Answer:
B.) The chromosome carrying this gene changes shape during cell reproduction
Explanation:
According to this question, Sickle cell anemia is a genetic condition that occurs when the HBB gene that codes for haemoglobin protein undergoes a point mutation. Mutation alters the genetic sequence of a gene.
This mutation expresses itself when the chromosome 11 carrying the mutated gene changes shape during cell reproduction. Normal Red Blood Cell has a disc-shaped structure, however, this mutation causes a change in shape of the chromosome involved.
Rewrite the following incorrect statement with the correct answer:
Endogenic forces work on the surface of the earth.
Explanation:
Endogenic forces work towards the middle of the earth...creating pressure causing cracks, pits..
Which of the labeled structures is an adaptation that is primarily responsible for helping a paramecium control its water balance?
Paramecium diagram
A. Structure A
B. Structure B
C. Structure C
D. Structure D
Structure D , The term "contractile vacuole" refers to this structure. The vacuole gathers extra water from the cytoplasm and contracts to release it. As a result, paramecium doesn't swell and explode in hypotonic liquids.
Why are contractile vacuoles necessary for organisms?Specialized contractile vacuoles control the amount of water in cells. Its spherical form allows it to gather extra cell fluid and empty it outside. It is essential for preserving the osmotic pressure inside the cell. Protists are eukaryotes with only one cell and are found in wet and aqueous habitats.
The name "contractile vacuole" refers to what?As its name implies, the contractile vacuole expels water from the cell by contracting. The contractile vacuole periodically expands (collecting water) and contracts (releasing water). Several seconds are required for one cycle, depending on the species .
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Hummingbirds have long, slender beaks that allow them to feed on the nectar of deep-throated flowers. One hummingbird is born with a short, stout beak as a result of a genetic mutation. What is the most
likely result?
A
This hummingbird will eat insects and spiders instead of nectar.
B В
This hummingbird will build a bigger nest than other hummingbirds.
С
This hummingbird will not live as long as other hummingbirds.
OD
This hummingbird will attract more mates than other hummingbirds
Answer:
C the humming bird will not live as long as the others
Explanation:
It won't be able to gain sufficient resources/ necter like the others hence it will most likely have poor body condition and will not live as long.
One hummingbird is born with a short, stout beak as a result of a genetic mutation, the humming bird will not live as long as the others.
What is mutation ?Mutations are defined as the change in the nucleotide sequence of genetic material due to different process such as substitution, deletion or insertion of the nucleotides leading to changed or faulty protein.
The type of mutations leads to the early and delayed termination of the transcription of a gene, mutation of a single nucleotide leads to termination of transcription otherwise called as nonsense mutation.
If a mutation shows no effect on the protein, known as the silent mutation.
It won't be able to gain sufficient resources/ necter like the others hence it will most likely have poor body condition and will not live as long.
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Which has the highest density?
A. water at 0°C
B. water at 4°C
C. water at 6°C
D. water at 8°C
For traits controlled by a single genetic locus, dominant phenotypes are expected to occur at a frequency of approximately 75%, in a randomly mating population.
true or false and why
Answer:
True.
Explanation:
The dominant phenotypes are expected to occur at a frequency of approximately 75%, in a population because of its dominant nature which allows them to appear in the physical structure of the organisms. In most of the offspring, the dominant allele shows their characteristics in the population whereas the recessive allele are hidden in that organisms and we can't see them in the physical appearance of the organisms.
Provide at least three ways in which Mountains can be impacted by either natural processes or human processes, including both constructive and destructive processes.
HELP! I Will Pick brainliest
Answer:
Chemical & Mechanical Weathering
Erosion
Explosive Volcanic Eruptions
Explanation:
PLEASE ASNWER AS FAST AS POSSIBLE.
Suggest and explain how the percentage of oxygen is different compared to individual with diet low iron intake for several years.
Answer:
Iron deficiency leads to low hemoglobin levels, and therefore oxygen levels are lower than normal
Explanation:
Hemoglobin is a protein found in red blood cells whose main function is to transport oxygen to the tissues. Anemia is a condition caused by iron deficiency, which is a micronutrient required for red cells to produce hemoglobin. When hemoglobin levels in red blood cells are low due to iron deficiency (anemia), then levels of oxygen in the blood are also lower than normal. In consequence, iron deficiency may cause that cellular tissues don't have sufficient oxygen to carry out their functions.
How does conjunctivitis impact the community ?
Answer:
This is an epidemic form of conjunctivitis which almost always affects both eyes. The patient may complain of a foreign body sensation, with watering, discharge, redness, and swelling of the lids. They may also complain of the eyes being sensitive to light, with blurred vision.
How would an increase in the global surface air temperature affect the
water cycle?
Answer:
The answer is b because with more air the clouds would get more water and when the clouds get full it will rain and may cause a flood
Explanation:
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Answer :
Climate change intensifies this is cycle because as air temperature increases, more water evaporates into the air. Warmer air can hold more water vapour, which can lead to more intense rainstorms, causing major problems like extreme flooding in coastal communities around the world.
Scientists who study taxonomy are called (1 point)
O paleontologists.
O zoologists
O systematists
O botanists.
Answer:
systematists
Explanation:
I just took the Test
Scientists who study taxonomy are called systematists.
Systematics refers to the field whose objective is to study the diversification patterns of living organisms from different taxonomic groups (e.g., plants, animals, bacteria, etc).Systematists are scientists that classify life forms according to evolutionary relationships, which are visualized as evolutionary trees.Systematists specialize in classifying and sorting biological information about plants and animals and group them according to their patterns of variation.In conclusion, scientists who study taxonomy are called systematists.
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How is gamete formation different in females than in males?
a) Males produce four functional sperm while females produce only one functional egg.
b) Males produce only one functional sperm while females produce four functional eggs.
c) Males produce four genetically identical sperm while females produce four genetically different eggs.
d) Males produce four genetically different sperm while females produce four genetically identical eggs.
4
A floor turtle can use the following instructions:
INSTRUCTION
MEANING
FORWARD n
Move n mm forward
BACKWARD n
Move n mm backward
LEFT
Turn left t degrees
RIGHT
Turn right t degrees
PENUP
Lift the pen
PENDOWN
Lower the pen
REPEAT n
Repeat the following instructions n times
END REPEAT
Finish the REPEAT loop
Answer:
A floor turtle can use the following instructions: INSTRUCTION FORWARD n BACKWARD LEFT RIGHT PENUP PENDOWN REPEAT MEANING Move n mm forward Move n mm backward Turn left t degrees Turn right t degrees Lift the pen Lower the pen Repeat the following instructions n times Finish the REPEAT loop END REPEAT 45° 100 mm start Complete the set of instructions to draw this shape by filling in the blank lines. PEN DOWN 90 REPEAT FORWARD LEFT 6 A student wishes to use floor turtle to draw this shape: Name and explain the meaning of three instructions that the turtle graphics software would need to contain in order to draw the shape. 20 40 10 45 85 Instruction 1 Meaning Instruction 2 Meaning Instruction 3 Meaning [6] E.
PLEASE HELPPP!!! Why would scientists want to selectively breed organisms?
Answer:
all are correct. hope this helps
Explanation:
Answer:
D. All are correct.
Explanation:
Selective breeding allows producers to select and breed parent organisms with desired traits to produce offspring with more desirable characteristics. This process creates offspring who are genetically superior to the parent organisms, thus improving plants and animals with each generation.
The combination of fibers and ground substance in fluid connective tissue is known as
A) ground substance
B) fat
C) cytosol
D) plasma
which sequence correctly list how chromosomes are packed smallest to largest
chromosomes, chromatic, DNA and protein
DNA and protein, chromatic, chromosomes
DNA and chromatic, protein, chromosomes
Answer:
The answer is the second option.
Answer:
I feel like the answer is c
I'm not too sure
Why are electrical cords often covered with rubber
Answer:
Explanation:
Most electrical wire is covered in a rubber or plastic coating called insulation. ... The purpose of insulation covering the metal part of an electrical wire is to prevent accidental contact with other conductors of electricity, which might result in an unintentional electric current through those other conductors.
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Answer:
T-protease would be active in the stomach and W-protease would be active in the intestines.
Explanation:
Acidic pH's are considered to be less than 7 and 7 is considered neutral. Due to this we know that T-protease is more active in more acidic pH's meaning it would be most active in the acidic stomach.
What is a light-year?
Answer:
light year is a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 ×10^12 km (nearly 6 million million miles).
Answer: A light year is a unit of astronomical distance used to measure the distance light travels in one year.
8) "Strip-mining" operations often "begin" with which of the following?
10 points
A) deforestation
B) urbanization
C) desertification
D) reclamation
Answer:
C
Explanation:
C C C C C
How do Earth's systems respond to change?
Explanation:
It responds to big changes including changes in output from the sun, plate tectonic movements, and random asteroid impacts from space.
What is the function of ATP in living things? 1
Explanation:
The function of ATP IN living organisms is that ATP is stored in all the cells for energy of all cells.
ATP captures the chemical energy by digesting food particles, breaking it down to deliver into the
cell process enough to disperse ATP throughout the bloodstream for energy to every cell of the body, to work properly in digestion, releases it to fuel all cells in the body, this is the last process for fuel in the cell system in the digestive process..
