The blood circulates throughout the body because of the contraction and relaxation of the heart which pushes the blood throughout the body. So, the correct option is B.
What is the circulatory system?The circulatory system is a specialized system for the circulation of blood throughout the body. This blood is rich in nutrients obtained from the digestive system after digestion and oxygen obtained from the respiratory system after breathing.
The circulatory system is like an industrial pipeline system in which a pump or motor, pipes and the component flow through the pipes.
The blood vessels represent the pipes. There are two types of blood vessels, the arteries and the veins which carry oxygenated and deoxygenated blood respectively.
The blood is the component flowing through the blood vessels. The blood is a liquid tissue, in which the liquid component is called the plasma and the cellular component is represented by three types of cells. These are the red blood cells, white blood cells and platelets. The nutrients flow freely in the blood plasma and oxygen is carried by the Red blood cells.
The heart is the pump of this system, it contracts to push blood through the blood vessels and relaxes to allow blood into its chambers. The human heart has four chambers.
Therefore, the correct option is B.
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11 - Lulu the Lioness: A Heroine's Story
Answer:
lion as a highly social animal present a number of issues when it comes to knowing parentage: there can be multiple males in a group mating with many of the female, females raise the young of other pride member.
why are antibiotics unhelpful for treating the common cold ?
A. Colds are cause by Viruses B. Colds are caused by antibiotics C. Antibiotics cannot treat illnesses D. Bacteria are not killed by antibiotics
Answer:
A
Explanation:
antibiotics fight bacteria not viruses
why are advantageous traits more likely to be passed onto offspring
Answer: Variations of traits causes those better suited to the environment to survive and reproduce. ... Why are advantageous traits more likely to be passed onto offspring? Because they are more likely to survive and reproduce.
Explanation:
WILL GIVE BRAINLY IF CORRECT!!! WILL REPORT RANDOM ANSWERS!!! ASAP!!
1. Which statement is true regarding the above picture?
A. Both organisms are probably a similar species.
B. Both organisms had similar development.
C. Both organisms have the same anatomical structure.
D. Both organisms use their limbs for the same function.
Answer:
Im pretty sure its D
Explanation: Brainliest plz trying o level uoPlants experience_____
thigmotropism when they use a fence to help stabilize their stems.
A. positive
B. negative
Which type of change in chromosome composition is illustrated in the diagram?
Answer:
translocation I believe! :)
Explanation:
The nucleotide base sequence of a strand of DNA is TAC-CGG-AGT. Wha
is the sequence of the complementary DNA strand?
Answer:
AUG- GCC- UCA
Explanation:
Hope this is helpful!!
why is prophase the longest phase of mitosis
Answer:
During prophase, which occurs after G2 interphase, the cell prepares to divide by tightly condensing its chromosomes and initiates mitotic spindle formation. The chromatin fibers condenses into discrete chromosomes. The nucleolus also disappears during early prophase.
Answer:
During prophase, which occurs after G2 interphase, the cell prepares to divide by tightly condensing its chromosomes and initiates mitotic spindle formation. The chromatin fibers condense into discrete chromosomes. The nucleolus also disappears during the early prophase. It's the most common/longest phase because of how long it takes to separate the chromatin, connect spindles, and prep for the rest. The cell essentially spends most of it doubling up on your DNA and prepping.
Explanation:
hope this helps have a good rest of your night :) ❤
Describe how DNA and RNA direct cell differentiation. Give an example of how environmental factors may influence cell differentiation.
Answer:
1- DNA: a specific DNA sequence encodes a transcription factor which activates the expression of target genes involved in cell differentiation
2- RNA: short non-coding RNAs may bind to enhancer regions and thus activate the expression of target genes involved in cell differentiation
3- Environmental factor: temperature may control the expression of genes involved in cell differentiation pathways
Explanation:
The deoxyribonucleic acid (DNA) contains the genetic material required to encode proteins. Some of these proteins are transcription factors involved in the activation of diverse signaling pathways, including, for example, cell differentiation and proliferation. On the other hand, microRNAs (miRNAs) are short non-coding RNAs that have the ability not only to repress but also to activate transcription by binding enhancer sequences. The miRNA activation mechanism has recently been discovered. In consequence, some miRNAs may potentially activate the expression of target genes involved in cell differentiation (e.g., c-myc gene). Finally, environmental factors (e.g., nutrient availability, salinity, temperature, etc.) may also activate gene expression and thus control diverse pathways such as cell differentiation, cell proliferation and cell death (apoptosis).
are protein molecules made by ribosomes in the cell
Answer: yes they are
Explanation:
Answer:
Yes that would be Correct.
Explanation:
Some. produces variable traits depending on environmental conditions
Answer:
Some genes produces variable traits depending on environmental conditions
Explanation:
The interaction between some genes and environments confers on individuals different degrees of susceptibility in the appearance of a certain characteristic or in the expression of some variable traits. The trait appears in individuals who have reached a certain threshold, thus the variability in phenotypic expression could be related to the greater or lesser number of predisposing genes in each individual. The differential expression of genes depending on the environment is called the reaction norm, and it refers to genes that can be expressed in a different way in different individuals, depending on the environment in which those individuals develop. The norm of reaction is the set of pathways that a genotype can follow, in all favorable and unfavorable environments, until giving rise to the various possible phenotypes.
Answer:
genes
Explanation:
The table shows the gallons of fuel remaining after a car travels a certain distance in miles.
The change in fuel remaining from one row to the next in the table is
gallon(s).
The change in distance from one row to the next in the table is
mile(s).
The slope of the line that runs through the points given in the table is
.
The slope indicates a
Answer:
The slope shows efficiency of the engine.
Explanation:
The slope indicates that the car travels a certain distance by using a specific amount of fuels. This slope shows efficiency of the engine of that car by using fuel to cover a specific distance. If the car travels more distance and used little amount of fuel so it means that the car engine has high efficiency whereas if the car used more fuel and covers little distance so we can say that it has low efficiency.
a) -0.04 gallon(s).
b)1 mile(s).
c) -0.04 (again)
d) loss of 0.04 gallons of fuel for every 1 mile.
Describe What
happens to a planarian when
it is cut into two pieces?
4. Why does cell division take place in single celled organisms?
A In order for organisms to grow
B.te reproduce and pass along genetic information
C.to enable the organisms to heal injured tissues
D.to make specialized cells for different functions
Answer:
A) In order for organisms to grow.
Explanation:
Tell me if I am wrong. I hope this helps :)
Cell division in a cell takes place in the single-celled organisms to reproduce and pass along the genetic information of the cell. Thus, the correct option is B.
What is Cell division?Cell division is the process of division of cell through which a parent cell divides into two daughter cells with equal genetic content which are similar to the parent cell. Cell division generally occurs as a part of a larger cell cycle in which the cell grows in size and the cell replicates the chromosomal material before it is undergoing cell division.
In the unicellular organisms, cellular division is a significant process through which a unicellular organism undergoes development and result into the formation of a new organism with genetic material which is similar to the parent cell. In the multicellular organisms, process of cellular division helps in maintaining a balance between the genetic material such as the DNA and the RNA contents as well as the nuclear and cytoplasmic contents of the cell.
Therefore, the correct option is B.
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What is the ultimate energy for your food web?
Answer:
The Sun I believe
Explanation:
Which of the following are the possible allele combinations from the gametes of an organism with the genotype of AaBb?
A
AB, only
B
AB and ab, only
С
Aa and Bb, only
D
AB, Ab, aB, and ab
Answer:
AB I'm pretty sure ysv6igscugz hii shivhxhix vhzo xvjz joxpj xj
The possible allele combinations from the gametes of an organism with the genotype of AaBb is AB, Ab, aB, and ab. The correct option is D.
What are alleles?Alleles are variations of the gene. The offspring contain genes or traits from both parents. The same trait is given by both parents, one become dominant and one become recessive.
A gamete is a haploid cell that fuses with another cell to produce offspring, This occurs during fertilization. The female gamete is called ova or egg, or male cells are sperms.
When the genotype that will be produced by the fusion of AaBb is AB, Ab, aB, and ab. The small letters denote the recessive gene and the capital letter denotes the dominant genes.
Thus, the correct option is D. AB, Ab, aB, and ab.
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If the basement membrane was damaged, do you think new epithelial tissue could grow?
Answer: Key words: tissue repair, regeneration, scarring, wound healing, growth factors ... Tissue repair may restore some of the original structures of the damaged tissue ... Initially the new blood vessels are critical in the transport of nutrients and cells to ... the basement membrane is composed largely of nonfibrillar collagen
Explanation:
Describe how ions, water and sugar are obtained and
transported through plants.
6 mark
Answer:
Water and ions are obtained from soil and glucose is obtained from leaves.
Explanation:
Water and ions are absorbed by the plant through roots from the soil whereas glucose is produced in the leaves during the process of photosynthesis. Vascular bundles such as xylem and phloem transported water, ions and glucose within the body. Xylem moves water from roots to the upper water of plants such as leaves, stem etc whereas phloem transported glucose from leaves to other parts of plant.
What are some of the main characteristics of life?
The Characteristics of Life Living things include both the visible world of animals, plants, and fungi as well as the invisible world of bacteria and viruses. On a basic level, we can say that life is ordered. Organisms have an enormously complex organization.
Explanation:
An event that restricts the size of a population such as weather events like drought or flood is likely a
1)density dependent limiting factor
2)density independent limiting factor
3)immigration
4)emmigration
Answer:
The correct answer is - 2) density-independent limiting factor.
Explanation:
Density-independent limiting factors are the factors that cause a change in the size of the population without getting influenced by the density of the population.
Density-independent limiting factors include biotic or abiotic factors with catastrophic conditions such as natural disasters such as floods, earthquakes, drought, fires, and many more.
Drought affects the size of the population by increasing competition in the ecosystem for resources.
a motorcycle is moving at a constant speed of 40 km/h. how long does it take the motorcycle to travel a distance of 10 km.
How Individuals in a species have genetic variation that can be passed on to their offspring
Answer:Genetic variation within a species can result from a few different sources. Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. ... As a result, the tree-colored moths are more likely to survive, reproduce, and pass on their genes
Explanation:
Which statement about the specific immune response is FALSE?
Answer:
yes it is false I'm sorry I I'm wrong but I'm sure it's false
the cells produced during meiosis are?
Answer:
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. During reproduction, when the sperm and egg unite to form a single cell, the number of chromosomes is restored in the offspring.
Explanation:
sourced from nature.com
A gas evolving reaction
Crossing-over does not occur between linked genes.
TRUE
FALSE
Which of the following is the adapted feature of polar bears to live in extremely cold climate?
a. white fur, fat below the skin, keen sense of smell
b. thin skin, large eyes and white fur
c. a long tail, strong claws, white large paws
d. white body, paws for swimming, gills for respiration
(I will give brainleist who give first answer)
Answer:
option a
Explanation:
a polar bear has white fur thick fat and a keen sense of smell like most bears. Just look at a photo of a polar bear and that is clear
Which of the following is a function of the cell wall?
(Choice A)
A
To package proteins
(Choice B)
B
To carry out photosynthesis
(Choice C)
C
To give the cell a rigid structure
(Choice D)
D
To provide energy for the cell
Answer: (Choice C)
To give the cell a rigid structure
Explanation:
It is in its name! Cell WALL (walls provide structure) ! In addition, choice A refers to the ER, choice B refers to cholorplasts, and choice D refers to the mitochondria (The powerhouse of the cell). This leaves choice B as the the only answer!
Hope this helps :)
Answer:
D.
Explanation:
to provide energy for the cell
Compare and contrast
the different types of asexual
reproduction.
Summarize the structure-function relationship of a cell.