Answer:
When a red blood cell is placed in a hypertonic solution, it contracts as water is drawn out of the cell and into the surrounding solution. If the same blood cell is placed in a hypotonic solution, the blood cell grows in size. Blood cells in isotonic solutions do not shrink or swell.
The reason that blood cells change in size when placed in a solution with different salt concentration is due to the osmosis process. Osmosis causes solutions with high concentrations of salt to draw water from areas with low concentrations of salt.
There are some exceptions to this phenomenon. Blood cells can draw water and explode when placed in hypertonic solution on some special occasions. Some diseases affect the structural integrity of blood cells. Also, when human blood cells are exposed to temperatures close to freezing, they can draw water and explode.
Osmosis is an important phenomenon for living systems. The amount of salt in a given solution exhibits a tendency to diffuse through the environment, eventually resulting in equilibrium. In addition to blood cells, the kidneys function through the use of osmotic principles. The kidneys filter an animal's blood to remove excess salt and balance the amount of water
Answer:
It carry oxygen from our lungs to the rest of our bodies. they make the return trip, taking carbondioxide back to our lungs to be exhaled
which of the following correctly describes the induced fit process of how enzymes work
1.the substrate binds and the enzyme split apart prior to actiong on the substrate
2. the substrate binds and the substrate changes changes shape and then substrate is acted upon by the enzyme
3. the substrate binds and is immediatelyacted upon by the enzyme
4. the substrate binds and the enzymes changes shape and then the substrate is acted upon by the enzyme
Answer:
The correct answer would be number 2
Explanation:
The correct description of the induced fit process of how enzymes work is;
The substrate binds and the substrate changes shape and then substrate is acted upon by the enzyme ( 2 )In an Ideal fit model for catalysis, the substrate will bind to a site ( active ) and the substrate bond to the site will change its shape before been acted upon by the enzyme to form a complex ( enzyme- substrate ).
The enzymes ( biological catalyst )does not change shape permanently during the reaction process but it returns to its original shape after the reaction ( end of reaction )
Hence we can conclude that correct description is the substrate binds and the substrate changes shape and then substrate is acted upon by the enzyme.
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CAN SOMEONE CHECKS THIS QUESTION TO SEE IF IM RIGHT THIS IS FOR A MAJOR GRADE!
Deborah has Cystic Fibrosis, a serious genetic defect that interferes with the body's ability to transfer salt and water to and from the body. The defect causes secretions in her body to be thick instead of the normal thin secretions in healthy people. These secretions clog her passageways which can be life-threatening. The following pedigree shows her family in which some individuals are affected by Cystic Fibrosis.
QUESTION: If Deborah marries a man unaffected by Cystic Fibrosis, which of the following describes the possibility that her daughter will be affected by Cystic Fibrosis?
ANWSER=25%
Answer: yeah I think you right
Explanation:
1) A vehicle is traveling at 150 km/h after 3 hours it is traveling 240 km/h.
Was the vehicle accelerating or decelerating and at what rate?
(And this is for science not biology)
Answer:
Accelerating (30km/hr²).
Explanation:
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.
Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.
Mathematically, acceleration is given by the equation;
[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]
[tex]a = \frac{v - u}{t}[/tex]
Where,
a is acceleration measured in [tex]ms^{-2}[/tex]v and u is final and initial velocity respectively, measured in [tex]ms^{-1}[/tex]t is time measured in seconds.Given the following data;
Initial velocity, u = 150km/h
Final velocity, v = 240km/h
Time, t = 3 hours
Substituting into the equation, we have;
[tex]a = \frac{240 - 150}{3}[/tex]
[tex]a = \frac{90}{3}[/tex]
Acceleration, a = 30km/hr²
Therefore, the vehicle is accelerating at the rate of 30km/hr² because its final velocity is greater than its initial velocity.
For deceleration, the final velocity of an object such as a vehicle would be lesser than the initial velocity.
When and why does aerobic respiration occur during cellular respiration in plants?
What is this graph showing?
Answer: It's showing the change of the average temperature.
Explanation:
Answer:
location b is cooler than a but gets hotter than a, goes back down lower than a
Explanation:
Which statements from this comparison of aerobic and
anaerobic cellular respiration are errors? Check all that
apply.
Statement 1
Statement 2
Statement 3
Statement 4
Statement 5
Statement 6
Answer:
Statement 1,3, and 4 are errors.
Explanation:
The other statements are correct.
Plz help
.
17.Base your answer to the following question on the diagrams below of two cells, X and Y,
and on your knowledge of biology
B
Cell X
Cell Y
Identify one process that is carried out in cell that is not carried out in cell X.
Your response:
Answer:
cell y is correct
Explanation:
Which statement best describes the Sun?
