20. Which of the following is/are a base?
HCI
KOH
H20
H2SO4
NaOH

Answers

Answer 1

Answer:H2SO4

Explanation:

Answer 2

Answer:

KOH or potassium hydroxide

Explanation:

it is a very strong base reacting violently with acids


Related Questions

what is most likely to result when a mutation affects a DNA sequence?

Answers

Answer:

Mutations can occur during DNA replication if errors are made and not corrected in time. ... However, mutation can also disrupt normal gene activity and cause diseases, like cancer. Cancer is the most common human genetic disease; it is caused by mutations occurring in a number of growth-controlling genes.

Answer:

The amino acid sequence will be changed and a different protein will be formed.

Explanation:

I just got the answer wrong but it showed me the right answer now.

how does renewable energy affect non-human organisms? (plants, animals, bacteria, fungi,etc.)

Answers

Answer:

Non Renewable Energy Impact on Environment

All energy sources have some impact on our environment. Fossil fuels—coal, oil, and natural gas—do substantially more harm than renewable energy sources by most measures, including air and water pollution, damage to public health, wildlife and habitat loss, water use, land use, and global warming emissions.

Explanation:

New species develop when??? Please help!

Answers

Answer:

by speciation

Explanation:

new species from by speciation, in which an ancestral population splits into two or more genetically distinct descendant populations.

Can anyone help please

Answers

Answer:

Although secreted by the pancreas, glucagon directly impacts the liver as it works to control blood sugar levels. Specifically, glucagon prevents blood glucose levels from dropping to a dangerous point by stimulating the conversion of stored glycogen to glucose in the liver.

Explanation:

:) (i'm not supposed to tell you the answer but i can help you)

Why is it dangerous to have too much carbon dioxide in the atmosphere

Answers

Answer:

too much CO2 is toxic for humans to inhale. we rely on plants to absorb CO2 and produce O2. If they was a sudden extinction of all plants on earth, this would lead to a rise of CO2 which would reduce O2 air quality. (not good at all)

Explanation:

If convection cells in the asthenosphere are the mechanism behind plate tectonic movement, what powers the convection cells?

a) energy from the sun
b) energy from the earth's core
c) air pressure changes
d) energy from magma

Answers

I think the answer will be C

The energy that powers the convection cells is ENERGY from the earth's core (Option B).

Convection currents, also known as convection cells, are caused by density differences within a body of liquid or gas.

Convection cells inside of the Earth form as material near the Earth's core heats up.

The asthenosphere refers to the upper mantle layer beneath the lithospheric mantle which is involved in plate tectonic movement.

The heat inside the Earth's core heats the asthenosphere, which is associated with the movement or 'motion' of convection cells.

In conclusion, the energy that powers the convection cells is ENERGY from the earth's core (Option B is correct).

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Conditions in the environment that impact the size of the population are called

Answers

Answer:

here's your answer

Density-dependent regulation

Explanation:

Most density-dependent factors, which are biological in nature (biotic), include predation, inter- and intraspecific competition, accumulation of waste, and diseases such as those caused by parasites. Usually, the denser a population is, the greater its mortality rate.

please mark me as brainliest

Answer:

maximum reproductive capacity? what do you mean




Do multicellular organisms GROW? Do multicellular organisms DEVELOP

Answers

Answer:

It has physically increased in size. Often, growth of a multicellular organism occurs as more cells are created. In unicellular organisms (like bacteria), growth still occurs. ... For this reason, most biologists will tell you that development only occurs in multicellular organisms, not in unicellular ones.

In cell membranes with aquaporins can water move across the membrane?
1. No, water is polar can not pass the phospholipids
2. Yes, water is able to pass across the membrane through the aquaporins.
3. No, water is too large to pass through the aquaporins.
4. Yes, water is non-polar and can cross the phospholipid bilayer.

Answers

Answer:

The cell membranes of a variety of different bacteria, fungi, animal and plant cells contain aquaporins through which water can flow more rapidly into and out of the cell than by diffusing through the phospholipid bilayer.

A population of 288 cichlids lives in a lake with ample food, oxygen, and shelter. Over the course of one year, 375 new cichlids are born and 105 older cichlids die.



Population Growth

StartFraction d Upper N Over d t EndFraction = Upper B minus Upper D

What is the new population size of cichlids?

(
)

Answers

Answer:588

Explanation:

Can’t see
To find an answer

Answers

Yeah Ima be honest I think you didn’t put a question

Water is polar. What types of bonds does this allow water to make with other water molecules?

Answers

Answer:

Covalent bonds.

Explanation:

Water forms polar, covalent bonds with other molecules because of the uneven electron charge.

im from albania and i dont know all of these yet but im here to learn
so how can i explain cloning

Answers

Cloning is the process of producing individuals with identical or virtually identical DNA

Answer:

cloning like making exacg copies of an organism?

I think your asking for how scientist are replicating DNA copies of species to create another. it has been done before successfully with a sheep (her name was dolly i think) some light research will explain it better :)

many nonscientist careers require a knowledge of science because workers must
a.) develop new science laws and theories.
b.) use materials and processes that follow scientific principles.
c.) use the process of scientific injury.
d.) keep up with new developments in science.

Answers

It’s is A Because the nonscientist devolved new laws and science laws and theories

Which of the following describes a chemical change? *
Clear liquids mix, producing a cloudy liquid and a yellow powder.
Silver coins are melted down and shaped into a solid brick.
Salt is added to a pot of hot water, and the water's boiling point changes.
O
An apple is chopped into eight slices.

Answers

Answer:the first option, clear liquids mix, producing a cloudy liquid and a yellow powder

hope this helps :)

Explanation:

Someone please help ill give you brainliest!!!

Answers

Answer:

Work is the transfer of energy , Energy is the capacity for doing work , and Power is work being done in a unit of time.

There are 2 types of energy

Kinetic Energy : Energy of Motion

Potential Energy : Stored Energy

When calculating work energy and power you use WORK = W=Fd

Because energy is the capacity to do work , we measure energy and work in the same units. Power's SI unit of measurement is the Watt, representing the generation or absorption of energy at the rate of 1 Joule/sec. Power's unit of measurement in the English system is the horsepower, which is equivalent to 735.7 Watts.

what do the base pairing rules have to do with replication

Answers

Answer:

Replication relies on complementary base pairing, that is the principle explained by Chargaff's rules: adenine (A) always bonds with thymine (T) and cytosine (C) always bonds with guanine (G).

Explanation:

A in Bio last year.

What are TWO ways that species are becoming endangered due to human behaviors?

Answers


Losss of habitat and loss of genetic variation

Which answer best explains the difference between protists and bacteria?

A. Bacteria are prokaryotes and protists are eukaryotes

B. Bacteria have a cell membrane while protists do not

C. Bacteria have ribosomes while protists do not

D: bacteria have cytoplasm while protists do not

Answers

Answer:

The correct option is A. Bacteria are prokaryotes and protists are eukaryotes

Explanation:

The major difference between BACTERIA AND PROTISTS is the Bacteria are PROKARYOTES in nature and they dont have what we called nucleus reason been that their microbes are single celled microbes while protists on the other hand are EUKARYOTIC in nature and they have nucleus and they can either have a single-celled or have more than one celled.

The Second difference is that protists can only be found in the area or surrounding that are mostly moisture while bacterial on the second hand can be found in every area, environment or surrounding.

Therefore the answer that best explains the difference between both protists and bacteria

Is option A which states that Bacteria are PROKARYOTES while protists are EUKARYOTES.

Could anyone help me on my recent post?

Answers

Answer:

yes :D

Explanation:

Answer:

shore what u need

Explanation:

Is better for an ecosystem to have high or low species abundance?

Answers

Answer:

There should equilibrium state in the ecosystem in case of number of species, if there will be high species abundance there would be higher rate of competition in between the species also the predation can be easily seen in such ecosystem. On the other hand if the species abundance is low then the competition between the species and predation can not be seen.

Differentiate between breathing and respiration
Your answers


Answers

Answer:

Breathing is a biophysical process that involves the exchange of Gases through inhalation and exhalation

repiration is a biochemical process to realest energy from organic compounds which are then used for performing different physical activities

Explanation:

Cold food should be stored at a maximum internal temperature of 41 degrees F or lower.


True

False

Answers

Answer:

the answer is true I think

Answer:

I took the test.

