Biology High School

This chemical equation represents a chemical reaction.
2HNO3 + Na2SO3 - 2NaNO3 + H2O + S02
Which chemical is a reactant in the reaction?
O A. Na so
B. SO2
O C. H20
OD. NaNO3

This Chemical Equation Represents A Chemical Reaction.2HNO3 + Na2SO3 - 2NaNO3 + H2O + S02Which Chemical

Answers

Answer 1

Answer:

OPTION A is the reactant

Explanation:

This is an acid-base reaction (neutralization): HNO3 is an acid, Na2SO3 is a base.

Answer 2

Answer:

A.

Explanation:

reactants are on the left side of the arrow

Related Questions

4. Which of the following statements correctly compares the function of nucleic
acids and proteins?

A. Proteins speed up chemical reactions; nucleic acids provide structural support.

B. Proteins store energy, nucleic acids provide energy

C. Proteins help build cell membranes; nucleic acids store energy

D. Proteins express genetic information; nucleic acids store genetic information

Answers

Answer:

B

Explanation:

Proteins do store energy and nucleic acids provide energy thats why B is correct.

Extension Questions

12. Scientists may design an experiment with a control group, which is a set of organisms or sam-

ples that do not receive the treatment (the independent variable) that is being tested. Scientists

can then compare normal changes in organisms or samples with those that may have occurred

because of the treatment. The idea of a control group is not the same as a controlled variable.

Suppose a scientist is doing an experiment to determine the effect of an all-organic diet on the

occurrence of cancer in rats.

a. What variables should the scientist control in the experiment?

b. Describe the control group for this experiment.

Answers

Answer:

a) same species of rats

b) Some rats will not be given the all-organic diet

Explanation:

In an experiment, a control group is the group that do not receive the treatment (the independent variable) that is being tested while the control variables or constants are the variables that must be kept constant throughout the course of the experiment in order not to alter the experiment's outcome.

In this experiment where a scientist is trying to determine the effect of an all-organic diet on the occurrence of cancer in rats, the control group would be the GROUP OF RAT THAT DO NOT RECEIVE THE ORGANIC DIET. Also, a control variable would be the SAME SPECIES OF RAT USED throughout the experiment.

Which feature causes a gap in the geologic record?

Answers

the answer to your question is Unconformities

Please help me ur nice...

Answers

Answer:

The answer is A

Explanation:

The reintroduction of wolves their angered nearby farmers because they feared their animals would be hunted. What level of responsibility do you think the national park should have towards their neighbors? What level of responsibility to the neighbors have to protect their own property? Use reasons and examples to justify your answer.

Answers

The national park has very specific responsibility to maintain and protect the organisms within the park. Though the farmers are their neighbors, wolves are essential to the ecosystem inhabited by the farmers and their livestock. The park may share some responsibility if property is damaged because of the wolves (cows killed, etc) but the population of the wolves is so sensitive that it cannot justify killing them in the name of “protection of personal property”.

where did genetic engineering come from

Answers

Genetic engineering based on recombination was pioneered in 1973 by American biochemists Stanley N. Cohen and Herbert W. Boyer, who were among the first to cut DNA into fragments, rejoin different fragments, and insert the new genes into E. coli bacteria, which then reproduced.
Genetic engineering based on recombination was pioneered in 1973 by American biochemists Stanley N. Cohen and Herbert W. Boyer,

In terms of gene, chromosome, and DNA were put in order of size. what would be the order from smallest to biggest?

Answers

Answer:

According to the order from smallest to largest, the order will be: Nucleotide, Gene, DNA, Chromatin, Chromatid, Chromosome

Fluid in the inner ear creates a sense of ____.

Answers

Answer:

Balance

Explanation:

What happens to the atoms in a scoop of ice cream as it melts? They decrease in temperature. They lose energy. They vibrate faster. They are held tightly in a fixed position.

Answers

Answer:

they vibrate faster

Explanation:

Answer:

They Vibrate Faster

Explanation:

Did it on Edge 2020

-Its C

how many chromosomes do birds have.

Answers

Answer:

80 chromosomes

Answer:

80 Chromosomes

Explanation:

In general, bird karyotypes have a high diploid number (2n) of typically around 80 chromosomes that are divided into macro- and microchromosomes.