A. The Sun reflects the light from the Moon.
B. The Sun is the central planet of the Solar System.
C. The Sun is the closest star to Earth.
D. The Sun revolves around the Earth.
Answer:
C. A. are both correct answers
pls help me pls idk how to do this
Answer:
Form a concave meniscus.
Explanation:
Putting water in a drinking glass, it will try to climb up the sides just a little bit, forming a concave meniscus.When pouring the water out, you have to visualize that the water still prefers to adhere to the glass than fall down under gravity, so if it at all can, that is what it will do.
Certain hormones , such as follicle stimulating hormone (FSH) and luteinsing hormone (LH) affect the reproductive organs of both males and females . Other hormones, known as _______, have significantly higher concentrations in one gender rather than the other. ______ and ______ are the most critical of these, playing a key role in the development of reproductive systems and gender-specific traits. High concentrations of these hormones in the opposite gender offten result in significant complications. _______ stimulates cells to produce testosterone in males, while in females, this hormone signals an increase in ovulation hormones to prepare for pregnancy. ______ stimulates the production of sperm in males, but signals growth of the ovum in females.
FSH, LH, Androgen's, Estrogen, Prolactin, testosterone
Answer:
LH, Estrogen, Prolactin, FSH, testosterone
Explanation:
just trust me :-)
Answer:
LH, Estrogen, Prolactin, FSH, testosterone
Explanation:
did it on usatestprep
both fish seen here are african zebra cichlids they have two color alleles.
Answer:
what fishes are you talking about
How would I change this title up to grab the readers attention?
Title: Measuring the frequency of crossing-over with Sordaria fimicola
About: counting non-recombinant and recombinant sordaria asci to see why crossing over is important for what phase of meiosis
can someone help me please asapppppppp
Answer:
Molecule 3
Explanation:
DNA contains Deoxyribose, Phosphate, and 4 bases: Adenine(A), Thymine(T), Guanine(G), and Cytosine(C)
Molecule three contains Deoxyribose, Phosphate, and Guanine, while the others do not.
RNA contains ribose, which is why Molecule 2 is out of the question.
DNA does not contain glucose, henceforth marking Molecule 1 incorrect.
Molecule 4 may seem correct, but recall that DNA contains Deoxyribose, Phosphate, and a base, in this case Guanine(G). This answer contains no Deoxyribose.
People who have Tay-Sachs disease cannot metabolize some lipids effectively. Tay-Sachs is a recessive disorder. A student used a Punnet Square to determine the probability of offspring inheriting the disease. The results from a Punnet Square are 25% TT, 50% Tt, and 25% tt.
Which conclusion can be made regarding the phenotype of the parents based on these results?
The parents must be TT, Tt
The parents must be Tt, tt
The parents must be TT, tt
The parents must be Tt, Tt
Answer:
The parents must be Tt, Tt
Explanation:
Based on these results, we can conclude that each of the parents will have one dominant (T) and one recessive allele (t). We can prove this by drawing the Punnett square:
T t
T TT Tt
t Tt tt
We can see that the offspring will have the Tt genotype in two cases, the TT genotype in one case, and the tt genotype in one case, as well. Now we need to do some basic math. Two out of four is 50% (Tt - 50%), and one out of four is 25% (TT - 25%, tt - 25%).
This means that the parents must be Tt, Tt.
Which molecule separates the conteins inside of the cell from the contents outside of the cell
Answer:
Thanks
Explanation:
skannalakanslanwlKsoqnw
What are the two sex chromosomes
Answer:
X and Y
these ur answer sir
which of the following identifies this phenomenon and explains how it is formed
Answer:
A phenomenon, in a scientific context, is something that is observed to occur or to exist.
Explanation:
Examples of natural phenomena include gravity, tides, biological processes and oscillation.
Social phenomena are those that occur or exist through the actions of groups of humans. there is also difference between it and the natural phenomenon.
natural phenomenon - all phenomena that are not artificial. phenomenon - any state or process known through the senses rather than by intuition or reasoning.
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hahah you don't know this? can't imagine being that dumb must suck.
PLEASE HURRY I HAVE A COMPLETE MINUTES LEFT ON MY TEST !!
Which of the following does not indicate velocity? *
A.14 m/s SSE
B.40 km/h toward the town square along the main street
C.80 km/h from New York to New Jersey
D.28 km/h
Answer:it’s c
Explanation:
Answer:
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A biologist looks at an organism through a microscope. Which of the following observations tells the
biologist that the organisms is eukaryotic?
O The organisms has a cell membrane
O The organisms is unicellular
O The organism moves with flagella
O The organism has a nucleus
Answer:
O The organism has a nucleus
O The organisms has a cell membrane
Explanation:
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.
The observation that tells the biologist that the organisms is eukaryotic is that organism has a nucleus.
WHAT IS AN EUKARYOTIC ORGANISM?Eukaryotic organisms are those organisms that possess a membrane-bound nucleus in their cells.
Eukaryotic organisms include members of the following kingdom:
FungiAnimaliaPlantsTherefore, the observation that tells the biologist that the organisms is eukaryotic is that organism has a nucleus.
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If a strand of DNA has 10% G, what percent will be T?
What is the most likely outdoor temperature of the scene in the photo?
A. -5K
OB. 30 K
C. 30°C
OD. -5°C
SUBMIT
Answer:it’s d
Explanation:
Answer:
D
Explanation:
I’m a genius
If you remove one species from the Amazon rainforest, will it fall apart?
Not necessarily the food chain may change for some animals because they eat that one species.
What would happen if the Amazon rainforest was cut down?Burning away the Amazon would change millions of living species to end and eliminate their habitats.
Many of these flora, fauna, and other forms of life haven't even been same by science yet.
Thus, the food chain may change for some animals because they eat that one species.
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#SPJ2
Which of the following has the particles with the least kinetic energy
(motion) of it's particles?
Answer:
Explanation:
Kinetic energy is dependent on temperature. The higher the temperature the faster the kinetic energy. You didn't give any answer options but choose the one that is at the highest temperature.
Chapter 3 Study Guide (Connect-ED)
Please answer as much as you can, but try to answer ALL if you can.
1. Use the term sister chromatids in a sentence.
2. Define the word centromere in your own words.
3. The new cell formed by mitosis are called ________.
4. Use the term cell differentiation in a sentence.
5. Define the term stem cell in your own words.
6. Organs are a group of _______ working together to preform a different task.
Answer:
1. Sister chromatids are two identical copies of one chromosome.
2.The place where the sister chromatids are attached.
3. a diploid cell
4. Cell differentiation is when a cell turns from one type to another.
5. a cell that is uniquely able to develop into another.
6. tissues
Proteins and carbohydrates have many functions in the body of an organism. Specific proteins and carbohydrates perform specific tasks. Information about
a protein and a carbohydrate is given below.
Ferritin
Ferritin is a protein containing Iron, which is
needed by all living things. Iron is found
In hemoglobin and in cytochromes, which
function in metabolism. Free iron can
damage proteins, lipids, and nucleic acids.
Glycogen
Glycogen is a carbohydrate that consists of
glucose molecules. It can be hydrolyzed as
glucose as needed by an organism.
How are ferritin and glycogen similar in their primary functions for an organism?
O Both store materials needed by the organism.
Both store energy used by the organism.
Both support the structure of the organism.
O Both store information for the organism.
Answer:
Both store materials needed by the organism.
Explanation:
Proteins and carbohydrates are two biomolecules present in living organisms. They perform varying functions in the body of an organism. According to this question, a specific protein (ferritin) and carbohydrate (glycogen) is described.
Ferritin is a protein molecule containing Iron (Fe). Iron is needed by living organisms as it plays a vital role in organism's metabolism. On the other hand, glycogen is a carbohydrate molecule that is made up of glucose molecules, needed by living organisms.
Based on the description of the two biomolecules provided, they are similar in their primary functions for an organism in the sense that THEY BOTH STORE MATERIALS (glucose and iron) NEEDED BY AN ORGANISM.
The pedigree below shows the occurrence of red-green colorblindness in four generations of a family,
Use the information in the pedigree to answer the following question,
COLORBLINDNESS PEDIGREE
Gaston
KEY
Normal anale
Home Demi
Curreale
(H)
Nom Make
Affected Male
Gewoon
Gawration IV
How many individuals have red-green colorblindness in the four generations shown in this pedigree?
12
ОО
07
4
Answer:
The answer is 4
Explanation:
Bec it is 100%
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An amino acid is to a polypeptide as:
glycogen is to glucose.
testosterone is to a steroid hormone.
a phospholipid is to a plasma membrane.
a nucleotide is to a nucleic acid.
The second option, but please correct me if I'm wrong.
Question 4 (2 points)
Separately sodium and chlorine are dangerous, but together they create
a
b
ООО
a poison
baking soda
salt
C
d
nothing
Answer:
salt is the correct answer
6. A cell recognizes that it has a damaged
mitochondria. Where would this damaged
organelle go to be broken down?
A. Lysosome
B. B. Vacuole
C. C. Chloroplast
D. D. Cell Membrane
Explanation:
Cell death, also called apoptosis, is an essential part of life. As cells become old or broken, they are cleared away and destroyed. Mitochondria help decide which cells are destroyed.