Please Help Me ! I don’t Know

Answer:

When water moves from low concentrations of solute to high concentrations of solute, it moves from high concentrations of water to low concentrations of water.

Answer:

I didn't understand the question..but here is the definition

Explanation:

Definition of Stelar System:

According to the older botanists, the vascular bundle is the fundamental unit in the vascular system of pteridophytes and higher plants. ... Thus the stele is defined as a central vascular cylinder, with or without pith and delimited the cortex by endodermis.

Answer:

Refrigeration in Food Preservation and Processing ... The aim of all food preservation methods is to slow down processes that cause deterioration of quality and wholesomeness. Refrigeration applications are equipment that transfers heat from the product or enclosure (refrigerated cabinet or room) to the colder refrigerant.

Answer:

The aim of all food preservation methods is to slow down processes that cause deterioration of quality and wholesomeness. Refrigeration applications are equipment that transfers heat from the product or enclosure (refrigerated cabinet or room) to the colder refrigerant

Explanation:

Answer:

chemicals

Explanation:

The nose and the tongue are two of the five sensory organs (others being skin, eyes, ears). These organs contain certain cellular structures called SENSORY RECEPTORS, which respond to different stimulus in the environment.

Nose and tongue are two organs that possess a type of sensory receptor called CHEMORECEPTORS. Chemoreceptors are receptors that respond to chemical stimuli. In other words, the receptors in the nose and tongue are stimulated by chemical substances e.g. food chemicals for TONGUE, chemicals in air for NOSE.

Answer:

wind causes by unequal heating of the earth

Explanation:

Because,ocean currents are driven by wind, water density differences and tides.Oceanic currents discribe the movement of water from one location to another.

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Any infectious disease (genetic, bacterial, and viral) can be prevented by vaccinations. Therefore, option D is correct.

Vaccinations are primarily designed to stimulate the immune system and provide protection against specific pathogens that cause diseases. They work by introducing harmless components of the pathogen, such as inactivated or weakened viruses or bacteria, or their components (antigens), into the body.

This exposure allows the immune system to recognize and mount an immune response against the pathogen without causing the actual disease.

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Answer:

Both parents

Explanation:

Punnett squares will show that for each trait (eye color, hair color, hair type, etc.) there are at least 3 different options (for a 2x2 Punnett square). I've also seen 4x4 Punnett squares where two traits are used.

Answer:

Chloroplasts?

Explanation:

search it up

Answer:

Vacuole <Mitochondria

Explanation:

Answer:

Of is your answer

Explanation:

Answer:

False

Explanation:

Answer: C

Explanation:

A specific DNA segment is amplified via PCR from a complicated combination of starting material, commonly referred to as template DNA, hence option C is correct.

The reaction's simplicity and the relative case of the practical manipulation procedures are what's behind it. The reaction needs some knowledge of the flanking DNA fragment's sequence in order to be amplified.

Taq polymerase is the name of the heat-tolerant bacterium from which the DNA polymerase normally used in PCR was derived (Thermus aquaticus). T. aquaticus resides in hydrothermal vents and hot springs.

The primers are used in accordance with the sample or target DNA. The procedure, which entails numerous cycles in which copies are created, likewise uses DNA and Taq polymerase.

Therefore, the three fundamental phases are "denaturation," "annealing," and "extension."

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Answer:

100% will be black

Explanation:

black is a dominant trait

Answer:

The correct answer is -

Two methionine amino acids will be in the protein chain.

The protein will have five amino acids.

Explanation:

In protein synthesis, there are mRNA codons made up of the three bases known as triplet codons that form a specific amino acid during translation. There is a specific codon known as the starting codon that is AUG present at the beginning of almost every protein sequence and code for the methionine amino acid. UAG, UGA, and UAA are the stop codons if present at the end of the mRNA sequence and if any of these stop codons are present at the end of the sequence they do not produce any amino acid.

In this case, the mRNA sequence having 6 triplet codons AUG CCC UUU AUG GGG UAA where the first AUG is a start codon and code for the methionine and UAA is a stop codon and do not code for any amino acid therefore, the protein would carry only 5 amino acid and as there are two AUG so it has two methionine.

Answer:

Two methionine amino acids will be in the protein chain.

The protein will have five amino acids.

Explanation:

just took test

Answer:

Explanation:

Secondary energy resources are those which do not occur naturally but which are obtained from one or more of the primary energy resources. Example: Petrol or gasoline, electrical energy from coal burning, hydrogen obtained by electrolysis of water etc. Non-commercial source of energy: Firewood, cow dung , and vegetable wastes.

Answer:

True

Explanation:

Answer:

Your circulatory system carries oxygen, water, and nutrients to cells throughout your body. Wastes from the cells are eliminated by your respiratory system, your excretory system, and your skin. Your nervous system controls all these activities with electrical impulses.

Answer:

The answer is B: been reduced three fold and the population is experiencing genetic drift

Explanation:

I took the exam.

Answer:

C: The frequency of b has been reduced three-fold. The population is experiencing genetic drift.

Explanation:

I just took the test

Answer:

Explanation:

Boil a pot of water that has been tested with a stainless steel dish that sits adequately on top of the pot, without falling in. When the water boils, turn off the stove, which eliminates the ignition source, then pour your ethanol into the bowl, and place it on top of the hot water pot

Answer:

Boil a pot of water that has been tested with a stainless steel dish that sits adequately on top of the pot, without falling in. When the water boils, turn off the stove, which eliminates the ignition source, then pour your ethanol into the bowl, and place it on top of the hot water pot.

Explanation:

Answer:

B - by comparing DNA from the blood cells with DNA from suspects!

Explanation:

DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal investigation.

A DNA sample taken from a crime scene is compared with a DNA sample from a suspect.

If the two DNA profiles are a match, then the evidence came from that suspect. (from www.genome.gov )

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A forensics expert has obtained a sample of human blood from a crime scene, DNA fingerprinting may be useful by comparing DNA from the blood cells with DNA from suspects, which is option B.

DNA fingerprinting is a technique used to identify individuals based on their unique DNA profiles, and by analyzing the sequence of nucleotides in an individual's DNA, forensic scientists can create a DNA profile that is unique to that individual. So to identify the person who left the blood at the crime scene, forensic scientists would analyze the DNA in the blood sample and create a DNA profile, and then find out the criminal based on the DNA fingerprinting.

Hence, DNA fingerprinting may be useful by comparing DNA from the blood cells with DNA from suspects, which is option B.

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Answer:

D)clues about the past climate of Earth

Explanation:

The fossil record certainly has gaps, mostly because the conditions required to create fossils have been rare ever since life began on Earth. A very small percentage of animals that have lived and died ever became fossils. Thus, many pieces of the puzzle are missing; some will never be found.

Explanation ProjectSupreme:

It is the food chain going down to envole.

Answer:

what is a food chain?

Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism

seaweeds -----> crabs ------>herons

step-1: A food chain always starts with a producer This is an organism that makes its own food Most food chains start with a green plant because plants can make their food by photosynthesis

step-2: Second step of a food chain always starts with a omnivore or herbivore  

herbivores

A herbivore is an animal that gets its energy from eating plants and only plants. Omnivores can also eat parts of plants but generally only the fruits and vegetables produced by fruit bearing plants

omnivores

An omnivore is an animal that has the ability to eat and survive on both plant and animal

step-3: Third step of food chain carnivores or omnivores

carnivore

carnivore meaning "meat eater is an animal whose food and energy requirements derive solely from animal tissue or meat

omnivores

An omnivore is an animal that has the ability to eat and survive on both plant and animal

Explanation:

Answer:

B Pyroclastic flow

Explanation:

Answer: A

Explanation: ap3x

Biomass energy is different from wind energy, as biomass energy emits a large volume of greenhouse gases. The correct option is A.

Biomass energy is the energy that is produced by the living organism. This energy is produced by decaying organic matter or burning organic matter.

This biomass energy is produced by burning of matter, which produces pollution, but wind energy does not produce energy.

Thus, the correct option is A. Biomass energy emits a large volume of greenhouse gases.

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Answer:

The kingdom Plantae consists of four major plant groups on land: bryophytes (mosses), pteridophytes (ferns), gymnosperms (cone-bearing plants), and angiosperms (flowering plants). Plants may be categorized as vascular or nonvascular. A vascular plant has tissues for transporting water or sap. Nonvascular plants do not.

Answer:

Air without Oxygen.

This is air with a mixture of gases hence less oxygen

Explanation:

The energy in matter can change, or_transform___

from one form to another.

Matter and energy interact during the process of_producers______

The Sun's

_.radiant energy

is transformed into_chemical energy_______

Since plants have the ability to convert the Sun's radiant energy

into food, they are called

_photosynthesis__

Answer:

true

Explanation:

The fatty acid chains are the uncharged, nonpolar tails, which are hydrophobic. Since the tails are hydrophobic, they face the inside, away from the water and meet in the inner region of the membrane.

The statement "the tail portion of the phospholipid molecule is hydrophobic" is definitely true.

Phospholipid may be defined as an amphipathic molecule that is constructed from four components. They are fatty acid, a platform to which fatty acids are attached, a phosphate, and an alcohol attached to the phosphate.

The molecule of phospholipid has a polar head and a non-polar tail. The polar head is known as hydrophilic and a non-polar tail is known as hydrophobic.

Such types of tails move away with water, hence they are significantly found at the inner side of the membrane and form a type of barrier.

These tails of phospholipids are typically uncharged which expel water and separates the internal contents of the cell from its outer environment.  

Therefore, the statement "the tail portion of the phospholipid molecule is hydrophobic" is definitely true.

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Answer:

Red bacteriophage = virus

Red circle = DNA/RNA

Hope that helps!

Answer:

B. First Bacteria

Explanation: