Answer:
Blood cells are the cells that carry oxygen
blood cells dont only carry Oxygen, blood cells also carry water, minerals, nutrients, and proteins throughout the different parts of the human body
Explanation:
hope this helps :)
What is the function of the organelle labeled A in the diagram?
Answer:
A is pointing to the cell membrane. The cell membrane's main function is to provide protection for the cell as well as allow substances in and out of the cell due to selective permeability.
Explanation:
Some other functions:
-Endocytosis and Exocytosis
-Cell Signaling
Describe how radiation fog forms.
Answer:
Radiation fog forms in the evening when heat absorbed by the Earth's surface during the day is radiated into the air. As heat is transferred from the ground to the air, water droplets form. Sometimes people use the term “ground fog” to refer to radiation fog.
I THINK ;)
Answer:
Radiation fog forms in the evening when heat absorbed by the Earth's surface during the day is radiated into the air.
Indicate whether each statement is true or false. 1. Rod cells are depolarized in the dark. (Click to select) 2. Glutamate binds to receptors on bipolar cells and causes them to depolarize. (Click to select) 3. Light and dark adaptation are accomplished by changes in the amount of available iodopsin. (Click to select) 4. When light reactions occur, retinal is completely released from opsin. (Click to select)
Answer:
The correct answer is - 1. true, 2. true, 3. false, and 4. true.
Explanation:
1. Rod cells are the photoreceptors present in the retina that are hyperpolarized not depolarized in dark due to sodium ions efflux.
2. Depolarisation of the bipolar cell of the retina by glutamate release by rods and cones.
3. The adaption according to the light is known as a light adaptation which takes place due to a large part of photochemical in both rods and cones which is reduced to retinal and opsins.
4. when the light reaction takes place retinal converted to opsin
Rod cells are photo-receptors that present in the retina. They hyper-polarized in the dark due to sodium ions efflux. Statement 1, 2, and 4 are correct while statement 3 is incorrect
1) Rod cells are photo-receptors that present in the retina. They hyper-polarized in the dark due to sodium ions efflux.
2) Depolarization of the bipolar cell of the retina is caused by glutamate released from rod and cone cells.
3) The changes according to the light is known as a light and dark adaptation which is accomplished by the change in oidopsin.
4) In the light reaction takes place retinal converted to opsin,
Therefore, Statement 1, 2, and 4 are correct while statement 3 is incorrect.
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Which of the following best explains the endosymbiosis theory of how eukaryotic cells originated, as shown below? A.Eukaryotic cells developed from mutations in prokaryotic cells
B.Eukaryotic cells developed from organic compounds carried to Earth by debris from space
C.Eukaryotic cells originated from a combination of gases and heat in the atmosphere
D. Eukaryotic cells were originally large prokaryotic cells that absorbed smaller prokaryotic cells
Answer:I’m sure the answer is D
Explanation:
All eukaryotes evolved from prokaryotes and eventually developed into mitochondrial organelles.
The endosymbiotic theory represents that some of the organelles in eukaryotic cells were prokaryotic microbes at some time. As per the endosymbiosis theory the eukaryotic cells were at first large prokaryotic cells that absorbed smaller prokaryotic cells.
What is endosymbiosis?Endosymbiosis is the engulfing of the cell by another one to produce, over time, a coevolved relationship in which none of the cell could survive alone.
It is an evolutionary theory that guides the origin of eukaryotic cells by prokaryotes.
Eukaryotic cells were previously large prokaryotic cells that actually absorbed smaller prokaryotic cells
Thus, the correct option is D.
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Which of the following are made of carbohydrates? (Check all that apply)
Vegetables
Bread
Fruit
Sticks
Butter
Bacon
The following are made of carbohydrates are ;
VegetablesBreadFruitButterWhat are Carbohydrates?Carbohydrates are the biomolecules that act as the primary sources of energy. When the body requires instant energy the biomolecule that is first consumed is a carbohydrate.
Vegetables are a rich source of carbohydrates for example potatoes, sweet potatoes, corn and Beetroots.
Vegetables are the major source of carbohydrates.
Thus, this could be the answer.
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For something to be considered dead, it used to do what? Plz help
Answer:
C. Carry out all 5 of the life processes but no longer can
Explanation:
All living things are characterized by their ability to grow, reproduce, use energy by respiration, respond to stimuli, and easily adapt to their environments. When a living thing loses the ability to perform all of these basic functions, then it can be said to be non-living, or dead.