Its False

Suppose a graduate student is studying a loss-of-function mutation in the mouse gene zigzag. whereas wild type mice have straight tails, zigzag mutant mice have tails with two sharp kinks, so that the tail looks like the letter z. to determine how the zigzag phenotype is inherited, he performs the crosses listed in the first colu

Answers

Complete question:

Suppose a graduate student is studying a loss-of-function mutation in the mouse gene zigzag. Whereas wild type mice have straight tails, zigzag mutant mice have tails with two sharp kinks, so that the tail looks like the letter Z. To determine how the zigzag phenotype is inherited, he performs the crosses listed in the first column of the table below, using parents from true-breeding lines. Three possible sets of results from these crosses are shown. Determine the mode of inheritance of the zigzag gene that would yield each result set.

Mode of inheritance Options:

cytoplasmic-linked recessive inheritance,  maternal effect inheritance, genomic imprinting (paternal allele is inactive), genomic imprinting (maternal allele is inactive), x-linked recessive inheritance

Note: You will find the table in the attached file

Answer:

Set A: X-linked recessive inheritanceSet B: maternal effect inheritanceSet C: genomic imprint (paternal allele is inactive)

Explanation:

SET A:

X-linked recessive inheritance: This pattern refers to a recessive mutated allele that expresses the abnormal character and is linked to the X chromosome.  

Cross 1: zig zag female   x   wild type male

Parental) Xz Xz     x    X+Y

F1) Phenotype---> 50% zigzag (all males)   ;  50% wild type (all females)    

      Genotype---> ½ X+ Xz   ;   ½ Xz Y      

Cross 2:  

Parental) X+ Xz     x   Xz Y    

F1) Phenotype---> From the whole progeny: 25% wild type females ; 25% wild type males ; 25% zigzag females ; 25% zigzag males - 50% wild type animals + 50% zigzag animals

     Genotype---> ¼ Xx Xz  ; ¼  Xx Y ;   ¼ Xz Xz  ; ¼  Xz Y      

Cross 3: wild type female   x   zigzag male

Parental) X+ X+     x    XzY

F1) Phenotype---> 100% wild type animals (50% females + 50% males)

      Genotype --->  ½ X+ Xz   ;   ½ X+ Y      

Cross 4:

Parentals) X+ Xz     x    X+Y

F1) Phenotype---> From the whole progeny: 50% wild type females ;  25% wild type males ; 25% zigzag males

      Genotype --->  ¼ X+ X+ ; ¼  X+ Xz   ;  ¼ X+ Y  ;  ¼  Xz  Y

SET B:

Maternal effect: Refers to the influence of the “environment provided by the mother” on the progeny phenotype. The mother´s genotype directly determines the progeny phenotype. The progeny genotype is irrelevant, as well as the father´s genotype or phenotype. This means that no matter what is the genotype of the offspring, all of them will express the same phenotype as their mother. This effect is commonly seen in insects, but it might also occur in mammals and plants. A much known experiment about this effect is the one performed on Limnea sp snail.  

Cross 1: zig zag female   x   wild type male

Parental) Xz Xz     x    X+Y

F1) Phenotype-->100% zigzag animals, due to the female´s phenotype, Xz Xz      

      Genotype--> ½ X+ Xz   ;   ½ Xz Y      

Cross 2:  

Parental) Xx Xz     x   Xz Y    

F1) Phenotype-->100% wild type animals, due to the female´s phenotype, Xx Xz      

     Genotype--> ¼ Xx Xz  ; ¼  Xx Y ;   ¼ Xz Xz  ; ¼  Xz Y      

Cross 3: wild type female   x   zigzag male

Parental) X+ X+     x    XzY

F1) Phenotype-->100% wild type animals, due to the female´s phenotype, X+X+      

      Genotype --> ½ X+ Xz   ;   ½ X+ Y      

Cross 4:

Parentals) X+ Xz     x    X+Y

F1) Phenotype-->100% wild type animals, due to the female´s phenotype, X+ Xz      

      Genotype---> 100% wild type animals      

SET C:

Genomic imprint (Paternal allele inactive): Refers to a pattern that characterizes for epigenetically inheritance and for unequally functional paternal and maternal genomes. Males X chromosomes are inactive or imprinted and have a different function from those females X chromosomes. This is a common pattern in some mammals, insects and angiosperms. The paternal allele can not be expressed which causes an unequal contribution to the progeny phenotype.  

Cross 1: zig zag female   x   wild type male

Parental) Xz Xz     x    X+Y

F1) Phenotype--->100% zigzag animals, because the male´s X chromosome is imprinted or inactive      

      Genotype--->½ X+ Xz   ;   ½ Xz Y      

Cross 2:  

Parental) Xx Xz     x   Xz Y    

F1) Phenotype--->50% wild type animals ; 50% zigzag animals.  Due to both the female´s chromosomes, Xx Xz      

     Genotype---> ¼ Xx Xz  ; ¼  Xx Y ;   ¼ Xz Xz  ; ¼  Xz Y      

Cross 3: wild type female   x   zigzag male

Parental) X+ X+     x    XzY

F1) Phenotype--->100% wild type animals, due to the female´s phenotype, X+X+      

      Genotype ---> ½ X+ Xz   ;   ½ X+ Y      

Cross 4:

Parentals) X+ Xz     x    X+Y

F1) Phenotype--->50% wild type animals ; 50% zigzag animals

      Genotype ---> ¼ X+ X+ ;  X+ Y  (Wild type)  

                            ¼  X+ Xz   ;  ¼ Xz Y  ( zigzag)

The following graph is representative of what type of population growth?
a.
logistic
b.
exponential
c.
linear
d.
triangular

Answers

Answer:

a logistic

Explanation:

makes sense

PLEASE ANSWER ASAP ILL GIVE YOU THE BRAINLIEST AND ALOT OF POINTS
which is an example of how stem cells are currently being used?
1. For generating healthy cells to form replacement organs like brains
2. for directing differentation to treat diabetes and arthritis
3. for testing for possible side effects of a new cancer medication
4. for curing heart disease by regenerating damaged heart tissue
I HEARD THAT 4 IS NOT CORRECT SO PICK THE CORRECT ONE THA ISNT FOUR. ITS FROM EDGE2020

Answers

Answer:

1. For generating healthy cells to form replacement organs like brains

Stem cells can be used for curing heart disease by regenerating damaged heart tissue. The correct option is 4.

What is stem cell?

Stem cells are the raw materials of the body, the cells that give rise to all subsequent cells with specific responsibilities.

Under the right conditions, stem cells divide to establish more cells known as daughter cells in the body or in a laboratory.

Bone marrow stem cells, for example, may be able to generate bone or cardiac muscle cells.

This research has resulted in early-stage clinical trials to assess the effectiveness and safety of the product in humans.

Adult stem cells, for example, are currently being examined in people suffering from neurological or cardiovascular disease.

Thus, the correct option is 4.

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In eukaryotic organisms, genes usually consist of two alleles. The two alleles are often on different parts of the same chromosome.

These sentences contain incorrect information. Which option describes the mistake?

Answers

Answer:

what are the options? need more info

1) What modern technology is used by marine scientists to gather data about oceans

Answers

Answer:SONAR: Sound Navigation and Ranging—SONAR is a technology which uses sound wave to find and identify objects in water.

Explanation:

Match the reproductive structures based on their function and the system to which they belong.
egg
ovary
testis
vas deferens
sperm
vagina
urethra
fallopian tube
Function
Female Reproductive
Structure
Male
Reproductive
Structure
connects the internal reproductive organs to
the exterior and discharges reproductive fluids
to the exterior
functions as the sex cells or gametes
the site where gametes are produced
functions to transport the gametes from the
inction in the reproductive

Answers

Answer:

right on Plato/ Edmentum

Explanation:

vagina               urethra

egg                   sperm

ovary                 testis

fallopian tube    vas deferens

The correct reproductive structure is based on their function and the system to which they belong are:

Vagina       -        urethraegg          -         sper-movary       -          testisfallopian tube  -  vas deferens

What is the reproductive system?

In both males and females, a reproductive system is a group of internal and external organs that cooperate to allow for reproduction. The organs, glands, and tissues involved in childbirth (children).

The ovaries, fallopian tubes, uterus, cervix, and vagina are all parts of the female reproductive system. It includes the pen-is, prostate, and testes in men.

Therefore, the correct option is

Vagina       -        urethraegg          -         sper-movary       -          testisfallopian tube  -  vas deferens

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*PLEASE HELP ME*

TRUE OR FALSE

Each of the earth's subsystem can be studied separately but they are dependent and connected with each other .

Answers

The answer to this is true.

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