Answer:
This is because Protons are moving down a concentration gradient.
Maja puts a hockey puck onto ice. After a while the temperature of the hockey puck decreases. What happens to the molecules of the hockey puck when the temperature of the puck decreases?
Answer: The energy of the molecules in the hockey puck decreases.
Explanation:
When the temperature of the hockey puck decreases, then the energy of the molecules in the hockey puck decreases as well.
In this scenario, when the temperature of the hockey puck decreases, then the hockey puck will gain heat molecules and the cold energy of the molecules that are in the hockey puck will reduce.
Astronomers use the light year to describe the relationship between objects in space, for example, the andromAda galaxy is 2.5 million light years from earth which of the following units is most similar to the light year
A. Gram
B. Second
C. Kilometer
D. Degrees Celsius
How does increasing and decreasing the temperature affect the kinetic energy of molecules?
Please help
If the temperature is increases, the average speed of the kinetic energy will also increase but when the temperature is decreased, the container wall area decreases and therefore molecule-wall collision frequency also increases.
Land plants evolved long before any animals appeared on Earth. When they came onto land, they needed ways to keep from losing water, to reach the sun, and to produce oxygen. They started to convert the atmosphere from carbon dioxide to oxygen. Which of these is believed to be the common ancestor of land plants?
A. oak trees, because they are the dominant species in many areas
B. rose bushes, because they produce a sweet-smelling aroma
C. grass, because there is so much of it found on the land
D. green algae, because they use the same photosynthetic pigments as land plants
Answer:
D. green algae, because they use the same photosynthetic pigments as land plants
Explanation:
What is the most common type of desalination plant in the world?
Answer:
The Hadera seawater reverse osmosis (SWRO) desalination plant in Israel is the largest seawater desalination plant in the world.
state whether volcanoes are evenly distributed over earth’s crust or concentrated in specific areas
Answer: Concentrated in certain areas
Explanation:
Volcanoes are usually formed as a result of collisions or other activity between plates at plate boundaries.
As a result, they are more usually concentrated in zones where there is more plate activity such as at the edges of continents, on islands and beneath the seas in certain areas because this is where plates usually collide with each other.
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Answer:
My Guess Is C if im wrong sorry
Explanation:
Just thinking logicaly
An invasive species of Asian carp was introduced to the Mississippi River and have thrived. It threatens to eliminate many native species of fish. Which of these could be a contributing reason why?
A
The invasive species of fish lay many more eggs than the native species.
B
The invasive species of fish eat a greater variety of foods than native fish, destroying entire ecosystems.
C
The invasive species can survive in more extreme temperatures and water with a lower oxygen concentration.
D
All of these can be contributing reasons.
Answer:
D, they are all contributing reasons.
Which of the following best describes the result of DNA replication?
A. Each chromosome has tripled in size and weight.
B. Each chromosome has four sister chromatids and four centrioles.
C. Each chromosome has double its initial amount of genetic material.
D. Each chromosome has outgrown its cell’s nucleus and begins to expand.
Answer:
The answer is C.
Explanation:
Because it's science.
The total acreage destroyed by the gypsy moth is in the
hundreds.
thousands.
millions.
billions.
Answer:
millions
Explanation:
Which of the following limits cell size? Select all of the answers that apply.
Answer:
Cell size is limited by a cell's surface area to volume ratio. A smaller cell is more effective and transporting materials, including waste products, than a larger cell. Cells come in many different shapes
bacteria use this form of reproduction
Answer:
Bacteria reproduce by binary fission. In this process, the bacteria, which is a single cell, divides into two identical daughter cells.
Explanation:
Bacteria reproduce by binary fission. In this process the bacterium, which is a single cell, divides into two identical daughter cells. Binary fission begins when the DNA of the bacterium divides into two (replicates).
The nucleus is surrounded by a semipermeable membrane. What would happen if this layer were permeable to most substances?
A. The DNA in the nucleus would be protected from harmful substances
B. Enzymes would not be able to speed up reactions in the nucleus.
C. The nucleus would not be able to communicate with the rest of the cell.
D. Large molecules would be able to enter and damage the nucleus.
Answer:
D
Explanation:
If the layer of nucleus were permeable to most substance, then the large molecules would be able to enter and damage the nucleus.
What is nucleus?It is a membrane-bound organelle present in the centre of cell in which thread like structures called chromatins are present which condenses to form chromosomes contains genetic material (that carries genetic information from parents to offspring).It controls all function of the cell.The layer or membrane around nucleus is called nuclear membrane is semi-permeable in nature which means that only specific molecules and ions can move across it.If the membrane would become permeable, then movement of all types of molecules will occur which will disturb the homeostasis (maintaining balance) of cell and can damage the nucleus.Hence, the correct option is: D. Large molecules would be able to enter and damage the nucleus.
To know more about nucleus here
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A student drew the picture of a human body system shown below
Pls help its due today
Answer:
your answer would be G
Explanation:
delivering oxygen and nutrients to organs and cells and carrying their waste products away.
Or, in another way, exchange gasses with the environment.
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In an experiment determining the effects of antibiotics on the treatment of pneumonia in mice, two groups of mice with pneumonia are compared. One group, group A, receives no antibiotic, and the other group, group B, receives 10 mg/kg of body weight of a new antibiotic. Besides the administration of the antibiotic, there are no differences between the two groups of mice. What is the purpose of group A
Answer:
Group A is the control of the experiment
Explanation:
In an experiment, the control group is the group that does not receive any experimental treatment. The control groups are kept in the same condition as the experimental group except the variable being tested (independent variable).
In this question involving an experiment to determine the effects of antibiotics on the treatment of pneumonia in mice. Two groups of mice were employed. One of the groups (group A) received no antibiotic while the other group (group B) received 10 mg/kg of antibiotics. This means that GROUP A is the CONTROL GROUP of this experiment.
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Answer:
The answer is A
Explanation:
It is A because rock, water, and sand are all abiotic , is is NOT c because algae is a biotic factor
If there was no plant's, what would happen to the carbon dioxide
Answer:
There won't be carbondioxide and i think that will affect us big time
Help! Will give brainliest to the best answer.
Using a specific example, predict and explain how the release of non-native organisms can affect local, national, and even global ecosystems.
Different versions of a trait are called...
A. Alleles
B. Loci
C. Chromosomes
D. Punnett squares
Answer:
Different versions of a trait are called...
A.ALLELES
B.LOCIC.CHROMOSOMES
D.PUNNETTT SQUARES
What is the greatest threat humans pose to biodiversity?
Answer:
habitat loss, over-harvesting, and introduction of exotic species
Explanation:
The way that people have altered natural environments to create room for farms or to collect natural resources has posed the greatest harm to biodiversity yet, but as climate change intensifies, it will have a rising influence on ecosystems.
What is biodiversity loss?The term "biodiversity loss" describes the decline in biodiversity brought on by the extinction or relocating of species. Some people might not consider the extinction of a certain species to be significant, especially if it is not a charismatic species such as the Bengal tiger or the humpback dolphin.
However, according to estimates from scientists, the present pace of species extinctions is several times higher than the background, or average, rate seen throughout Earth's history. Within our lifetimes, this amounts to the extinction of tens of thousands of species.
The breakdown of ecosystems is anticipated to have drastic repercussions on human welfare. Because of the intricate relationships between species, a loss of biodiversity may have a ripple effect on ecosystems.
One species' extinction, for instance, may result in the extermination of another. Scientists evaluate which species are in danger of extinction as well as the state of the ecosystems to gauge the loss of biodiversity.
Therefore, the way that people have altered natural environments to create room for farms or to collect natural resources has posed the greatest harm to biodiversity yet, but as climate change intensifies, it will have a rising influence on ecosystems.
Read more about biodiversity loss, here https://brainly.com/question/9634188
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What is an oosphere in relation to biology
Answer:
oosphere (ovum; egg cell) The nonmotile female gamete in plants and some algae. Explanation:
Put the following events in the correct order:
A. mRNA leaves the nucleus and goes into the cytoplasm
B. The DNA sequence is copied to the mRNA sequence during transcription
C. Proteins determine our traits
D. Ribosomes read the mRNA and create a chain of amino acids
Answer:
the correct order is B,A,D,C
A __________ is an example of a signal molecule that can bind to an intracellular receptor and thereby cause a gene to be turned on or off. a protein b glyceride c nucleic acid d steroid e carbohydrate
Answer:
D. steroid
Explanation:
Intracellular receptors are a type of receptors located inside the cell, specifically in the cytoplasm or nucleus. When intracellular receptors are activated by ligands called SIGNALLING MOLECULES, they change shape and regulate genetic expression in the nucleus i.e. they induce turning on and off in a gene.
However, signalling molecules that activate intracellular receptors are usually hydrophobic hormones because they need to easily diffuse through the cell membrane and bind to the receptors located internally. Example of these hydrophobic signal molecules are STEROIDS.
5. As blood enters the capillaries, molecules of oxygen move from the blood into the tissues of the body. Which of the following explains this movement?
d. The concentration of oxygen in the blood is the same as the concentration of carbon dioxide in the tissues.
e. The concentration of oxygen in the blood is higher than that in the tissues f. The concentration of oxygen in the blood is lower than that in the tissues 1
g. The concentration of oxygen in the blood is the same as that in the tissues.
Answer:
The answer is e
Explanation:
Oxygen moves due to diffusion, and the diffusion of oxygen occurs from higher concentration to lower concentration that is from the blood into the tissues
Because there are three different possible reading frames in a messenger RNA (mRNA) molecule, most mRNAs can be translated in a cell into three different proteins. true false
Answer:
False
Explanation:
In the genetic code, each triplet of nucleotides (i.e., each codon) determines one specific amino acid or one-stop codon. The genetic code is not overlapping, which means that the same letter in the genetic code (nucleotide) cannot be used for two different codons. There are 64 possible combinations of triplets of nucleotides, 61 of them determine amino acids, while three triplets determine stop codons (UAG, UAA, and UGA) that indicate the termination of translation. Moreover, the genetic code is also degenerate, which means that one amino acid can be coded by more than one codon.
How does RNA polymerase know where to start and stop making a strand of RNA?
Answer:
Each gene has a beginning and an end. At the beginning of each gene is a similar sequence that tells the RNA polymerase to start working. The same is true at the end of each gene where a specific sequence tells the RNA polymerase to stop transcription
Which of the following is an example of a physical change but not a chemical change?
Teeth breaks down food into smaller particles.
Bile in the liver breaksdown fat globules.
Salivary amylase breaks down the starch in the mouth.
Hydrochloric acid in the stomach grind the protien in the stomach.
Answer:
teeth breaks down food.....
Explanation:
all of the other ones have a chemical change to them, but the teeth one is just crushing food to make a physical change
An organism made up of only one cell is called...
A. multicellular
B. unicellular
Answer:
unicellular
Explanation:
Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism.
Answer:
Unicellular
Explanation:
Uni means consisting of one, and Multi means more than one (:
can trees and plants cause soil erosion?
Answer:
no
Explanation:
it will not cause soil erosion because tree or plant root will handle it very strongly