During muscle contraction, the muscle cell membrane becomes temporarily permeable to sodium (Option b is correct).
Muscle cells are excitable, which means that these cells change from a resting state to an excited state in response to stimuli.At resting (non-signaling) state, Na+ ions are found at a higher concentration outside of the muscle cell than inside the cell, whereas potassium (K2+) ions are found at a higher concentration inside the cell than out the cell.When a nerve transmits an excitable signal that a muscle cell, Na+ flows into the muscle cell, and simultaneously potassium (K2+) ions out of the cell.The influx of Na+ ions is caused by the opening of voltage-gated sodium (Nav) channels found in the membrane (sarcolemma) of muscle cells.In conclusion, during muscle contraction, the muscle cell membrane becomes permeable to sodium ions (Option b is correct).
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what is difference between herbs, shrubs and trees?
Herbs have delicate and thin tissues, shrubs have strong and soft tissues while trees have strong, thick, and hard tissues
Explanation:
herb and shrubs and trees are three types of plants that grow on Earth herbs are the smallest non-woody plants which lack branches schrubs are taller than herb and contain branches at their bases treesare the tallest plant with branches above the ground level
Ian is an 18-year-old gymnast training at a private gym with many other male and female gymnasts. he is competing at an advanced level and is likely to make the next Olympic team. Lately, he has found that some of his balance and strength moves on the rings and parallel bars have become more difficult. He has gone through a bit of a growth spurt and gained approximately 5 pounds over the last year. He suspects the weight gain is causing his performance difficulties. He decides to try a weight-loss program that will help him lose weight before his next big competition in 6 weeks. He is not sure how many calories to consume and therefore arbitrarily decides to eat 1,500 calories per day.
1. Which assessments are required to determine whether Ian needs to lose weight?
2. What type of diet and exercise plan would you recommend for Ian?
3. What additional concerns do you have for Ian's health and sport performance?
Answer:
Explanation:
(1.)
Assessments needed to reduce Ian’s body weight:
A weight-loss program should allow the loss of weight should be fat loss, and the increase of weight should be body muscle mass. Weight reduction should be accompanied by an acceptable exercise regimen (both strength and conditioning). A well-balanced diet with sufficient energy (calories), carbohydrates, protein, and fat should be part of every weight-loss regimen. Excessive exercise resulted in weight loss. Using anorexic medications, laxatives, insulin, diet tablets, stimulants, diuretics, dietary products, or any lawful or illicit drugs and/or nicotine should be banned at all levels.
(2)
type of Diet:
Every day, Ian must eat three meals and just a snack. A fiber-rich cereal with skim milk and fresh fruit can be a better way to start the day.
After that, have a bologna sandwich on the whole bread with fruit or a big vegetable-rich salad together with a small turkey sandwich in addition to a cup of skim milk for lunch.
Poultry hen should be served with potatoes (baked), mixed vegetables, and skim milk for dinner. An early workout snack of a small butter muffin or yogurt combined with cereal should also be included.
Exercise Plan:
i) Bodyweight fat recovery can be supported by proper and secure aerobic activity.
ii) The right kind of aerobic exercise is extremely beneficial for weight loss.
3. Gymnastics is a visually appealing discipline that necessitates speed, strength, and coordination. Most high-level gymnasts eat less than the recommended amount of calories and certain nutrients for their age and training load, according to dietary tests. Young gymnasts, in particular, must absorb enough energy and nutrients to satisfy the demands of growth, exercise, performance, and tissue conservation. Poor energy supply, disordered eating habits, and eating disorders are all factors that can damage a gymnast's long and short-term health. Some gymnasts cross the line into extreme, treatable eating disorders by dieting and using infective weight-loss strategies.
In light of these considerations, Ian should pay attention to his health and diet. Ian should limit his consumption of added sugar intake and increase his fiber intake to help him achieve his body fat targets. Gymnasts can consume at least 1.4–1.8 grams of carbohydrates each pound (3–4 g/kg) per day. Increased protein consumption helps to reduce the amount of muscle lost over a weight-loss cycle. Per day, gymnasts can eat 0.8–1.2 g/lb (1.8–2.7 g/kg) of protein.
Ian would be able to shed weight and prevent an eating disorder in this manner.
17. A terrane becomes part of a continent in a process called
a. rifting.
c. slab pull.
b. converging.
d. accretion.
Which of the following would be the optimal time for a grower to plan passive freeze protection for an orchard?
A) at planting time
B) prior to a cold snap
C) prior to planting
D) at grafting time
[tex] \\ [/tex]
A) at planting time
[tex] \sf \: a) \: \boxed{ \underline{\bf \: \: at \: planting \: time}} \: \sf is \: the \: answer.[/tex]
why in an ovary, germ cells undergo oogenesis (enter meiosis) during fetal life (before birth). but in a testis, germ cells do not undergo spermatogenesis (do not enter meiosis) until puberty?
HEY I NEED SOMEONE TO HELP ME WITH THESE NOTES PLZ
3. What do prokaryotes and eukaryotes have in common?
A. Both are always single cell organisms
B. Both contain DNA
C. Both have a nucleus
D. Both are complex cells
Answer:
B. Both contain DNA
Explanation:
both contain Dna....is right
Please select the word from the list that best fits the definition
The movement of a substance through the cell membrane that requires energy.
Answer:
The correct answer is - active transport.
Explanation:
Active transport is the movement of a substance that crosses the cell membrane against the concentration gradient and therefore requires energy in the form of ATP. In contrast, passive transport does not require energy for the movement of a substance through the cell membrane as it moves to the concentration gradient.
This movement of molecules is towards the region of high concentration from the region of lower concentration through the cell membrane by elcectrochemical gradient or ATP.
How would expect the biomass to change after ten days if seeds and plants were provided the following conditions?
No light, water (seeds sprouted): Stay the same, decrease, or increase
Light, water (seeds sprouted): Stay the same, decrease, or increase
Light, no water (seeds did not sprout): Stay the same, decrease, or increase
Answer:
La biomasa (energía) se refiere a la biomasa «útil» en términos energéticos formales: las plantas transforman la energía radiante del Sol en energía química a través de la fotosíntesis, y parte de esa energía química queda almacenada en forma de materia orgánica; la energía química de la biomasa puede recuperarse quemándola directamente o transformándola en combustible.
Explanation:
During DNA replication, which of the following components is not required?
Answer:
im not sure, but i think its single-stranded
Explanation:
The study of a gene is called genetics.
The question is incomplete kindly provide it with the option for a better understanding of the topic.
The duplication or making of new DNA from the older DNA is called replication.
The process of replication required various enzymes and another nucleotide to make a new DNA.
In my opinion, the thing which is not required to the process of replication is RNA polymerase as it is required to duplicate the RNA not DNA.
Hence, the correct answer is RNA polymerase.
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HELP PLEASE
What behavior allows newborn animals to recognize and follow the first moving object they see?
Question 4 options:
conditioning
courting
mimicking
imprinting
Answer: imprinting
Explanation: i took the test
If you were trying to better understand keratin
production, which layer of skin would
you research?
epidermis
immune cells
dermis
0 hypodermis
DONE
Answer:
Epidermis (A)
Explanation:
Correct on Edgd
How can photosynthesis be related to cellular respiration?
Question 8 options:
These two processes have nothing in common.
They both have the same reactants (need the same things).
They both produce the same products.
What's produced (made) by one is needed (the reactants) for the other.
Drafts, wind, or physical placement of buildings can make it difficult for investigators to determine where a fire started.
A. True
B. False
Answer:
A. True
Explanation:
I took it on a test and it was correct ; )
Answer:
true
took the test
I’m marking as brainliest! Choose the correct answer!
Answer: If this image is a representation of someone eating food and the food is going down their esophagus (throat) then I would go with D because the muscles are pushing the food towards your intestines which then break down the food.
What percentage of the offspring will be purebred dominant? (Help, if you responded thank you)
Answer:
25%
Explanation:
it is only 25% percent because it said purebred which means two identical alleles and YY was the only purebred dominant trait. It is also 25% because you split it up into fours. Its like splitting up a dollar. One trait means 25% two traits 50% three traits 75% 4 traits 100%. hope this helps
Why are some scientists concerned about
the Atlantic cod population as the air temperature increases?
Answer:
As greenhouse gas pollution increases, it will create a double whammy for Atlantic and polar cod populations, with warming and more acidic water projected to undercut their reproduction and alter their habitat dramatically, new research shows.
Explanation:
Which numbers identify the organelles that are present in BOTH plant and animal cells?
Answer: answer is A. Because both plants and animals have plasma membranes, cytoplasm, and mitochondria.
Further Explanation
Cell organelles are components of the cell and life. Cell organelles are the most important part of cells that function to regulate the life processes in cells. Cell organelles are in a part called the cytoplasm. Cell organelles consist of several parts, each of which has a different function but functions as a system that supports the life processes that occur in cells.
Animal Cell Organelles
Animal Cell Organelles are forms of eukaryotic cells that form body tissues and then form organs.
Animal cell organelles consist of:
vesicles
mitochondria
centriole
the nucleus
nucleoli
chromatin
ribosome
endoplasmic reticulum
microtubules
plasma membrane
Vacuoles
cytosol
core membrane
Golgi body
lysosome
vesicles.
Cell Plant Organelles
The functions of these plant cells include
as a constituent of the body of plants
activator of all activities in the body of plants,
related to the process of growth and development in plants,
carrier of genetic traits in plants, and
related to plant reproduction.
Cell Plant Organelles consist of:
Cell nucleus (nucleus)
Chloroplast (Plastida)
Ribosome
Mitochondria
Golgi Agency
Endoplasmic reticulum
Vacuoles
Peroxisomes
Explanation:
Describe how individual cell breakdown energy rich molecules to provide energy for cell functions
Answer:
Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
Explanation:
Cells need a source of energy, they get this energy by breaking down food molecules to release, the stored chemical energy. This process is called 'cellular respiration'. The process is happens in all the cells in our body. Oxygen is used to oxidize food, main oxidized food is sugar(glucose).
In the Diffusion Through a Membrane lab, the model cell membranes
allowed certain substances to pass through based on which characteristic
of the diffusing substance?
O (1) size
O (2) shape
O (3) color
O (4) temperature
Answer:
4
Explanation:
Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion. Lower temperatures decrease the energy of the molecules, thus decreasing the rate of diffusion
characteristics of plasmodium
Explanation:
Characteristics of Plasmodium
They characteristically show the presence of apical complex.
Apical complex consists of polar rings, rhoptries, micronemes, mitcochondrions, microtubules and microspores
Organs for locomotion
They show slight amoeboid change of form
The parasite in their life cycle shows an alternation of generation accompanied by an alternation of host
What are the key things to learn about a cell?
Answer:
1
Explanation:
all living organisms are made up of cells.
Energy from the sun assists with the water cycle by:
A. Filling oceans
B. Precipitation
C. Water evaporating on Earth
D. Clouds becoming more dense
Choose one correct answer
Answer:
C
Explanation:
The heat of the sun provides energy to make the water cycle work. The sun evaporates water from the oceans into water vapor. This invisible vapor rises into the atmosphere, where the air is colder. The colder air causes water vapor to condense into water droplets and clouds.
Question 10 Sarcomeres are functional units _____muscle
A) Cardiac
B) Skeletal
C) B and C only
D) Smooth
briefly explain each one correct or incorrect . thanks
Answer:
skeletal
Explanation:
Cardiac muscle are only found in the heart
Smooth muscles generally form supporting tissue of blood vessels and hollow internal organs e.g stomach, intestines.
6. Define allele, please help me out
Answer:
allele is the pair of gene controlling the pair of contrasting characteristics
Answer:
each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
hope this answer helps you!
HELP!!! Im doing an honors assignment for science class on space weather! I dont need you to do it I just need someone to help me understand it!
here are the instructions:
Advanced Space Weather Activity
This lesson highlighted different types of space weather. If you were responsible for reporting space weather like Earth's weather is reported, how would you do it? What would you include?
Create any type of weather report to warn people about space weather activity. You can present it like a weather app, radio announcement, television news report, or newspaper weather section. You only need to pick one type of report to submit to your instructor.
They gave an example below however im confused if I should copy it and put my own words or if I should just make like a video or something!
please help me :(
Answer:
If I was responsible for earth weather, I would do this:
People watch TV every day. No? Well. some do! I would create something better than amber alerts, something better than the news on TV. I would put earth's loudest megaphones in every single state. One in every city. About 670,000,000,000 in total! It would tell people all around the world what the news up in space is ! For backup, I would also use a weather app but for space. People are on their phones everyday. Lets make it useful! The space weather app would tell people everyday what the weather is up in space, making them interested in space weather! For instance, Over at Mars, its currently 35° degrees! Many people are interested in space, let them know the weather of their favorite planets ! Make a channel on TV ! Hope this helps <3
The oxygen cycle is closely related to which other cycle?
A. The carbon cycle
B. The nitrogen cycle
C. The phosphorus cycle
Answer:
A
Explanation:
that what i think
i don't know if I'm right
explain in your words indigenous knowledge
Answer:
is the unique knowledge confined to a particular culture or society. It is also known as local knowledge, folk knowledge, people's knowledge, traditional wisdom or traditional science.
Explanation:
Cold air usually pushes warm air because cold air has a _____________.
A. higher density
B. lower density
C. lower pressure
D. higher molecule speed
Site A is pavement. Site B is bare soil. Site C is a forest, and they are all at the same slope. The percentage of rainwater that becomes runoff is greatest at Site
Site A is pavement. Site B is bare soil. Site C is a forest, and they are all at the same slope. The percentage of rainwater that becomes runoff is greatest at Site B. This is further explained below.
What is bare soil.?Generally, bare soil is simply defined as any soil or sand that is not blanketed by a layer of anything else is considered bare soil.
In conclusion, Site B is bare soil and also has the highest propensity for erosion
Read more about bare soil.
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