what is natural selection?​

Answers

Answer 1

Answer: The process whereby organisms better adapted to their environment tend to survive and produce more offspring.


Related Questions

look at the following images, then in your own words, describe how they are different.

Answers

Animal cells have no cell wall and plant cells don’t have lysosomes. However, it is possible for plants to have a lysosome, but it’s rare

Answer:

they have different locations of where the foods are located

HELP!

In the desert, saguaro cacti, owls, horned lizards, and fire ants all share the same space.

Which example can be considered a population?

the lizards and the ants

all plants in the same area

all species in the same area

all saguaro in the same area

Answers

All species in the same area

Answer:

I did the test; proof

PLS HELP!! brainliest + extra points! it's easy but i didn't study tbh:)

Answers

Answer:

Guanine to Cytosine

Explanation:

G always matches C

A always matches T

Hope it helps

Plz mark Brainiest.

8. Which of these is the direct result of an error in the transcription of a DNA

nucleotide?

A. Amino acids do not bond to tRNA.

B. Transportation of mRNA does not occur.

C. The nuclear membrane is ruptured.

D. RNA sequence is incorrect.

CLEAR ALL

Answers

Answer:

D. RNA sequence is incorrect.

Explanation:

Genome editing can be defined as a high-tech process which avail scientists the opportunity or ability to remove (delete), replace and insert Deoxyribonucleic Acid (DNA) sequence in a living organism such as bacterias, animals, plants etc in order to correct a genetic disorder and to improve on their physical and chemical conditions.

Transcription can be defined as a process which typically involves re-writing the informations contained within a Deoxyribonucleic Acid (DNA) into a Ribonucleic Acid (RNA) by enzyme RNA polymerase.

When a RNA sequence is incorrect, it leads to an error in the transcription of a DNA nucleotide.

This ultimately implies that, an error in the transcription of a DNA nucleotide is the direct result of an incorrect codon sequence (RNA nucleotides).

3. In what part of Australia are koalas found? What do they eat?

Answers

they are found in eastern australia and they usually eat Eucalyptus

Answer: Koalas can be found in Eastern Australia - Through much of Queensland (From the Atherton Tablelands west of Cairns moving South), NSW, Victoria and a small section of South Australia. And Koalas eat Eucalyptus leaves.

Explanation:

What characteristics of the molecules being transported determines how they will cross the membrane?

A. Polarity and size

B. Size and mass

C. Passive or active

D. Charge and structure

Answers

The answer is C - passive or active

Which of the following are included as tools of biotechnology when using living cells and their components in different ways?



A.
working with cells, working with climate, working with molecules

B.
working with genes, working with breeders, working with proteins

C.
working with climate, working with breeders, working with molecules

D.
working with cells, working with proteins, and working with genes
PLEASE HELP! MARKING BRAINLIEST

Answers

Answer:

D. working with cells, working with proteins, and working with genes

Explanation:

Biotechnology is referred to as the application of genetic principles on living organisms in order to make useful products. Biotechnologist aims at studying the genetic composition of certain cells and manipulating it to make useful products.

According to this question, working with cells, working with proteins, and working with genes are included as tools of biotechnology when using living cells and their components in different ways.

1
Which of the following can be used to produce electrical energy?
OA. generators
B.
solar cells
C.
batteries
D.
all of these

Answers

D

They all produce electricity

Which plays a major role in determining which genes are expressed in a cell?
A. transcription factors
B.nothing, it is random
C.translating into spanish
D.your mother​

Answers

Answer:

A.

Explanation:

A crucial component of controlling transcription is played by proteins known as transcription factors. These crucial proteins aid in identifying the genes that are active in each of your body's cells. Thus, option A is correct.

What is the role of transcription factors?

Proteins called transcription factors control the expression of genes. They affect the transcription process, in which DNA serves as a template to create mRNA, which in turn affects protein synthesis.

Since many transcription factors are either tumor suppressors or oncogenes, cancer is linked to their mutations or abnormal regulation.

It is known that three transcription factor groups play crucial roles in human cancer.

Therefore, transcription factors play a major role in determining which genes are expressed in a cell.

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Describe what happens to the egg during the menstrual cycle on day 14. _______________________

Answers

Answer:Ok so A few days before Day 14, your estrogen levels peak and cause a sharp rise in the level of luteinizing hormone (LH). LH causes the mature follicle to burst and release an egg from the ovary, called ovulation, on Day 14.At about day 14 in the menstrual cycle, a sudden surge in luteinizing hormone causes the ovary to release its egg. The egg begins its five-day travel through a narrow, hollow structure called the fallopian tube to the uterus. hope this helps have a nice night ❤️❤️❤️

Explanation:

Answer: Because However, during days 10 to 14, only one of the developing follicles forms a fully mature egg. At about day 14 in the menstrual cycle, a sudden surge in luteinizing hormone causes the ovary to release its egg. The egg begins its five-day travel through a narrow, hollow structure called the fallopian tube to the uterus. The egg travels down the fallopian tubes. If pregnancy doesn't occur, the egg is reabsorbed into the body. Levels of oestrogen and progesterone fall, and the womb lining comes away and leaves the body as a period (the menstrual flow). The time from the release of an egg to the start of a period is around 10 to 16 days.

Explanation:

What is the function of T-lymphocytes? Select all
that apply.
to assist other lymphocytes
to produce other lymphocytes
to kill cells infected with a virus or cancer
to help in the body's immune response
to circulate oxygen throughout the body

Answers

Answer:

to assist other lymphocytes

to kill cells infected with a virus or cancer

to help in the body’s immune response

Explanation:

Following are the functions of T-lymphocytes, here:

to assist other lymphocytesto kill cells infected with a virus or cancerto help in the body's immune response

What are T-lymphocytes?

T-lymphocytes, also known as T cells, are a type of white blood cell that plays a key role in the immune system. They are produced in the bone marrow and mature in the thymus gland.

One of the main functions of T-lymphocytes is to assist other lymphocytes, such as B cells, in the immune response. They do this by releasing chemicals that help to activate and coordinate the immune response, and by directly attacking infected cells.

T-lymphocytes also have the ability to kill cells that are infected with a virus or cancerous cells. They do this through a process called cell-mediated immunity, in which they recognize and bind to specific proteins on the surface of infected cells. Once they have bound to the infected cells, they release chemicals that kill the cells, helping to prevent the spread of the infection or cancer.

T-lymphocytes are an important part of the body's immune system and play a vital role in helping to protect the body against infections and disease.

Learn more about T-lymphocytes, here:

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what cellular processes happen during mitosis?

Answers

Answer:

the eukaryotic cell undergoes many phases to result in two daughter cells.

prophase

prometaphase

metaphase

anaphase

telophase

Answer:

A eukaryotic cell goes through a few (4) phases to split into two identical daughter cells.

Explanation:

Prophase, metaphase, anaphase, and telophase are the 4 phases.

1st phase: nuclear envelope disappears and chromosomes become visble

2nd phase: chromosomes line up at the middle of the cell (metaphase plate I believe it’s called), to get ready to divide.

3rd phase: replicated chromosomes split and move to different ends/poles of the cell.

4th phase: 2 nuclei form, including 2 identical daughter cells.

Hope this helps, my bio’s kind of rusty though so I’d research this more if I were you :)

2. Wolves have genes that give them a very powerful sense of smell much more
powerful than humans, this is an adaptation by natural selection. The wolves that
reproduced more offspring with a better sense of smell thereby increasing the
frequency of those genes in the population that survived longer. Give an example of
adaptations in other organisms that may have resulted from variations that were
favored by natural selection.​

Answers

Answer:

A good example may be represented by different shapes and sizes of beaks in finches living on different Galapagos islands

Explanation:

According to the evolutionary theory proposed by Darwin, natural selection is a mechanism that acts on heritable phenotypic variation among individuals within a population. Genetic variation can be considered as the primary source of heritable phenotypic variation. Those organisms that are better adapted for a particular environment will have more chances to survive and reproduce, thereby passing these heritable traits to the next generation. For example, during his work, Darwin observed that the shape and size of beaks in finch species from different islands in the Galapagos archipelago varied as a consequence, i.e., as an adaptation, to the availability of food resources present in each island.

An example of adaptations in other organisms that may have resulted from variations that were favored by natural selection. - The light-colored mice are an adaption favored by natural selection as they were able to live longer.

Adaptations are physical or behavioral traits that make an organism better suited to its environment. The inheritable variation comes from random mutations.

the example of such variations caused by natural selection are:

The Deer mouse adapted to the environment by developing a lighter color.The light-colored mice were able to live longer.

Thus, The light-colored mice are an adaption favored by natural selection as they were able to live longer.

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A biology student was observing a specific type of cell. It had DNA,
ribosomes, and cytoplasm. What type of cell was she probably
observing

Answers

It was probably an Animal cell

Answer:

she was probably observing a prokaryotic cell.

Explanation:

:)

At Happy Harry’s Laundromat, the dryer costs $1.50 for 10 minutes. At Jolly Judy’s Laundromat the dryer costs $2.25 for 15 minutes. Which laundromat offer the better deal?

Answers

They are equal I think

Water is a
compound. How do these images of water illustrate
this? Provide evidence to support the claim. Explain
your reasoning

Answers

Answer:

Is made up of different kinds of atoms chemically combined.

Explanation:

List two types of chemical erosion

Answers

Answer:Oxidation and Hydrolysis

Answer:

The most vivid examples of chemical erosion are caves and sinkholes created in areas with a lot of underground limestone that ends up dissolving from acidic groundwater.

Explanation:

Hydrolysis - the breakdown of rock by acidic water to produce clay and soluble salts. Oxidation - the breakdown of rock by oxygen and water, often giving iron-rich rocks a rusty-coloured weathered surface.

You can use either examples

I understand what earth outer layer is made of underneath the water and soil on the surface

Yes
Or
Not yet

Explain

Answers

Yes because the earths outer layer is made of water and soil underneath the surface

The planet earth being a terrestrial planet is made up of rocks and hard rigid slabs of rocks called plates. These plates float on the flexible (asthenosphere) Mantel.

I understand that earth is a rocks planet and is made up of rocks and these rocks are called plates.

This uppermost layer or the crust of the lithosphere is composed of SIAL that is rocks made from aluminum and silicon, oxygen components. The layer lying below this is made from the semi-fluid matter called as upper mantel that is the asthenosphere which is partly molten and is said as molten rock. Due to the less dynamicity of this layer the above crust floats or drifts.  

Hence the water and soil in the lithosphere are characteristic of the crustal rocks.

brainly.com/question/21338656.

Fill In The Blank
What is the strongest acid listed in 2-2?
What is the weakest acid listed in 2-2?
What is the strongest base listed in 2-2?

Answers

Answer:

Strongest acid is hydrochloric acid

Weakest acid is rainwater

Strongest base is sodium hydroxide

Explanation:

pH is defined as the measure of hydrogen ion concentration in a particular solution. pH values seen between 0 and 1 are actually known to be strongest acids. Weakest acids are the ones that move towards neutrality. The neutral pH value is 7.0.

Looking at their pH values, we will discover that hydrochloric acid is the strongest acid. Rainwater is weakest acid because it moves towards neutrality. Sodium hydroxide is the strongest base.

In pH, values between 0-6 are referred to being acidic, 7 is neutral and while 8-14 are basic.

Answer:b

Explanation:

I WILL GIVE BRAINIEST
Please help with these questions!!

Answers

The one on the left is ligase and the one in the right on top is polymerase bottom is helicase

Why does our body need to turn ADP into ATP?

Answers

ADP is converted to ATP for the storing of energy by the addition of a high-energy phosphate group.

What are some of the main characteristics of life?

Answers

Me and you are the main characters

The Characteristics of Life Living things include both the visible world of animals, plants, and fungi as well as the invisible world of bacteria and viruses. On a basic level, we can say that life is ordered. Organisms have an enormously complex organization.

Explanation:

please help me i need it please

Answers

Answer:

first one is false

Explanation:

Which of these is NOT an organ found in the excretory system that helps to filter out liquid wastes in our body?
-kidneys
-lungs
-Skin
-heart​

Answers

Answer: The heart.





Explanation: This is asking for an organ in the excretory system. The heart is above

Answer:

the heart

Explanation:

_trophs often make their own food using sunlight,
carbon dioxide, and water.
Any body please help please thank you so muchhhhh

Answers

Answer:

Autotrophs

Explanation:

Hope this is helpful

What is a change in an organism that allows for it to survive in its
environment?
A.homologous
B.vestigial
C.variation
D.adaptation

Answers

Answer:

d adaptation

Explanation:

its an adaptation because its a change that helps the organism survive

if an object has a mass of 580g what does it weigh

Answers

Always convert first to kg

So 580 g is 0.58 kg

Now it depends on which planet you are on, to what gravity the planet has. Lets go with Earth so 10N

0.58 x 10= 5.8

Ans) 5.8 N/kg

Which of the following is NOT used in logos?

Answers

Answer:

Legos i am pretty sure

Explanation:

what characteristics describes an old river​

Answers

Answer:

Rivers possess different features as they age. Old rivers usually have a low stream (gentle) gradient and low erosive energy. They usually have broad U shape, the water is usually brown and they have flood plains. Seasonal floods are also common.

Bacteria cells can be used to produce insulin for the treatment of diabetes in humans. Which best explains how the bacteria cells are able to produce insulin for humans? (8.L.2.1) *
A. The bacteria have been grown on a petri dish containing insulin.
B. The bacteria have been genetically engineered to contain the DNA needed to produce insulin.
C. The bacteria have been exposed to radioactivity to create mutant strains capable of producing insulin.
D. The bacteria have been grown on a petri dish containing sugar; the bacteria produce insulin in response to the sugar.

Answers

Answer:

Your answer is B), I took this quiz already.

The statement 'bacteria have been genetically engineered to contain the DNA needed to produce insulin'' BEST explains how bacterial cells are able to produce insulin for humans (Option B).

Recombinant DNA (rDNA) refers to the genetic engineering strategies used to create genetically modified organisms capable of expressing exogenous DNA sequences.

The rDNA technologies involve the use of specific proteins that cut (restriction enzymes) and paste (ligase enzymes) target nucleotide (DNA) sequences in order to design organisms containing such sequences.

The recombinant DNA can be expressed into a suitable vector (in this case, bacteria) in order to produce a protein of interest (e.g., insulin).

In conclusion, the statement 'bacteria have been genetically engineered to contain the DNA needed to produce insulin'' BEST explains how bacterial cells are able to produce insulin for humans (Option B).

Learn more in:

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