it is big enough to replicate and at the end of G2 to determine whether or not DNA replication has succeeded. If so, the cell can undergo mitosis, at which point DNA winds up tightly for easy transport during the process.

DNA Replication: Replication begins with DNA unwinding and unzipping, its two strands coming apart. While only one side is the “correct” code, containing the actual genetic information used to build the organism’s proteins, both can be the base for a new strand of complete DNA. The enzyme DNA polymerase matches up each base with the correlating base: adenine with thymine and guanine with cytosine. When each pre-existing base has been matched to a nucleotide, which also contains the sugar and phosphate of the DNA’s backbone, the strand is complete.

DNA copies itself during the - S phase (Synthesis phase) of Interphase.

Interphase is the metabolic phase of the cell cycle, in which the cell gets nutrients and metabolizes them, grows, replicates its DNA in preparation for mitosis, and conducts other "normal" cell functions.

Thus, DNA copies itself during the - S phase (Synthesis phase) of Interphase.

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Multiple choice test questions on theme of codominance and incomplete dominance:

1.Which among the following can be cited as an example of co-dominance?

Check all that apply

(a)Plant height in Mendel’s cross of a tall and short pea plant

(b)Pink roses formed by crossing red and white flowered plants

(c)Hazel eyes

(d)ABO blood grouping in humans

Solution (d)

2.Which among the following can be cited as examples of incomplete dominance?

(a)Roan fur in cattle

(b)Hazel eyes

(c)Pink roses formed by crossing red and white flowered plants

(d)ABO blood grouping in plants

Solution: (b),(c)

3. In co-dominance

(a)Both alleles of a gene are equally represented

(b)One allele is recessive to other

(c)Blending of two alleles results in the formation of  a third phenotype

(d) None of the given options

Solution: (a)

Answer:

The water cycle uses plants for uptake of water and transpiration from the surface, so that water can be sent to the atmosphere.  

Carbon cycle uses plants for uptake of CO2, by which it is removed from the atmosphere (and sent back to atmosphere when the plant is dead).

Explanation:

Both the cycles use plants as an integral component.  Both the water cycle and carbon cycle use subsurface for long term storage.  The water forms groundwater and can be stored for long duration.  Similarly, carbon is stored in rocks for long term.

A cell that has 14 chromosomes would have 2 diploid Daughter cells that each have 14 chromosomes after mitosis

Mitosis is a type of cell division that takes place in somatic cells. In this process, the parent cell divides into two identical daughter cells with the same number of chromosomes.

Thus, A cell that has 14 chromosomes would have 2 diploid Daughter cells that each have 14 chromosomes after mitosis

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Answer:

C: polysaccharide have more chemical bonds

Answer:

The answer is C.

C. Polysaccharide have more chemical bonds.

Explanation:

Explanation:

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells during cell division, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells. This process is known as mitosis, and occurs in cell division and growth processes. Two new nuclei are formed, along with identical cells. These are the same as the parent cell and the chromosome number (2n) is maintained.

In meiosis, the number of chromosomes (2n) is halved through meiotic divisions, producing 4 (n) germ cells or gametes (sperm or eggs), each containing half the number of chromosomes as its parent cell.

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Answer:

BIG BANG THEORY. i believe is your answer

Explanation:

It states that the universe is expanding every second. According to the theory the universe is becoming less dense.The big bang theory and the steady state theory are theories about the origin of the universe.

I hope this helps mate :)

Answer:

energy is released when a phosphate group to form ATP

ATP is created when a phosphate group and ADP interact. The answer is (a). An ADP molecule is composed of two hydroxyl group, a sugar chain (ribose), as well as the nucleotide adenine.

Bone and teeth are created with the help of phosphate. Additionally, phosphorus is a constituent of the a number of essential compounds, including those that the cell needs for DNA, cell membranes, and energy (deoxyribonucleic acid). Phosphorus is a mineral that the body gets from food and excretes in urine & occasionally stool.

A high phosphorus level is frequently an indicator of damaged kidneys. Cause kidney damage (CKD), particularly those with finished kidney disease, are more likely to experience it.

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Answer:

The atmosphere heats up as more and more carbon leaves other reservoirs and enters the atmosphere,

Explanation:

Answer:

The genes which code for proteins comprise of tri-nucleotides units which are termed as the genetic code. The translation of the genetic code results in the right kind of protein being formed.

The genetic code is important because it starts the transcription of the right kind of protein and ends it at the right time. Without the genetic code, it would be impossible to form the right kind of proteins. The process of transcription as well as translation would all go wrong due to absence of genetic code.

Answer:

Certain segments of DNA will be lost in the translation process, rendering certain genes obsolete in particular cells.

Explanation:

DNA, RNA, and environmental factors all play significant roles in cell differentiation. While DNA is identical in every cell, evert cell does not express the same genes. In different cells, some genes are turned "on" while others are suppressed or turned "off." The combination of genes expressed allows for cells to differentiate.

(Copied from USATESTPREP)

Maturation does not play a significant role in cell differentiation; rather, the process is governed by the selective expression of genes through transcription factors.

The factor that does not play a significant role in cell differentiation is maturation. Cell differentiation is a process where cells become specialized in their structure and function. This process is mainly influenced by the expression of specific genes through the action of transcription factors, which either promote or hinder the transcription of these genes. Factors such as differentiation, specialization, and modification are critical to this process, as they relate to how cells become distinct from one another and undertake specific roles within an organism. However, maturation, while part of the development process of an organism, does not directly dictate or influence the differentiation of cells in the same way that gene expression and transcription factors do.

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Answer:

Type of molecules in matter

Explanation:

Answer:

use search!

Explanation:

Answer:

Explanation: both prokaryotes and eukaryotes contain cell membrane

Answer:

Peptide bonds are formed between the amino acids.

Explanation:

Amino acids are linked with each other by the formation of amide bond in which one hydrogen atom is replaced by R group.

     A peptide linkage joins two amino acids by the elimination of one molecule of water.

Amino acids are joined together by peptide bonds to form proteins.

Amino acids are linked together via peptide bonds to form proteins. A peptide bond is a covalent bond between two amino acids that forms by dehydration synthesis, where a molecule of water is released. This bond is formed between the carboxyl group of one amino acid and the amino group of the incoming amino acid.

Evolution is sometimes a controversial:

Evolution is the most scientific explanation about how the life forms of earth originated and turned into the form that we see today.

I don’t think there should be a controversy because there is no other explanation that proves to be more logical than the theory of evolution. Evolution is a theory that has several supporting proofs and the theory itself was formed after several years of detailed study and observation.

I don’t think alternatives to evolution should be taught at schools. Alternative theories to evolution are based on various religious beliefs which lack a scientific basis.

Schools should be a place that enables students to do productive scientific thinking and teaching alternatives to evolution wouldn’t be a good idea.

Evolution is a process supported by scientific evidence, and controversies arise when religious or ideological beliefs clash with scientific explanations. Alternatives to evolution, such as creationism or intelligent design, should not be taught in science classrooms as they lack scientific basis.

Evolution:

Evolution is the process by which species develop and change over time through natural selection. It is supported by a vast amount of scientific evidence, including fossil records, genetic studies, and observations of evolutionary changes in real-time. While there are still some controversies surrounding certain aspects of evolution, the theory is widely accepted and taught in schools as the main explanation for the diversity of life on Earth.

Controversy:

There should not be a controversy about the theory of evolution itself because it is based on objective scientific evidence. However, debates and controversies can arise when religious or ideological beliefs clash with scientific explanations. It is important to distinguish between scientific controversies, which are resolved through evidence-based discussions, and controversies that arise from personal or faith-based beliefs, which cannot be proven or disproven through scientific methods.

Alternatives in Schools:

Alternatives to evolution, such as creationism or intelligent design, should not be taught in science classrooms as they are not scientifically rigorous or supported by empirical evidence. Science education aims to teach students about factual knowledge and the scientific method, and alternative theories that lack scientific basis do not meet these criteria. However, it is worth mentioning that topics related to religion and philosophy can be addressed in appropriate courses or discussions that focus on these subjects.

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Answer:

1.50 cal

Explanation:

Given data:

Mass of water = 300 g

Initial temperature = 20 °C

Final temperature = 25 °C

Calories needed = ?

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Solution:

ΔT  = T2 - T1

ΔT  = 25 °C - 20°C

ΔT  =  

Q = m.c. ΔT

Q = 300 g . 4.18j/g. °C . 5°C

Q = 6270 J

J calories:

6270 / 4184 = 1.50 cal

Answer:

15.0

Explanation:

Just trust me

Final answer:

Evidence of past glacial periods is found through Antarctic ice cores and biological indicators like foraminifera, as well as landforms left by ancient glaciers.

Explanation:

Scientists look for evidence of glacial periods in Earth's past by studying various forms of geologic and biological evidence. One of the primary methods is the analysis of Antarctic ice cores, which are long cylinders of ice drilled out from ice sheets and glaciers. These ice cores act as a historical record, preserving bubbles of ancient air and biological materials that provide data on past temperatures and carbon dioxide levels. Additionally, scientists study patterns of ε¹⁸O in the shells of foraminifera, microscopic organisms found in ocean mud, which reflect past ocean temperatures and ice volumes. Furthermore, evidence from ancient glacial landforms, such as those observed by Wegener near the equator, supports the idea of continental drift and indicates that glaciers once covered different parts of the planet.

Answer:

A saprophyte is a plant that does not have chlorophyll and gets its food from dead matter, similar to bacteria and fungi (note that fungi are often called saprophytes, which is incorrect, because fungi are not plants).

Explanation:

BRAINLIEST PLSSS :)

Answer:

Explanation:

Fish gills are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills that are protected under gill covers on both sides of the pharynx (throat).

Answer:

Its Gills

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Answer:

A gene is a small section of DNA on a chromosome that codes for a particular sequence of amino acids, to make a specific protein. It is the unit of heredity, and may be copied and passed on to the next generation.

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The section of a chromosome that controls a characteristic is called a gene.

Genes are specific sequences of DNA that contain the instructions for building and functioning of proteins, which are the building blocks of cells and play a crucial role in determining various traits and characteristics of an organism. Each gene is responsible for encoding a specific trait or characteristic, such as eye color, height, or blood type.

Genes are located on chromosomes, which are structures made up of DNA and proteins found within the nucleus of cells. They are organized along the length of the chromosomes and are passed down from parents to offspring through the process of reproduction.

Overall, genes are the fundamental units of heredity and are responsible for the inheritance and expression of traits in living organisms.

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Answer and Explanation:

Some pathogens and pests usually survive and reproduce even when they are exposed to the antibiotics and pesticides repeatedly. These instances show that within the population soe individuals possess the gene for resistance or acquire it through mutation hence survives the chemical. Those that survive transmit this characteristic to their offsprings thus establishing a new population of resistant forms.

No, her diet does not. She is currently eating 128.52 calories each for protein, 289.17 calories from fat, and 1,413.44 calories from carbohydrates. This means she is consuming 6.6% of her diet from protein, 14.9% of her diet from fat, and 73.2% of her diet from carbohydrates.

Answer: No, her diet does not. She is currently eating 128.52 calories each for protein, 289.17 calories from fat, and 1,413.44 calories from carbohydrates. This means she is consuming 6.6% of her diet from protein, 14.9% of her diet from fat, and 73.2% of her diet from carbohydrates.

Explanation:

they all have a highly developed brain