what is the role of the blood vessels
Answer:
Blood vessels are the channels or conduits through which blood is distributed to body tissues. The vessels make up two closed systems of tubes that begin and end at the heart. One system, the pulmonary vessels, transports blood from the right ventricle to the lungs and back to the left atrium.
Explanation:
pls help me !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Up and down are balanced cuz they are the same. However, left and right is unbalanced
Explanation:
I you notice up and down are equal numbers, so there's no effect, BUT, there are 0.5 more points to the left then right (1.0), so its going to the right.
what type of event can disrupt the energy cycle
Answer:
Climate change is disruptive because humans have adapted to a narrow range of environmental conditions.
HOPE THIS HELP YOU!!! ;)))
Describe different ways that cell shape can be modified so that diffusion time will be decreased to support life processes.
If swimmers add 1,500 J of thermal energy to the pool and the surrounding air adds 2,500 J of thermal energy what is the total change in energy
Answer:4,000 J
Explanation:
--JUST DID ON APEX--
Consider a hypothetical scenario in which the genes that determine body color, eye color, and wing type in fruit flies occur on the same chromosome. To determine the order of the three genes on the chromosome, a researcher looks at hundreds of flies and makes these observations: 90% of flies with red eyes have curly wings. 75% of flies with red eyes have black bodies, whereas the remaining 25% have brown bodies. 1% of flies have curly wings, white eyes, and black bodies. Based on these observations, what is the most probable location of each gene on the given chromosome
Answer:
The most probable location on the chromosome of each gene is:
wing shape gene ------- eye color gene -------- body color gene
Explanation:
To know if two genes are linked, we must observe the progeny distribution. In a tri-hybrid cross, If individuals, whos genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1:1:1:1:1. If we observe a different distribution, that is that phenotypes appear in different proportions, we can assume that genes are linked in the heterozygote parent.
We can recognize the parental gametes in the descendants because their phenotypes are the most frequent, while the double recombinants are the less frequent. And simple recombinant gametes produced by the cross, which frequencies are intermediate.
By comparing the parental and the double recombinant we will realize which is the allele that changes in position. The position of this gene is in the middle of the other two genes because in a double recombinant only the central gene changes position in the chromatid.
So, according to this knowledge and the available information in the problem we can estimate the position of the genes in the chromosome.
Phenotypic proportions:
90% of flies with red eyes have curly wings (Parental)75% of flies with red eyes have black bodies (Simple recombinant)25% of flies with red eyes have brown bodies (Simple recombinant)1% of flies have curly wings, white eyes, and black bodies (Double recombinant)90% of individuals are red-eyed and curly-winged. This is a high frequency, which means that this is the parental phenotype. The other parental phenotype must be white eyes and straight wings.
Flies with curly wings, white eyes, and black bodies represent the lower proportion (1%) so this phenotype must be the double recombinant.
Flies with red eyes and black bodies, and flyes with red eyes and brown bodies are intermediate in proportion, so they must be simple recombinant phenotypes.
Parental)
Red, Curly
White, Straight
Double recombinant)
White, Curly, Black
Red, Straight, Brown
Simple recombinant)
Red, Black
Red, Brown
In the chromatid, there are two regions, Region 1 (from the first gene to the gene in the middle), and region 2 (from the gene in the middle to the gene of the other extreme).
The fact that both simple recombinants are red, tells us that the eye color gene and the body color gene are together, and the recombination occurred either in region 1 or 2.
We know that the double recombinant is White, Curly, Black. We also know that the eye color gene and the body color gene are together, so one of these two must be in the middle.
Parentals are red and curly, which means that the eye color gene and wing shape gene are also together. This leads us to assume that the eye color gene is in the middle.
Finally, the fact that the double recombinant is White, Curly, Black, and knowing that the eye color is in the middle and that both the extreme alleles change position, we can assume that the parental Red, Curly is also black, while the other parental is white, straight and brown. So:
Parental)Curly ------ Red ------Black (90%)
Straight ----- White ----- Brown
Simple recombinant)Curly -----White-----Brown
Straight-----Red -----Black (75%)
Curly----Red-----Brown (25%)
Straight ----White-----Black
Double recombinant)Curly-----White------Black (1%)
Straight----Red------Brown
what describes each hydrogen bond?
Answer:
A hydrogen bond is a type of attractive (dipole-dipole) interaction between an electronegative atom and a hydrogen atom bonded to another electronegative atom. This bond always involves a hydrogen atom. Hydrogen bonds can occur between molecules or within parts of a single molecule.
I just bombed this test and i have 1 retake left. please help!!
Answer:
Thermodynamics
Explanation:
By definition, thermodynamics is the study of energy transformation that occur in a collection of matter.
Answer:
Hey!
Your answer is THERMODYNAMICS!
Explanation:
THERMODYNAMICS: the study on the way energy changes from one type to another (like from THERMAL to KINETIC energy). The rules on thermodynamics adhere to its energy and the energy conversions!
I HOPE THIS HELPED YOU!
How are the studies performed on rainbow trout ( Oncorhynchus mykiss) and the moss Pleurozium schreberi and the desert shrub Atriplex lentiformis similar? Both studies are coupled to enzymatic activity. Both studies support the concept that species operate within a narrow optimum temperature range. Both studies support the concept that species operate within a narrow optimum temperature range and are coupled to enzymatic activity. Both studies examine the effects of microclimates and studies support the concept that species operate within a narrow optimum temperature range. Both studies examine the effects of microclimates.
Answer:
Both studies support the concept that species operate within a narrow optimum temperature range and are coupled to enzymatic activity.
Explanation:
The studies shown in the question above started from the same concept to establish the scientific experiment and had the same objective related to the investigation as temperature changes in the environment where these organisms live influences the enzymatic activity and, therefore, the functioning of their organism, being able to including modifying the environment around them. In summary, we can say that the studies sought to support the concept that species operate within a narrow range of optimal temperature and are coupled with enzymatic activity.
Jenny brings home a plant with an internal concentration of 25g/ml. She puts the plant in her aquarium and fills the aquarium with water from the tap.
The plant will swell and possibly burst if the cell walls are weak.
B
The plant will wilt and possibly break apart if the cell membranes are weak.
C
The plant will thrive in a new type of environment.
D
The plant will become a creeping vine and grow out of the aquarium.
The plant will swell and possibly burst if the cell walls are weak. So, the correct option is A.
What is Cell wall?A cell wall is an external structural layer that surrounds some types of cells. It may be hard, flexible, or occasionally rigid. It serves as a filtration system as well as structural protection and support for the cell. The cell wall composition varies according to the organism which is permeable in nature
The cell wall isolates the inner elements from the surrounding environment. The cell as well as its organelles are also development in the context, support, and protection by it. But only eukaryotic plants, fungi, and a few prokaryotic creatures have this cellular component. If the plant's cell walls are insufficient in the case above, it will enlarge and possibly burst.
Therefore, the correct option is A.
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What are volume and density? How do they relate to each other?
Explanation:
Density is defined as the amount of mass present in per unit volume.
The diagram shows an atom of a neutral element from the periodic table.
Answer:
Noble gases
Explanation:
18 the grop
What does not affect viruses but destroys bacteria
Answer:
I think antibiotics
Explanation:
Hope it helps :)
Brainliest pls? Have a good day/night
Which of the following characteristics least relates to prokaryotic cells?
1.cells that do not have a nucleus or membrane bound organelles
2.cells that have a nucleus and membrane bound organelles
3. bacteria
4. Archaea
Answer:
2
Explanation:
Prokaryotic cells don't have a nucleus or membrane bound organelles
Cells that have a nucleus and membrane bound organelles are least relates to prokaryotic cells.
A prokaryote is a single celled organism that lacks a nucleus, and other membrane bound organelles.What are eukaryotes?Eukaryotes are organisms whose cells contain a nucleus and other membrane-bound organelles. There is a wide range of eukaryotic organisms, including all animals, plants, fungi, and protists, as well as most algae. Eukaryotes may be either single-celled or multicellular.To know more about cells here
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Is this Red blood cell in a Hypotonic, Isotonic, or
Hypertonic solution?
Explanation:
It is hypertonic . Hope it will help you!
Answer:
[tex]\boxed {\tt Hypertonic}[/tex]
Explanation:
The H₂O, or water is exiting the cell, and the result is shriveled up red blood cells.
In a hypertonic solution, there is a greater concentration of solute outside the cell and a greater concentration of water inside the cell.