What is the role of lactase? which sugar does the act on in reaction?

Answers

Answer:

This enzyme helps to digest lactose, a sugar found in milk and other dairy products. Lactase is produced by cells that line the walls of the small intestine. ... Lactase functions at the brush border to break down lactose into smaller sugars called glucose and galactose for absorption.

Explanation:

Lactase is an enzyme produced by many organisms. It is located in the brush border of the small intestine of humans and other mammals. Lactase is essential to the complete digestion of whole milk; it breaks down lactose, a sugar which gives milk its sweetness.

cause of drug addiction.​

Answers

Answer:

The cause of drug addiction is simply because of doing drugs lol

Hope this helped, have a good day

the cause of drug addiction can start by seeing other people do it and maybe you get pressured into it and you end up liking it that you abuse it to where you because addicted even more. This can be the same with nicotine, when they sell you packages from the smoke shop it warns you by saying, “warning this product has nicotine in it. Nicotine can be an addictive chemical.” Most people become addicted to many things after doing it a few times.

I hope this helped

how do antibiotics seek out antibacterial cells? ​

Answers

Answer:

many antibiotics includes penicillin, work by attacking the cell wall of bacteria. specifically, the drugs prevent the bacteria from synthesizing a molecule in the cell wall called peptidoglycan.

let me know if this was helpful or not...

________ cells are involved in fertilization.
a.
diploid
c.
triploid
b.
haploid
d.
all of the above

Answers

Answer:

all of the above but not sure

_: the rate at which electric charge passes a point in a circuit.
A.) voltage
B.) circuit
C.) current

Answers

C is the answer Current

How is a cell a system , ANWSER IN YOUR OWN WORDS ?

Answers

Explanation: the movement of organelles and other substances within cells. Endoplasmic reticulum

Which of the following best describes all macromolecules?
A. They are organic molecules that all contain carbon.
O
B. They are organic molecules that all contain nitrogen.
O
C. They are inorganic molecules that all contain nitrogen.
6
D. They are inorganic molecules that all contain carbon.

Answers

Answer:

A. They are organic molecules that all contain carbon.

Explanation:

All known life on earth is carbon-based. Most molecules used as building blocks are organic i.e. consisting of based on carbon. This means that they consist of atoms of carbon, hydrogen, oxygen with other variations like nitrogen.

Some macromolecules include glucose-based polysaccharides, amino-acid based proteins and lipids consisting of glycerol and fatty acids.

Identical twins are genetically the same but do not always look or act exactly alike. Propose a hypothesis to explain this.

Answers

Answer:

It is because no two people should have the same DNA, even twins.

Answer:

Explanation:

The independent assortment of

Some people can roll the tongue into a tube shape, while others cannot. Practicing is not likely to help because tongue-rolling is an inherited trait. The allele for rolling the tongue (R) is dominant to the allele for not being able to roll the tongue (r).

Create a Punnett square. Make sure that it shows a cross between two parents with at least one R allele.

Answers

I’m not sure if you want a specific Punnet Square with certain alleles, but this square exemplifies an example of a cross between parents with at least one R allele(which is what the question seems to ask).
Hope this helps :)

The Punnett square, showing a cross between two parents with at least one R (rolling the tongue) allele, is mentioned below.

What is a Punnet square?

A Punnett square is a graphical tool used by geneticists to predict the probability of offspring genotypes resulting from a cross between two parents with known genotypes.

In the Punnett square, the uppercase R represents the dominant allele for tongue rolling, and the lowercase r represents the recessive allele for not being able to roll the tongue.

The possible offspring genotypes are shown in the boxes within the table. The ratio of genotypes is 1:2:1, with 25% of the offspring having the homozygous dominant genotype (RR), 50% having the heterozygous genotype (Rr), and 25% having the homozygous recessive genotype (rr).

Learn more about Punnet square, here:

https://brainly.com/question/29577186

#SPJ3

Who is mainly responsible for this niche or role: males or females?

Answers

Answer:

Females

Explanation:

trust me its females

Pathogens must be ____ to spread and not all infectious diseases are contagious or cause harm to every animal that hosts it.

