Biology College

9. What is one way that changes can occur in a DNA sequence?
through advancements in molecular biology
as a result of an extensive DNA analysis
as a result of shared common ancestry
through mistakes during DNA copying

Answers

Answer 1
The answer is A, through advances in molecular biology.
Answer 2

Answer:

through mistakes during DNA copying

Explanation:

gradpoint

Related Questions

3. Carrying capacity is the _size of a population that can be supported by an area.

Answers

Answer:

Explanation:

Carrying capacity is the maximum number of individuals of one species that a particular environment can support. Limiting factors determine this number.

Why the organisms are keystone species using species?

Answers

Answer:

In a marine ecosystem, or any type of ecosystem, a keystone species is an organism that helps hold the system together. Without its keystone species, ecosystems would look very different. Some ecosystems might not be able to adapt to environmental changes if their keystone species disappeared.

Which place on an enzyme binds a substrate?

Answers

The location within the enzyme where the substrate binds is called the enzyme's active site. The active site is where the “action” happens, so to speak. Since enzymes are proteins, there is a unique combination of amino acid residues (also called side chains, or R groups) within the active site

What is the mRNA sequence for this segment of DNA, ACTGACTGACTG?

Answers

Answer:

See below.

Explanation:

DNA-

ACTGACTGACTG

mRNA-

UGACUGACUGAC

-hope it helps

Can anyone help me please!

Answers

Answer:

I think its a plant cell

Explanation:

A plant cell also contains structures not found in an animal cell. Some of these include a cell wall, a large vacuole, and plastids.

it’s a plant cell.

you can tell because of the chloroplast. and the boxy nature of the cell.

3. List the possible ecological interactions between the organisms listed below. Hint: Use Table 1 in the introduction.
a. Owl-Owl:
b. Owl-mouse:
c. Owl-trees:
d. Owl-tick:

Answers

Answer:

I think it's B. Not very sure.

Explanation:

Answer:

b

Explanation:

Hi, i'm a 37 year old male, and I was wondering why my pp is so small. My girth is about .7 inches and length is 3.5 inches when erect. I was wondering if there are any natrual (organic) remedies I could follow to increase length and girth. Should I do more nut-ups? It does not help that I am extremely obese and when it is flaccid it goes inside my body. Anything helps! Thanks guys!

Answers

Answer:

Dont be a phat batch

Explanation:

please help!! :(( The total amount of mass before and after a chemical reaction is the same. Thus, mass is ______.

Answers

Answer:

Constant

Explanation:

Answer:

Explanation:

In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. ... The law of conservation of mass states that the total mass of substances taking part in a chemical reaction is conserved during the reaction.

Question 1-9
An exoplanet is a planet in a different solar system than the one in which we live. Scientists have discovered many exoplanets that are many light years away. Predict which pattern is true about exoplanets.
O Exoplanets would orbit their own stars instead of the Sun
O Exoplanets have a large mass
Exoplanets have many moons
Exoplanets orbitour Sun

Answers

Answer:

Exoplanets would orbit their own stars instead of the Sun

Explanation:

Our solar system is defined by the planets and other celestial objects which orbit the sun, a star. Exoplanets do not orbit our sun, but are orbiting their own star.

Nothing would guarantee that any amount of exoplanets would have a moon.

The size of a planet is a defined term based on size, but it doesn't necessarily have to have a large mass to be a planet.

Which clastic sediment has the smallest grain size?



a. sand

b. clay

c. pebbles

d. gravel

Answers

Answer:

Your answer is B,Clay.

Explanation:

Silt is the name of a sediment grain that range in size from 0.625 mm to 0.0039 mm. Mud is the smallest grain size and is also known as clay.

Your answer should be B

a neuron consists of a large cell body with
A. Multiple dendrites and multiple axons
B. Multiple dendrites and one axon
C. one dendrite and one axon
D. one dendrite and multiple axons​

Answers

The answer is B, Multiple dendrites and multiple axons.

1-When you get sick, should you take an antibiotic that a friend or family member offers you (this includes your mom!)? Why or why not?
2- Let's say you're sick and your doctor prescribes you an antibiotic that you have to take for 7 days. If you feel better after 4 days, should you continue taking the antibiotic for the full dose, or stop taking it? Why or why not?
3-If you have a virus, will taking antibiotics cure your infection? Why or why not?

Answers

Answer:

No, because they are not a physicianYes, I will continue to make myself more healthy it depends on the virus

fats and oils are examples

A( carbohydrates
B( lipids
C( proteins
D( nucleic acids

Answers

The answer is A lipids
The answer is A i believe

HELPPP 7TH GRADE SCIENCE, GIVING BRAINLIEST!!

Answers

Answer:

The first answer is Gravity and Energy from the sun.

Explanation:

Gravity forces pressure on to the rocks causing their different phases and Energy from the sun is the other because the water cycle includes evaporation which is caused by the sun.

Gravity and Energy from the sun is the first one

A bird is eating a grasshopper, which had eaten some plants. How is energy being passed to the bird? (A Indirectly from the grasshopper (B .Directly from the plant (C Directly from the sun (D Indirectly from the plant( science)

Answers

In a food chain is simply a network of supply of energy beginning from the producer to the final consumer.

The correct options are

D Indirectly from the plant( science)

Energy Transfer in Food Chain

Summary of the Energy Transfer

The flow of energy from the grasshopper to the bird is a direct flow, also the flow of energy from the plant to the grasshopper is a direct flow, this is so because there are not middle agent between the two organisms stated above.

When there is a middle agent, then the flow becomes and indirect flow.

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Answer:

Indirectly from the plant

Explanation:

I got it right on my quiz... hope this helps!!

Mention four ways to keep your environment clean​

Answers

Answer:

Recycle, Drive your car less, Save water, and Save Electricity

Explanation:

The photograph shows rockweed. Which feature allows rockweed to
withstand the constant wave action of its environment?
A. The ability to carry out chemosynthesis
B. The ability to firmly attach to rocks
C. The ability to produce its own light
D. The ability to carry out photosynthesis

Answers

Answer:

B

Explanation:

This is the answer because if the rockweed is able to firmly attach its self to the rocks it would be able to withstand the constant wave action

The tendency to firmly attach to rocks allows rockweed to withstand the constant wave action of its environment.

Rockweed

It is a brown alga and grows in the rich intertidal zone.

The holdfast of a rockweed permits it to withstand the constant wave action of its surroundings.

Holdfast is a tiny stem-like composition which allows the weed to anchor firmly to the rocks.

The rockweeds possess some of the advantages over the normal weeds that permits them to sustain in water like the intense developed root systems.

Thus, the correct answer is option B, that is, the ability to firmly attach to rocks.

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Which of these is an example of how the ocean plays an important role in climate change? ( 10 points)
Group of answer choices

Circulation in the ocean creates warm and cold currents that affect the air temperature.

Aquatic animals produce carbon dioxide during respiration which causes warming of ocean waters.

Aquatic plants release oxygen during photosynthesis which helps keep the climate cool.

Water vapor escapes from the ocean's surface during day time and reduces the effect of warming due to greenhouse gases.

This is Earth Science :)

Answers

Answer:

The first one Circulation in the ocean creates warm and cold currents that affect the air temperature.

Explanation:

Choose the term that best matches the description given.
A (blank)
is a replicating set of stem cells from one blastocyst.
stem-cell line
stem-cell research
pluripotent cell

Answers

Stem cell line I believe

Summarize what reasherchers did to improve the quality of post mining sites soil in

Answers

Answer:

The researcher centred on the potential uses of biochar, charcoal primarily used for agricultural and to improve the quality of post mining sites.

A method called mountaintop removal was used by mining firms. This means that they remove rock and mineral deposits off the top of the mountain to gain access to within the coal seams. The resulting soil is infertile and strongly acidic. The compacted soil after mine proves harder to  bring seed into the soil.

The researchers  try to use biochar to help reforest the soil at the post-mining site. Before it was reseeded and replanted, they got permission to add a layer of biochar to a post-mining site. the team created “planting cells” of biochar‐enhanced soil on the post‐mining site and that showed improvment in the sapling growth.

Explanation:

High levels of salt (Na Cl-) can disrupt the tertiary structure of proteins. What effect do you think increasing concentrations of salt would have on lactase activity

Answers

Increasing concentrations of salt would disrupt lactase activity by disrupting its tertiary structure. This enzyme breaks down lactose.

What is an enzyme?

An enzyme is a protein that acts to lower the activation energy of a given chemical reaction.

Lactase is an enzyme that acts to break down lactose (a disaccharide) into galactose and glucose.

Different conditions in the media (in this case, concentrations of salt) may disrupt enzyme activity by altering its tertiary 3D structure.

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Which of the following activities occurs in both prokaryotic cells and eukaryotic cells?
A: Proteins are assembled on ribosomes.
B: A large central vacuole stores DNA and RNA.
C: Mitochondria provide energy for cell processes.
D: Chloroplasts capture and transform the energy of sunlight.
E: The rough endoplasmic reticulum releases enzymes to break apart wastes.

Answers

Answer: A

Explanation: The correct answer is option A because it is the only answer where it occurs in both prokaryotic and eukaryotic cells.

Option A: Proteins are assembled on ribosomes. is correct.

Cells fall into following two broad categories.

Prokaryotic Eukaryotic

Prokaryotes are single-celled creatures belonging to the Bacteria and Archaea domains. Eukaryotes include animal cells, plant cells, fungus, and protists. Prokaryotic cells do not have a nucleus. Cells with a nucleus are referred to be eukaryotic cells. Aside from the nucleus, eukaryotic cells have other organelles. Ribosomes are the only organelles in a bacterial cell.

Proteins are assembled on ribosomes.

So, option A. is correct.

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A disadvantage of ________ reproduction is that offspring generally have more competition for resources, such as food and living space.

Answers

Answer: asexual

Explanation:

A disadvantage of asexual reproduction is that offspring generally have more competition for resources, such as food and living space

Answer:

Asexual

Explanation:

Compare the frequency of the alleles for STR loci FH19, FH60, FH67, FH71, and FH129 that you completed in Table 3 with the values in Table 5. Why do you think the values differ?

Answers

Allele is the versions of a gene and it can be either dominant or recessive.

What are alleles?

Your information is incomplete as the table isn't given. Therefore, an overview of alleles will be given.

Alleles are variant form of genes. In genetics, it should be noted that genes show deviations. Therefore, alleles make up the genetic information which defines the gene.

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What do hypotheses, theories, and laws have in common?
data
predictions
explanations
observation

Answers

Predictions is the right answer

Answer:

observation

Explanation:

Salt marshes are
A) found in temperate intertidal zones
B) too salty (saline) for most species found in the intertidal zone
C) found where mangroves grow along shorelines
D) typically found on remote tropical islands
E) typically found wherever violent wave action scours a shoreline

Answers

Salt marshes are too salty for most of the species that are found in the intertidal zone is the correct statement.

What are salt marches?

Salt marshes are coastal wetlands that are drained by salt water which is brought by the tides. They are marshy because the soil may be composed of deep mud and peat so we can conclude that Salt marshes are too salty for most species found in the intertidal zone.

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The correct option is "A" which is found in temperate intertidal zones.

What is a salt marsh?

Salt marshes are coastal wetlands that are flooded and drained by salt water brought in by the tides. They are marshy because the soil may be composed of deep mud and peat.

Thus, the option is "A" which is found in temperate intertidal zones.

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Which are the four major groups of human pathogens?

A. bacteria, Viruses, Fungi and Protists
B. Protists, insects, bacteria and viruses
C. Fungi, Protists, Toxins and Bacteria
D. Viruses, Fungi, Protists and Toxins​

Answers

I believe the answer is A.

Bacteria, Viruses, Fungi and Protists are the four major groups of human pathogens. Therefore, option (A) is correct.

What are human pathogens?

Bacteria are microorganisms that are made up of a single cell and can be the source of illnesses such as strep throat, TB, and infections of the urinary system. The common cold, influenza, and COVID-19 are all illnesses that can be caused by viruses, which are non-living particles that can only multiply inside of a living host cell.

Infections such as ringworm, athlete's foot, and thrush can be caused by fungi, which are multicellular organisms that can spread from person to person. Protists are single-celled organisms that are capable of causing a variety of diseases, including giardiasis, malaria, and amoebic dysentery.

Insects and toxins, despite the fact that they are capable of inflicting harm on humans as well, are not considered to be major classes of human pathogens.

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Melting
e following question
eous rocks are formed?​

Answers

Igneous rocks are formed by the cooling and hardening of molten material called magma . The word igneous comes from the Latin word igneus, meaning fire. There are two types of igneous rocks: intrusive and extrusive. Exam- elation: Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet. When lava comes out of a volcano and solidifies into extrusive igneous rock, also called volcanic, the rock cools very quickly. Rocks are formed on Earth as igneous, sedimentary, or metamorphic rocks. Igneous rocks form when rocks are heated to the melting point which forms magma . ... This changing of rock types is called the "Rock Cycle". Solid rock can be changed into a new rock by stresses that cause an increase in heat and pressure. A rock is a naturally formed, non-living Earth material. Rocks are made of minerals. The minerals may be so tiny that you can only see them with a microscope.
Igneous rocks contain randomly arranged interlocking crystals. The size of the crystals depends on how quickly the molten magma solidified: magma that cools slowly will form an igneous rock with large crystals. lava that cools quickly will form an igneous rock with small crystals. their visual appearance shows individual crystals interlocked together to form the rock mass. The cooling of magma deep in the Earth is typically much slower than the cooling process at the surface, so larger crystals can grow. Intrusive igneous rocks form in magma chambers that are deep underground. Many kilometers below the Earth's surface, molten rock called magma flows into cracks or underground chambers. There, the magma sits, cooling very slowly over thousands to millions of years. An intrusion is a body of igneous (created under intense heat) rock that has crystallized from molten magma. Gravity influences the placement of igneous rocks because it acts on the density differences between the magma and the surrounding wall rocks (country or local rocks). The most common river rocks used in landscaping and decorative construction are made of granite. Granite belongs to the "intrusive" category of igneous rock, which means it formed below the earth's surface as magma slowly cooled and crystallized. The rocks that form Earth's crust are continually destroyed and remade in an endless process called the rock cycle. Rock is formed by melting; by cooling and solidifying; by changing through heat and pressure; by weathering and erosion; and by compression and cementation.

What is the function of a top predator in an ecosystem? (1 point)

O It increases the food for other predator species.

o It creates imbalance in the ecosystem.

o It helps increase the number of prey.

o It maintains other populations.

Answers

It’s d your welcome.

What is the wave speed of a deep water wave if the wavelength is 48.2 meters?

Answers

The value of the frequency of the wave was assumed to be 50Hz and the speed was computed to be 2410 m/s

Wave and Motion

Given Data

Wavelength = 48.2 metersFrequency f = 50 Hz (Assumed value)

We know that the relationship between speed, frequency and wavelength is given as

v = fλ

Substitute our values and solving for velocity(Speed) we have

v = 50*48.2

v = 2410 m/s

Hence the speed of the wave is 2410 m/s

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Other Questions
A charge of 6. 4 107 C experiences an electric force of 1. 8 101 N. What is the electric field strength? 1. 1 107 N/C 3. 6 106 N/C 8. 2 100 N/C 2. 8 105 N/C. Bella works at a popular clothing store. Last winter, her manager asked her to track the store's sweater sales. This box plot shows the results. Price of sweaters sold ($) 30 40 50 60 70 80 What fraction of the sweaters cost $50 or less? plz tell me if this essay is good also plz tell me if i made a mistake or two or three or you get the point also can you give me some ideas for the conclusion.(here is the prompt) Were the Founding Fathers justified in rebelling against the British government and declaring independence?In a well-developed essay that includes an introduction, body paragraphs, and a conclusion, explain whether or not the Founding Fathers were justified in declaring independence. Be sure to address counterclaims in your essay and include reasons and evidence to support your argument.(here is the essay)Imagine you are part of the colonies in 1765 and the Stamp Act was just enacted. You're enraged so you go along with the constant chant of "Taxation without representation is tyranny". Soon, chants for representation turn to chants of complete separation! These chants lead to mass anarchy with people declaring their right to be free from Britain. Declaring independence was justified especially after the Intolerable Acts. The British passed several laws such as the Boston Port Act, Massachusetts Government Act, Administration of Justice Act, and the Quebec Act just to name a few .These atrocious laws required the colonies to do things such as closing the port of Boston, having its royally-appointed governor have wide-ranging powers,and granted emancipation for the Catholic, French-speaking settlers of the province.While some may say that the war was justified in declaring independence was not. The British were the first ones to fire, sparking the war therefore making it justified. maybe considered Declaring independence was not justified given they could have stayed and then everything would have stayed the same.However looking at the details you can see that declaring independence was very much justified particularly because they wanted to get away from the Intolerable Acts and the Boston Massacre and they had every right to. In conclusion the Founding Fathers were very much justified in rebelling against the British as well as declaring Independence. ideazalso i'm giving 50 points because i'm nice (: Single-celled organisms that do not contain their genetic material in anucleus are called When calculating a loans effective interest rate, if the nominal rate is 8.5%, what value of i do you plug into your equation? a. 8.5 b. 0.85 c. 0.085 d. 1.85 How many years is the early childhood stage of development? given:-x-4=9 prove:c=-13Statements Reasons1. -x-4=9 1. Given2. -x=13 2. 3. x= -13 3. Divison Property of Equality a. addition property of equalityb. subtraction property of equalityc. divison property of equalityd. multiplication property equality Francisco makes $10 per hour doing part-time work on Saturdays. He spends $5 on transportation to and from work. The equation y = 10x 5 gives his earnings y, after transportation costs, for working x hours. Complete the table of values for this situation. I need help with this can someone PLEASE HELP X + Y = -2 What is y Adaptive reactions to fear can be seen in all the following ways except __________. A. Fear can unite individuals B. Fear improves sensory perception C. Fear can lead to irrational behavior D. Fear can motivate one toward action Please select the best answer from the choices provided A B C D. what is the thing that can cry but it won't have a face, it can fly but don't have wings?good luck, lol Why did the early explorers need the support of a rich benefactor? why do ppl have big foreheads Read these two paragraphs from Common Sense. They are both meant to persuade Americans against what?a revolt against British Loyalistsan independent Americaa peaceful compromise with Britain square root of 70 is rational or iftationet The equation of a line given two points needs to be found. Samuel claims that slope-intercept form will generate the equation and Helena claims that point-slope form will find the equation. Who is correct? Explain your reason by describing both forms.Please help me with this question. 1. Triangle XYZ has angle XYZ=42 degrees, YZX= 50 degrees and YXZ= 88 degrees. What is the midsize side? The Washington Monument is 555 feet tall. Was the number 5 significant to the ancient Egyptians How did Barbarians play a role in the decline of the Roman empire?