The water will diffuse through osmosis from high to low concentration, so the water moves out of the cell.
Therefore, this is a hypertonic solution.
NEED HELP ASAP * I THINK IS MY ANSWER
Table salt is a compound created when sodium (atomic number 11) and chlorine (atomic number 17) atoms bond. Which of the following correctly describes this bond?
A)sodium and chlorine share two electrons
B)a sodium atom gives all of its electrons to chlorine.
*C)a sodium atom gives one electron to a chlorine atom *
D)a chlorine atom gives a proton to a sodium atom
Answer:
oh it D
Explanation: DDDDDDD
Answer:
D
Explanation:
Definition: A polygon with 4 sides is called a ____.
quadrilateral
Hope it helps
Answer: Quadrilaterals
Explanation:
Aquarium salt water is prepared to a salinity of 30 ppt (parts per trillion) by dissolving 3.26 kg of salt into 114 L of water. If you wanted to make 4,000 mL of salt water at the same salinity, how many grams of salt will you need?
Answer:
114 gram of salt is required.
Explanation:
Below are the following given data in the question:
Prepared salinity water = 30 ppt
Weight of salt used = 3.26 kg
The volume of water = 114 L
Below is the calculation.
4000 mL = 4000/1000 = 4L
Let the used = x kg
3.26/114 = x/4L
Now solve for the x.
x = 0.114 kg or 114 gram
What can help a scientist identify any object in a group of objects? O the object's size the object's colors O the object's characteristics O the object's shape Mark this and return Save and Exit Next Subinit
Answer:
c
Explanation:
took the test
Answer:
C(the object's characteristics)
Explanation:
Dimples are dominant to no dimples. What is the phenotype of a person with the genotype (Dd)?
Answer:
the answer for is heterozygous
Heterozygous is the phenotype of a person with the genotype (Dd).
What do you mean by phenotypes?The phenotype is the set of observable characteristics or traits of an organism. The term covers the organism's morphology or physical form and structure, its developmental processes.
Phenotype refers to an individual's observable traits, such as height, eye color and blood type.
A phenotypic ratio is a quantitative relation between phenotypes showing the number of times the frequency of one phenotype correlates with another.
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If a plant of a maple tree has more chloroplasts than the leaf of a tomato plant, then
A. the maple tree will have an increase in photosynthetic potential
B. the maple tree will have an increase in respiration potential
c.the maple tree will have an increase in carbon dioxide production
D. the maple tree will have an increase in water production
Answer:
I think it's A and B (viewpoint)
Patches of suitable habitat surrounded by unsuitable habitat is called
Answer:
Habitat fragmentation
Explanation:
Habitat fragmentation occurs when a particular habitat breaks up i.e. becomes discontinuous. That means areas of suitable habitat are surrounded by areas unfavorable for the survival of organisms.
This is common during the destruction of previously large areas of forest.
Molecules that are ___
and ____
membrane easily.
pass through the cell
Pure liquid water has pH of 7 which means that water is
Answer: neutral
Explanation: The range goes from 0 to 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
Answer:
pH is a measure of how acidic/basic water is. The range goes from 0 to 14, with 7 being neutral. pHs of less than 7 indicate acidity,
Explanation:
hope this helped :)
What sort of overall charge will this atom of phosphorus have?
Answer:
negative
Explanation:
Tha last shell has 5 in its valency
It needs to gain in order to reach a full outer shell
Cells can detect changes in their environment and signals from other cells using
enzymes
DNA
receptor protiens
membrane phospholipids
Explain why it is important to consider the role of humans when we learn about environmental science.
Answer: When you study environmental science, you commit to learning of accomplish important tasks for our Earth and our human population.
Explanation: Hope this helps! :)
Just how different are these two populations of juncos from one another ?
Answer:
quizlet.com
/316906990/
juncos-physical-traits
-9th-grade-
lesson-16-l
esson-f
lash
-cards
/
Explanation:
take out the spaces
Answer for number 7 please! 30 points! Actually 60 point! :)
Answer:
i need a better photo
Explanation:
water freely enters and leaves cells through channels by membrane proteins by
Answer:
Your answer is Osmosis
Either by protein channels or by sliding through the lipid tails of the membrane itself, water may also travel easily through the cell membrane of all cells.
