Which is necessary for natural selection to occur?
adaptation
competition
reproduction
variation

Answers

Answer 1

Answer:

reproduction is nesscessary for natural selection to occur


Related Questions

Explain what mRNA, tRNA, ribosomes, and amino acids, codons, and anticodons have to do with making this clotting protein (in detail). And speculate how this knowledge could be used to correct the mutation to help create a correct clotting protein.

This is a question about hemophilia.

Answers

Answer: the language of proteins, based on amino acids. ... RNA (tRNA) also assist in the protein-assembly process. ... In the upcoming animation, you will see a ... Nucleotides in the mRNA are read 3 at a time (as codons) by the ribosome. ... amino acid, which is added to the polypeptide chain in the correct position.

Explanation: Ribosomes provide a structure in which translation can take place. They also catalyze the reaction that links amino acids to make a new protein. tRNAs (transfer ... Each tRNA contains a set of three nucleotides called an anticodon. The anticodon of ... Rules like this ensure codons are read correctly despite wobble. Wobble ...To use a little molecular biology vocab, these antibiotics block translation. ... With no way to make proteins, the bacteria will stop functioning and, eventually, die. ... These relationships between mRNA codons and amino acids are known as the genetic ... During initiation, these pieces must come together in just the right way.

When looking under a microscope comparing the muscle cell of an Olympic athlete and an average adult you notice there is a significant difference. What is the difference? Why does this difference exist?

Answers

Answer:

More mitochondria in athlete's muscle cells.

Explanation:

There is a significant difference in the muscle cell of an Olympic athlete as compared to an average adult because Olympic athlete has more number of mitochondria present in their muscles cells as compared to muscle cell of an average adult. The main reason for this is that Athlete performs harder activities so they required more energy to do their activities so their muscles cells have large number of mitochondria to provide more energy for their activities.

I need help due today please​

Answers

Answer:

fatality rate that is 23 times as high than for all regular workers

Answer:

commercial fishing can cause drowning and cause chemical hazards

What is the correct amino acid sequence for the given DNA sequence? TACACGTTCACC

A) methionine, valine, lysine, tryptophan

B) methionine, cysteine, lysine, tryptophan

C) methionine, cysteine, arginine, serine

D) serine, valine, lysine, stop

Answers

Answer:

The correct answer is - B) methionine, cysteine, lysine, tryptophan

Explanation:

Amino acid chain or sequence depends on the codes or the information mRNA is copied from the DNA sequence. The DNA sequence is the sequence of the nitrogenous bases that are coded or copied by mRNA in the complementary sequence and then translate into an amino acid sequence:

DNA:  TACACGTTCACC

mRNA: AUG-UGC-AAG-UGG

Amino acid sequence: methionine, cysteine, lysine, tryptophan

Animals like lions and wolves reproduce using sexual reproduction.
O True
False

Answers

Answer:

yes

there mammals so they need to have sexual reproduction compared to fish they dont need sexual reproductions to have a organism (baby)

Explanation:

Yes, the animals like wolves and lions reproduce by se-xual reproduction.

Se-xual reproduction in mammals:

The process of production of offspring by combining genetic components from two individuals of different se-xes, that is, male and female is termed se-xual reproduction. In higher animals like mammals, that is, lions and wolves, the process of se-xual reproduction takes place.

The mammals generate gametes, that is, egg and sperm via the process of meiosis in gonads, that is, ovaries in females and testes in males. The production of eggs takes place by the process of oo-genesis, and the production of sperm takes place by sperma-togenesis.

Afterwards the fusion of male and female gametes takes place, that is, the process of fertilization occurs and generate a diploid zygote.

Thus, the given statement is true.

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organism were originally classified into two kingdoms. Over time the number of kingdoms has expanded to six. Most recently these kingdoms were grouped into three domains. These changes in the classification system are most likely due to

Answers

Answer:

hmmm the climate

Explanation:

I think the answer is probably because of breeding meaning their could be a whole new species created because of breeding?

Which are examples of abiotic factors? Select three options.

sunlight
oxygen
rotting leaves
stones
fungi

Answers

Abiotic factors are non-living physical and chemical conditions that affect organisms. Such as:

++++++++++
Sunlight
Stones/rocks
Oxygen
++++++++++
Originally alive like rotting leaves are biotic Not abiotic

Sunlight, oxygen, and stones are the examples of abiotic factors. Therefore, the correct option is A, B and D.

