Explanation:
in DNA nitrogen bases are adenine, thymine, guanine and cytosine and in RNA nitrogen bases are same but instead of the thymine there's uracil
in DNA there are linked together adenine and thymine ; Guanine and cytosine. And in RNA adenine and uracil; Guanine and cytosine.
HELPP !!!
If a recessive trait is beneficial to an animal, what happens to the trait's proportion in the population?
It becomes more common
It becomes less common
It doesn't change much
Answer:
It becomes more common
Explanation:
Even if the trait is recessive if it is beneficial to a population then it will become more common because those with the trait are more likely to survive. For example, if a population of beetles lives on green grass and the dominant trait is for the beetles to be black and the recessive trait is green then the green ones will survive because the black beetles will be eaten first.
Johnny is drinking a glass of orange juice when he is informed that orange juice is acidic. He begins to panic, thinking his blood will soon turn to acid. Why should he not be worried?
A. Blood contains buffering agents which resist changes in pH.
B. Acids are not absorbed by the blood.
C. The stomach environment is basic, which neutralizes acids.
D. Acids are neutralized by saliva.
Answer:
B
Explanation:
blood only absorbs end products of digested food .
Johnny should not be worried because blood contains buffering agents which resist changes in pH (Option B).
What is blood?The blood is a fluid inside the circulatory system that contain different type of cells (e.g., red blood cells).
The blood served to maintain the internal equilibrium (homeostasis) of the body.The buffers in the blood include different types of proteins, bicarbonate/carbonic acid, and phosphate acid buffers.In conclusion, Johnny should not be worried because blood contains buffering agents which resist changes in pH (Option B).
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When is the gravity exerted on Earth by the Sun and Moon system the greatest? Why do you say this?
Answer:
When the Moon is positioned between the Sun and the Earth.
Explanation:
This is because you add both the gravitational pull of the Moon, with the gravitational pull of the sun.
Where is the foramen in this diagram of a bone from the vertebral column?
A. option A
B. option B
C. option C
D. option D
Answer:
What is C. option C
Explanation:
See Diagram of vertebral column I have provided below.
Have a happy day! <3Miss Hawaii
skeletal muscle exhibits alternating light and dark bands called
Skeletal muscle exhibits alternating light and dark bands called a sarcomere
Skeletal muscle is having sarcomere having myofibrils which appear dark and light in the microscope.
What is skeletal muscle?Only thin filaments containing actin are present in isotropic bands, anisotropic bands are the darker bands (A bands).
Repeating sarcomere sections, which are visible under the microscope as alternating dark and light bands, make up myofibrils.
When a muscle contracts or relaxes, long, fibrous protein filaments called sarcomeres glide past one another. Because of this, skeletal muscle is also known as striated muscle.
Therefore in appearance due to myofibrils composed of the sarcomere look light and dark bands in the skeletal muscle under a microscope.
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What is the difference between El Nino and La Nina in science terms of climate?
Answer:
El Niño impacts weather systems around the globe, triggering predictable disruptions in temperature, rainfall and winds. La Niña is the opposite – a cooling phase of ENSO that tends to have global climate impacts opposite to those of it. El Niño refers to the above-average sea-surface temperatures that periodically develop across the east-central equatorial Pacific. It represents the warm phase of the ENSO cycle. La Niña refers to the periodic cooling of sea-surface temperatures across the east-central equatorial Pacific.
Hope this helps
Answer:
Well, El Niño(warmer environment) impacts weather systems around the world, while La Nina(cold environment) tends to have global climate affects opposite to El Nino.
what is the main artery that carries blood to your brain
Pls help!
Explain how Community 1 and Community 2 compare with regards to species richness
(number of species)?
Explain how Community 1 and Community 2 compare with regards to species evenness
(proportion of each species)?
I need to see whole picture to help
The importance of PATTERNS (base order) over the two steps of protein synthesis:
TRANSCRIPTION: The sequence ( specific order) of bases in _________determines the sequence (specific order) in the _______.
TRANSLATION: The sequence (specific order) of the bases in the ________ determines the sequence of the _________that make-up the _________.
Answer:
fdfdfdfdfdfdfdfdfdfdffd
help me pls........
Take a look at the phylogenetic tree. Which two organisms on the tree would be expected to share the most characteristics?
O cnidarians and animals with bilateral symmetry
Ochoanoflagellates and cnidarians
O sac fungi and cnidarians
O amoebas and sponges
Answer:
first option and third option
Explanation:
pls give brainliest have a great day
Question 1 (1 point)
Which of the following is NOT something that can cause your core temperature to change?
Question 1 options:
Fevers caused by disease
Enzymes denaturing in your cells
When the external temperature gets really hot or cold
Energy produced by your muscles when you exercise
Question 2 (1 point)
Why is it so important to maintain a core temperature of 37°C?
Question 2 options:
Your core temperature doesn't stay at 37°C, it will actually change and reflect the temperature outside.
Your body can only make cells at 37°C, and we need cells because that is what our body is made of.
It is just best to keep that temperature so you don't shiver or sweat.
The enzymes in our cells work best at this temperature and these enzymes are needed to carry out all the reactions that happen in our body to keep us alive.
Question 3 (1 point)
What happens to your enzymes when they get too hot?
Question 3 options:
The enzymes denature and the active site alters, so the substrate can't fit in there properly and chemical reactions don't happen as fast.
The enzyme changes shape, but the substrate still fits in and the chemical reaction can still take place.
The enzyme dissolves and the pieces then need to be rebuilt before they can be used again.
Nothing, the enzyme can handle temperature changes in the body.
Question 4 (1 point)
Which organ is super important in helping you in both conserving heat and cooling your off?
Question 4 options:
Skeletal System
Excretory System
Respiratory System
Integumentary (Skin) System
Question 5 (1 point)
The __________ is the temperature-regulating center of the brain and can detect temperature changes to the blood as it flows through the brain.
Question 5 options:
Skin
Hypothalamus
Nervous system
Thymus
Question 6 (1 point)
Which of the following best describes how your muscular and skin systems work to warm you up if you get too cold?
Question 6 options:
Your muscles begin to contract fast and this movement helps you warm up
Small erector muscles work to raise the hairs on your skin. This helps trap the air close to the skin, goose bumps appear and the air acts as an insulator
blood vessels narrow keeping the blood away from the skin to keep you warm
Sweat glands release sweat to ensure you stay the proper temperature
Question 7 (1 point)
Which of the following best describes how your circulatory and skin systems work together to cool you off when you get too hot?
Question 7 options:
Your blood vessels (capillaries) dilate allowing blood to flow near the surface of your skin. This allows the heat to be released through your skin to help you cool off.
You begin to sweat which leaves salt on your skin after the sweat evaporates.
The hairs on your skin will lie flat to allow better evaporation of sweat and to allow the heat to be released into the air
Goose bumps show up to help your muscles contract to help cool you off
Question 8 (1 point)
If your core temperature falls too low, it is called __________________
Question 8 options:
hyperthermia
thermoregulation
hypothermia
dehydration
Question 9 (1 point)
Extreme tiredness and lethargy (slow, not moving much) are the first signs of someone experiencing hypothermia?
Question 9 options:
True
False
Question 10 (1 point)
When people exercise in hot weather, which of the following could happen?
Question 10 options:
People can acclimate to the hotter conditions over time producing more sweat that has lower salt levels
Homeostasis, this could cause their blood sugar levels to rise
Excessive sweating can lead to dehydration and heat stroke. Drinking lots of water can help prevent this situation from happening
Both A and C
1pregunta= 3
2pregunta=2
3pregunta=3
4pregunta= 3
5pregunta= 2
1. Enzymes denaturing in your cells cannot change the core temperature.
2. The enzymes in our cells work best when the core temperature is at 37°C .
3. When the enzymes get cold they denature and the active site alters.
4. Integumentary (Skin) System helps in both conserving heat and cooling off.
5. The Hypothalamus is the temperature-regulating center of the brain.
6. Small erector muscles work to raise the hairs which helps in warm up.
8. If your core temperature falls too low, it is called Hypothermia.
9. Extreme tiredness and lethargy are the first signs of someone experiencing hypothermia is True.
Enzymes are biological molecules, specifically proteins, that act as catalysts in various chemical reactions within living organisms.
1. Enzymes denaturing in your cells
2. The enzymes in our cells work best at this temperature and these enzymes are needed to carry out all the reactions that happen in our body to keep us alive.
3. The enzymes denature and the active site alters, so the substrate can't fit in there properly and chemical reactions don't happen as fast.
4. Integumentary (Skin) System
5. Hypothalamus
6. Small erector muscles work to raise the hairs on your skin. This helps trap the air close to the skin, goose bumps appear and the air acts as an insulator
7. Your blood vessels (capillaries) dilate allowing blood to flow near the surface of your skin. This allows the heat to be released through your skin to help you cool off.
8. Hypothermia
9. False
10. Both A and C
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which muscle cells have desmosomes and gap junctions
Answer:
Cardiac muscle cells are rectangular-shaped cells connected by regions called intercalated discs. Intercalated discs contain gap junctions and desmosomes.
Explanation:
The muscle cells that have desmosomes and gap junctions are cardiac and smooth muscle cells. The correct option is C.
What is a cardiac cell?Cardiac cells are the chain of myofibrils and look like a chain of rods. It is of red color. Cardiac muscle cell has three types of gap junction. The two types are sheet desmosomes and spot desmosomes.
The options are attached below.
Thus, the correct option is C. cardiac and smooth muscle cells.
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what four pathways are involved in the breakdown of glucose to carbon dioxide and water?
the acromial end of the clavicle articulates with the
Answer:
acromion of the scapula
The acromial end of the clavicle articulates with the acromion of the scapula at the acromioclavicular joint. This end is also anchored to the coracoid process of the scapula by the coracoclavicular ligament, which provides indirect support for the acromioclavicular joint.
Explanation:
what do the roman numerals in the pedigree diagram represent?
Answer:
I think it is supposed to be generation so 1st and 2nd generation in this case.
