Exhalation begins when
A. inspiratory muscles relax.
B. diaphragm contracts.
C. blood circulation is the lowest.
D. both A and B
E. all of the above

Answer:

TRUE

Explanation:

it’s true i just finished that worksheet

Answer:

A threat to the natural restorative nature of the water cycle is acid rain. Acid rain is caused by certain gas emissions in our atmosphere. Volcanoes release some of these gases naturally.

Explanation:

=)

Reflection and refraction of light are similar as they both involve changes in direction of light, however, refraction involves media of different densities whereas reflection occurs in mirrors.

A white T-shirt will feel cooler on a sunny day because it reflects light better.

The properties of light that define it as a wave include diffraction, reflection, and refraction.

Refraction of light refers to the property of light waves in which they change direction as they move between media of different densities.

When light waves are refracted, they either move away from the normal or move closer to the normal.

Refraction of light is applied in the construction of lenses.

Reflection of light occurs when light bounces off a surface when it hits that surface.

Reflection of light occurs when light hits shiny surfaces like mirrors.

Reflection of light is applied in the use of mirrors and is responsible for the choice of clothing during sunny or cold days.

Learn more about reflection and refraction at: https://brainly.com/question/785254

#SPJ1

Answer:

The Sun.

Explanation:

When energy from the Sun reaches the Earth, it warms the atmosphere, land, and ocean and evaporates water. The movement of water from the ocean to the atmosphere to the land and back to the ocean—the water cycle—is fueled by energy from the Sun. Changes in the energy cycle will ripple into the water cycle.

I would examine many kinds of living things under a microscope and look for the presence of cells.

Option B is correct.

Using an early microscope, Robert Hooke finds dead cells. In order to see living cells like bacteria, Anton von Leeuwenhoek creates a more potent microscope. All living things are composed of cells, and cells can be created from other cells, according to Matthias Schleiden and Theodor Schwann.

What kind of proof would at least one of the tenets of the cell theory be supported by? There are no cells in rocks or other nonliving substances. It has been found that cells change one type of energy into another. To observe nearly all cells, a microscope is required.

To know  more about cells visit:-

https://brainly.com/question/3142913

#SPJ1

Answer:

It is required that the seed region of the processed dsRNA molecule bind to the mRNA of mex-3  in order to inhibit its translation

Explanation:

Double-stranded RNAs are small interfering non-coding RNAs (about 20 nucleotides in length) that, after processing, can bind by complementary base pairing to RNAs and thus inhibit protein translation by a mechanism referred to as 'RNA interference' (RNAi). The base pairing is not always perfect; however, the guide strands of dsRNAs can conserve their ability to inhibit the translation if the complementarity is enough good to match target RNA sequences. The critical region in the dsRNA that is required to bind target RNAs is known as seed region, and consists of 6 to 8 nucleotides in length.

Answer:

chromosome material has already been copied

Explanation:  

The interphase is the previous step before mitosis occurs. The interphase is conformed of the G1, S, and G2 stages.

• During the S stage occurs the DNI replication process. At this point, also occurs the synthesis of histones and other associated proteins. This is the only stage where the DNI molecule is replicated.

• During the G2 phase of mitosis, sister chromatids are held together until they reach the Anaphase, during which other enzymes are activated to break the bonds and separate the chromatids.

• During the G2 phase of meiosis, sister chromatids and homologous chromosomes are held together by the cohesin proteins. Homologous chromosomes must be together until crossing over is completed, and cohesin proteins play an important role in making it possible. After the firsts stages of meiosis, sister Chromatids get completely separated in Anaphase II. During this phase it occurs the same as in mitosis, bonds break and chromatids get separated and go forward to each cellular pole.

• G2 stage is the final one before the cellular division. Here begins the slow process of DNI condensation. Duplication of centrioles completes. Structures such as spindle fibers are assembled.

Answer: D

Explanation:

The following are the dangers of climate change are

I. Disease carrying insects could multiply and spread to new areas.

III. Due to increased humidity, electricity would be harder to generate and more expensive.

IV. Severe droughts could occur.

The correct option is D.

Climate is the weather of a place for a long time. Like, the climate of Antarctica is always cold, and the oceans are always frozen. There are different climates in different areas.

Climatic changes are the long term effects that are changing the normal temperature and climatic conditions of an area. This is causing problems with the biotic factors of the area.

Like, the warming of Antarctica is increasing, which is resulting in the melting of ice, which can cause high floods.

Thus, the correct option is D. II, III, IV.

To learn more about climate, refer to the below link:

https://brainly.com/question/18784841

#SPJ5

We need 1 nanogram of plasmid in the transformation reaction when the transformation efficiency is given for 1000 colonies on plate P - 200.

Given the value of transformation efficiency (TE) = \(1 * 10^6\)

Number of colonies on the plate P-200 = 1000

To calculate the amount of plasmid (in nanograms) required for transformation, we need to first calculate the number of cells required for transformation.

To get desired number of cells we multiply the transformation efficiency and number of colonies given such that:

number of cells = \(TE (1*10^6) * 1000 colonies = 1 * 10^9 cells\)

Since 1 nanogram of plasmid is equivalent to \(1 * 10^9\) cells, we can conclude that we need to use 1 nanogram of plasmid in the transformation reaction.

To learn more about plasmid click here https://brainly.com/question/15461017

#SPJ1

The statement that is true about human society and limiting factors is "Modifications made to the environment to reduce the impact of limiting factors can cause disruption to the natural balance of an ecosystem." The correct option is A.

Limiting factors are the factors that limit the growth of populations. For instance, the limiting factors for humans might be a lack of food or water. Limiting factors may be biotic or abiotic. Abiotic factors include nonliving aspects like temperature and rainfall while biotic factors are the living aspects like predators and competition.

Modifications made to the environment to reduce the impact of limiting factors can cause disruption to the natural balance of an ecosystem. These modifications include the introduction of a new species, the clearing of land for agriculture or industry, or pollution.

The new species can lead to the elimination of the native species, the clearing of land can cause habitat loss, and pollution can have numerous effects like air and water pollution.

Therefore, the correct option is A.

Learn more about Limiting factors here:

https://brainly.com/question/6996113
#SPJ7

Because male creatures contain X and Y chromosomes, which are sex chromosomes, the law for dominance does not apply to them and they more susceptible to sex-related genetic diseases than female species.

Males only inherited one X chromosome, hence they only have one chance to receive the "good" allele because females contain two versions of an x-linked allele whereas males only carry one. Males are more likely than females to exhibit X-linked characteristics.

That's because X-linked diseases are typically brought on by a lack of functional copies of a gene found on the X chromosome. Males are born with just one X chromosome. Hence, they just require one malfunctioning .

To know more about chromosomes visit :

https://brainly.com/question/1596925

#SPJ1

Answer:

excess water from entering their bodies.

Explanation:

pf

Embryonated chicken eggs represents an in vivo method for cultivating viruses. (option c)

To cultivate viruses in a living system, an in vivo method is used. Among the options provided, embryonated chicken eggs are the most commonly used method for culturing viruses in a living organism.

HeLa cells: HeLa cells (a) are human cancer cells commonly used in laboratory research, but they are not a living organism suitable for virus cultivation.

Pure bacterial cell cultures: Bacterial cell cultures (b) are often used to study bacteriophages, which are viruses that infect bacteria. However, this method involves culturing viruses in bacterial hosts and does not involve a living organism.

Embryonated chicken eggs: Embryonated chicken eggs (c) are a widely used method for virus cultivation. In this method, viruses are injected into the developing embryo, which provides an environment for viral replication. The embryos provide a controlled and nutrient-rich environment for the viruses to grow and propagate.

Lung cell culture: Lung cell culture (d) involves growing lung cells in a laboratory setting. While this method can be used to study certain viruses, it is an in vitro (outside a living organism) method rather than an in vivo method.

In conclusion, the in vivo method for cultivating viruses among the options provided is embryonated chicken eggs. This method provides a living system in which viruses can replicate and propagate. (option c)

For more such questions on cultivating viruses, click on:

https://brainly.com/question/15000588

#SPJ8

Answer:you i am minon pituf an red

Explanation:

Answer:

Zygote

Explanation:

A zygote is a fertilized egg.

Answer:

zygote

Explanation:

they're correct !

It is widely believed that the host (in this case, a living thing) evolved before the virus in the process of evolution. Because viruses are required intracellular parasites that can only multiply inside a host cell, exploiting the host cell's resources and machinery to make new viral particles, this is the case.

So, it is possible that viruses evolved before bacteria, archaea, or eukaryotes (Figure 4; Prangishvili et al. 2006). The majority of biologists now concur that RNA, not DNA, made up the initial replicating molecules.

Like cell-based life, viruses go through natural selection and evolution, and the majority of them change quickly. Two viruses may swap genetic material when they simultaneously infect a cell.

To know more about intracellular visit:-

brainly.com/question/21506266

#SPJ9

Answer:

- Binomial nomenclature is a widely accepted naming system, which is used in the naming of living things. Multiple native names make it extraordinarily tough to establish an organism globally and maintain an observation of the variety of species. Thus, it creates quite a lot of confusion. To eliminate this confusion, a normal protocol came up. According to it, every organism would have one scientific title which might be utilized by everybody to establish an organism.

What is binomial nomenclature?

Binomial Nomenclature follows a universally accepted naming system, which is used to provide a scientific name to a known organism.

Binomial Nomenclature also known as the binary nomenclature.

It uses two-terms during the nomenclature of a specie (plants, animals, and living organisms) that is why it called two-term naming system.

The scientific name of an organism or binomial nomenclature consists of two words, such as the generic epithet and describes the genus and the specific epithet and refers to the species of the organism.

Both of this term is written in italic and the genus name is capitalized.

Binomial nomenclature was given by Swedish botanist and physician Carl Linnaeus. He also called the founder of modern taxonomy.

Carl Linnaeus described and classified thousands of species of plants and animals in his book Systema Naturae.In this technique, there are particular guidelines that are followed while naming organisms. This normal algorithm is relevant to plants and animals whereas giving them distinctive names inside a given system.There are two worldwide codes such as the International Code of Botanical Nomenclature (ICBN) deal with the biological nomenclature for plants and the International Code of Zoological Nomenclature (ICZN) deal with the biological nomenclature of animals.

These two codes agreed upon by all of the biologists over the world for the naming protocol. These codes ensure that every organism will get a selected identity and that identity is globally recognized.

Summary of the limitation binomial nominclature:

- Some of the main drawbacks of binomial nomenclature are: If two or more names are actually in use in compliance with the priority rule, the appropriate name will be used first and the other names will end up being synonyms because authenticity is synonymous with the senior.

Mendel had to prohibit self-pollination since he was only interested in the progeny of two distinct parent plants. The blooms of some of the plants used in his tests had their anthers removed.

After that, he manually pollinated them using pollen from other parent plants of his choosing. He removed a flower's male components, which contain the pollen, and then pollinated the remaining female parts with pollen from another plant.

In order to stop flowers from self-pollinating, they are "emasculated," or have their anthers removed.

Cross-pollination occurs when pollen from one species of plant reproduces another species of plant. A hybrid is the term used to describe the offspring produced by such a cross.

learn more about Mendel experiments

brainly.com/question/9080076

Answer: Site B

Explanation: I took the test。

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Earth is actually composed of three major parts or layers: the solid earth (which includes the parts near or at the surface, the asthenosphere and lithosphere), the atmosphere (the blanket of air that envelopes the earth), and the hydrosphere (the water parts, including ocean, streams and air moisture).

Hope it helps!

Brainliest pls!

Follow me! :)

Explanation:

connective tissue. The fixed and transient cells found in connective tissue. ... Collagen fibers - most are type I collagen (most abundant protein in the body) ... It provides tensile strength in multiple directions. slide.

Answer:

one can be a plant and the other an animal

The medical term for the definition "abnormal condition of stiffness in the joints" is "ankylosis."

1. Abnormal: The term "abnormal" refers to something that deviates from the normal or usual state.

2. Condition: In medical terminology, "condition" is used to describe the state or situation of a specific aspect of health.

3. Stiffness: Stiffness indicates the lack of ease or flexibility in movement or the resistance to motion in joints.

4. Joints: Joints are the connections between bones that allow movement and flexibility in the body.

5. Putting it all together: Combining these terms, the medical term that describes an abnormal condition of stiffness in the joints is called "ankylosis."

Ankylosis is a term used to describe a pathological condition characterized by the abnormal adhesion and rigidity of the joints. It is often associated with conditions such as rheumatoid arthritis, osteoarthritis, and other inflammatory joint diseases. Ankylosis can lead to restricted movement and loss of function in the affected joints. Treatment options for ankylosis aim to manage the underlying cause, reduce inflammation, and improve joint mobility. Physical therapy, medications, and in severe cases, surgical interventions may be recommended to alleviate the symptoms and restore joint function. It is important for individuals experiencing joint stiffness or limited mobility to seek medical attention for an accurate diagnosis and appropriate management of the underlying condition causing the ankylosis.

For more such questions on ankylosis, click on:

https://brainly.com/question/31219514

#SPJ8

Explanation:

ntz9,88=5 and that spice

honestly

Explanation:

I think it would end up being a black rat since black rats have more power then others.