Answer:
In the cell, centrioles aid in cell division by facilitating the separation of chromosomes. For this reason, they are located near the nucleus. Apart from cell division, centrioles are also involved in the formation of cilia and flagella and thus contribute to cell movement.
Explanation:
PLEASE MARK ME AS BRAINLIEST
HELP ME PLEASE I HAVE TO TURN IT IN NOWW !!! Pleaseee
Answer:
I think, (Not 100% sure, but i think its H
Explanation:
True or False? My brain refuses to compute.
Volume is defined as the amount of mass that an object has.
Answer: true
Explanation: it takes up as much space as it has
Which statement about the inheritance of blood types in humans is most likely to be correct?
- Type O is dominant to both Type A and Type B
- Type B and Type O are co-dominant to Type A
- Type A and Type B are co-dominant to Type O
- Types A and O are co-dominant to Type B
Answer:
Type b and a my answer promise copy this now
Explanation:
Facial dimples and free earlobes are both considered dominant human traits. What are the expected phenotypes of the offspring of a female with dimples and free earlobes (DDFf) and a male with no dimples and attached earlobes (ddff)? Group of answer choices
Answer: 50% with dimples and free earlobes and 50% with dimples and attached earlobes
Explanation:
Since both the facial dimples and free earlobes are considered to be dominant human traits, this implies that the expected phenotypes of the offspring with regards to the scenario given in the question would be 50% with dimples and free earlobes and also there will be 50% with dimples and a attached earlobes.
50% with dimples and free earlobes and 50% with dimples and attached earlobes.
Dominant and recessive traits exist when a trait has two different forms at the gene level. The trait that first appears or is visibly expressed in the organism is called the dominant trait. The trait that is present at the gene level but is masked and does not show itself in the organism is called the recessive trait.Since both the facial dimples and free earlobes are considered to be dominant human traits, this implies that the expected phenotypes of the offspring with regards to the scenario given in the question would be 50% with dimples and free earlobes and also there will be 50% with dimples and an attached earlobes.
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Many cities contain green areas, such as the park shown in the image below.
How do such roadless areas make a city more sustainable?
Answer:
Its A.
Explanation:
I just took the quiz trust me :D
Answer:
They provide high-density urban areas with space for outdoor recreation.
Explanation:
I just took the quiz.
Please I need this now
Answer:
D!
Explanation:
8.All of the following are simple machines except one. Please select the choice that is NOT a simple machine. A.Wheel and axel B.Screw C.Dish Washer D.Bike
9. We use simple matchines in our daily life.If i use a knife to cut my sandwitch for lunch,_ _ _ _ _ . A. I've used less force and done less work.
B. I've used more force and done more work.
C.I've used less force and done the same amount of work.
D.A knife is not an example of a simple machine.
Answer: Dish Washer
Explanation:
Phospholipids
are _________
meaning they have hydrophobic and hydrophilic sections
A. Saturated
B. Hydrogenated
C. Glycogenic
D. Amphipathic
Answer:
Answer is question number d)Amphipathic
If RNA strand reads AUG CGU AAU UAU, what did its source DNA read?
Answer:
TAC GCA TTA ATA
and apparently my answer needs to be 20 charcters long
Which example is a way that intercellular Communication occurs
Answer:
A signal is sent from a nerve cell to a muscle cell
Explanation:
I just took this test and this was the correct answer.
Answer: A signal is sent from a nerve cell to a muscle cell
Explanation:
please help its due in a hour!!!!!
Answer:
1. The difference between the normal hemoglobin protein DNA sequence and the sickle cell hemoglobin DNA sequence is a base to base shift, in this case adenine (GAG) to thymine (GTG).
2. The difference affects the amino acid sequence of the protein by replacing glutamic acid (Glu) with valine (Val).
Explanation:
In sickle cell anemia, a change in the DNA nucleotide sequence is observed, where adenine is substituted by thymine, whose expression is the change in the amino acid sequence of globine β, incorporating valine instead of glutamic acid. This represents a molecular mutation - point mutation - by subtitution, which corresponds to missense mutation.
Normal hemoglobin protein in a RBC
DNA CTG ACT CCT GAG GAG AAG TCT
Amino acids Leu Thr Pro Glu Glu Lys Ser
Sickle cell hemoglobin protein in a RBC
DNA CTG ACT CCT GTG GAG AAG TCT
Amino acids Leu Thr Pro Val Glu Lys Ser
When GAG is transcribed to mRNA, the CUC codon is obtained, which codes for glutamic acid. Thymine substitution causes the DNA sequence to change to GTG, which is transcribed as CAC, the codon that encodes the amino acid valine. The change from glutamic acid to valine in β-globin causes an altered hemoglobin, giving the abnormal erythrocytes observed in sickle cell disease.
Drive-reduction theory states that external factors motivate individuals toward certain behaviors. true or false
Answer:
true
Explanation:
ED 2020
Answer:
The answer is false
Explanation:
ED 2021
Which list the layers of the atmosphere from earth surface outward?
Answer:
In order from earth to space it would be troposphere, stratosphere, Mesosphere, Thermosphere, exosphere (ionosphere.)
Explanation:
^
troposphere, stratosphere, mesosphere, thermosphere
what is the cell doing when it's not going through mitosis
Which of the following is NOT part of the cell theory?
A : All life functions are carried on by cells
B: All cells come from cells that are already alive
C : All cells must breath air
D: All organisms are made up of cells
Answer:
C. Because that we had to go over that. That's so easy
What is a Sedimentary Rock?
rock that forms when existing rock changes to a new rock because of heat and pressure
⊝
rock that forms by the process of compaction and cementation of sediments
⊝
rock that forms when melted rock (magma, lava) cools and hardens
Answer:
rock that forms when existing rock changes to a new rock because of heat and pressure
A researcher is studying the effects of caffeine on the rate of sunflower growth to determine if caffeine stimulates sunflower plants to grow taller. What is the null hypothesis for this experiment?
Answer:
A null hypothesis would be that caffeine doesn't stimulates sunflower plants to grow taller.
Explanation:
Null hypothesis: In research methods, the term "null hypothesis" is described as a type of hypothesis that proposes that there's no difference between specific characteristics of a particular data gathering process or population.
Function: The main aim of "null hypothesis" is to prove whether or not a specific test or study is supported and is separated from the researcher's own decisions and values. It is responsible for providing a way to a given study or test and is represented by H0.
which molecule makes up the hereditary material in humans and almost all other organisms
Answer:
DNA
Explanation:
SCHOOL i learned this
Answer:
deoxyribonucleic acid
DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person's body has the same DNA.
I think, u welcome if right, sorry if wrong ;)
Infer If the rock layers shown above hare
not been disturbed, what type of dating
method would help you determine which
layer is oldest? Explain.
Answer:
radiometric dating methods
Explanation:
The oldest rock layer will be at the very bottom, and as time goes on, more layers will form making the top layer the youngest layer and the bottom layer the oldest. This method can determine the amount of radioactive decay of certain elements which can help them make a geologic time scale.
WILL MARK BRAINLIST!!! only for correct answer
NEED CORRECT ANSWER ASAPPP
Answer:
D. 4
Explanation:
Reflection can be defined as a phenomenon which typically involves a change in the direction of a ray of light or waves as it falls on a smooth surface.
Simply stated, reflection occurs when a ray of light or wavefronts bounces off a smooth surface.
From the diagram provided above, the thin beam of light which illustrates reflection is the fourth because as it hit the surface, it bounced back to the medium from which it was originally propagated with.
1 point
This picture shows a cross-section of a blood vessel. The diameter of the
lumen in Figure 10 is 25.0 mm. What is the actual diameter of the lumen of
this blood vessel?
lumen
magnification X8
3.1 x 10-2m
3.1 x 10-3 m
O 2.0 x 10-2 m
2.0 x 10-3 m
Answer:
B. 3.12 x [tex]10^{-3}[/tex] m
Explanation:
From the given picture, it can be deduced that;
the diameter of the image of lumen = 25.0 mm
= 25.0 ÷ 1000
= 0.025 m
And,
magnification = [tex]\frac{diameter of the image of lumen}{actual diameter of lumen}[/tex]
But magnification = 8,and diameter of the image of lumen = 0.025 m.
So that;
8 = [tex]\frac{0.025}{actual diameter of lumen}[/tex]
⇒ actual diameter of lumen = [tex]\frac{0.025}{8}[/tex]
= 0.003125
Actual diameter of lumen of the blood vessel is 3.12 x [tex]10^{-3}[/tex] m.
How would a large increase in the salinity of an estuary most likely affect
the ecosystem of the estuary?
Answer:
Salinity also affects chemical conditions within the estuary, particularly levels of dissolved oxygen in the water. The amount of oxygen that can dissolve in water, or solubility, decreases as salinity increases
Explanation:
(b)
The image below shows part of the surface of a leaf.
0.1 mm x 0.1 mm
The length and width of this piece of leaf surface are both 0.1 mm
Calculate the number of stomata per mm of this leaf surface.
Explanation:
You didn't attach a picture so i'll just explain how to find the number of stomatas/mm^2.
first you find the surface by multiplying the length by the width
0.1*0.1=0.01mm^2
now you count the numer of stomatas in the picture
in0.01mm^2 you have.........................x stomatas
in 1mm you have ...............................y stomatas
y=100x
Suppose scientists determine that a set of genes is significantly more prevalent in murderers than in the population at large. Would that mean that murderers are not at fault for what they do? Why or why not?
Answer:
No
Explanation:
That a gene is common to all murderers in the population does not mean that murderers are not at fault for their crimes.
Having a gene that correlates with murder just gives one a genetic tendency but the environment and personal choice still have to influence the decision to commit the crime. In other words, one might have the genetic tendency to commit murder but still has to be environmentally enabled and the ability to choose to either do it or otherwise. Nature, nurture, and personal choice would have to synergistically work together for the phenotypic expression of such a gene.
A fox population used to have white fur. In recent years, tan and light
brown colors started to appear in the population.
Which option would cause such a change?
Answer:
Natural Selection or Adaptation
Explanation:
Because they change their fur color so predators cant find them as good
What are the different types of Adaptations? Give examples of each.
Give an example for natural selection occurring based on food sources
Answer:
Behavioural-made by an organism that helps it to survive/reproduce.
Physiological-a body process that helps an organism to survive/reproduce.
Structural -a feature of an organism's body that helps it to survive/reproduce
Explanation:
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What is the importance of the amniotic egg?
Answer:
The amniotic egg was an evolutionary invention that allowed the first reptiles to colonize dry land more than 300 million years ago. Fishes and amphibians must lay their eggs in water and therefore cannot live far from water. But thanks to the amniotic egg, reptiles can lay their eggs nearly anywhere on dry land.
Hopes this helps :)
Which recent discovery led to a new understanding of how genetic mutations increase the risk of cancer? double helix structure of DNA BRCA1 and BRCA2 genes nucleic acid monomers formation of tumor suppressor proteins
Answer:
BRCA1 and BRCA2 genes
Explanation:
The BRCA1 and BRCA2 genes are tumor suppressor genes that encode breast cancer susceptibility proteins involved in repairing double-strand DNA breaks (DSBs) by the mechanism of homologous recombination. This mechanism uses the sister chromatid of the homologous chromosome as template for repairing DSBs. It has been shown that mutations in BRCA1 and BRCA2 genes alter the molecular mechanism of homologous recombination DNA repair, thereby mutations are not repaired appropriately and persist in the DNA of tumor cells.
(B.) BRCA1 and BRCA2 genes
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How might the fennec fox's population suddenly Increase? How might this affect the ecosystem?
Answer:
If rabbits population (prey of fennec foxes) suddenly increase as well. The other prey of the fennec foxes would shrink in population because there would be more fennec foxes to eat them. This would at some point even out and the ecosystem would go back to normal.
Alzheimer's disease has some lifestyle factors because
A. everyone can contract it in their lifetime
B. it can be influenced by nutritional choices
C. up until now there is no known cure for it
D. it can be contracted through germs
Answer:
C
Explanation: