Biology High School

Which of the following best describes a mutation?

a change in a gene

a section of a chromosome that codes for a trait

anything that can damage a gene

a distinguishing quality that can be passed from one generation to another

Answers

Answer 1
a mutation is a change in a gene

Related Questions

What two types of cells are involved in immune response and have the job of creating a "memory" of exposed pathogens? *
a)A cells and B cells
b)T cells and A cells
c)T cells and B cells
d)red and white blood cells

Answers

Answer:

B  

Explanation:

please help me i don’t know nun of this

Answers

Answer:

A and A

Explanation:

Answer:

idek

Explanation:

I just don't know what each one is

Stimulus: Ca2+ ion levels in blood are too low
•Sensor: •Control center:
•Effector and action(s):
•Negative feedback:


•Stimulus: Ca2+ ion levels in blood are too high
•Sensor:
•Control center:
•Effector and action(s):
•Negative feedback:

Answers

A. Beacuse effector and actions and sensor control center= stimulus so m=347839.6

Does the Second Amendment need to be "revisited" in 2021? yes and why?

I need help pleasee

Answers

Answer:

It needs to be revisited because of the random acts of violence that it enables.

Explanation:

People that have access to weapons of mass destruction use them to kill people for no reason. For example, the sandy hook shooting, the recent Stoneman Douglas shooting, and the Christchurch shooting. All these shootings could have been prevented if there was stronger gun control. If people did not have access to automatic firing machine guns, less people would have died.

* DISCLAIMER *

All ideas expressed in this answer do not necessarily reflect my person views, they are meant for educational purposes, not to spark a debate about the 2nd amendment, do not get offended. (put this in cus some peeps crazy)

9 Luis wants to interview someone who has a career in biotechnology. Which of
the following best describes a career in biotechnology?
F Athena uses a sophisticated telescope to observe stars.
G Zach tracks the number of fish that inhabit a certain coastal area.
H Vincent modifies the DNA of bacteria to study the function of their genes.
I Lindsey writes computer programs that model the three-dimensional
structure of chemical compounds.

Answers

Bio refers to study of living things + technology (is pretty straightforward- i dont think i need to explain this)

This means Vincent modifies the DNA of bacteria to study the function of their genes is the correct answer :)

which one ?
A.
B.
C.
D.

Answers

Answer:

D

Explanation:

Answer and Explanation:

D should be the right answer. Let me know if I'm wrong..

Is this correct guys?

Answers

Yes it’s correct, study hard

Answer:

Yes its correct.

:)))))

Touch the stigma and notice how it feels. What is the advantage of this type of texture?
A. The sticky texture allows for capture of prey to help with fertilization
B. The sticky texture allows for the exchange of carbon dioxide to assist with photosynthesis.
C. The sticky texture allows for pollen to adhere to the stigma for fertilization.
D. The sticky texture allows for water molecules to not escape from the plant, thus preventing dehydration.​

Answers

A-Most stigmas are covered with a waxy, sticky substance. This wet substance allows stigmas to provide an important service by re-hydrating dry pollen to prepare the grains to enter the ovary and initiate the process of fertilization.

help please!!! asap!!

Answers

Answer:

Water

Explanation:

PLZ HELP!!!!!
. Flattened, hollow folds and sacs of endoplasmic reticulum are called cisternae.
a. TRUE
b. FALSE

Answers

The answer is A . True because the ER is a network membranes that from hollow tubes flattened sheets , and round sacs . These flattens , hollow folds and sacs are called cisternae.

Answer:

true

hope this helps

have a good day :)

Explanation:

draw a line from each hormone in list A to the correct information in list B

Answers

Answer:

The correct answer would be -

FSH - used as fertility drugs to makes egg mature.

LS - stimulates the release of eggs.

Oestrogen - causes the lining of the womb to break down.

Explanation:

FSH is a hormone released from the pituitary gland and is the abbreviation of Follicle-stimulating hormone which controls the menstrual cycle and growth of eggs in ovaries. It is also used as a fertility drug that promotes the growth of eggs to mature it.

LS or Luteinising hormone is the hormone that is released from the pituitary gland and promotes the surge of the release of eggs.

Oestrogen is the hormone that helps females during puberty during the menstrual cycle to breakdown the lining of the womb.

Investigators are looking for the igniter used at their crime scene. Which igniter is most likely to leave evidence behind for investigators to discover?

A cigarette lighter
A cigarette butt
A match
A Molotov cocktail

Answers

A cigarette lighter considering the suspect touched it and left fingerprints
A cigarette lighter because it would most likely cause fire out of all the other options listed

a student mixed a sample of urine from a person with benedict's solution and heated ,the colour changed to Orange. (b)what did the student conclude on the health status of the person​

Answers

Answer:

The person has high blood sugar.

Explanation:

Because benedict's solution tests for reducing agents, and since it changed its colour, reducing sugars(like glucose) is present.

difference between plants and animal cell​

Answers

Answer:

Plant cells have a cell wall, but animals cells do not. Cell walls provide support and give shape to plants. Plant cells have chloroplasts, but animal cells do not.

Explanation:

Hope this helps

sorry if incorrect

Brainliest?

Answer:

Plant cells have chloroplasts,animal cells don't.

Plant cells also have cell walls.

Animal cells have lysosomes and centrosomes and plant cells don't.

please answer all the three questions​

Answers

Answer:

1. Birds have feathers of different colours.

2. Woodpeckers have long beaks.

3. Sunbird is a non-migratory bird.

or

3. Sunbird is sedentary bird.

Explanation:

hope this helps and is right :)

p.s. i really need brainliest.

Which element is found in both DNA and protein?
Sulfur
Sodium
Nitrogen
Chlorine

Answers

Answer:

nitrogen

Explanation:

Answer:

Nitrogen

Explanation:

Hello There!

DNA and protein is made up of nitrogenous bases which contain nitrogen therefore the correct answer would be nitrogen

Please define the terms, don’t copy and paste. I’m giving 15 points for it

Answers

Algae: any of numerous groups of chlorophyll-containing, mainly aquatic eukaryotic organisms ranging from microscopic single-celled forms to multicellular forms 100 feet (30 meters) or more long, distinguished from plants by the absence of true roots, stems, and leaves and by a lack of nonreproductive cells in the reproductive structures: classified into the six phyla Euglenophyta, Crysophyta, Pyrrophyta, Chlorophyta, Phaeophyta, and Rhodophyta.

Amboeda: any of a large genus (Amoeba) of naked rhizopod protozoans with lobed and never anastomosing pseudopodia, without permanent organelles or supporting structures, and of wide distribution in fresh and salt water and moist terrestrial environments

Asexual reproduction: reproduction (as cell division, spore formation, fission, or budding) without union of individuals or gametes

Cilia: minute short hairlike process often forming part of a fringe

Diatom: any of a class (Bacillariophyceae) of minute planktonic unicellular or colonial algae with silicified skeletons that form diatomaceous earth

Please mark brainliest

How do the diaphragm and rib muscles help with breathing? These muscles
pull lungs down to draw in air
change the air pressure
open up the air flow tubes
keep food out of the chest
push blood around the lungs

Answers

When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale


Question 4 (1 point)
Low-mass main sequence stars often exceed the Chandrasekhar Limit
O True
O False

Answers

I am going to take a guess based off of my earth science knowledge and say it is false. Sorry if I'm wrong.

Which of the following are reasons Earth's atmosphere makes conditions suitable for life? (multiple answers)



stops earthquakes


protects us from harmful radiation


traps heat


provides oxygen for breathing

Answers

Answer:

B and C I think

Explanation:

Those ones make the most sense in my opinion.

What theories of intelligence relies on the sensitivity to other people’s feelings and the ability to respond to them?

A. Emotional Intelligence by Daniel Goleman and Gardner's Theory of Multiple Intelligences

B. Emotional Intelligence by Daniel Goleman

C. Gardner's Theory of Multiple Intelligences

D. Neither

Answers

Answer:

D

Explanation:

Is the following cell a plant of an animal cell? How do you know? Plant cell because there is a cell wall and a chloroplast O Plant cell because there is a large vacuole and a cell wall 0 Animal cell because there is a cell membrane and no chloroplasts O Animal cell because it has a cell wall and a a large vacuole​

Answers

Answer:

A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane.

Explanation:

Would DNA fingerprinting be useful in solving crimes if there was no such thing as nonsense codes/junk DNA?

Answers

Yes it would be useful because it can still be run through the database and something Can still be found linked to the person .

Why is it possible that two ecosystems with identical conditions of temperature and precipitation, could support different plants?

Answers

Answer:

Because even if they are similar, they still have a difference between them, and that difference helps other plants.

It is possible because plants require other factors like sunlight and soil nutrients) other than Temperature and precipitation to grow

Plants require some Important factors for its growth and development and they are :

Temperature precipitation Sunlight soil nutrients type of soil

The two ecosystems with identical conditions of Temperature and precipitation might have differences in the amount of sunlight they receive and the Nutrients contained in its soil. therefore the ecosystems although similar can support different plants based on the difference in the amount of sunlight and Nutrients contained in the soil.

Learn more : https://brainly.com/question/22856681

adsorption definition

Answers

Answer:

The definition of Adsorption is the process by which a solid holds molecules of a gas or liquid or solute as a thin film

Explanation:

A typical virus is made up of 2 parts. Check all that apply.
A) Golgi Body
B) Nuclear envelope
C) Nucleic Acid
D) Capsid

Answers

Answer:

C) Nucleic Acid

D) Capsid

Explanation:

A virus is structure that is dependent on a living host to replicate itself. Viruses are majorly pathogenic in nature and have a structure that is made up of two parts namely: nucleic acid and capsid.

The nucleic acid, which can either be RNA or DNA holds the genetic information of the virus while the capsid is a protein coat that enclosed and protects the virus' genetic material. The capsid is also used during the infection life cycle of a virus where it helps the virus to attach to receptor cells on the host's cell membrane.

which 3 statements of these are true? ( I put a picture attached to this ) please help I will give brainliest if correct

Answers

Answer:

The name of the element is carbon, there are 6 protons, and nitrogen has a smaller atomic number.

Explanation:

The atomic number of carbon is 6, not 12.

The atomic mass of carbon is 12.01g, not 12.

It does have six protons, it has a larger atomic number (6) than nitrogen (5) and it is called carbon.

Classify each planet as an inner planet or an outer planet.

Answers

planet A- outer
planet B- outer
planet C- inner
planet D- inner
planet E- inner
planet F- outer.

hope this helps :)

What is the effect of inputting stem cells instead of body cells into the original system?

Answers

Explanation:

Stem cell research indicates that s.cells are cells that are not fully developed; in turn if researchers inject a patient with type 1 diabetes into the pancreas the result is that the pancreas produces it's own insulin eliminating the chances of spikes in the blood sugars of the patient & also long term effects of high blood sugars that effect all vital organs & nervous system.

Researchers were also using stem cells to limbs that were amputated or damaged resulting in the limb regenerating itself.

I have seen a mouse that had a human ear attached to its body.

Researchers were ordered by our government to cease the experiments because pharmaceutical companies were making more $$ on medicines to supposedly help diabetics or veterans to live a normal life..

Mitochondria are cell structures that contain a small quantity of DNA.
Scientists are sequencing the DNA of one particular gene in mitochondria to
help identify different species of many animals including myriapods. The
sequences that they find are called ‘barcodes’.
(i) State the part of the cell that contains most of the DNA.
[1]
(ii) Suggest how DNA barcoding might be useful in the classification of animals,
such as myriapods.

Answers

The part of the cell that contains most of the DNA is the mitochondria.
The use of the DNA barcoding is that by comparison with a reference library such as DNA sections an individual sequence can be used to uniquely identify an organism to a species just like how a supermarket scanner uses the black stripes of the UPC barcode to identify an item
Other Questions
Give an example of central heating and of local heating. Which of the following campaigns/battles led to the Ally defeat of the AxisPowers? George deposited $2,000 in his bank account, which offers 5 percent compound interestcalculated annually. What would be the principal amount available in George's account atthe end of two years?There would be a principal amount of $of 2 years.in George's account at the endO 2.1000 2.00002.005O 2.205 Which one of the following taxes goes toward 80 percent bid the money given to the federal government 30 [tex]30\geq 5[/tex] Match the conjugations with their correct reflexive pronoun/sentence.*One will not be used. cuanto es 3/4 5/6 WILL GIVE BRAIN DONT ANSWER IF YOU DONT KNOW PLEASE I NEED HELPUse operations of decimal, fraction, and percent numbers to model the following scenarios. In your final answer, include only an equation or proportion modeling the scenario. Do not solve the problems.A family dines in a popular franchise restaurant. At the end of the meal, they decide to leave their server a monetary tip that is equal to 20% of the total bill amount, $60.50. How much will the family leave their server as a tip?A family dines in a popular franchise restaurant. They plan to use a coupon that will give them a discount of 15% off of their total dinner bill, not including applicable sales tax or their servers tip. If the familys dinner bill totaled $34.00 before tax and tip, how much money will they save by using the coupon?A family dines in a popular franchise restaurant. They plan to use a coupon that will give them a discount of 10% off of their total dinner bill, not including applicable sales tax or their servers tip. The bill totals $157.30 before tax and tip. What is the new total after the server applies the 10% off coupon?A family of eight dines in a popular franchise restaurant. The restaurant has a policy of automatically including a standard tip to the final bill for parties larger than six people. The bill for the meal included a total of $58.25 in food and beverage sales, plus a standard tip of $10.49. What percent of the food and beverage sales does the restaurant consider to be a standard tip for parties larger than six?A family dines in a popular franchise restaurant that has a policy of automatically including a 20% tip on all food and beverage sales before coupon discounts are applied. What is the familys total bill amount if their food and beverages totaled $94.20 and they used a 15% off coupon? (HINT: Create more than one model.) What should the title of these two poems be? The best one will get brainliest :)Please be creative and don't answer if you're doing it for points, or I will report.1) Cherry blossoms bloomFrom the month of March to JuneA gift from Japan2) There once was a man named LarryHis legs were really quite hairyHe fell on some tapeAnd tried to escapeAnd now his legs are quite scary I have an assignment where I have to write a situation where two people are arguing about something, and two different scenarios: one where its an immature, bad argument that ends badly, and another where theyre mature about it. Im sick right now and really cant think of anythinggg. Ill give brainliest. Ty The graph of quadratic parent function f was transformed to create the graph of g(x) = f(x + 2) - 5. Which graph best represents g? A ray of light is passing through a medium making an angle of 45. If therefractive index of the medium is 1.4, calculate the angle of refraction. [Ans: 30) 3a^2-7a+6= ( for a= -2 ) Imagine that you have been asked to tackle a current national or global issue. What would that issue be?(Imperialism) Jacob did the following calculations, please explain the error if any. (2-3i)2 = (2-3i)(2-3i) = 4-6i-6i+9i2 = 9i2-12i+4 What holds more salt warm or cold water? According to Banquo, the King "Sent forth great largess to your offices." Whatgift does King Duncan bring for Lady Macbeth? what is the value of the 6 in 547.675 Steven is a college athlete. He is 21 years old and is studying to become a physical education teacher. He reads many research articles on ways to enhance athletic performance. Steven would like to look at his carbohydrate consumption to see if making changes will allow him to have a more competitive edge. Steven has decided to write down his daily food intake using a journal to address the different types of carbohydrates he is consuming. He also wants to make sure that he is getting enough carbohydrates in his diet. Steven has been consuming a very low-carbohydrate, high-protein diet for months but has been noticing some issues with concentration and feels that he is fatiguing sooner than he should when competing. 1. As he reads about carbohydrates, Steven is surprised to learn what? A. Red blood cells need both carbohydrates and fats to function. B. Fiber is absorbed into our blood stream. C. The brain and nerve tissues prefer carbohydrates as fuel. D. Even refined carbohydrates provide a rich nutrient source of energy. E. Gram for gram, carbohydrates are higher in calories than dietary fats. 2. Steven is thinking about increasing his intake of carbohydrates each day. He found through his research that inadequate levels of carbohydrates in the diet:_____. A. promote increased insulin production and insulin resistance.B. will result in weaker and smaller muscle fibers.C. require red blood cells to burn fats for energy.D. can lead to ketosis, a potentially life-threatening condition.E. trigger automatic glycogen production in muscle cells.3. Steven shares the information about inadequate carbohydrate intake with his fellow teammates, as well as the DRI recommended amounts. What is the minimum amount of digestible carbohydrate, as determined by the DRI committee, to adequately feed the brain and reduce ketosis? A. 130 g/day for an average-sized person.B. 180 mg/day for an average-sized person.C. 130 mg/day for an average-sized person.D. 180 g/day for an average-sized person.E. 150 mg/day for an average-sized person.4. Steven's preference is that most of his carbohydrate intake comes from sources low on the glycemic index scale. What types of foods should Steven consider to include in his diet that will not spike blood glucose levels? A. potatoes, apples, couscous.B. soy milk, corn, rice crackers.C. breads, rice, watermelon.D. breakfast cereals, pasta, pineapple.E. carrots, legumes, peaches.5. Steven has obviously read up on how the body uses glucose through his coursework. He understands that when glucose levels are high, the pancreas releases ; when glucose levels are low, the pancreas releases:____.a. ketone bodies; insulin.b. epinephrine; glycogen.c. ketone bodies; glucagon.d. Insulin; glucagon.e. insulin; epinephrine.6. Steven suggests that he and his teammates commit to consuming good sources of carbohydrates. Why are whole grains, unprocessed vegetables, and fresh fruits considered the best sources of carbohydrates? A. They inhibit glycogen storage in the liver, muscles, and bones, thereby maximizing glycemic load. B. They tend to be higher in calories and offer more energy as compared to processed carbohydrates. C. They have less fiber and are, therefore, more easily processed by the body than refined foods. D. They have a higher glycemic index and, therefore, help regulate blood sugar more efficiently. E. They are rich in fibers and phytochemicals and generally low in saturated and trans fats. 7. Steven decides to go shopping at a farmer's market and stops at a booth with several loaves of freshly made whole-grain bread. Which health effects have been shown to be correlated with eating whole grains on a regular basis? A. reduced risks of obesity, liver disease, type 1 diabetes, and osteoarthritis.B. reduced risks of obesity, heart disease, type 2 diabetes, and colon cancer.C. reduced risks of obesity, heart disease, type 2 diabetes, and osteoarthritis.D. increased muscle mass and body tissue health, and reduced risk of prostate and stomach cancer.E. increased muscle mass and body tissue health, and reduced risk of type 1 and type 2 diabetes.8. As Steven plans his menu for the next week, he considers the optimal percentages of each food group. According to government recommendations, what percentage of calories should be obtained from carbohydrates? a. between 15% and 25%.b. between 45% and 65%.c. between 10% and 15%.d. between 35% and 55%.e. between 25% and 35%. The solution of 2x-4=20 is