The photos below show specialized cells of a plant.
Which function are these cells specialized for performing?

Answer:

C-Chromosomes

D- DNA

E- Gene

Explanation:

Answer:

By designing an experiment where the temperature on the thermometer is measured after a chosen (same) time interval when the thermometer is wrapped with the different  materials and placed in the freezer

Explanation:

Experimental design

Materials given: freezer, a thermometer, samples of materials

setup:

1. The freezer is put on and made to remain at a particular temperature, mimicking the winter season.

2. Next, different materials for the coat design with equal dimensions are used to rap the thermometer whose initial temperature has been recorded in the same pattern and the thermometer is placed in the freezer and left for a certain time, which is made constant for the different materials.

3. after the time, the final temperature on the thermometer is recorded.

Result interpretation

The temperature is expected to drop after the time in the freezer, but the material with the smaller change (drop) in temperature indicates that it traps more heat hence is the best material for designing a winter coat

independent variables: type of material used

dependent variables: temperature on the thermometer

control variables: time, dimensions of materials, temperature of freezer, pattern of wrapping.

European Exploration Study Guide

Why did European countries compete for power in North America?

Economic—Gold, natural resources, and trade

Religious—Spread Christianity

Competitions for empire and belief in superiority of own culture

What were the obstacles faced by the explorers?

Poor maps and navigational tools

Disease and starvation

Fear of the unknown

Lack of adequate supplies

What were the accomplishments of the explorations?

Exchanged goods and ideas

Improved navigational tools and ships

Claimed territories

What regions of North America were explored and settled by France, England, and Spain?

Spain: Francisco Coronado claimed the Southwest of the present-day United States for Spain.

France: Samuel de Champlain established the French settlement of Québec. Robert La Salle claimed the Mississippi River Valley for France.

England: John Cabot explored eastern Canada.

What regions were explored by Portugal?

The Portuguese made voyages of discovery along the coast of West Africa.

How did the American Indians and Europeans interact with each other?

Spanish

Conquered and enslaved American Indians

Brought Christianity to the New World

Brought European diseases to American Indians

French

Established trading posts

Spread Christian religion

English

Established settlements and claimed ownership of land

Learned farming techniques from American Indians

Traded with American Indians

American Indians

Taught farming techniques to European settlers

Believed that land was to be used and shared but not owned

Answer:

Specialized cells are the cells though they are similar, but cells differ in size, shape and depending upon their function in body.

Example of specialized cells are: Blood cells, Nerve cells, Reproductive cells.

Tissues are made up of specialized cells, those tissues make up organs, organs make up system and systems make up bodies.

Answer:

The rock cycle describes the way that rock material cycles through Earth's crust.

All  rocks start out as lava or magma that cools into igneous rock.

Explanation:

The Rock Cycle is a process in Earth's crust of creating and forming different types of rocks. Through this process, three primary rocks are formed: Igneous rock, Sediment rocks, and metamorphic rocks.

From the given statements, the statements which are not true about the rock cycle are:

First one, the rock cycle does not desrcibe the way rock material cycles through Earth's crust but it is a process which creates and transforms different types of rocks.

Second statement is also wrong, because only igneous rocks starts out as lava or magma.

Therefore, statement first and second are not true.

Answer:

The correct answer is -

The control group: the group of people with no supplements and kept inside.

The dependent variable: Vitamin D level in all groups.

The independent variable: the source of vitamin D (sun or tablets)

Explanation:

The control group of any experiment is the group of subjects that did not receive any type of treatment or did not manipulate by the independent variable. Here the group of 30 people that kept inside and did not get supplements is the control group.

The independent variable is a variable that directly affects the dependent variable by a change in the independent variable. In this experiment, the sunlight and vitamin D tablets are independent variables that affect the vitamin D level in people.

The dependent variable is a variable that is affected by the independent variable or depends on the independent variable, vitamin level is the dependent variable.

Answer:

because they reduce interspecific competition

Explanation:

Narrower niches are known to be more specific and limited compared to broader niches, which are generally less specific and less limited. The species that live in broad niches are named generalists because they are able to withstand different conditions. A narrow niche is often correlated with reduced overlap and thus tends to reduce interspecific competition. For example, coral reefs consist of a wide variety of species (including anemones, sea sponges, sea fans, brain corals, etc) which have narrow niches, thus showing high biodiversity.

