Matthias Schleiden and Theodor Schwann looked at plant and animal cells. Schwann wrote the first part of what is known as the cell theory. Which statement did he write? A. All organisms are composed of one or more cells. All cells come from existing cells. B. All organisms are composed of one or more cells. The cell is the basic unit of life in all living things. C. All cells come from existing cells. The cell is the basic unit of life in all living things. D. All cells are microscopic in size. All cells come from existing cells.

Answers

Answer 1

Answer:

B. all organisms are composed of one or more cells. the cell is the basic unit of life in all living things.

Explanation:

This is the first part of the cell theory.^-^


Related Questions

Can someone help me please, i cant find the answer to this question anywhere.

Answers

Answer:

light dependent reaction

C will be the answer to your question.

A sequence of a DNA template strand is shown below.
3’ T C C A A T G G C T T A T T T G C A 5’



Which of these is the correct amino acid chain produced from the DNA template strand?

Arginine – Leucine - Proline – Asparagine – Lysine – Arginine

Serine - Leucine – Proline – Asparagine – Lysine – Arginine

Tryptophan – Phenylalanine – Leucine – Glycine – Asparagine – Phenylalanine

Tryptophan – Phenylalanine – Leucine – Glycine – Asparagine - Serine

Answers

it’s the first option!

Explanation: It translates to agg uua ccg aau aaa cgu and the bases are Arg, Leu, Pro, Asp, Lys, and Arg. In that order. Hope this helps!

The correct amino acid chain produced from the DNA template strand will be Arginine – Leucine - Proline – Asparagine – Lysine – Arginine. The correct option is A.

What is amino acid?

Amino acids are molecules that form proteins when they combine. The building blocks of life are amino acids and proteins.

Amino acids are left over after proteins are digested or broken down. To help the body, the human body uses amino acids to make proteins: Food should be broken down.

A codon is a three-nucleotide (DNA or RNA) sequence that forms a unit of genomic information encoding a specific amino acid or signaling the end of protein synthesis (stop signals).

There are 64 different codons, 61 of which specify amino acids and three of which serve as stop signals.

The amino acid sequence for the given template will be:

3' AGGUUACCGAAUAAACGU 5'

So, as per three letter code, the amino acid chain will be:

Arginine – Leucine - Proline – Asparagine – Lysine – Arginine

Thus, the correct option is A.

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The questions are on the picture

Answers

Answer:

okkk.....

I will definitely study about it and tell u

easy inherited or acquired question! please help me!
^-^

Answers

you learn to play the guitar, you are not born knowing how to play it, therefore it's acquired

Osmosis does not require an additional input of energy from the cell.
Osmosis is considered to be a type of
active transport
endocytosis
passive transport
exocytosis

Answers

Answer:

Osmosis is considered to be a type of

active transport.

Explanation:

Answer:

passive transport

Explanation:

Osmosis is the process in which water molecules move from a region of higher water potential to a region of lower potential down a water potential gradient across a partially permeable membrane, so little energy is required to carry out this process, thus it is a form or passive transport.

!!I NEED HELP!!
What is a benefit to utilizing fusion reactions instead of fission reactions?

A)Fusion reactions do not require any kind of radiation shielding to prevent exposure.

B)Fusion reactions do not produce harmful radiation and transuranium nuclides.

C)Fusion reactions can proceed in any temperature range.

D)Fusion reactions are easier to control and regulate.

Answers

Answer:

B)Fusion reactions do not produce harmful radiation and transuranium nuclides.

Explanation:

___________

The benefit of utilizing fusion reactions instead of fission reactions is that the fusion reaction does not produce harmful radiation and transuranium nuclides. Thus, the correct option for this question is B.

What is meant by Fusion?

Fusion may be defined as a type of process that significantly involves the combination of two or more atoms or molecules in order to form one larger molecule. This type of reaction normally occurred in nature as compared to fission.

The process of fission involves the disintegration of numerous smaller molecules or atoms from a larger one. This creates a lot of long-lived radioactive substances in nature that are harmful to live organisms. These types of reactions are not favored by nature.

Therefore, fusion reactions do not produce harmful radiation and transuranium nuclides are the benefit of utilizing fusion reactions instead of fission reactions. Thus, the correct option for this question is B.

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please help me if your right ill give you anything please hellppp​

Answers

Answer:

C

Explanation:

An ecosystem food chain always starts with producers

Consumers then consume the energy from producers (prey on them)

Decomposers are organisms which break down dead material and provide energy to the environment for which producers can use which creates a looped cycle

In shorthorn cattle, when a red bull (RR) is crossed with a white cow (WW), all the offspring are roan—a spotted, red and white color. What offspring are expected from mating a roan bull and a roan cow?

Answers

Answer:

25% red

50% roan

25% white

Explanation:

When RR (red) is crossed with WW (white), it results in roan color.

       RR (red)   x    WW (white)

              RW (roan)

Two roan individuals are then mated.

          RW    x    RW

       RR    RW    RW    WW

Offspring

1/4 RR - Red

1/2 RW - Roan

1/4 WW - White

Hence, the offspring are expected to be 25% red, 50% roan, and 25% white.