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you are asked to prapare a drink that is a heterogeneous mixture.what would you prapare?
a.instant coffee and hot water
b.warm milk
c.soft drinks
d.orange juice with pulp
HELP
Compare and contrast prokaryotes, eukaryotes, and viruses. Be as detailed as possible. Include 2 examples of each type of cell and 2 examples of viruses.
1 or 2 pg
please
Answer:
Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning its DNA is surrounded by a membrane), and has other membrane-bound organelles that allow for compartmentalization of functions.
Answer:
Microorganisms and all other living organisms are classified as prokaryotes or eukaryotes. Prokaryotes and eukaryotes are distinguished on the basis of their cellular characteristics. For example, prokaryotic cells lack a nucleus and other membrane‐bound structures known as organelles, while eukaryotic cells have both a nucleus and organelles. Prokaryotic and eukaryotic cells are similar in several ways. Both types of cells are enclosed by cell membranes (plasma membranes), and both use DNA for their genetic information.
Prokaryotes include several kinds of microorganisms, such as bacteria and cyanobacteria. Eukaryotes include such microorganisms as fungi, protozoa, and simple algae. Viruses are considered neither prokaryotes nor eukaryotes because they lack the characteristics of living things, except the ability to replicate (which they accomplish only in living cells). Viruses - Corona virus, HIV.
Give two examples of homeostasis in the digestion process?
Answer:
Two examples may be
1. Acid and Base balance
and/or
2. Fluid volumes
Explanation:
In Drosophila, the genes for eye color, wing shape, and wing length are located on chromosome II. Purple eyes (pr), arc bent wings (a), and vestigial wings (vg) are the mutant forms of the wild type traits red eyes, straight wings, and long wings, respectively. You've discovered some data in your genetics laboratory which indicates that the distance between vg and pr is 12.5 m.u., the distance between a and pr is 44.7 m.u., and the distance between a and vg is 32.2 m.u. what is the chance of a double crossover between these three genes
Answer:
The expected double recombinant frequency = 0.0402 = 4.02%
Explanation:
Available data:
genes for eye color, wing shape, and wing length are located on the same chromosomePurple eyes (pr) is the mutant form of the wild type traits red eyes (pr+)Arc bent wings (a) is the mutant form of the straight wings (a+)Vestigial wings (vg) are the mutant forms of the long wings (vg+)the distance between vg and pr is 12.5 m.uthe distance between a and pr is 44.7 m.uthe distance between a and vg is 32.2 m.u→ Two genes that are very close will have a few recombination events and are strongly bounded.
→ The map unit is the distance between the pair of genes for which every 100 meiotic products, one of them results in a recombinant one.
1) First, we need to know their order in the chromosome, and to do so, we need to compare the distances between them.
The most distant pair is a-pr
----a---------------------------------------------pr---
║-------------------44,7 MU-------------║
From gene a to vg there are 32.2 MU
----a-----------------------------vg--------------pr---
║-------------------44,7 MU-------------║
║----------32.2 MU------║
Finally, de distance from vg to pr is 12.5 MU
----a-----------------------------vg--------------pr---
║-------------------44,7 MU---------------║
║----------32.2 MU------║--12.5 MU--║
We can name region I to the distance between a-vg, and region II to the distance between vg-pr.
2) To calculate the recombination frequency, we have to know that 1% of recombinations = 1 map unit = 1cM. And that the maximum recombination frequency is always 50%.
1 MU -----------1% of recombination
32.2 MU -----X = 32.2 % of recombination
12.5 MU-------X = 12.5 % of recombination
3) The expected double recombinant frequency = recombination frequency in region I x recombination frequency in region II.
The expected d. recombinant frequency = 32.2% x 12.5% = 0.322 x 0.125
The expected double recombinant frequency = 0.0402 = 4.02%
please help me i have to have this finished by 12:35 at the most
help ....................
Which term identifies a group of cells that work together to perform a similar function? Molecule Organism Organ Tissue
Answer:
Explanation:
Nucleus
Answer:
Tissues
Explanation:
There are four different types of tissues which are connective, epithelial, muscle and nervous. They all work together to perform similar functions. There are more than one tissues in organs that would work together.
explain why the rose plant needs to attract insects?
Answer:
The rose needs to attract insects for pollunation
Explanation:
What are the Negative impacts of genetically modified crops
answer:
the use of some gm crops can have negative impacts on non-target organisms and on soil and water ecosystems.
explanation:
for example, the expansion of gm herbicide-tolerant corn and soy, which are twinned with herbicides, has destroyed much of the habitat of the monarch butterfly in na.
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