What are abiotic factors?

Abiotic factors are the non-living components of an ecosystem that affect the organisms living within it. Examples of abiotic factors include sunlight, air, water, soil, temperature, and physical features such as rocks and mountains.

Option C, rotting leaves, is an example of a biotic factor, Option E, fungi, can be either biotic or abiotic, depending on the context. Fungi are living organisms and can be considered biotic factors when they are interacting with other organisms in an ecosystem.

However, they can also break down dead organic matter and contribute to the decomposition of organic material in the soil, which makes them an important part of the abiotic environment. Therefore, the correct option is A, B and D.

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The question is incomplete, but most probably the complete question is,

Which are examples of abiotic factors? Select three options.

A. sunlight

B. oxygen

C. rotting leaves

D. stones

E. fungi

Which statement explains the kinetic theory of heat?


A. Objects whose particles are at the same temperature are in thermal equilibrium.


B. Heat is transferred as thermal energy by the interaction of moving particles.


C. Objects are made of tiny particles, and their motion depends on the temperature.


D. An object's thermal energy is caused by the movement of the tiny particles that it is made of.

Answers

Answer:

A. Objects whose particles are at the same temperature are in thermal equilibrium.

Explanation:

Kinetic theory of heat is the temperature of a body that is determined by the average kinetic energy of its particles. Objects whose particles experience the same temperature are in thermal equilibrium. Thermal equilibrium means the stability of temperature of an object or no change occur in the body's temperature and the temperature remains the same.

In cows, the allele for red hair is HR and the allele for white hair is HW. In chickens, the
allele for black feathers is FB and the allele for white feathers is FW. For the following
individuals, which show co-dominance, write the appropriate genotypes:
a. a red cow ______________
b. a roan cow ______________
c. a white bull ______________
d. a white chicken ___________
e. a black chicken ___________
f. a speckled chicken _________

Answers

Answer:

See below

Explanation:

a. a red cow HRHR

b. a roan cow HRHW

c. a white bull HWHW

d. a white chicken FWFW

e. a black chicken FBFB

f. a speckled chicken FBFW

Identify landform B, explain how it forms, and tell whether it is the result of erosion or deposition.

Answers

Answer:

Erosion because if you look it looks like it is slowly eroding

Explanation:

There are ______ major phases in a cell cycle.
a) 1
b) 2
c) 3
d) 4

Answers

The answer is b) 2
shsiejsnneiwnejskke

The California current is an ocean current that moves cold water from the north along the west coast of the United States. The main effect of this current is to make the climate of the west coast .
A.
dryer
B.
warmer
C.
cooler
D.
wetter

Answers

Answer: D cooler

Explanation:

The California Current is a cold water Pacific Ocean current that moves southward along the western coast of North America, beginning off southern British Columbia and ending off southern Baja California Sur.

Answer:

cooler

Explanation:

Study island

If our orbit around the sun slowed down how would that affect the way we observe constellations?


PLEASE ANSWER:)

Answers

As it takes the sun about 250 million years to orbit the galaxy, the proper motion of stars relative to the Sun will be the dominant effect of changes in the sky. The visible effects of the rotation will be far slower.

All stars move in the sky, some faster some slower, and in more or less random directions, not just moving around the galaxy.

If the orbit around the sun slowed down, there won't be much effect about

how we view the star and it will only take the Earth more time to complete its

orbit around the Sun.

The solar system involve the following:

SunMoonPlanets etc

This is because the Stars don't revolve around the galaxy. They move at

random speed and directions as in the sky according to its conditions we

have right now. There will be no effect on how we view the constellations.

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Which type of energy is formed during the process of photosynthesis? A Chemical B Radiant C Thermal D Kinetic

Answers

Answer:

I'm not sure but I think chemical.

Explanation:

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

At which boundary may a mountain chain of sedimentary rock form?

Answers

Answer:

A mountain chain of sedimentary rock may form as a result of a convergent boundary of two continental crusts

Explanation:

Answer: convergent boundary of two continental crusts

Explanation: I got 100% on my K12

all of the chemical processes that occur in the body is called

Answers

Answer:

metabolism

Explanation:

u can look this stuff up its easier than waiting for an answer

metabolism (word limit)

The____is the thing being dissolved
A. Solute
B. Solution
C. Solvent​

Answers

Answer:

Solution?

Explanation:

B I think is the correct answer!

The solution have a good day pls mark me brainlest

series of experiments in which 32P-labeled inorganic phosphate were introduced to erythrocytes (red blood cells) undergoing glycolysis. Would you expect to see the labeled phosphate in any glycolytic intermediates

Answers

Answer:

The labeled inorganic phosphate will be found in 1,3-bisphosphoglycerate

Explanation:

In the fifth reaction step of glycolysis, glyceraldehyde-3-phosphate is oxidized by the enzyme glyceraldehyde-3-phosphate dehydrogenase to 1,3-bisphosphoglycerate. Two molecules of NAD+ are reduced to form two NADH + 2H⁺. The energy released by the oxidation process is used to add an inorganic phosphate group to position 1 of two molecules of glyceraldehyde-3-phosphate to form two molecules of 1,3-biphosphoglycerate.

In the sixth step, the two molecules of 1,3-biphosphoglycerate are converted to 3-phosphoglycerate, with the high-energy phosphate group in position 1 added to ADP producing 2 ATP through substrate-level phosphorylation.

Since in the experiments,32-P-labelled inorganic phosphate were introduced to erythrocytes undergoing glycolysis, the inorganic phosphates would be expected to seen in the molecules of 1,3-biphosphoglycerate. However, since, the phosphate group is subsequently added to ADP to form ATP, it will no longer appear in other intermediates.

Based on the cell theory, which of the following is true

a
All living and nonliving things are made of cells.

b
All cells are too small to be seen with the naked eye.

c
Small organisms have smaller cells than large organisms.

d
Large organisms have more cells than small organisms.

Answers

Answer:

B

Explanation:

I know this because, I'm very smart. :[

How do you think your body uses each of these nutrients? Explain your reasoning.

Answers

Answer:

Vitamins also help your body use energy from the food you eat. Minerals are chemical elements that help regulate your body's processes. Potassium, for example, helps your nerves and muscles function. Calcium helps your teeth and bones stay strong.

Which of the following prefer body temperature?


mesophile


barophile


neutrophile


thermophile


halophile

Answers

Answer:

I believe it's mesophile.

example of tissue please answer

Answers

Answer:

There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).

Explanation:

#Hope this helps

7. All of the organisms in an ecosystem comprise the?
a biosphere c. community
b. ecosystem d. population

Answers

Answer:

Biosphere-  a global ecosystem mad up of of living organisms (biotic) and the abiotic (nonliving) factors from which they derive energy and nutrients.

Explanation:

How does the excretory system work with the muscular system?

Answers

Answer:

How the Muscular and the excretory system work together. The Muscular system helps the Excretory system by moving waste through the body and protect its organs. The Excretory system helps the Muscular system by getting rid of carbon dioxide from the muscles.

Explanation:

TRUE OR FALSE: A coiled structure of DNA and protein that forms in the cell nucleus during cell division is called a chromosome

Answers

Answer:

TRUE!!!

Explanation:

In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

hope this helps! :D

A chromosome is a coiled DNA and protein structure that develops in the cell nucleus during cell division.

Thus, chromosomes are important for transporting and passing genetic information from one generation to the next. They house an organism's genetic material. When cells divide, they become visible under a microscope and take the form of compressed formations. Every species has a certain number of chromosomes.

Chromosomes are essential for cell division because they make sure that genetic material is accurately distributed to daughter cells. For effective cell function and heredity, they must have a compact and well-organized structure made of DNA securely coiled around histone proteins.

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What type of pathogen causes measles?

Answers

Answer:

measels is caused by a single stranded Rna virus of the family Paramyxoviridae

Identify a criterion and a constraint for lighthouse signals

Answers

Answer: The criterion and constraint for the identifying the lighthouse signals are as follows:

Explanation:

The constraints for the lighthouse signals are to the conditions that are to satisfied in accordance with the design. The display of the lighthouse can display a single flash which can repeat at 5, 10, and 15 seconds of the intervals.

A lighthouse is constructed near the seashore so that the water transportation vehicles can detect the light and reach to the shore.

What is not considered to be science

Answers

Answer:

math

Explanation:

math isnt science

How do cold ocean currents affect climate ?

Answers

Ocean currents act as conveyer belts of warm and cold water, sending heat toward the polar regions and helping tropical areas cool off, thus influencing both weather and climate. Land areas also absorb some sunlight, and the atmosphere helps to retain heat that would otherwise quickly radiate into space after sunset.

Which of the following is one of the roles of chloroplasts in plant cells?
a. storage of energy as heat
b. breakdown of sugar into energy
c. capture of energy from sunlight
d. capture of energy from food

Answers

Answer:

C.

Explanation:

Answer:

option C

Explanation:

CHLOROPLAST CAPTURES ENERGY FROM SUNLIGHT

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Please help quick! 3 questions if you answer all I will give brainliest1. Identify at least two tools scientists use to study stars and galaxies, then explain how the tools you chose assist scientists in their work. 2. Name at least three properties of stars revealed by spectral characteristics3. In 3-5 sentences, explain how a star is formed. 3(x+5) = x + 19solution please I need help with this !!! Which finger types the highlighted keys? Help me please thank you A farmer grows wheat, which she sells to a miller for $70. The miller turns the wheat into flour, which she sells to a baker for $120. The baker turnsthe wheat into bread, which she sells to consumers for $135. PLEASE DROP A CORRECT ANSWER!! 5(3-6x)=4(3x+7)+5xsolve the following equation step by step Prefix for hypocritical Which best describes why plagiarism can have legal consequences, such as lawsuits and fines?O It upsets the authors of original worksO It can harm the original author's reputation.O It is considered a form of stealing.It can lead to the Which one because Im really bad at this of a classof a class are girls.Note: Give your answersin their simplest forms.a) What is the ratio girls to boys in the class?b) What is the ratio boys to girls in the class? 10A. -2B. 351015O C. -3(-2, -3)5O D. 2(-4,-9)10Please help CAN I GET ANSWERS PLEASE, I TRY THE FORMULA AND MY TEACHER HAS A FAMILY EMERGENCY SO HE CANT RESPOND BACK SO PLEASE HELP ME which of these sentences display figurative language?my own fancy grew warm with the medoc.we had pass-through walls of piled bones with casks and puncheons. i made bold to seize fortunate by an arm above the elbow A) BajaImage 01B) BonitaImage 02C) RubiaImage 03D) PelirrojoImage 04Choice Worth 2 points)has the vocabulary needed to complete the sentenceses 04 16 77 04 Please help!!!!What can be inferred about the effect of learning music on a person's ability to excel in other subjects?A. Understanding of music theory can help to improve standardized test scoresin many subjects because it helps with pattern recognition and improves concentrationB. Learning music can help a student to improve their fine motor skills andminor muscle movement, which can help with some aspects of schoolinglike handwritingC. Students who take lessons in music are often inspired to join other extracurricular activities, so learning a musical instrument can help branch out their skill setD. There is a link between the learning of music theory and a student's ability to develop social skills so learning a musical instrument can help someone make new friends. five years ago ,a father was four times as old as his son.In five years time the father will be twice as old as the son.If x and y are the present ages of the father and the son respectively,the equation relating x and y are:Please I need an explanation The options areA: 4y-x=0;x-2y=0B: 4y-x=15;x-2y=5C: 4y-x=25;x-2y=5D: x-4y=15;y-2x=5 Question 3Reread this sentence. Which choice BEST explainswhether this is an emotional appeal or a logicalargument?Logan Bower, President of the Dairymen and ProfessionalDairy Managers of Pennsylvania, points out that the useof rb ST "was approved by the FDA only after being foundcompletely safe for the consumer, the cow, and theenvironment."A logical argument, because Boweris giving his expert opinion.A logical appeal, because it cites afact about the consumer, the cow,and the environment.An emotional appeal, becauseBower is well known but not anauthority on the subject of rbST.An emotional appeal, because ofthe loaded words "completelysafe." Can any kind soul help me ASAP!