In addition, locomotion, excretion, metabolism, and nutrition were all exhibited when dead things were once alive.
Dr. Robert Hazen has worked to develop a hypothesis that explains
the origin of life on Earth. His work has focused on hydrothermal vents, which are cracks in the ocean floor. Water heated by molten rock beneath the crust escapes from these vents at very high temperatures, producing hot, high-pressure environments at the vents on the ocean floor.
In order to provide evidence that these vents may be areas where life originated, which of the following states a null hypothesis Hazen might have used to begin his research?
(A) Organic molecules were transported to the hydrothermal vents via a meteorite, thereby seeding them with precursors for more complex molecules.
(B) The temperatures and pressures found in hydrothermal vents resemble conditions described in currently accepted origins of life hypotheses.
(C) Organic waste sinking to the ocean floor would have used the unique hot water environment as an energy source to begin manufacturing food.
(D) Chemosynthetic organisms can best develop in the hydrothermal environment, manufacturing nutrients for other living things to feed on.
Answer:
(B) The temperatures and pressures found in hydrothermal vents resemble conditions described in currently accepted origins of life hypotheses
Explanation:
We are told that Dr. Hazen wants to develop a hypothesis that explains
the origin of life on Earth.
Now, he focused on hydrothermal vents. That Water heated by molten rock beneath the crust escapes from these vents at very high temperatures, producing hot, high-pressure environments at the vents on the ocean floor.
This means the null hypothesis will be temperatures and pressures found in this initial condition he described while any other different from it will be the alternative hypothesis.
Looking at all the given options and comparing with the initial hypothesis conditions in the question, the correct answer is option B.
The origin of life can be seen as the natural process in which the origin of living things happen through non-living matter or smaller organic compound.
The null hypothesis is:
(B) The temperatures and pressures found in hydrothermal vents matches the conditions described in currently accepted origins of life hypotheses.
The null hypothesis for Dr. Robert Hazen hypothesisThe hypothesis says that hydrothermal vents are cracks in the ocean floor.It also states that there were high temperatures and high pressure environment.Thus, the option (B) The temperatures and pressures found in hydrothermal vents matches the conditions described in currently accepted origins of life hypotheses is the best null hypothesis for Dr. hazen to begin his research.
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which animal listed below would complete this food chain?
grass ⇒ __________
A. snake
B. lion
C. hawk
D. cow
Answer:
D
Explanation:
Cows eat grass
FOR BRAINLIEST!! PLEASE HELP!! Older people in town who were surveyed are more likely to go on daily walks than the younger people who live in this town. What can researchers MOST likely conclude from this information?
Answer:
some older people like to go on daily walks(makes sense out of all sorry if its wrong)
Which of the following happens to chromosomes during prophase?
A.They move to opposite sides of the cell.
B.They become centrioles.
C.They condense.
D.They disappear.
They condense.
Explanation:
The complex of Dna and proteins contained in the nucleus, known as chromatin,condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes The sister chromatids are pairs of identical copies of DNA joined at a point called centromere.
what are the differece between facts theory and hypothesis in scientific ex'p
Answer:
Theory, and Law In Science.
Explanation:
for a phenomenon made as a starting point for further investigation.
Products of the breakdown of an original pesticide or herbicide are called __________.
A)
silt
B)
degradates
C)
soil peds
D)
cations
E)
aggregates
Answer:
B
Explanation:
degradates
Which of the following is part of the structure of a fruit? glume monocot mesocarp cotyledon
Answer:
Mesocarp
Explanation:
How could biotechnology lead to a decrease in the use of pesticides?
Plants can be genetically engineered through the use of biotechnology to be less susceptible to insects. This trait will make pesticide use less necessary.
This is the sample answer on edge.
This method combines the genetic productivity enhancement of plants with the management of their hazardous organisms.
How is biotechnology used?Typically, agricultural biotechnology is utilized to boost plant production productivity to reduce the use of pesticides.
In agriculture by applying biotechnology, pest management and the use of pesticides will be reduced for modified plants.
The emergence of insect-resistant plants will be accelerated by technological advancements, and with an improved grasp of biotechnological processes, the acceptance of biotechnology goods might grow.
Therefore to reduce paste management and make crop resisitance for paste biotechnology is used.
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Which landform is created when two continental plates are colliding?
A.canyon
B.mountains
C.rift valley
D.mid-ocean ridge
Answer:
C.rift valley
Explanation:
Help plz this is fast
Answer:
mold is the answer to the question
The process of counting a portion of a population of a species in a particular area and using that number to estimate the total population without physically interacting with the species is called __________.
A)
restoration
B)
mark/recapure
C)
bottlenecking
D)
sampling
E)
arcology
Answer:
sampling (d)
Answer:
D) sampling
Explanation:
A sample, in the context of scientific research and statistics, is a representative subset of a population
I need help help me please
Answer:
they work together to benefit
Question 4
If you have a cell that has a higher concentration of water inside the cell than
outside the cell, which direction will the water move?
1.Outside
2.Neither (I already tried this one it’s incorrect)
3.Inside
Tell me one thing you know about replication.
Answer:
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
Thats one thing ;)
Describe the cause and symptoms of Down syndrome.
The causes of down syndrome are:
The symptoms of down syndrome are:
Attached above..
Proteins are made in organelles called
A ribosome B Golgi bodies C DNA D Chloroplast
Answer:
A) Ribosomes
Explanation:
Proteins are made in the organelles called... RIBOSOMES.
Hope that helps
Answer:
A
Explanation:
What happened if we add normal saline instead of PBS during beta amylase extraction?
Answer:
hi
Explanation:
Saline is the solution of water and NaCl does not provide the appropriate pH, so enzyme activity is lost, we cannot add saline instead of PBS during beta amylase extraction.
How saline water affects beta amylase extraction?PBS (phosphate buffer solution) is a type of buffer that is suited for beta-amylase activity, which implies that when beta-amylase is extracted using buffer, the enzyme's chemical activity is kept.
When we utilize saline, which is a solution of water and NaCl, the pH of the solution is not acceptable, and the enzymes' chemical activity is destroyed.
As a result, for enzyme/protein extraction, we always employ a buffer solution, which maintains the ph for the proper functioning of an enzyme.
Therefore due to pH conditions enzyme lost activity, and normal saline water can not be used instead of PBS for extraction of beta-amylase.
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• Describe the distribution of electrons around the nucleus of an atom
Answer:
Viewed simply, electrons are arranged in shells around an atom's nucleus. Electrons closest to the nucleus will have the lowest energy. Electrons further away from the nucleus will have higher energy. ... In a more realistic model, electrons move in atomic orbitals, or subshells.
Explanation:
What is the difference between genetic variation and an adaptation? Give an example for each.
Answer:
Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations. Random mutations are the initial cause of new heritable traits. For example, a rabbit can't choose to have a different fur color.
Explanation:
1) In yeast signal transduction, a yeast cell releases a mating factor which
A) acts back on the same cell that secreted the mating factor, changing its development
B) passes through the membranes of neighboring cells, binds to DNA, and initiates transcription
C) binds to receptors on the membranes of other types of yeast cells
D) diffuses through the membranes of distant cells, causing them to produce factors that initiate
long-distance migrations
In yeast signal transduction, a yeast cell releases a mating factor that diffuses through the membranes of distant cells, causing them to produce factors that initiate long-distance migrations. Thus, the correct option for this question is D.
What is the mechanism of reproduction in yeast?The mechanism of reproduction is yeast is processed through the process of budding which is a type of asexual reproduction. In this mechanism, A bud is a tiny protrusion from the parent cell that pinches off and produces a new individual when it reaches maturity.
Yeast is a single-celled organism that does not have complexity in its process and functions. So, this organism performs its mechanism of reproduction and other functions through the process of diffusion.
Therefore, in yeast signal transduction, a yeast cell releases a mating factor that diffuses through the membranes of distant cells, causing them to produce factors that initiate long-distance migrations. Thus, the correct option for this question is D.
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What is one condition that barnacles need to keep balanced?
These are the extensions of a neuron through which impulses are sent away from the cell body to other neurons, glands or muscles.
Group of answer choices
neurons
nerves
axon terminals
sensory
(65 points)
The value of acceleration due to gravity
on the surface of earth is:
8.9 m/s2
7.8 m/s2
9.8 m/s2
Answer:
9.8 m/s2
Explanation:
Annie Laurie helped bring the story of the devastating
San Francisco earthquake.
Lindbergh kidnapping.
Galveston flood.
World War I.
Answer:
Galveston flood
Explanation:
Answer:
Galveston flood
Explanation: