What three things are needed for a plant to
carry out photosynthesis?
Glucose, Oxygen, Sunlight
CO2, Oxygen, Sunlight
CO2, Water, Sunlight
Oxygen, Water, Sunlight

Answer:

The electrons in degenerate matter are compressed so closely together that they more-or-less behave as if the entire star is one huge quantum system. They form an electron gas, and behave very much like a highly pressurized fluid inside the star. (Protons and neutrons have their own quantum states, thank you.)

Answer:

They compress into neutrons.

Answer:

D. Nucleic acid

Explanation:

There are two types: DNA and RNA

DNA stands for Deoxyribonucleic acid

RNA stands for ribonucleic acid

Answer:

About 200 km 7.

DNA is approximately six times longer than it is wide after measurements.

DNA is a 2-nanometer-diameter double-stranded molecule. Rise per base pair is 0.34 nanometers. Divide length by width to calculate length-to-width ratio. The length-to-width ratio is 6:1 due to DNA's stable diameter and base pair distance. DNA is six times longer than broad.

DNA stores and encodes genetic information efficiently in this elongated shape. DNA molecules can range from a few hundred base pairs in bacterial genomes to millions or billions in sophisticated animals. DNA stores and transmits life's genetic blueprints because it's longer than it is wide.

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Answer: The function of NAD+ that is similar to that of NADP+ is that each NAD+ accepts a pair of high-energy electrons. Describe glycolsis in terms of energy input, energy output, and net gain of ATP. In glycolysis, glucose is converted to molecules of pyruvic acid. ... NAD becomes NADH.

Explanation: Hope this helps :)

Answer:

The phosphate groups allow the nucleotides to link together, creating the sugar-phosphate backbone of the nucleic acid while the nitrogenous bases provide the letters of the genetic alphabet. These components of nucleic acids are constructed from five elements: carbon, hydrogen, oxygen, nitrogen, and phosphorous.

Explanation:

Answer:

The asteroid crashed into the earth and made some water bodies violent

it is said that the asteroid was super huge and was capable of causing volcanoes, tsunamis, etc which took place all over the earth and extincted dinosours. But it is a little surprising that crocodiles who were also found at that time survived all this

Answer:

Probably the asteroid caused natural calamities

Cells require a structure that regulates the transfer of material in and out of the cell, and this structure is the cell plasma membrane, as substances can go in or out of the cell such as oxygen, water, etc.

The cell plasma membrane's purpose is to protect the cell from outside materials such as matrix proteins, pathogens, and so on, as well as to give the cell the proper shape and size, and at the same time it consists of many channels, pumps, etc. Through the channels, the substance can flow in and out of the cell plasma membrane, and the energy may or may not be needed for the movement.

Hence, cells require a structure that regulates the transfer of material in and out of the cell, and this structure is the cell plasma membrane, as substances can go in or out of the cell such as oxygen, water, etc.

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Answer:

Explanation:

Analogy refers to traits or structures like body shapes, fins which evolved independently that are similar in organisms that are not related by the same common ancestor. For example dolphins and shark have similar body structures like fins but they are unrelated. Whale and shark too. Whales are mammals, sharks are fish.

Homology refers to traits or structures

posses by organisms that are related by common ancestors. Example wolf and whales.....they are both mammals.

Answer:

The age of the mastodon tooth is about 40000 years.

Explanation:

The presence of carbon-14 decreases exponentially in time. Let consider half-life of Carbon 14 in 5000 years. If the mastodon tooth went through 8 half lives, then we estimate its age in 40000 years.

The age of the mastodon tooth is about 40000 years.

Answer:

This question lacks options, the options are:

A) An mRNA molecule is produced in the nucleus of the cell.

B) The ribosome attaches to the DNA to build a polypeptide

C) The resulting RNA molecule is a complement of the gene on the DNA.

D) The RNA molecules contains three nucleotides in a row whose bases form

a codon.

E) A polypeptide is synthesized based on the sequence of nucleotides on the tRNA molecule.

The answers are A, C and D

Explanation:

Transcription is the first process of gene expression whereby a mRNA is synthesized from a DNA template. Transcription, which occurs in the NUCLEUS, takes place in three stages namely: initiation, elongation and termination.

- Initiation involves the attachment of RNA polymerase to the DNA molecule, inducing the unzipping of the double stranded DNA.

- Elongation involves the synthesis of RNA strand by adding complementary nucleotides based on the ones read on the DNA strand.

