What can cause DNA to mutate?
a
Mutations can be caused by errors in
replication.
b
Mutations can be caused by mutagens in the
environment.
C Both A and B
d None of the above

Answers

Answer 1
C is what I got and I got it right.

Related Questions

concentration.
a. The video clip explains that you can also look at water as moving to a
concentration of solute molecules.
b. Why can it also be viewed this way?

Answers

Answer:

A. The video clip explains that you can also look at water as moving to a HIGHER concentration of salute molecules.

B. Why can it also be viewed this way?

Because there is more salute and less water.

In eukaryotic cells, DNA is packaged with proteins into structures called
chromosomes. What advantage do chromosomes provide the cell?
a. They ensure equal division of genetic material when a cell divides.
b. They allow random distribution of genetic material when a cell divides.
c. They allow all genes to be expressed at the same time.
d. They eliminate the need for a nuclear membrane.

Answers

Answer:

A

Explanation:

Question: In an area where a river has cut deep into Earth, there are several layers of very different rock exposed. The oldest rock layer is most likely to be the layer that is A Below the other layers. B The thickest layer. C The most rich in fossils. D Igneous intrusive rock.​

Answers

Answer:

C

Explanation:

The oldest rock layer is most likely to be the layer that is The most rich in fossils.

What are types of rock layers  ?

A rock layer is defined as the formation of the aggregation of different mineral constituents in the  earth’s crust and the classification of rocks layer is based on different factors such as  Geological classification, Physical classification, Chemical classification.

Geological classification of rock layer include Sedimentary rock  formed by the sediments deposition by the weathering of pre-existing rocks and the sediments can be spread by different agents like water, wind, frost, gravity, etc. Examples are Sandstone, limestone, lignite, etc.

Igneous rocks formed by solidification of magma below the earth’s surface, unable to descend, these magma cools down  and solidifies into igneous rocks.

Metamorphic rocks formed  by the metamorphism process where the f the pre-existing rocks is changed by the influence of heat and pressure, for example Slate, Gneiss, Schist, marble, soapstone etc.

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2. "Natural selection is usually thought of as an agent of change in populations, but it can also act to maintain the status quo."
In a short, written response, analyze and evaluate this statement. Include the range of responses of a population to changes in the environment, such as differential reproductive success, the adaptation and development of diversity in and among species, and the change in populations.

Answers

Answer:

Those organisms survive and maintain its population who are chosen by natural selection.

Explanation:

This statement means that when the population experiences a new set of environmental conditions, two things are happened i. e. the population either adjusts through natural selection or becomes extinct. The fossil of dinosaur indicates that extinction occur due to changed in the environment. If the population made changes in itself and adapt the environment then the organism survive otherwise extinction occur.

The Linnaean taxonomic system classifies organisms into divisions called taxa. If two
organisms belong to the same taxonomic group, they are related. Similarity at which of these
levels indicates the closest relationship?
E. Kingdom
G.
Class
H.
Order
J.
Genus

Answers

Answer:

Genus

Explanation:

The level that represent the closest relationship is to be considered as the option J i.e. Genus.

The Level that represent the closest relationship?

The genus refers to the taxonomic rank that lies between the family and species. The group of an organism in a genus shared various structural similarities and they are closely related.

The members of gene should be more related to each other as they belong to the other genera in the similar family.

hence, the option J is correct.

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1. Which of the following would not be considered part of a niche?
O where the organism lives
O the prey of the organism
when an organism dies
O how far an organism travels to eat

Answers

Answer:

How far the orginisme travels to eat.

Explanation:

How do proteins and amino acids affect how we think and behave?

Answers

Answer:

proteins and amino acids, the building block nutrients of growth and development, manipulate how we feel and behave. Amino acids contain the precursors to neurotransmitters, the chemical messengers that carry signals between neurons, affecting things like mood, sleep, attentiveness, and weight.

Explanation:

If you could erase one invention from existence, what would it be and why?

Answers

Answer: sports lol

evidence :

Answer:

I would erase cigarettes from existence, so people can quit damaging their mind and their lungs.

Explanation:

If I have 8 DNA nucleotides, how many
DNA
bases do I have?
How many base pairs?

Answers

Answer:

Each nucleotide contains phosphate, sugar (of the deoxyribose type), and one of the four bases (Figure 8-4). When the phosphate group is not present, the base and the deoxyribose form a nucleoside rather than a nucleotide. The four bases are adenine, guanine, cytosine, and thymine.

Explanation:

Energy from the sun provides energy for all the organims in an ecosystem.

Answers

Answer:

The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.

Earth’s temperatures are stable because we are surrounded by ________ which allows the right amount of sunlight in to warm the Earth. *

Answers

Answer:

Atmosphere

Explanation:

Which product is the result of light reactions in photosynthesis? O A. Water B. Glucose O c. Carbon dioxide OD. Oxygen ​

Answers

Answer:

D. Oxygen

Explanation:

Plants absorb carbon dioxide (CO2) and release oxygen for humans and animals to breathe in. Afterward, they'll release CO2 for plants to absorb, which forms a cycle.

Answer:

Oxygen

Explanation:

Both light dependent and light independent reactions in photosynthesis create glucose. But, only light dependent reactions convert carbon dioxide to oxygen.

Light independent: Carbon dioxide + water --> ATP and NADP(Energy/Glucose) and water

Light dependent: Carbon dioxide + water + light --> Glucose(ATP and NADP), water, and oxygen

I NEED HELP
What animal adaption happened before the others? a.pex

A) Reproduction on land
B) Development of a coelom
C) Tissue development
D) Deuterostome development

Answers

C) tissue development

Answer:

C tissue development

Explanation: tissue development is what happens before others

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How is sleet different from hail?

A) Hail falls to the ground as liquid water, and sleet is solid.
B) Hail falls with rain and snow, and sleet only falls with snow.
C) Sleet can happen during thunderstorms, and hail cannot.
D) Sleet pellets are smaller than hail.

Answers

Answer:

The answer is C) Sleet can happen during thunderstorms, and hail cannot. or D) Sleet pellets are smaller than hail.

Explanation:

Answer:

D

Explanation:

HELLLLLPPP PLANT STRUCTURES LAB REPORT DOES ANYONE HAVE ANSWERRS 100pts

Answers

Answer:

hey Rebecka the answer is in the photos. thank me later, also you should cut me some cucumbers  

Explanation:

Plant cells are different from the animal cells in their basic structure such as the cell wall which is absent in the animal cell, chloroplast is also found in the plant cell which is not present in animal cell.

What are Plant cells?

Plant cells have a rigid cell wall, a large central vacuole, and plastids such as chloroplasts. The cell wall is a layer which is present outside the cell membrane and surrounds the cell, it provides the structural support and protection.

The central vacuole is present in the plant cell and it maintains turgor pressure against the cell wall. The central vacuole is a large vacuole found inside of plant cells. It is a sphere which is filled with fluid and molecules inside a cell. The central vacuole stores water.

Chloroplasts are the organelles which are responsible for the process of  photosynthesis, are in many respects similar to mitochondria. Both the organelles including chloroplasts and mitochondria function to generate metabolic energy, evolved by endosymbiosis, and also contain their own genetic systems, and replicate by division.

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Your question is incomplete, most probably the complete question is:

Learn and recognize the basic structures of a plant cell.

PLEASE FILL IN THE BLANKS
1. cells are the basic units of________and_______in all living things.


2.All cells come from____-________________ __________.

Answers

Answer: 1) structure, function

Explanation: 2) all cells come from existing cells

PLSSS PLLSSS I NEEDD HELP PLSSS S SSSUNNISMKS

20 POINTS



Three chairs were rolling across a flat office floor. The blue and red chairs are the same mass, and they have more mass than the yellow chair. Each chair was hit by another chair, but not from the same direction. Use the information in the diagram to answer.

Answers

Answer:

The answer is A

Answer:

answer is A hope it helps

Analogy of Cell wall

Answers

Answer:

In school, I was taught that it is like a bouncer who controls who enters and exits the club because the cell membrane controls what is able to permeate into the cell. It’s good, but I like to think of it as a door.

1. What shellfish have segmented bodies?

Answers

crustaceans have segmented bodies

Answer:

Lobster,Shrimp and Crab have segmented bodies to protect their muscles and organs that gives them structural support.

Explanation:

No question, just answers

What is the difference between a detritivore and a decomposer?

While detritivores feed on dead organic matter, decomposers actually break down dead or decaying organisms.

What is the main difference between food chains and food webs?

Food webs are more complex than simple food chains.

Taj incorrectly states that autotrophs are also known as consumers that need to feed on other organisms, including plants and animals, to gain energy. Which of the following best describes consumers that feed on other organisms such as plants and animals for energy?

heterotrophs

Which of the following is the first trophic level in every ecosystem?

autotroph

What is the relationship between matter and energy in an ecosystem?

Matter and energy are cycled through the ecosystem.

Answers

Well let me add on

A food chain shows the feeding between different trophies levels and a food web shows feeding in an interrelated food chain.

The Tower of David is in the Old City of Jerusalem. Visitors at the tower noticed that the wind suddenly shifted direction early this afternoon.
is it weather or climate

Answers

Answer:

This atmospheric condition represents weather.

Explanation:

Weather can be defined as the atmospheric conditions of a particular area over a short period of time. Some of the elements of weather are wind, humidity, temperature, air pressure, precipitation and clouds.

Basically, the weather of a particular area or region may change hourly, daily, monthly or even annually.

In this scenario, the Tower of David is in the Old City of Jerusalem. Visitors at the tower noticed that the wind suddenly shifted direction early this afternoon. Therefore, this change in the atmospheric condition (wind) represents weather.

On the other hand, climate refers to the change in the atmospheric conditions and manifestation of weather in a particular area over a long period of time usually 30 years.

Which is a natural source of greenhouse gases?

Answers

Answer:

Examples of greenhouses gases are water vapor, carbon dioxide. methane, nitrous oxide and ozone (O3). Lightning produces ozone as does UV light at high altitudes, methane is produced biologically and in volcanoes (but doesn’t last long in the atmosphere). Carbon Dioxide is also produced biologically and in volcanoes. Water vapour is most from ocean evaporation, which is bad news if the Earth gets hotter because that leads to more Water vapour.

Explanation:

A natural source of greenhouse gases is respiration

Greenhouse gases are gases that trap heat in the atmosphere and warm the planet. The major greenhouse gases are:

Carbon dioxideMethaneWater vapor Nitrous oxide Fluorinated gases

The greenhouse gases occur from natural sources and synthetic sources

Some of the natural sources of greenhouse gases are:

Respiration Decomposition of plants.Ocean release etc.

Hence, a natural source of greenhouse gases is respiration

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A young man recently learned from a genetics doctor that he had a condition called Friedreich's ataxia. This syndrome affects the arms and the legs with the person usually needing a wheel chair. Neither of his parents have this disorder. However the young man's grandfather was wheelchair bound, but didn't know why because genetic information was very limited when his grandfather grew up.

What are the genotypes of each of the individuals mentioned in this question? Create a pedigree chart to support your answer.​

Answers

Answer:

i believe dominant genotypes

Explanation:

from memory sorry for no pedigree chart

Choose a statement that explains why competitive exclusion occurs between different species.
Limited resources are easily shared.
There are unlimited resources in the ecosystem.
Competition decreases the health of all animals.
One competitor is best at using a limited resource.

Answers

Limited resources are easily shared I believe

The statement "Limited resources are easily shared" is the one correct about the competitive exclusion between different species.

What is competitive exclusion?

It is the result of the competition in which a species is expelled by another more efficient species from a part of the available habitat.

Characteristics of the competitive exclusion

The competitive exclusion principle states that two species cannot occupy the same ecological niche in the same habitat.

If there are limited resources, eventually one species will exclude the other, given a certain period of time, through “competitive exclusion”.

Therefore, we can conclude that the competitive exclusion states that two species occupying the same niche cannot coexist in the long term since they would enter into competition for limited resources.

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why do you think places along the equator have relatively constant temperatures and daylight hours all year?

Answers

Answer:

Explanation:

The Earth's axis tilts approximately 23.5° from vertical relative to the plane of the Earth's orbit around the sun. ... The equator, however, receives relatively consistent sunlight all year. The consistency of energy means the equator's temperature stays relatively constant all year.

hello! I had one quick question I wanted to ask just to make sure I was right. the question is "How do animals obtain the energy they need? "​

Answers

Answer:

by eating or doing whatever that species needs to do

Explanation:

Why do some plants perform C4 photosynthetic pathways instead of the more common C3 pathway?

Answers

Answer:

c4 plants are better adapted to tropical climate.and C4 plants effectively obtains Co2 even when present in low concerntration.this is bc co2 has high affinity for c4 organic acids present in C 4 plants.because of presence of C4 organic acids,plants can tolerate saline and acidic soils.they are able to maintain high area Co2 fixation because of compactly arranged mesophyll cells.

Plants may withstand acidic and saline soils thanks to the presence of C4 organic acids. Because the mesophyll cells are packed closely together, they can continue to fix a large amount of CO2.

What is photosynthetic?

The process by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis.

Photosynthesis is a process used by plants and other living things to convert light energy into chemical energy that can then be released through cellular respiration to power the organism's activities.

Tropical climates are better suited to c4 plants. even in low concentrations, C4 plants can successfully absorb CO2. This is because the c4 organic acids found in C4 plants have a strong affinity for co2. Plants may withstand acidic and saline soils thanks to the presence of C4 organic acids. Because the mesophyll cells are packed closely together, they can continue to fix a large amount of CO2.

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list different causes of diseases​

Answers

Answer:

Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.

Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.

Fungi. Many skin diseases, such as ringworm and athlete's foot, are caused by fungi. Other types of fungi can infect your lungs or nervous system.

Parasites. Malaria is caused by a tiny parasite that is transmitted by a mosquito bite. Other parasites may be transmitted to humans from animal feces.

Explanation:

i write it with the explanation on when i answer it

Which characteristics do birds and mammals share? Check all that apply.


A. Both give birth to live young.

B. Both are endotherms.

C. Both have hair or fur.

D. Both produce milk to feed their young.

E. Both are vertebrates.

Answers

Answer:

B and E

Explanation:

The correct answer would be that both birds and mammals are vertebrates and are also endothermic.

Both birds and mammals belong to the same animal kingdom. They also belong to the same chordate phylum but belongs to different classes under the phylum. However, they both belong to the same sub-phylum Vertebrata - a group of chordates with the vertebral column.

Birds (aves) and mammals represent different classes of animals. Birds lay eggs that later hatch when conditions are right to give rise to their young ones. Mammals, on the other hand, give birth to their younger ones and are able to produce milk through their mammary gland to feed them. The body of mammals is characterized by the presence of hairs that help insulate the body making them to be homoiothermic, unlike birds that of birds, where hair is replaced with feathers.

However, both birds and mammals are endothermic, that is, they both maintain a fairly constant body temperature irrespective of the temperature of their environment.

The correct options are B and E.

Both are endotherms and vertebrates. Therefore option B and E is correct.

Birds and mammals share the characteristics of being endotherms and vertebrates.

Endotherms are animals capable of regulating their body temperature internally, which allows them to maintain a relatively constant body temperature even in changing environmental conditions.

Both birds and mammals are warm-blooded, which enables them to be active and maintain their metabolism efficiently.

Additionally, birds and mammals are vertebrates, meaning they possess a backbone or vertebral column. This structural feature provides support and protection for the spinal cord and allows for efficient movement.

While birds and mammals have other unique characteristics, their endothermic nature and vertebrate status are significant similarities that contribute to their adaptability and success in diverse ecosystems.

Therefore option B and E is correct.

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HELP ME

this is a K12 question


The weather is warm and dry.

Which change would a cold front bring?



rain or thunderstorms


extended period of rain or snow


dry air and sunny skies


several days of gray skies

Answers

Answer:

rain or thunderstorms

Explanation:

Answer: It brings rain or thunderstorms.

Hope this helps!

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a titanium bicycle frame displays 0.250 L of water and has a mass of 1.21kg. what is the density of the titanium on g/cm3? What is the slope of the line? please help meeeeeeeeeeesssssssssssss Which two types of theater movements do the father and son duo follow?When Christopher started directing stage plays, he preferred __________ n his play, which is why he never used fake props in any of his dramas. He also instructed his actors to completely ignore the audience while performing and act as if they really living the lives of their respective characters. Christophers son, also a play director, took his fathers style of directing to another level because he promoted __________ in his plays. He would write his plays digging deep in his characters and the motivations behind their actions. He would ensure that every minute detail is explained in the play. 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