Which term describes a pure substance that is made up of only one type of atom?
matter
rock
compound
element

Answers

Answer 1

Answer:

Element

Explanation:

Answer 2

Answer:

Element

Explanation:

I took the test


Related Questions

NEED THIS ASAPPPPP
What role does the ocean plays in climate change ?

Answers

Answer:

erosion can shape the land , for example the Grand Canyon

Some bacteria live in the roots of plants like soybeans and peas.

Bacteria growing on plant roots.
What is the role of these bacteria in the nitrogen cycle?

Answers

Answer:

Nitrogen is the most commonly limiting nutrient in plants. Legumes use nitrogen fixing bacteria, specifically symbiotic rhizobia bacteria, within their root nodules to counter the limitation. Rhizobia bacteria convert nitrogen gas (N2) to ammonia (NH3) in a process called nitrogen fixation.

Answer:

to convert free nitrogen into usable nitrogen

Explanation:

on edge

Why element of the xylem in vascular bundle is less than the phloem?

Answers

Answer:

The element of the xylem in vascular bundle is less than the phloem because the Xylem carries water which is a raw material to manufacture the food.

Explanation:

A pair of xylem and phloem is termed to be a 'vascular bundle'.

The purpose of the Xylem tissue is to transport the water from the roots to the stems and leaves. Other compounds are also transported which are dissolved in the water. Phloem, on the other hand, helps in transporting food from leaves to other parts of the plant.

Please help! Will mark branliest if you help!

Answers

Answer:

13.

a) Diploid parent cell

b) Consists of interphase, prophase, metaphase, anaphase and telophase

14.

a) Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells

b) Mitosis Results in two daughter cells and meiosis Results in four daughter cells

Explanation:

A. Describe how C. parvum obtains the glucose it needs for glycolysis after it has infected another cell.

B. Explain the role of lactate dehydrogenase in enabling C. parvum to continue producing ATP by glycolysis.

C. Identify the independent variable used in the experiment.

D. Identify the difference between the control cells and the experimental cells used in the experiment.

E. Justify the use of a control in this experiment.

F. Justify the researchers using a different range of concentrations for FX11 than was used for gossypol.
G. Based on the data in Figure 1, Identify the concentration of gossypol that reduced C. parvum growth to 50% of that in control cells.
H. Researchers discovered a strain of C. parvum that expresses a functional variation of the lactate dehydrogenase gene. A DNA sequence comparison showed that the variant differs from the normal sequence in the region that codes for the enzyme’s allosteric site. Predict the effect of FX11 treatment on C. parvum that express this variant of lactase dehydrogenase.
I. Provide reasoning to support your prediction.
J. Explain how gossypol and FX11 might be used as drugs to treat C. parvum infections in humans without negatively affecting human cells.

Answers

Answer:dang

Explanation:

When can natural selection lead to evolution in a population?
A. If the environment of the population is stable and provides
resources
B. If the individuals in the population have very little genetic variation
C. If the population has unequal numbers of parents and offspring
D. If the frequency of the alleles for a trait in the population changes

Answers

Answer:

D

Explanation:

process of elimination

we'd want limited resources, genetic variation and parent-offspring ratio doesn't matter

Answer:

It’s D

Explanation:

In which environment would primary succession take place? Select 2 options.
an abandoned field
a cooling lava flow
a valley under a glacier
an unused farm
a deserted mine

Answers

Answer:the answer is B and C since there is no soil or life

Explanation: explanation is up there

Answer:

B and C

Explanation: I got the answer right on my test

All ______ contain a code for protiens.

Answers

Answer:

The answer is possibly genes.

Explanation:

The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.

Answer:

genes

Explanation:

Drag each label to the correct location on the map.


Identify the types of precipitation on the map. The color scale gives the rainfall amounts in inches.

Answers

The given question is incomplete as it lacks the map which is important, however the correct answer is attached:

Answer:

The correct answer is -

Top box (green area) - moderate rain,

Middle box (sky blue area) - light rain, and

Bottom box (red area) - heavy rain.

Explanation:

As per the map and the scale presented on the map that indicates the rainfall in inches. The green area indicates that the rain fall in this area is one inch which is moderate as the the sky blue rainfall measurement is .5 inches which is half. However, the red area is the highest rainfall area in comparison to both of these which is about four inches.

On the basis of these it we can label all three boxes as per their rainfall amount that is,

Top box (green area) - moderate rain,

Middle box (sky blue area) - light rain, and

Bottom box (red area) - heavy rain.

Answer:

The person above is correct

Explanation:

i took the test and got it right. btw tysm for the help i really appreciate it!

Why does the moon have a greater influence on Earth's Tides than the sun does

Answers

Answer:

Because ocean tides are the effect of ocean water responding to a gravitational gradient, the moon plays a larger role in creating tides than does the sun. But the sun's gravitational gradient across the earth is significant and it does contribute to tides as well.

Explanation:

hello i need help on my last question this question is a bonus point to anyone who answer it

Answers

Answer:

A

Explanation:

A: Venus rotates far more slowly than Earth

Look at the column that says Period of Rotation.

Venus has a rotation period of 243 days.

Earth has a rotation period of about 24 hours.

243 days is much longer than 24 hours, so this is true.

B: Venus's year is longer than Earth's.

The year is also another way to say Period of Revolution.

Venus's is about 224 days.

Earth's is about 365 days.

Venus's is actually shorter, so this is false.

C: Mercury is approximately twice the size of Earth.

Let's look at the Equatorial Diameter column.

Mercury's is 4,880 km.

Earth's is 12,756 km.

Mercury's is much smaller than Earth's, so this is false.

D: All of the above.

Since B and C are both not true, this is incorrect.

Therefore, the correct answer is A: Venus rotates far more slowly than Earth.

What type of acid is currently of principal concern when dealing with acid rain?

Answers

Answer: Sulfur dioxide (SO2) and nitrogen oxides (NOx) released into the air by fossil-fuel power plants, vehicles and oil refineries are the biggest cause of acid rain today, according to the EPA. Two thirds of sulfur dioxide and one fourth of nitrogen oxide found in the atmosphere come from electric power generators

hope this helps

He showed me exactly how far apart the rows should be and how deep. He couldnt

Answers

Answer:

He could consider using a tape measure, or to use common objects and use those as a system of measurement. He could.

A DNA molecule is made up of building blocks known as nucleotides. Each nucleotide consists of deoxyribose, a phosphate group, and one of the chemical bases. The nucleotides join together to form a
, which form the backbone of a DNA strand.

Answers

Answer:

polynucleotide

Explanation:

according to edmentum notes, "The nucleotides join together to form a polynucleotide. Polynucleotides form the backbone of a DNA strand.'

Nucleotides are the building units of the DNA or RNA molecule. DNA is composed of deoxyribose, a phosphate group, and one of the chemical bases that make up each nucleotide.

What is a nucleotide?

It is a monomer of DNA or RNA. It is composed of a sugar (deoxyribose in DNA ribose in RNA), a phosphate group, and one of the chemical bases that make up each nucleotide.

The backbone of DNA is formed by which components?

It is formed of sugar and phosphate only.

To learn more about DNA, RNA, and nucleotide here,

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Why do fungi need to live in moist areas

Answers

Answer:

Search Results

Featured snippet from the web

Fungi help catabolism of complex organic matter into simple available inorganic forms. In other words they breakdown organic matter to obtain energy. This process of decomposition requires aerobic ambient and moisture therefore they are mostly found in moist habitats rich in detritus.

Explanation:

Fungi help catabolism of complex organic matter into simple available inorganic forms. In other words they breakdown organic matter to obtain energy. This process of decomposition requires aerobic ambient and moisture therefore they are mostly found in moist habitats rich in detritus.

Before dna was discovered in which materials did scientists think the genetic materials was stored?

Answers

Answer: Proteins

Explanation:

Answer:

Proteins

Explanation:

Unscramble the word - oicnoecm mptcia earth science please

Answers

I want to say

Economic impact (?)

Answer:

The answer is Economic impact.

On her way to school Tuesday morning, Ana got soaking wet during a surprise rainstorm. She was not carrying an umbrella or rain jacket
because the climate in her town was normally very hot and dry. What are the main factors that influence the amount of precipitation in an area or
region?
A. latitude, altitude, distance from large bodies of water
B. latitude, ocean currents, distance from large bodies of water
C. ocean currents, distance from large bodies of water, prevailing winds
D. prevailing winds, presence of mountain ranges, seasonal winds​

Answers

Answer:

D

Explanation:

She was not carrying an umbrella or rain jacket because the climate in her town was normally very hot and dry, the main factors that influence the amount of precipitation in an area or region is prevailing winds, presence of mountain ranges, seasonal winds​

what is climate ?

Climate is defined as a long-term pattern of weather in a specific area. the change weather can occur from hour-to-hour, day-to-day, month-to-month or even year-to-year.

the determination of climate can be occurred by a region’s climate system, this system consist of major components such as the atmosphere, the hydrosphere, the cryosphere, the land surface, and the biosphere.

The atmosphere is the variable part of the climate system where the composition and movement of gases surrounding the Earth can change radically, influenced by natural and human-made factors.

Changes to the hydrosphere, which include variations in temperature and salinity, occur at much slower rates than changes to the atmosphere.

For more details climate, visit

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Is this right please ASAP

Answers

Switch the warm moist one with drier air

What is the great pacific garbage patch

Answers

Answer:

The Great Pacific Garbage Patch is a 1.6 million kilometer long patch of garbage on the ocean. It is about three times the size of France and twice the size of Texas. It is an area on the surface where garbage has gathered form all over, it is extremely difficult to try and cleanup, because the water's gyres drag the pollution all over the ocean and dump it onto coastlines, shores, habitats, coastal reefs, and even deep into the oceans. Scientists are trying to solve this enviormental issue everyday and are brainstorming new ideas to solve this giant problem.

Answer:

The Great Garbage Patch is a area in the Pacific Ocean that is twice the size of  Taxes that is all trash. It is also known as the Pacific trash vortex. It is killing our marine life. Sea aminals like turtles and fish are mistaking the trash for food and eating it. It can also be troubling the human life too. Since we eat sea food we are eating the things they are eating.

Explanation:

I just learned it.

Depending on the organism, the number of____in a cell may change.

Answers

Answer:

chromosomes

Explanation:

Consider the steady ultafiltration of a solute from the capillary across the glomerular endothelial cells into the urinary filtrate in the kidneys. Model the endothelial cells as an infinite membrane of thickness tEC. Assume a well-mixed capillary with concentration CC and a well-mixed filtrate at CF. With a diffusion constant of DEC in the endothelial cell compartment, what is concentration profile across the endothelial cells

Answers

Answer:

DEC = CC + CF

Explanation:

It should be understood that, the concentration profile across the endothelial cells will base on the diffusion rate of the filtrate .

In Guinea pigs, short hair (S) is dominant over long hair (s), and black coat color (B) is dominant over
albino (b). Both genes assort independently. A female of a true breeding line with a black coat and long
hair is mated with a short haired albino male (also from a true breeding line). (a) What are the
phenotypes of the F1 generation? Explain. (b) If F1 is mated, which percentage of the offspring will be
homozygous for both characters? Give all genotypes and phenotypes of these homozygotes.​

Answers

Answer:

Explanation:

Short hair (S) is dominant over long hair (s), and black coat color (B) is dominant over albino (b).

A female of a true breeding line with a black coat and long  hair is mated with a short haired albino male (also from a true breeding line)

parents genotype      BBss  x    SSbb

gametes                       Bs     x    Sb

F1 generation geenotype    BbSs

Phenotype- They are all with black coat and short hair

Mating of F1   BbSs  x  BbSs

   Percentage of offspring homozygous for both characters:

  Bb  x   Bb           Ss   x   Ss

 BB Bb Bb bb     SS  Ss Ss ss

 1/4             1/4         1/4       1/4

1/4*1/4 = 1/16 = 0.0625 = 6% for each homozygous characters (BBSS-6% and bbss-6%)

The genotypes of the homozygotes are BBSS and bbss

The phenotype of BBSS is black coat with long hair

The phenotype of bbss is an albino with short hair

the epidermis of a plant functions like what part of an animal

Answers

Answer:

It's like the skin

Explanation:

Epi- outer layer

Dermis- Skin

It protects the more fragile layers underneath like how our skin protects our body from pathogens.

In the following exercise you will be given a wild type (ancestral) DNA code that you will transcribe and translate into an amino acid sequence (remember start codons). In addition to the wild type code, you have been given five mutated sequences of the wild type code that you will also transcribe and translate. For each mutation you will determine the mutation type (substitution, insertion, deletion) and effect (silent, nonsense, missense, frameshift-missense, frameshift-nonsense) by comparing to the wild type. Wild type template strand:
3'TGTACTTCAAACCGATT5"
mRNA-
AA Seq.

Answers

Answer:

Wild type template strand

3'TGTACTTCAAACCGATT5'

Wild type template DNA strand after transcription give following mRNA sequence

5’ACAUGAAGUUUGGCUAA3’

This mRNA has five codons; out of five, four codons (AUG, AAG, UUU and GGC)encode aminoacid and one is stop codon (UAA). Therefore, after translation this mRNA gives following amino acid sequence

Methionine-Lysine-Phenylalanine-Glycine

Describe the trends that you see in the evolution of land plants in terms of: gametophyte or sporophyte dominance size and independence (whether or not it can live on its own) of the gametophyte or sporophyte Make sure that you identify those two traits for each of the major land plant groups : 1) "Bryophytes" 2) Ferns and Lycophytes 3) Seed Plants (Gymnosperms and Angiosperms) New piece of information: diploid organisms have higher survival under high ultraviolet radiation environments (i.e. on LAND!) than haploid organisms. Using the trends you observed and the new information above, make an inference: WHY do we observe these trends in the land plants? (In other words, how might higher survival of diploid organisms under high UV conditions explain the trend you observe.)

Answers

Answer:

Explanation below.

Explanation:

Gametophytes are plants that reproduce not by spores but by gametes, that is male and female gametes.

Sporophytes are the plants that make use of spores as the means of reproduction. This means that they produce spores.

1. Bryophytes are sporophytes

2. Fern or lycophytes are sporophytes

3. Seed plants are gametophytes. And that is why they possess both male and female gametes.



1. Which plant traps bugs in its stem and forces them to walk forward?

Answers

Explanation:

The active trap in the Venus Flytrap ( dionaea muscipula )

Fertilizer runoff causes an increase in the dissolved nutrients of the ecosystem shown in the food web below. This causes the number of phytoplankton to double.


How will this most likely affect the other species in this ecosystem?
A.
The shrimp population will increase which will cause an increase in the squid population.
B.
The shrimp population will decrease which will cause an increase in the squid population.
C.
The shrimp population will decrease which will cause an increase in the sperm whale population.
D.
The shrimp population will increase which will cause a decrease in the sperm whale population.

Answers

Answer:

I believe the answer is A because if shrimp eat phytoplankton, and squid eat shrimp this should work. I am not positive but I hope this helps.

Why are leaves of water lily coated with wax on the upper surface?

Answers

Answer:

The wax creates an outer layer of zero friction surface helping the water lily leaves float on the water surface, the wax also creates a shiny coating that reflects and lowers the temperature of the water and also prevents water loss by evaporation and helps in prevention of other plant diseases.

Explanation:

Which of the following statements concerning metagenomic sequencing is incorrect

Answers

Answer:

The correct answer is "proteins are extracted from an environment, fragmented, and adaptors are added".

Explanation:

The missing options of this question are:

A) Software aligns sequences and assemble large portions of genome.

B) The samples are subject to polymerase chain reaction for amplification.

C) The sequences of the amplified fragments are determined by next-generation methods.

D) Proteins are extracted from an environment, fragmented, and adaptors are added

The correct answer is option D) Proteins are extracted from an environment, fragmented, and adaptors are added.

Metagenomic sequencing refers to the amplification and determination of all nucleotide sequences in a sample, which might contain multiple microorganisms and viruses in order to understand the presence and proportions of microbiota. Metagenomic sequencing involves the use of next-generation methods, to amplify and characterize all the nucleotides sequences. It is false to affirm that the proteins are extracted directly from the environment in this technique, since metagenomic sequencing is focused on the nucleotide sequences.

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