Answer:

B: warmer objects to cooler

Explanation:

Cooler objects will absorb the heat from any warmer object it comes into contact with.

Answer:

Allison and Robert should request a No-Knock Warrant.

Explanation:

A search warrant is a legally binding document that must be acquired by law enforcement officers or investigators before they can open up, enter and search a building. There are various types of search warrants.

Standard search and seize warrants require that law enforcement officers have to identify themselves and allow the occupant a significant amount of time to react. They'd have to knock or ring the doorbell in this situation.

Because law enforcement agents began to see the continued destruction of evidence before they got in, it necessitated the design of another kind of search warrant - the No-Knock Warrant.

By comparison, Allison and Robert will enter the suspect's house violently without advance warning with a No-Knock Warrant, so that if there is any evidence that can be used against the suspect, they will confiscate and protect it to prevent it from being destroyed.

Other types of warrants are:

Cheers

Answer:

c. not be able to split water to provide NADH.

Explanation:

Photosynthesis, which is the process by which plant species obtain their energy, occurs in two stages viz: light dependent phase and light independent phase. The light dependent phase of photosynthesis requires the energy from sunlight, which is captured by the chlorophyll pigments in the leaves of the plant.

The light energy captured by the chlorophyll is used to split water molecule in a process called PHOTOLYSIS OF WATER. Overall, ATP and NADH (electron donor) are products of the light dependent stage, which enters the next stage to complete the photosynthetic process.

Therefore, a plant that was grown in the dark i.e. no access to light, continuously would not be able to capture light energy and hence not be able to split water to provide NADH.

A plant that was grown in the dark spontaneously would not possess the tendency to split water to provide NADH.

The process by which the species of plant attain their energy, that is, photosynthesis, takes place in two stages:

In the light dependent phase, energy is needed from sunlight, and is captivated by the chlorophyll pigments present in the leaves of the plant. This energy from the light is used to split the molecule of water by a process known as photolysis of water.

The products of the light dependent stage is ATP and NADH that enters the next phase to complete the process of photosynthesis. Therefore, a plant, which was grown in the dark, that is, having no accessibility to light, would not possess the tendency to captivate the energy from the sunlight and thus would fail to split the molecule of water to provide NADH.

Thus, the correct answer is option c.

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Answer:

Scientists have determined that humans are disrupting the nitrogen cycle by altering the amount of nitrogen that is stored in the biosphere.

Explanation:

Answer:

About 0.6 cm 5.

Explanation:

Answer:

को 'वीर सिपाही' क्यों कहा

Answer: Rhinocerotidae

Explanation:

Rhinocerotidae

"A rhinoceros (from Greek rhinokerōs 'nose-horned', from rhis 'nose', and keras 'horn') commonly abbreviated to rhino, is one of any five extant species of odd-toes ungulates in the family of Rhinocerotidae, as well as any of the numerous extinct species therin." -Wikipedia

Answer:

A. Biocontrol

Explanation:

Integrated pest management includes biocontrol.

Biological control or biocontrol is a method of controlling pests, such as insects, mites, weeds, and plant diseases, using other organisms. It relies on predation, parasitism, herbivory.

The four major ways are by what has been called Augmentive Biological Control, Classical Biological Control (otherwise known as Inoculative Biological Control), Inundative Biological Control, and Manipulative Biological Control.

Biological control can either be less or more expensive than pesticides. You can incur significant expense studying, choosing, testing and breeding a bioagent.

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Answer:

Plants get their nitrogen indirectly from the air via microorganisms in the soil and in certain plant roots.

Answer:

Microorganisms and certain plant roots in the soil

Explanation:

"Plants get the nitrogen that they need from the soil, where it's already been fixed by bacteria and archaea. Bacteria and archaea in the soil and in the roots of some plants have the ability to convert molecular nitrogen from the air (N2) to ammonia (NH3)... Such organisms are called "diazotrophs". From here, various microorganisms convert ammonia to other nitrogen compounds that are easier for plants to use. In this way, plants get their nitrogen indirectly from the air via microorganisms in the soil and in certain plant roots."

I hope this helps...

Answer:

From 280 ppm to 393 ppm.

Explanation:

In 1750, the amount of carbondioxide in the atmosphere was 280 ppm which increases by 393 ppm in 2012. This is because of the pollution occurs due to industrialization and number of vehicles increased in the world. More carbondioxide gas is released due to the smoke produced from burning of fossil fuels in industries and vehicles. So we can say that pollution is the main reason for increasing carbondioxide concentration in the atmosphere.

Answer:

Locally, particularly off the coast of North Carolina, the Gulf Stream can affect water temperatures, providing warmer ocean waters and balmy days, even in the height of fall and winter.

Explanation:

The Gulf Stream affects the air masses above ocean water by:

The Gulf Stream is known as the strong current which occurs along the coast of Florida where there are warmer temperatures in the cold seasons and cooler temperatures in the warm seasons.

As a result of this, the Gulf Stream affects the air masses which are above the ocen water by making sure that the weather is more pleasant no matter the season of the year and it has also extended to parts of Europe.

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Answer :A chromosome is a long DNA molecule with part or all of the genetic material of an organism. Most eukaryotic chromosomes include packaging proteins called histones which, aided by chaperone proteins, bind to and condense the DNA molecule to maintain its integrity. These chromosomes display a complex three-dimensional structure, which plays a significant role in transcriptional regulation.

Explanation:

Answer:

True

Explanation:

Answer:

Protons, neutrons, and electrons: Both protons and neutrons have a mass of 1 amu and are found in the nucleus. However, protons have a charge of +1, and neutrons are uncharged. Electrons have a mass of approximately 0 amu, orbit the nucleus, and have a charge of -1.

Explanation:

The nucleus contains protons, neutrons, and electrons, each of which has a mass of 1 amu. Neutrons are uncharged, while protons have a charge of 1.

Thus, Electrons circle the nucleus, having a mass of about 0 amu, and a charge of -1.

Atomic mass of a proton: A proton's atomic mass is about equal to 1.007276 atomic mass units (u), or 1.007276 amu.

Neutron: A neutron has a slightly larger atomic mass than a proton. About 1.008665 u or 1.008665 amu is what it is. Electron: Compared to a proton or neutron, an electron has a substantially lower mass. An electron has a mass of roughly 0.00054858 u or 0.00054858 amu.

Thus, The nucleus contains protons, neutrons, and electrons, each of which has a mass of 1 amu. Neutrons are uncharged, while protons have a charge of 1.

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Answer:

no

Explanation:

Answer:

D

Explanation:

The Natives of the North American Southwest produced an abundance of basalt sculpture.

The Natives of the North American Southwest producing an abundance of basalt sculpture is False.

This is defined as the use of the igneous rock known as basalt to carve and shape objects.

The natives of the North American Southwest didn't produce an abundance of basalt sculpture due to lower quantity of basalt in the region which is why option D was chosen.

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Answer:18%

Explanation:18x2=36 +64=100

Answer:

b

Explanation:

i took the test

Answer:

True

Explanation:

Mutation is any change that occurs to the nucleotide sequence of a gene. Mutations can be of different types including: deletion, insertion, substitution etc.

Deletion mutation refers to the removal of one or more base from the nucleotide sequence while substitution mutation refers to the replacement of one or more nucleotide bases.

DELETION of a single base in a gene would alter the structure of the gene’s protein more than the substitution of one base for another. This is because deletion mutation can cause the reading frame of the nucleotide sequence to change, leading to a SHORTER STRUCTURE of protein.

Answer:

Explanation:

One major characteristic used to identify bacterial species is by Gram staining. This makes bacteria to be classified into two broad classes; Gram positive bacteria (appear purple after stain) and Gram negative bacteria (appear pink after stain).

Another characteristic used is the presence or absence of capsule.

Other characteristics include there motility (which can be due to the presence of flagella), bonding tendency (which can be individually or in pairs) and also pathogenic bacteria can be classified as intracellular or extracellular bacteria.

Answer:

16 feet, 20 feet, and 12 feet

Explanation:

Uppercase allele = 6 feet

Lowercase allele = 2 feet

First, let us look at the outcome of the cross between AaBB and aaBb.

      AaBB     x     aaBb

Progeny:

4 AaBB = 6+2+6+6 = 20 feet

4 aaBB = 2+2+6+6 = 16 feet

4 AaBb = 6+2+6+2 = 16 feet

4 aaBb = 2+2+6+2 = 12 feet

The heights expected in the progeny are 16 feet, 20 feet, and 12 feet.

Answer:

yeah the first one

Explanation:

just because