Need quick please thanks

Answer:

1. a

2. b

3. d

4. a

5. b

6. d

7.b

8. im not sure abt this one, sry :(

9. yeah, true

10. c

Explanation:

Pro phase is the starting stage of the division where the cell division begins. Spindle fibers  are broken into half and the type of division that is present in gametes is reduction division that is the meiosis. Synapsis occurs during mitosis.

It is defined as the stage in which the pairing of the homologous chromosomes take place.

Chromosomes do not line at the equator as the lining of the chromosomes at the equator occurs on the stage of mitosis where it is possible to see the V,J and L shapes of the paired chromosomes. After this stage the exchange of genetic material takes place.Chromatin do not change into chromosomes in the metaphase.

Mitosis is present only to make the duplicate copies of the cell. The identical daughter cells are made when the division of mitosis is taking place in the cell. Chromosomes are first visible in the prophase. A centromere holds two sister chromatids together.

In meiosis crossing over takes place in anaphase 1.

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Answer:

Answer below !

Explanation:

1. Cell's

2. Tissue's

3. Organ's

4. Organ system

5 . Organism's

Answer:

c

Explanation:

Answer:

The correct answer is - Archaea.

Explanation:

Archaea is one of the three domains of life other than bacteria and eukarya. Archaea are prokaryotic organisms that are unicellular and present in very extreme conditions like salt environments or extreme heat.

Archaea used to be placed with bacteria but due to some closeness with the characteristic of eukarya as well as bacteria, it is placed as a separate domain. It lacks nuclei and has a cell wall in its cell.

Benefits of selective breeding:

Variation

Longer life span for bred animals

Less harm to surrounding organisms (for example, humans)

More food (plant breeding)

Faster growth (plant breeding)

Answer:

D) Angiosperm

Explanation:

I hope this helps :) Tell me if I am wrong

Answer:

Rough ER - modifying lipids

Explanation:

Rough ER does not modify lipids! Smooth ER does that! Hope this helps :)

Answer:

A?

Explanation:

All waves carry energy from one location to another, but they do not move any physical objects. The energy is transferred from one particle to the next, which then oscillates as well. Thus, option A is correct.

The vibration of particles, which transfers energy in waves, causes the particles to travel perpendicular to the wave's horizontal movement. As the particles transition from rest to movement and back to rest, energy is changed between potential (stored) and kinetic (moving) energy.

However, waves do not move mass. By colliding with one another and exchanging energy, the particles “participate” in the wave. Because of this, energy can be transferred even when the particles' average positions remain unchanged.

Therefore, The thing that makes a wave is that it transport energy from one place to another.

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Answer:b

Explanation:

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Matter is anything that has mass and takes up space. It includes molecules, atoms, fundamental particles, and any substance that these particles make up. Matter can change form through physical and chemical changes, but through any of these changes matter is conserved.

In other words, matter doesn't change into a different substance in a physical change. ... Changes of state—for example, from solid to liquid or from liquid to gas—are also physical changes. Some of the processes that cause physical changes include cutting, bending, dissolving, freezing, boiling, and melting.

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Answer:

In immunology, an antigen is a molecule or molecular structure, such as may be present on the outside of a pathogen, that can be bound by an antigen-specific antibody or B-cell antigen receptor. The presence of antigens in the body normally triggers an immune response.

Answer:

1. true

2. false

3. true

4. sneeze, cough

5. children, adolescents

Explanation:

NERVOUS SYSTEM INFECTIONS

FULL QUIZ ANSWERS:

1. Tetanus is caused by polluted drinking water.

FALSE

2. Tetanus can occur in crushing or deep wounds.

TRUE

3. Communication for the senses and muscle coordination in the body is accomplished by the __________ system.

NERVOUS

4. Inflammation of the membrane linings of the spinal column or the brain is called ________________.

MENINGITIS

5. Meningitis most frequently affects:

CHILDREN

ADOLESCENTS

6. Muscle spasms and locked jaw, followed by convulsions, are symptoms of:

TETANUS

7. Vaccines have been produced to prevent and treat both tetanus and meningitis.

TRUE

8. Chlostridium tetani thrives near the surface of the skin.

FALSE

9. Why is tetanus associated with injuries which occur outdoors?

BACTERIA IN THE SOIL CAUSES TEANUS

10. Meningitis may be transmitted from one person to another by:

SNEEZE

COUGH

Answer:

Mutations leading to the better attachement of virus to the host cell would allow the virus to spread the infection and leave more progeny. The reproductive fitness of mutant viruses would allow the mutation to spread.

Explanation:

1. The organisms with same resource requirement compete with each other. Viruses are not living things but once inside the host cell, they behave like living things. Rapid multiplication of virus overpopulate the host cells.

2. Genetic variations are added to the viral progeny by random errors during replication of the viral genome. These random variations may  impart beneficial trait, harmful feature or remain neutral. If a random mutation in the SARS-CoV2 virus allows it to adhere better to the cells of the respiratory system, the virus would be better able to infect these cells to spread the infection. Once inside the host cells, the mutant virus would leave more progeny. On the other hand, the wild type virus that lack this mutation would  have lesser chances of entering the host cells and may or may not replicate.

3. The progeny of the mutant virus would compete better with the non mutant ones due to the presence of same mutation.

4. Differential reproduction and more progeny of the mutant virus would spread the mutation among the virus.

Answer:

Isnt it 0?

Explanation:

Answer:

D. Lipids

Explanation:

A biological molecule that is made up of glycerol and fatty acids is known as Lipid. Thus, the correct option is D.

Biological macromolecules may be defined as those large and organic molecules that are important to biophysical processes. It includes carbohydrates, lipids, proteins, and nucleic acids.

Nucleic acids are derived from a pentose sugar, a phosphate group, and a base. Protein is derived from their monomers known as amino acids. Carbohydrates are derived from monosaccharides units such as glucose. It includes carbon, hydrogen, and oxygen.

Triglycerides are a simple form of lipids that are constructed with the help of one molecule of glycerol while three molecules of fatty acids.

Therefore, a biological molecule that is made up of glycerol and fatty acids is known as Lipid. Thus, the correct option is D.

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Answer:

C

Explanation:

ecosystem is living AND non living things

The best definition of an ecosystem is option C: "A system formed by the interactions of living organisms with the nonliving physical environment."

An ecosystem is a community of living organisms, such as plants, animals, and microorganisms, interacting with each other and their nonliving environment, including the atmosphere, soil, and water.

This interaction creates a functional system that can be characterized by energy flow and nutrient cycling. The other options are not accurate definitions of an ecosystem, as ecosystems involve both living and nonliving components, and the interactions are not limited to a single species.

Ecosystems are not isolated, and they can interact with other ecosystems. For example, rivers and streams can transport nutrients and organisms downstream, connecting different ecosystems such as a forest and a freshwater system. Similarly, the atmosphere can transport pollutants and other materials across vast distances, affecting ecosystems far from their source.

In summary, an ecosystem is a complex, interconnected system where living organisms interact with each other and the non-living components of their environment. Understanding the functions and interactions within ecosystems is critical to developing effective management strategies for conserving biodiversity and maintaining the ecosystem services that humans depend on.

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Answer:

Example of potential energy being transformed into kinetic energy  will be; Holding a ball in your hands and then throwing it down a hill. The move of the ball as being transformed to kinetic energy.  

Explanation:

Potential and kinetic energy are two forms of energy that can be converted into each other.   Potential energy is the energy held by an object because of its position relative to other objects or its electric charge. While kinetic energy of an object is the energy that it possesses due to its motion.

Answer:

Interesting

??

Answer:

the moles of oxygen react only 1.05 moles

Explanation:

because the formula of methane is CH4 so it has 10 molecule so 10.5 ÷10 =1.05

Answer:

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Answer:

Explanation:

Animal experiments may result in clinical trials of biologically faulty or even harmful substances, thereby exposing patients to unnecessary risk and wasting scarce research resources. Animal toxicity studies are poor predictors of toxic effects of drugs in humans.

Answer:

Experimenting with animals is not justified with anything, they practically play with beings that have life, emotions and that feel pain like all living beings.

Advances the experiments that are done on them, are not used, or the purpose is simply lost, as well as their life.

Answer: 50%

Because there are different systems in the body to prevent diseases, however chromosome diseases are usually hereditary so there is about a 50% chance that the child may be affected by this disease.

Huntington's disease is a dominant chromosomal disorder, when a woman who is heterozygous marries a man who is normal, then the probability for the child to be affected is 50%.

Huntington's disease is a rare genetic disease which causes the progressive breakdown of neurons present in the brain. Huntington's disease has a wide impact on a person's functional abilities and results in movement, cognitive thinking and psychiatric disorders.

When a woman who is heterozygous (Hh) for Huntington's disease marries a man who is normal (hh) for the disease, the probability of the offspring to be affected with the disease can be calculated with the help of Punnett square. And, it will be 50%.

The Punnett square is attached with the answer.

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Answer:

White blood cells (WBCs) are specialized to respond to antigen and produce antibodies as well as undergo phagocytosis in response to toxic stimuli.

WBCs are part of immune system and there are five different kinds with specialized features.

In order to make a cell model, it is best to use a muscle cell and a nerve cell or neuron: there are pronounced structural differences and those are present throughout animal kingdom.

Lower animals ( such as insects, worms etc. ) have different immune system, however, they do have typical neuron and a muscle cell/skin cell (fibroblast). Such cell models are likely to be easy, distinct and bring you good grades without going through much complication and confusions of various organ systems and animal mod

Explanation:

Answer:

huh is there any question

Explanation:

Answer:

should be b

Explanation:

Answer:

disagreements about climate change have prevented scientific from finding real solutions to global warming