Explanation:
Answer:
Roman Numeral stands for the generation in the family
Explanation:
https://www.cs.cmu.edu/~genetics/units/instructions/instructions-PBA.pdf
Pedigree Analysis
Ở một loài thực vật: A- thân cao trội hoàn toàn so với a - thân thấp; B - quả đỏ trội hoàn toàn so với b - quả trắng.
hãy viết sơ đồ lai xác định tỉ lệ kiểu gen, kiểu hình ở các phép lai sau:
P: AaBb x aabb
Mọi người giúp em với
Answer:
Có 4 kiểu tổ hợp giao tử có thể có của bố mẹ AaBb.
Một nửa số giao tử có alen trội A và alen trội B; một nửa số giao tử còn lại mang alen lặn a và a lặn b.
Cả bố và mẹ đều tạo ra 25% mỗi loại AB, Ab, aB và ab.
Explanation:
the rhomboideus minor muscle originates on which process on the vertebrae?
Answer:
The spinous process
Explanation:
The rhomboideus minor muscle is a part of the posterior group of the pectoral girdle, which is included in the spinous process.
How do meiosis I and II contribute to genetic variation?
What determines whether a metamorphic rock is foliated or nonfoliated?
it's 3 i think. bbjghjhgsjsishgdjdj
in a eukaryotic cell, where is most of the dna located?
an organism that captures and consumes another organisms for nourishment is called an?
Answer:
The organism is called a predator and the organism captured, a prey.
Answer:
predation I think
Explanation:
zvi, agzqizkwboxgowvxkvoevoxbke x
I need all the blanks this is gonna take time so I will give a lot of points
Answer:
hope the pictures help
Explanation:
hope these are right and help you to understand :). An easy way to remember these are by Apple Tree and Car Garage for DNA replication where A always pairs with T and C always pairs with G. for RNA is Apple Under and Car Garage where A always pairs with U and C with G.
what will be the result if a eukaryotic cell completes mitosis but does not undergo cytokinesis?
A cell that completed mitosis but does not undergo cytokinesis PRODUCES one cell with two nuclei, each identical to the nucleus of the parent cell. Cytokinesis is the last phase of cell division.
Cytokinesis is the process by which a parental cell divides its cytoplasm to produce two genetically identical daughter cells, each one containing one cell nucleus.
Cytokinesis occurs in both types of cell division, i.e., mitosis and meiosis.
In animal cells, cytokinesis occurs by the emergence of a contractile ring that appears just beneath the cell membrane.
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state three items that are absorbed by the plant system ?
where do materials pass in the cell
outline three process absorption help to improve
give a real life scenario of how diffusion occur
what type of molecules do we deal with in osmosis
A bat is a mammal even though it flies in air. Why?
Answer
Bats are true mammals in that they give birth to live young, produce milk to feed their young, have hair, and they are warm-blooded (they can self-regulate their body temperature). ... Bats use their wings to fly, and they often use them to catch their prey, mostly flying insects.
Answer:
Flying Mammals
Explanation:
Bats are true mammals in that they give birth to live young, produce milk to feed their young, have hair, and they are warm-blooded (they can self-regulate their body temperature). Bats are unique among mammals in that they can fly. Even though they can fly, they have mammal characteristics.
what is the function of allolactose in regulation of the lac operon?
Answer:
Inducer
Explanation:
Allolactose binds to the lac repressor and makes it change shape so it can no longer bind DNA. Allolactose is an example of an inducer, a small molecule that triggers expression of a gene or operon.
Answer:
Allolactose binds to the lac repressor and makes it change shape so it can no longer bind DNA. Allolactose is an example of an inducer, a small molecule that triggers expression of a gene or operon.
A map of eastern North America, showing the pH of rainfall in the various states, indicates that the pH of rain in New York State varies from 4.22 to 4.40. According to these figures, the most acidic rainfall in New York has a pH of
Answer:
4.22
Explanation:
The lower the number, the more acidic.
The four main groups of macromolecules are carbohydrates, lipids, proteins. Identify each type of macromolecule based on its monomer.
Answer:
1) GLUCOSE is the monomer for CARBOHYDRATES
2) FATTY ACID & GLYCEROL is the monomer for LIPIDS
3) NUCLEOTIDE is the monomer for NUCLEIC ACIDS
4) AMINO ACID is the monomer for PROTEINS
image thanks to OpenStax
Which of the following best represents the goals of the 1963 March on Washington organizers?
A.) To tell Congress they are doing great.
B.) To unify Americans to gather in non-violent protest to bring about real, actionable change
C.) To get the president on their side
D.) To support separate education
Answer:
D.) To support separate education
Explanation:
Answer:
B
To unify Americans to gather in non-violent protest to bring about real, actionable change
Explanation:
Originally conceived as a mass demonstration to spotlight economic inequalities and press for a new federal jobs program and a higher minimum wage, the goals of the march expanded to include calls for congressional passage of the Civil Rights Act, full integration of public schools, and enactment of a bill prohibiting ...
what is the major energy carrier molecule in most cells
Answer:
mitochondria
Explanation: