Explanation:
Carrier proteins are proteins that carry substances from one side of a biological membrane to the other.
During exercise, our body loses a lot of water. Why do people who exercise need to drink water before feeling thirsty?
Life lesson: Even when you get thirsty, contain yourself and most importantly don't fall for traps. You're better than that. Stay hydrated!
Where does the energy come from to power passive and active transport?
Answer:
To move substances against a concentration or an electrochemical gradient, the cell must use energy. This energy is harvested from ATP that is generated through cellular metabolism. Active transport mechanisms, collectively called pumps or carrier proteins, work against electrochemical gradients.
Explanation:
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A student uses gummy worms to model the process of mitosis. The model is shown below.
Using the model, which statement correctly explains how mitosis preserves genetic continuity?
A
The daughter cells receive chromosomes that are recombined from the parent cells.
B
The daughter cells receive chromosomes that are identical to the parent cell.
С
Each daughter cell receives half of its chromosomes from each of the parent cells.
D
Each daughter cell receives twice as many chromosomes as the parent cell.
Each developing daughter cell obtains one set of chromosomes when mitosis comes to a finish. Thus, option C is correct.
What is genetic continuity of Mitosis?
According to the definition of mitosis, a cell divides into two so that each has the same amount of DNA as the original cell by dividing its nucleus and DNA.
When a single cell divides into two cells through mitosis, genetic continuity occurs.
One cell divides into two during the process of mitosis, and each of the two progeny cells has the same amount of DNA as the parent cell.
As the cell divides through the cytokinesis process, the nuclear membranes come back. Mitosis maintains genomic stability throughout successive generations of cells in this manner.
Therefore, Each daughter cell receives half of its chromosomes from each of the parent cells
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These types of consumer relationships can affect the size of prey and plant populations in a community and determine the places these prey and plant species live. For example, certain plants only grow in steep hillside in a habitat because they are eaten near the stream in the valley, or deer live in the forest to better hide from wolves in the open fields.
a. Parasitism and Commensalism
b. Mutualism and Herbivory
c. Predation and Parasitism
d. Predation and Herbivory
the information in dna is contained in __________.
Answer:
the cell nucleus
homologous chromosomes separate from each other during
Answer:
In anaphase I of meiosis I the homologous chromosomes are pulled apart from each other.
Explanation:
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7. A hen's egg with the shell dissolved is placed in a 10% salt solution. Relative
to the interior of the egg the salt solution is
A. Hypotonic
B. Isotonic
C. Hypertonic
D. Semi-permeable
The salt solution is Hypertonic.
Hypertonic fluids contain a higher concentration of solute compared to plasma and interstitial fluid.What is hypertonic solution?A solution that contains more dissolved particles than is found in normal cells and blood.Cells placed in hypertonic solution will shrink. Water moves from a high water concentration inside the cell to a low water concentration outside of the cell by osmosis.What is osmosis?Osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell's partially permeable membrane.Osmosis is a passive transport process during which water moves from areas where solutes are less concentrated to areas where they are more concentrated.To know more about osmosis here
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what is biology term for something covered with ribosomes and modifies protiens
Answer:
The endoplasmic reticulum can either be smooth or rough, and, its function is to produce proteins in order for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.
Explanation:
How might the Earth's surface change because a volcano erupts?
Which one is the most venomous snake in the world
[tex]\huge\color{pink}\boxed{\colorbox{Black}{彡Answer彡}}[/tex]
Inland Taipan
Outline the four stages of the demographic transition as it occurred in Europe and North America.
Answer:
Stage 1—High birth and death rates lead to slow population growth.
Stage 2—The death rate falls but the birth rate remains high, leading to faster population growth.
Stage 3—The birth rate starts to fall, so population growth starts to slow.
Stage 4—The birth rate reaches the same low level as the death rate, so population growth slows to zero.
Explanation:
Where does cellular respiration occur? (1 point)
O chlorophyll
O mitochondria
O bacteria
O lungs
Answer: mitochondria
Explanation:
Which process must occur for a muscle to be able to relax?
ОА
The amount of ATP in the neuromuscular junction must increase.
ОВ.
Myosin and actin must attach to each other.
OC. A nerve must initiate an action potential in the muscle fiber.
OD
The concentration of calcium in the myofibril must decrease.
Reset
Next
Answer:
the concentration of calcium in the myofibril should decrease
Explanation:
the biceps brachii–radius arrangement represents a __________-class lever system.
Answer:
third
Explanation:
What is the molecule in this image?
Nucleic acid
A protein
A lipid
A carbohydrate
Answer:
a protein
Explanation:
amino acids are the monomers of proteins
List two characteristics of Coelenterata and Nematoda each.
Answer:
What are the two characteristics of Coelenterata?
Characteristics. All coelenterates are aquatic, mostly marine. The bodyform is radially symmetrical, diploblastic and does not have a coelom. The body has a single opening, the hypostome, surrounded by sensory tentacles equipped with either nematocysts or colloblasts to capture mostly planktonic prey.
What are the two characteristics of Nematoda?
Their body is bilaterally symmetrical and triploblastic. They are cylindrical in shape. They exhibit tissue level organization. Their body has a cavity or pseudocoelom.
Explanation:
If a hom.ozygous white horse [tex]C^WC^W[/tex] and a hom.ozygous black horse [tex]C^BC^B[/tex] are bred together, what is the likelihood that their offspring will be roan with both colors represented in their hair if this gene follows a codominant inheritance pattern?
A.) 50%
B.) 25%
C.) 100%
D.) 0%
Answer:
c
Explanation:
looked at the answer when i finished the test and got it wrong lol
The roan coat color in horses is also an example of codominance. A “red” roan results from the mating of a chestnut parent and a white parent. Therefore, option (C) 100% is correct.
What is co-dominant inheritance?In the genetic phenomenon known as codominance, both alleles of a gene pair found in a heterozygote are allowed to fully express themselves. Because of this, the phenotype of the offspring is a combination of the phenotypes of both the mother and the father. As a result, the trait does not exhibit dominant or recessive characteristics.
The blue roan horse has hair that is both white and gray, whereas the red roan horse's hair is both white and a reddish-brown color. The hairs of the offspring take on the coloration of both of its parents' coats. This is a situation of co-dominance.
Therefore, the resulting heterozygous progeny will have a 100% codominant inheritance pattern.
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model of a cell cycle
The cell cycle, or cell-division cycle, is the series of events that take place in a cell that cause it to divide into two daughter cells.
this is your answer
Explain how the model of the chemical reaction above demonstrates that matter is conserved.
Answer:
Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions
If 2x 2 + 13x – 7 = 0, then x could equal to which of the following?
Answer:3/13
Explanation:
Answer:
x = 1/2 and x = -7
Explanation:
you need to factor
multiply 2 x -7 to get -14
then find factors of -14 that add to give you 13
14 and -1 work
now rewrite the original equation but replace 13x with 14x - 1x
so 2x^2 + 14x - 1x -7 = 0
now factor by grouping
(2x^2 + 14x) (-1x - 7) = 0
factor the greatest common factor out of each group
2x(x + 7) -1(x + 7) = 0
the factors are (2x - 1) (x + 7) = 0
set each factor equal to zero and solve both for x
2x - 1 = 0 x + 7 = 0
+1 +1 - 7 - 7
2x = 1 x = -7
÷2 ÷2
x = 1/2
the nucleic acid sequence in mrna is determined by:
Answer:
attarction between a codon
Explanation:
Think of another common object around your house or school that you could use to model a cell. Describe the object. Based on its characteristics, does the object best model an animal cell, a plant cell, or a bacteria cell? Why?
Answer:
Out of all the objects I found I think a car represents a cell the best.
Explanation:
The structure a cars body provides makes it comparable to a cell wall and the car's metal body is also represents a cell wall because it maintains its shape even when it travels at high speeds. The windshield and windows can be compared to plasma membranes, since they protect the inside of the car from invaders (like insects). The gas tank represents the vacuole because it holds the energy source for the car, and the engine represents the mitochondria because it is the power house of the car
3. What is the main stream of the Mississippi River
system?
Answer:
The Mississippi river water source is fed by Lake Itasca in Northern Minnesota.
Why are restricted-use land regulations more effective at reducing destructive use of forests?
They allow fossil fuel exploration.
They allow grazing of livestock.
They prevent hunting and fishing.
They protect land from human development.
Answer:
The correct answer would be D; they protect land from human development
Explanation:
The main reason why land is being destroyed is because we keep damaging it, also got it right on the test
They protect land from human development is more effective at reducing destructive use of forests. The correct option is D.
Thus, Regulations governing restricted-use land are more effective at halting the destruction of forests because they shield the area from habitation.
These laws place restrictions on how the property can be used, prohibiting actions like logging, mining, and building that could seriously damage the forest ecology.
Restrictive use laws support the preservation of the natural ecosystem, biodiversity, and general health of the forest by stopping or limiting these damaging behaviours.
Thus, They protect land from human development is more effective at reducing destructive use of forests. The correct option is D.
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organisms that cannot make their own food are called
Answer:
HeterotrophsExplanation:
Heterotrophs are organisms that cannot make their own food.
Answer:
Organism that eats or absorbs other organisms for food; can't make their own food from energy; also called a heterotroph.
Explanation:
Define the term peristalsis and explain why is it so important
Answer:
Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. ... There, the food is churned into a liquid mixture called chyme that moves into the small intestine where peristalsis continues. Stretching out a piece of intestine will make it easier to see the wave-like motion
Two things acting upon each other
Answer:
The meaning of force? or gravity pulling the object towards the Earth.
Grouper or a type of fish that often wait until they are around 20 years old to reproduce based on this group or could be considered
The type of fish or Grouper which reproduce when they are around 20 years old is called monandric protogynous hermaphrodites.
The Groupers is a type of fish that is characterized by a large mouth and stout body.
They belong to the subfamily of Epinephelinae.
These groupers are known as monandric protogynous hermaphrodites because they mature to become only females which changes their sexes after sexual maturity.
This change in sex of the fish depends on internal or external triggers.
These reproductive changes usually occurs around 20 years of age in a groupers.
Therefore, the type of fish or Grouper which reproduce when they are around 20 years old is called monandric protogynous hermaphrodites.
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Which of the following is a way that minerals are used?
a industry
b. construction
c. technology
d. all of the above
Please select the best answer from the choices provided
Ο Α
OB
Ос
OD
Answer:
Your answer is all of the above, D.
Explanation:
All of the above are ways that minerals are used.
The ways by which minerals are used are as follows:
industryconstructiontechnologyWHAT ARE MINERALS?Minerals are naturally occurring substances with a definite chemical composition.
Minerals are got from the Earth crust and they include;
iron oreGoldSilverCrude oilThese minerals are used in various ways by industries, construction companies and technology etc.
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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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