Blood type is controlled by the inheritance of any two of the following alleles: IA, IB, or i. IA codes for type A blood. IB codes for Type B blood. Both IA and IB are codominant. The i allele is recessive and will cause Type O blood whenever two copies of the allele are present.

If a mother has Type AB blood (IAIB) and a father has Type O blood (ii), what percentage of their children are likely to have Type A blood?

A. 25%

B. 50%

C. 100%

D. 0%

Answers

IAIB   X      iifrom this image you can deduct that the correct answer to this question is B.50%

Answer:

B

Explanation:

Which statement BEST explains the role of DNA in the growth and specialization of an organisms?

Question 2 options:

A.DNA stores genetic information


B.DNA directly controls your body.


C.DNA controls which proteins are produced in each cell for different functions.


D.DNA creates all the same proteins in each cell of the organism's body.

Answers

C.DNA controls which proteins are produced in each cell for different functions.

different genes can be activated or inactivated that's why even though the cells that line your stomach contain the gene for ACTH synthesis they don't synthesize it

Identify the parts of a good hypothesis?

Answers

Answer:

these are some of the answers i could come up with hope this helps

Explanation:

a good hypothesis is stated in the if then format.

a good hypothesis is testable

a good hypothesis is written clearly

a good hypothesis is educated

Answer this question please!!

Answers

nerve cell because neurons/nerve cells carries the nerve impulseso

PLEASE HELP ME!!!
A.) transport of molecules
B.) immune response
C.) energy conversions
D.) synthesis of new molecules

Answers

The answer is A because in the image it’s showing you a cell membrane and how it works and how it passed molecules through.

If cup b and cup e represent different ecosystems, how are they different

Answers

If you’re talking about bewibes

difference between D and DD with same band size is 1”, the same measurement difference as between an A cup and a B cup, a B cup and a C cup, a C cup and a D cup.
They’re different because there is 2 types of factors in our ecosystem. First is Abiotic factor in which non living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems while biotic factor is where any living component that affects another organism pr the shapes the ecosystem. Both components plays a huge role in our ecosystem

I need to know number 7. anything will help

Answers

Answer:

I'm not sure of the answer but I do believe it is C The Great Lakes

Which factor is most important for determining the phase in which a substance exists?
A. its volume
B. its density
C. its temperature
D. its mass

Answers

Answer:

The answer is Mass

The photo is above, please answer thank you!

Answers

Genotype:BB

Ratio:2/4

Percent:50%

Phenotype:black fur

Genotype:Bb

Ratio:2/4

Percent:50%

Phenotype:black fur

Which of the following is the main cause of earthquakes?

Answers

Answer:

Its plates shifting , making the ground ``shiver``

Explanation:

Rhinos and zebras will often be seen with small birds known as Oxpeckers on their back. This is because the Oxpeckers eat the parasites and other bugs that live on the zhino or zebra's skin. What type of ecological relationship is this?

1 Commensalism

2 Predation

3 Parasitism

4 Mutualism​

Answers

Answer:

4. Mutualism

Explanation:

mutualistic relationship

Answer: 2

Explanation:

PS love your hair

which body system gives your body structure?​

Answers

The skeletal system
The skeletal system I’m pretty sure

On February 21, a student observes that the Moon cannot be seen in the clear
night sky. On what date will the student not be able to see the Moon again in the
clear night sky?
A. February 28
B.March 7
C.March 14
D.March 21

Answers

Answer:

Okay so the answer is

C...

On February 21, a student observes that the Moon cannot be seen in the clear night sky. The date when the student is not able to see the Moon again is on March 21. The correct option is D.

What is the moon?

The moon is the only natural satellite of the earth. It is white and gray and visible from the earth on nights only. It is the fifth-largest satellite in the solar system.

The moon has different phases seen from the earth because the moon revolves around the sun. The four phases have been named full moon, no moon, C moon, and half moon.

In 28 days, the moon is not visible for one day, then the other day it is visible and C-shaped. The student was seen on February 21.

21 + 27 day means 21 march.

Thus, the correct option is D. March 21.

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HELP PLZ ! Which nitrogen base sequence is the partner of T-C-A-G-C-A?

A-C-G-A-C-T
C-A-G-A-T-G
A-G-T-C-G-T
T-C-A-G-C-A

Answers

Answer:

A-G-T-C-G-T

Explanation:

Please mark brainliest :)

Answer:

A-G-T-C-G-T

Explanation:

I'm timed!
Which of the following is not considered a natural science?
A. chemistry B. psychology C. biology D. physics
Please select the best answer from the choices provided A B C D

Answers

I believe the answer would be Letter
B. Psychology

Answer:

B: Psychology

okay thanks but who guessed I don't wanna fail please just tell me the truth ill do anything if your right​

Answers

it is A for sure i did that too and i got it right lol

Asexual reproduction (Mitosis) involves only one parent. The offspring of this type of reproduction have?

Answers

Answer:

The offspring of Mitosis will be identical daughter cells because there is only one set of DNA they can get from the parent.

Explanation:

Ethylene oxide is a highly flammable gas used to sterilize medical equipment. To prevent a fire hazard, ethylene oxide
should only be used in an area
O with open windows and doorways.
with non-flammable equipment only
O without fire extinguishers.
O without sparks or flames.

Answers

Answer:

without sparks or flames.

~+ lil more info +~

Ethylene oxide is a highly flammable gas used to sterilize medical equipment. To prevent a fire hazard, ethylene oxide should only be used in an area: without sparks or flames. ... To prevent a fire hazard, ethylene oxide should only be used in an area: without sparks or flames.

To prevent a fire hazard, ethylene oxide should only be used in an area without sparks or flames. Thus, the correct option for this question is D.

What is ethylene oxide?

Ethylene oxide may be defined as a type of highly flammable gas that is significantly utilized in order to sterilize medical equipment. It is a colorless gas with a sweet odor.

It is used primarily to produce other chemicals, including antifreeze. In smaller amounts, ethylene oxide is used as a pesticide and a sterilizing agent.

As this ethylene oxide is a highly flammable gas one must be required to keep this in a place or an area that is free from sparks or any other kinds of flames.

Therefore, to prevent a fire hazard, ethylene oxide should only be used in an area without sparks or flames. Thus, the correct option for this question is D.

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The human digestive system is comprised of specialized cells, tissues, and organs.

Which lists the parts from least complex to most complex?
a. muscle tissue, muscle cell, stomach
b. muscle cell, muscle tissue, stomach
c. stomach, muscle tissue, muscle cell
d. stomach, muscle cell, muscle tissue
Thank you!

Answers

Answer

OPTION B.

because from muscle cell ,muscle tissue arise and then after development  of muscle tissues organs are formed.

The parts from least complex to most complex is muscle cell, muscle tissue, stomach. So, the correct option is (B).

What is Digestive System?

The human digestive system consists of the gastrointestinal tract with the accessory organs of digestion which involve breaking down food into smaller and smaller components until they can be absorbed and assimilated into the body.

The GI tract consists of series of hollow organs which is joined in a long, twisting tube from the mouth to the anus. The processes of digestion consists of six processes:-

1. Ingestion

2. Propulsion

3. Mechanical or physical digestion

4. Chemical digestion

5. Absorption

6. Defecation.

The complexity of the digestive system involves muscle cell, muscle tissue, stomach and organ system from least complex to most complex.

Thus, the parts from least complex to most complex is muscle cell, muscle tissue, stomach. So, the correct option is (B).

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Describe the steps of protein synthesis in a eukaryote.

Answers

The first step in protein synthesis is transcription. The transcription consists of the synthesis of messenger RNA by an enzyme(RNA-polymerase). This process takes place inside the nucleus.

The second step is  translation the mRNA exits the nucleus and binds to a ribosome. Ribosomes are the sites of protein synthesis. For every three nitrogenous bases of the mRNA an amino-acid is synthesized. Amino acids are brought to the protein synthesis site by transfer RNA. From this process we are left with a polypeptide.

Transcription is the initial stage of the production of proteins. The process of transcription involves an enzyme producing messenger RNA (RNA-polymerase). The nucleus is where this process occurs.

What is protein synthesis in a eukaryote?

The mRNA exits the nucleus and attaches to a ribosome in the second step of translation. Protein synthesis takes place in ribosomes. An amino acid is created for every three nitrogenous bases in the mRNA.

Transfer RNA transports amino acids to the location where proteins are synthesized. We are left with a polypeptide after this procedure.

The primary level of regulation of eukaryotic gene expression is transcription.

Therefore, the process of transcription involves an enzyme-producing messenger RNA (RNA-polymerase).

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What are the definitions for gene pool and allele frequency?
A. the alleles for a species, the number of times a gene appears
B.the number of alleles: genes that appear in a population
C.all the alleles that appear in a population: the number of times the alleles appear
D.all the genes that are present in a population; the number of times an allele occurs in a gene pool​

Answers

Answer:

Allele frequency- the percentage with which a specific allele is found in a population. Gene Pool- the sum total of all alleles present in all populations of a particular species. ... evolution involved a change in allele frequency in a population's gene pool over a number of generations.

Explanation:

I hope this helps :)

A gene pool is defined as the number of alleles. and the allele frequency is defined as the  genes that appear in a population. Therefore, option B is correct.

What is gene pool ?

A gene pool is the collection of all the genes (including alleles) found in a population or species that is capable of reproduction. A big gene pool has a wide range of genetic diversity and is more resilient to environmental stresses.

A gene pool is the collection of all the genes, including all the various alleles, in any population that mates with other individuals from the same or different species. The percentage of an allele within a population is known as the allele frequency.

A population's gene pool will include a high number of genes with a wide range of frequencies. Gene frequencies are proportions of various alleles within a population, and in any given generation, these frequencies will rely on those of the previous generation.

Thus, option B is correct.

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[GT.02H]One scientist kept a radioactive material in a container. After two half lives, the amount of radioactive material left in the container was 2 grams. What was the original mass of radioactive material in the container? (4 points)
3 grams
4 grams
6 grams
8 grams

Answers

Answer:

6 Grams

Explanation:

Answer:

I believe the answer is A. 3 grams

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