Answers

An organism I think, it needs to be alive. All pathogens needs to thrive and survive is a host. The four types of pathogens are all alive like bacteria, fungi, and parasites

Which of the following best describes the use of a renewable resource?

A)Propane is a product you might use to barbeque; it comes from a natural gas and processing oil

B) Coal is mined from deep passages dug in mountainside and burned to generate electricity

C) Oil is pumped from beat his the ocean floor and refined into jet fuel to power airplanes

D) wind turbines gather energy from the wind and convert it into electrical energy

Answers

Answer:

D. wind turbines gather energy from the wind and convert it into electrical energy

Explanation:

All other answers are nonrenewable resources

What is the final product of transcription

Answers

The final product Is called rna

Which of these is purposefully changed during a scientific investigation? (4 points)

a
Test variable (independent variable)

b
Outcome variable (dependent variable)

c
Control group

d
Hypothesis

Answers

Either A or D I’m not 100% sure but it’s the only thing that makes since

Answer:

The answer is A. Test variable (independent variable)! :)

Explanation:

Hope this helps; I took the test and got it correct!!

Don't forget to mark the this Brainliest if this helped! :)

After reading the paragraph below, answer the question that follows.Scientists interested in knowing the best way to restore an area after a temporary road was built through it completed a study comparing two treatments: (1) restoring the contour of an area so that there was no longer a depression or cut-through where the road was previously and (2) simply abandoning the area to allow vegetation to return on its own. They wanted to know whether either or both of these treatments would return the aboveground vegetation and the belowground soil properties to their original state, as seen in a similar area where there had never been a road.In this experiment, the area that had never had a road is useful to the experiment because:________________

Answers

Answer:

it acts as the control group in the experiment

Explanation:

The area that had never had a road is extremely useful because it acts as the control group in the experiment. The researchers can use this untouched area of land as a benchmark for the rest of the experiment. Once they implement both test scenarios on the pieces of road, they can then compare the results gathered from each study with the data gathered from the area that had never been a road in order to determine which option provides results that best compare to the original properties of the piece of area that has never been made into a road.

Explain the 3 types of symbiosis. Give examples of each and explain which organism is benefited, harmed or is neutral to the relationship.

Answers

Answer:

mutualism-commensalism-parasitism.

Explanation:

There are three different types of symbiotic relationships: mutualism, commensalism, and parasitism. Mutualism: both partners benefit. ... Commensalism: only one species benefits while the other is neither helped nor harmed.

Mutualism: both partners benefit. An example of mutualism is the relationship between the Egyptian plover and the crocodile. ...

Commensalism: only one species benefits while the other is neither helped nor harmed. ...

Parasitism: One organism (the parasite) gains, while the other (the host) suffers.

Benifited and harmed :-Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.

HOPE MY ANSWER IS HELPFUL

In Figure 7-2, which picture shows weathering that involves carbonic acid: A, B, or C?

Answers

Answer: C

Explanation: Carbonic acid is the culprit when it comes to the carbonation type of chemical weathering. As rain goes through the air and into the ground, it grabs carbon dioxide, creating carbonic acid. This weak acid reacts with the calcium carbonate in stones when it seeps into the cracks.

I NEED THE ANSWER ASAP

which particles do plants absorb to obtain energy?  a. photons  b. electrons  c. atoms  d. molecules

Answers

Answ

i think its a

Explanation:

Answer:

It's a. photons(light energy)

Summary of natural influences of a savanna.

Answers

Answer:

The African savanna ecosystem is a tropical grassland with warm temperatures year-round and with its highest seasonal rainfall in the summer. The savanna is characterized by grasses and small or dispersed trees that do not form a closed canopy, allowing sunlight to reach the ground. The African savanna contains a diverse community of organisms that interact to form a complex food web.

What is Xd and tbh
Pls tell em

Answers

Answer:

tbh means to be honest

XD 1. an expression used in text messages or e-mails signaling happiness or laughter. XD is an emoticon. X represents closed eyes while D stands for an open mouth. OMG! What you did today was so funny!!! XD.

Explanation:

Answer:

XD is a face like a laughing face the X is the 2 eyes crossing and the D is the mouth

Explanation:

eyes↓ ↓mouth

        XD

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