- Termination signals the end of the transcription process.

Based on this question and the above explanation of the transcription process, the following pertains to transcription in the nucleus:

- mRNA molecule is produced in the nucleus of the cell.

- The resulting RNA molecule is a complement of the gene on the DNA.

- RNA molecules contains three nucleotides in a row whose bases form a codon.

The second answer from the top

Answer:

Well for the onion peel, since its a plant cell...it shall gain water from the solution as it has a lower water potentail,and hence increase in size, becoming turgid and tight, with the cell wall exerting pressure to stop it from bursting.

For the RBC, its an animal cell, and shall also gain water, but since there is no cell wall to support it, it shall soon gain so much water that it shall burst becuase of the pressure, through lysis, and shall die.

Note, the plant cell does not die.

Answer:

See the answer below

Explanation:

Homeostasis refers to the maintenance of relatively constant internal body processes. This is done in two ways

Negative feedback returns body processes back to normal after the process has been breached. An example is when the body temperature becomes too high or too low. At too high temperature, vasodilation of the skin's blood vessels occurs and more heat is lost to the surrounding from the skin, sweat is also produced by sweat glands and evaporation of the seat causes cooling. At too low temperature, vasoconstriction occurs leading to the conservation of more heat. The muscles also shake to generate more body heat

Positive feedback ensures that a breach of body processes reaches completion. An example is when a pregnant woman starts laboring. The increase in the amount of oxytocin in the blood leads to the contraction of the uterus consequently leading to the opening of the cervix. More and more oxytocin leads to more frequent and stronger contraction of the uterus untill the baby is born.

The expected genotype ratio is 1:3.

The genotype of an organism is the sum total of the gens that the organism received from its parents. The genotype determines the traits of an organism (phenotype).

Let the dominant gene be R and the recessive gene be r then we have a cross between RR and Rr. The expected genotype ratio is 1:3.

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Explanation:

The molecule is the smallest unit of the substance that retains its characteristic properties. The macromolecule is such a unit but is considerably larger than the ordinary molecule, which usually has a diameter of less than 10 angstroms (10−6 mm).

Answer:

The molecule is the smallest unit of the substance that retains its characteristic properties

The macromolecule is such a unit but is considerably larger than the ordinary molecule which usually has a diameter of less than 10 angstroms

Explanation:

Answer:

All the noble gases in group 18 of the periodic table are stable in nature because they have complete octet configuration.

they are:

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Hello. This question is incomplete. The full question is:

A student prepared two beakers with identical sprigs of a water plant as shown below. She placed Beaker A in the shade and the Beaker B beside a fluorescent lamp. She then systematically changed the distance from the beaker to the lamp. She counted the bubbles given off by the plants in each beaker.  

If the student later tested the bubbles collected in the test tube, What would she find they are made of?

Answer:

oxygen

Explanation:

The bubbles are oxygen and we can say that because this is the gas that plants release through photosynthesis. In this case, we can also confirm that the plant that was exposed to fluorescent light, showed more bubbles than the other plant, since the light allowed the photosynthetic rate of this plant to be higher, releasing more oxygen to the environment.

Answer:

Temperature, food, pollutants, population density, light and sound

Answer:

Proteins are responsible for shaping and growth of an organism.

Explanation:

The differences in proteins lead to different in traits because it is the protein that determines the trait. The gene's sequence is like language that instructs cell to manufacture a particular protein that is necessary for the growth and development of the organism. These proteins shaped the structure of organisms so we can say that difference in traits occur due to difference in their proteins.

Answer:

Answer:Displacement

Explanation:Displacement is the change in position of an object. The SI unit for displacement is the meter. Displacement has direction as well as magnitude. Distance traveled is the total length of the path traveled between two positions.

Answer: Plant cells only have chloroplast and a cell wall. Which is A and E.

The compact bone is hard and dense, but it is not solid; it is filled with holes and has small canals for blood vessels and nerves, which is a true fact as the compact bone is one of the dense bones present in the body.

Compact bone is a dense, hard bone tissue that provides structural support and protection to the body, and it is also involved in the storage of minerals, such as calcium, which is important for the strength and density of bones. Haversian canals are present in the compact bone and contain blood vessels, nerves, and other tissues that support the bone.

Hence, compact bone is hard and dense, but it is not solid; it is filled with holes and has small canals for blood vessels and nerves, which is a true fact as the compact bone is one of the dense bones present in the body.

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