Sickle cell anemia is caused by a mutation that alters red blood cells. HELP ME PLZZ!!!
Answer:
In Sickle Cell Anemia:
Mutation that occurs in DNA is due to the substitution of thymine base by adenine base. Change in mRNA consists of a change of the GAA codon to GUA, which codes for a different amino acid. The change that occurs in the synthesized protein is the substitution of glutamic acid by valine, the consequence of which is the structural alteration of this protein.Explanation:
Sickle cell anemia is a disease that is transmitted from parent to child in an autosomal recessive inheritance pattern. It is due to a mutation that is capable of altering the shape of the erythrocyte, as well as its ability to circulate and carry oxygen.
First, a puntual genetic mutation occurs, where the sequence of DNA bases that determines the synthesis of the hemoglobin β-chain, by suffering the substitution of thymine by an adenine: CTT → CAT.The transcription of this altered sequence to mRNA results in the change of the GAA codon to GUA, which encodes a different amino acid.Once the β-chain is synthesized, in its structure there is a change in the amino acid sequence, due to the substitution of glutamic acid by valine.The interaction of valine with the other amino acids of the protein promotes a structural change, responsible for the deformation of the red blood cell that characterizes sickle cell anemia.
Which two statements describe the ocean floor?
A. There are long underwater mountain chains.
B. There are many active undersea volcanoes.
C. It is covered with underwater forests of tall trees.
D. It has only smooth surfaces between continental shelves.
A and B is ✓ Correct
Answer:
you answered the question you asked your self lol
Answer:
Explanation:
a and d i think
please? someone help me with this. Is the land abiotic or biotic?
Answer:
Land is abiotic because it is not living.
Explanation:
A codon on a mRNA strand contains the sequence of bases UCC. What would be the sequence of bases on the anticodon? 1, TGG. 2,AUG. 3,AGG. 4,UCC.
Answer:
3. AGG
Explanation:
When doing mRNA, Adenine always pairs with Uracil, but when you have Thymine you pair it with Adenine. But thymine never pairs with Uracil.
so on here, you have UCC and the opposite would be
AGG.
Which diagram best illustrates why theories can be changed or replaced?
Answer:
I still think it's a last one
Answer: the second one
Explanation: I took the quiz loll
importance of wetlands
Is pumice a mineral, a rock, or neither?
This is science
Answer:
rock
Explanation:
pumaspumas is a powder or dust form is a volcanic rock that consists of highly vascular rough textured volcanic glass and may or may not contain crystals it is typically light colored
Answer:
Pumice is an igneous rock.
Explanation:
Question 13
Which of the following functions can be attributed to lipids? Select all that apply.
O A) membrane and barrier formation
DB) information storage
C) energy storage
D) building blocks for cholesterol and other hormones
E) catalyzing biological reactions
Answer:
The Answer is C
Explanation:
The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes. Lipids have applications in the cosmetic and food industries as well as in nanotechnology.
Energy storage
What is lipid ?
Any of the large group of natural substances that do not dissolve in water, such as natural oils and waxes.
What are functions of lipid?
Within the body, lipids function as an energy reserve, regulate hormones, transmit nerve impulses, cushion vital organs, and transport fat-soluble nutrients. Fat in food serves as an energy source with high caloric density, adds texture and taste, and contributes to satiety.
To learn more about lipid here
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In a certain plant, the allele for red flower color (R) is dominant over the allele for white flower color (r). A cross is performed between a plant with red flowers and a plant with white flowers. The offspring are 47 plants with red flowers and 51 plants with white flowers. What are the genotypes of the parent plants?
Answer:
Rr and rr
Explanation:
The genotypes of the parents would be heterozygous red (Rr) and true-breeding white (rr).
Since the allele for the red flower color (R) is dominant over that of the white flower color (r), for a cross to produce both red and white flower color plants, the red parent must be heterozygous (Rr) and the white parent true-breeding (rr).
Rr x rr
Rr Rr rr rr
Rr = red
rr = white
If the red parents is true-breeding
RR x rr
Rr Rr Rr Rr
All their offspring would be red without any white flower color.
Hence, the genotypes of the parent are Rr and rr.
Why does oxygen from our lungs diffuse into the bloodstream?
Answer:
so we can breath duh
Explanation:
Which types of cells would most likely be able to carry out anaerobic respiration? Check all that apply.
bacteria
fungi
brain
muscle
skin
Answer:
Bacteria fungi and muscle
Explanation:
I did the edge unit rev
A particular single-celled organism uses radiant energy to fix carbon as sugars. This organism generates ATP by breaking down sugars through a process that uses oxygen. Based on this information, how should this organism be classified? A. aerobic heterotroph B. aerobic autotroph C. anaerobic heterotroph D. anaerobic autotroph
Answer:
D. anaerobic autotroph
Explanation:
Would it be better to use 5 or 50 rose plants in each group?
Choose one answer.
a. Five
b. Fifty
Answer:
50
Explanation:
sorry if its wrong;)
Answer:
5 but i answerd it all ready yesterday
Explanation:
can anyone help me with this question? whoever answers first gets brainliest!
Answer:
A is the most likely
Explanation:
EMERGENCY!!!!! Pregnant female bears do not go into deep hibernation in the winter like other bears. why might this be a physiological adaptation for mother bears?
a. the pregnant bear's metabolic rate would rise too high, and the fat stores would be gone quickly
b. the fat stores that bears building up in the summer and fall would be wasted on a pregnant bear
c. pregnant bears need to maintain a higher metabolism that nonpregnant bears
d. pregnant bears are unable to build up fat stores during the summer and fall moths.
Answer:
c. pregnant bears need to maintain a higher metabolism that nonpregnant bears
Explanation:
I just did it
Which of the following is correctly distributed?
A. 1s² 2s² 2p⁶ 3s¹ 3p¹
B. 1s² 2s² 2p⁵ 3s²
C. 1s ² 2s² 2p⁵
D. 1s² 2s¹ 2p⁶
I need the answer now plss help ( I will mark you a brainliest just answer it correctly)
Answer:
c
Explanation:
Answer:
Its b
Explanation:
bc a c d make no sense
have a nice day god bless u and ur fam
PLEASE HELP ME! ILL GOVE BRAINLIEST
What aspect of electricity did Ben Franklin’s experiment demonstrate?
Answer:
By conducting the kite experiment Franklin proved that lighting was an electrical discharge and realized that it can be charged over a conductor into the ground providing a safe alternative path and eliminating the risk of deadly fires.
Explanation:
Name those blood vessels help plzzz sheb quick i’ll put branloest
Answer:
Y = Aorta.
W = inferior Vena cavae.
Z= Pulmonary vein
X = Pulmonary organ.
Explanation:
Hope this helped have an amazing day!
it is a test please help
Which organ is not connected to its system?
a) Spinal cord – Nervous system
b) Large intestine – Digestive System
c) Testes – Reproductive system
d) Kidney – Circulatory system
Answer:
d.Kidney
Explanation:
kidney is urinary system
What types of cells do fibroblasts make?
How did Robert Hooke come up with the term "cell"?
Answer:
the boxlike cells of cork reminded him of the cells of a monastery
Plz help last question on my test
50.Which type of cell must be produced more frequently than the other types?
1)brain cells
2)red blood cells
3)muscle cells
4)liver cells
5)stomach lining cells
Answer:
muscle cell is produced fast
Answer:
2
Explanation:
red blood cells
hey when you are done with your test notify me we need to talk
What type of energy change occurs as a match burns?
A.
There is an increase in total energy.
B.
Chemical energy changes to light and heat energy.
C.
Kinetic energy changes to potential energy.
D.
There is a decrease in kinetic energy.
Answer:
A
Explanation:
It has kinetic energy and chemical energy too, so A just sums up of those two.
Write down the function of motor nerve.
Answer: Motor nerves are those nerves those that carry the messages in the form of a response from the brain or the spinal cord to other parts of the body such as the muscles and glands. They are responsible for carrying the information from the CNS to the PNS.
Explanation:
I will mark brainest if you get it right
A photovoltaic cell captures ____ to be used for power.
A. Wind
B. Water
C. Coal
D. Sunlight
Answer:
D. Sunlight
Explanation:
Answer:
santa claus
Explanation:
What is the answer to this?
Answer:
Nucleic Acids
Explanation:
Because I just know
35. This graph shows the rate of bacteria reproduction over a two-hour period. In just three hours, one bacterial cell will have produced over 2000 new bacteria as a result of asexual reproduction. Explain what could be true about the offspring.
Which of the following provides the best example of selective breeding?
A. Scientists have noted that different varieties of birds on different Islands have beaks that are suited to the birds available food,
B. Leopard seals captured in Antarctica have thicker layers of blubber than harbor seals captured in the Pacific Ocean
C. Hummingbirds have a long, narrow beak that enables them to reach food in the deepest parts of a flower
D. Racehorses that run fastest are the ones that are allowed to produce offspring, leading to faster racehorses.
Answer:
c
Explanation:
because yes
3. Tupai is part of the Leeward Islands. For years, people were not
allowed on this island. Recently, it has been opened to tourists. How
will increased development and human interactions likely affect
succession on this island?
A. Lichens will increase quickly, creating a climax community.
B. Mature trees will decrease, creating a pioneer community.
C. Biodiversity will decrease as the number of species decreases.
D. More diverse species will move into the area as biodiversity increases.
Answer:
C. Biodiversity will decrease as the number of species decreases.
Explanation:
When Tupai which is part of the Leeward Islands is opened up to tourists, the need for infrastructural development will arise in the area.
For instance, there will be a great need to build hotels and resorts for the tourists, hospitals to handle medical emergencies, houses for residents that may move into the area in order to provide essential services to the visiting tourists.
All these will further decrease the biodiversity in the area as entire communities of organisms will be displaced and ecosystems destroyed in the wake of infrastructural development. This will ultimately lead to a decrease in biodiversity and number of species.
Is a coconut a vegetable or fruit?
Answer: Answer. Botanically speaking, a coconut is a fibrous one-seeded drupe, also known as a dry drupe. However, when using loose definitions, the coconut can be all three: a fruit, a nut, and a seed. Botanists love classification.
Explanation: