Answer:
c
Explanation:
plz make me brainliest
In actuality, the DNA sequence of the human genome is NOT random. Some sequences, including some very large sequences, are repeated many times throughout the human genome. Write two ideas you have for how this fact complicates the use of CRISPR gene-editing technology in humans.
Answer:
repeated DNA sequences decrease the target specificity of the CRISPR-Cas system, and may lead to off-target effects
Explanation:
The CRISPR-Cas system is a versatile and powerful tool for gene editing. This gene-editing tool consists of a single guide RNA (sgRNA) that guides the Cas endonuclease protein to the appropriate genomic locus, where Cas generate a double-strand break in the DNA and thus induces DNA repair either by Non-homologous end joining (NHEJ) or Homologous Recombination (HR) repair pathways. The sgRNA consists of a 17-20 nucleotide sequence which is complementary to the target DNA, this sequence is called crispr RNA (crRNA). The existence of repeated DNA sequences hampers the specificity of the CRISPR-Cas tool because a particular sgRNA is able to guide Cas9 to different genomic loci that have the same (repeated) nucleotide sequence complementary to the crRNA. In consequence, repeated DNA sequences may lead to undesired off-target effects, i.e., unintended cleavage (and therefore unintended mutations) at untargeted genomic sites.
Select all statements that correctly explain the structure and role of sugar molecules in organisms.
Answer:
where are the statements of it??
Explanation:
How does global warming affect earth’s troposphere?
Answer:
Most of the world's weather originates in the troposphere, a second scientist tells Carbon Brief, meaning that changes to seasonal temperatures could be affecting the likelihood of extreme weather events, such as flooding and drought.
The ______ system plays the key role in allowing organisms to have offspring and pass on their unique genetic information.
A.
cardiovascular
B.
musculoskeletal
C.
nervous
D.
reproductive
Testing Specific Functions of the Cranial Nerves
Match the disorder listed in column A with the cranial nerve associated with that disorder listed in column B.
Column A
1. blindness
2 corneal reflex is absent (2 answers)
3. difficulty turning the eye inferior and lateral
4. inability to laterally rotate the eye hypoglossal
5. inability to maintain balance and equilibrium
6. inability to pucker the lips
7. inability to smell
8. inability to taste bitter (sensed by posterior taste buds of the tongue)
9. pupillary reflexes are absent (2 answers)
10. soft palate droops on one side (2 answers)
11. tongue deviates to one side when it is stuck out of the mouth
12. weakness in elevation of the scapula
Column B
a. abducens
b. accessory (spinal accessory)
c. facial
d. glossopharyngeal
e. oculomotor
f. olfactory
g. optic
h. trigeminal
i. trochlear
j. vagus
k. vestibulocochlear
Answer: There are 12 pairs of cranial nerves originating from the nuclei in the inferior surface of the brain, some sensory, some motor and some mixed. The following disorders are associated with the cranial nerves as arranged below with its explanations.
Explanation:
1.) Blindness: This is caused by damage to the Optic nerve ( that is, cranial nerve II ).
2.) Corneal reflex is absent: This is caused by damage to trigeminal and facial nerve ( that is, cranial nerve V and VII).
3.) Difficulty turning the eye inferior and lateral: This is caused by damage to the abducent ( that is, the cranial nerve VI).
4.) Inability to laterally rotate the eye: This is caused by damage to hypoglossal nerve( that is, the cranial nerve XII)
5.) Inability to maintain balance and equilibrium: This is caused by damage to the
vestibulocochlear nerve ( that is the cranial nerve VIII)
6) Inability to pucker the lips: This is caused by damage to facial nerve.
7.) Inability to smell: This is caused by damage to olfactory nerve ( that is, cranial nerve 1)
8.) Inability to taste bitter (sensed by posterior taste buds of the tongue): This is caused by damage to the Vagus nerve ( that is , cranial nerve X).
9.) Pupillary reflexes are absent: This is caused by damage to oculomotor and optic nerve.
10.) Soft palate droops on one side: this is caused by damage to vagus and glossopharyngeal nerve.
11.) Tongue deviates to one side when it is stuck out of the mouth: This is caused by damage to hypoglossal nerve.
12.) Weakness in elevation of the scapula: This is caused by damage to accessory (spinal accessory nerve.)
What is water current so
how would I order this.
Answer:
I hope this helps! I'm sorry if anything is wrong
Explanation:
Drosophila geneticists have isolated many mutations that modify position-effect variegation. Dominant suppressors of variegation [Su(var)s] cause less fre- quent inactivation of genes brought near heterochro- matin by chromosome rearrangements, while dominant enhancers of variegation [E(var)s] cause more frequent inactivation of such genes.
A. What effects would each of these two kinds of mutations have on position-effect variegation of the white gene in Drosophila (that is, would the eyes be more red or more white)?
B. Assuming that these Su(var) and E(var) mutations are loss-of-function (null) alleles in the corresponding genes, what kinds of proteins do you think these genes encode?
Answer:
A. As it is given that Su(var) dominant suppressors of variegation mutant allele causes lesser white patches and more red patches in eyes as it is an inhibits or inactivates of PEV. If the Drosophila were heterozygous for the dominant enhancers of variegation E(var) mutation, there would be less red patches and more white patches.
b. Su(var) 1 gene encodes for the proteins that assist in the spreading of heterochromatin by inhibits the PEV which will be lost by null mutations while E(var)1 gene encodes for the proteins that restrict the spreading of heterochromatin by loss of function mutation
Asexual reproduction from a single parent is based on what?
Answer:
The parent cell simply divides to form two daughter cells that are identical to the parent. Asexual reproduction produces offspring that are genetically identical to the parent, whereas sexual reproduction produces a similar, but genetically unique offspring.
Explanation:
hope you like my ans
Answer:
The parent cell simply divides to form two daughter cells that are identical to the parent. Asexual reproduction produces offspring that are genetically identical to the parent, whereas sexual reproduction produces a similar, but genetically unique offspring.
Explanation:
explain what would likely happen if there were no shrimp in the close ecosystem
Answer:
It greatly affect population of fish.
Explanation:
If there were no shrimp in the close ecosystem then many fishes die due to lack f food because shrimp is the food of many small and large fishes. They also play a great role in protection of fish's skin by eating parasite, bacteria and fungi present on their skin so it also act as scavengers so if these shrimps are not present many fishes die due to various diseases and the ecosystem would be disturb.
4 What is the relationship between Domains and Kingdoms? (1 Point) -Domains are further broken down into Kingdoms.
- Kingdoms include the prokaryotic cells and Domains do not.
-Kingdoms are larger groups of organisms and contain Domians
-Domains are specific to Genus of living things and Kingdoms are Species of living things.
Answer:
domain are further broken down into kingdom
Explanation:
A domain is a taxonomic category above the kingdom level. The three domains are: Bacteria, Archaea, and Eukarya, which are the major categories of life. ... A kingdom is a taxonomic group that contains one or more phyla.
Cellular respiration extracts energy from what ?
Answer:
ATP, from glucose.
Glucose is from the food we eat.
Label each region of the body with the function of the epithelium that is found there.
Absorption and
digestion
Olfactory mucosa
Filtration
Protection and
sensation
Sensation
For the following:
Skin
Glomerulus epithelium
Digestive epithelium
Olfactory mucosa
The small intestine serves as the site of both digestion and absorption. The small intestine contains a straightforward columnar epithelium.
The epithelium's tissue
The human body is made entirely of epithelial tissue. It supports a variety of bodily processes, including defense, secretion, absorption, and filtration.
A unique type of tissue called epithelial tissue can be found in the skin's outer layer.
The small intestine serves as the site of both digestion and absorption. The small intestine contains a straightforward columnar epithelium. The term "digestive epithelium" is sometimes used.
The pseudostratified columnar epithelium is present in the human olfactory mucosa. The skin serves as protection and contains epithelial tissue. The kidney contains glomerulus epithelium, which aids infiltration.
Therefore, the small intestine is where digestion and absorption occur.
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is comparing a typical uncontained Influenza outbreak with the current quarantine/social distancing Coronavirus outbreak a legitimate comparison?
Answer:
yes because all deises start out bad but as you can see after a few months and after the vaccine our numbers have slowed down quite a bit.
Explanation:
If a DNA codon changes from TTA to TTC, what amino acid would the matching mRNA sequence code for?
Answer:
TTC codon encodes for Phenylalanine (Phe)
Explanation:
A codon (also known as a nucleotide triplet) is a sequence of DNA or RNA composed of three consecutive nucleotides. During protein synthesis, each codon specifies a particular amino acid or stop signal (i.e., termination codons). There are 64 possible codons, 61 encode for amino acids, while three (3) codons represent stop signals (e.g., UAG, UAA, UGA). In this case, TTC (i.e., UUC codon in the mRNA) codon encodes the amino acid Phenylalanine, while TTA (i.e., UUA codon in the mRNA sequence) codon encodes the amino acid Leucine.
What is the wavelength of an X-ray whose frequency is 2.0 × 1018 Hz? Hint: An X-ray is an electromagnetic wave, so its velocity is equal to the speed of light (3.0 × 108 m/s).
A.
1.5 × 10-10 m
B.
3.0 × 10-8 m
C.
6.0 × 10-9 m
D.
0.6 × 10-11 m
Answer:
A. 1.5 × 10-10 m
Explanation:
Given the following data;
Frequency = 2.0 × 10^18 Hertz.
Speed of light = 3.0 × 10^8 m/s
To find the wavelength;
Wavelength = speed/frequency
Substituting into the equation, we have;
Wavelength = 3.0 × 10^8/2.0 × 10^18
Wavelength = 1.5 × 10-10 meters.
What type of energy continuously produces heat and light?
Answer:
Nuclear fusion.
Why is the normal range for the mass of DNA in a male cat cell lower than for a female cat?
Answer:
It's B
Explanation: I answered it right on gizmos.
Blood supply to an arm is cut off. Blood in the arm is sampled after
five minutes and analyzed. Which of the following would occur?
Concentration of HHb
A.
B.
C.
D
Concentration of HbO2
high
low
low
Concentration of HCO3
low
high
high
low
high
o
B
A
OC
Answer:
Blood Flow restriction training involves cutting off 50-80% of arterial ... Blood Flow restriction can be used on the arm or leg and the tourniquet is ... minutes, which is enough time to induce a hypertrophy response, but will not cause limb damage. ... Back; 3D Run Analysis · Dry Needling · Weightlifting Analysis
Explanation:
What are the correct genotype percentages?
OGG=25%, Gg=50%, gg=25%
O GG=0%, Gg=100%, gg=0%
GG= 75%, Gg=0%, gg=25%
The blue area is the ocean floor while the green and brown area is dry land. Which of the following is the best conclusion that can be drawn from the map?
Answer:
These symbols are con- stantly refined to better relate to ... area features, such as vegetation (green), water (blue), and densely ... Topographic contours are shown in brown by lines of different ... spaced contours or an absence of contours means that the ground ... The bathymetric contour interval may vary on each map
Explanation:
g One benefit of operons in bacteria is that they a. do not need ligands and regulatory proteins as single genes would. b. do not need any modification of the proteins after they are expressed. c. allow for alterations in DNA sequence by flipping promoters around. d. allow for coordinated gene expression of related genes on one mRNA controlled by one promoter. e. allow the bacteria to use a wide variety of carbon sources.
Answer:
d. allow for coordinated gene expression of related genes on one mRNA controlled by one promoter.
Explanation:
An operon is a group of functionally-related genes that share the same promoter region and the same operator which interacts with specific repressors or activators, and they are transcribed as a unit. This transcriptional unit (operon) is present in prokaryotic organisms (i.e., bacteria and archaea) but absent in eukaryotes. In an operon, each structural gene is known as a cistron, and they are transcribed together as a polycistronic primary messenger RNA (mRNA).
Why must transcription occur where DNA can be found?
because DNA can't leave
O because DNA polymerase is found there
O because ribosomes are in the nucleus
O because helicase unzips the DNA
Answer:
because DNA can't leave
Explanation:
Transcription must occur where deoxyribonucleic acid (DNA) can be found: A. because DNA can't leave.
What is transcription?Transcription can be defined as a biological process that typically involves re-writing the information contained within a deoxyribonucleic acid (DNA) into a ribonucleic acid (RNA) by enzyme RNA polymerase.
Generally, the Transcription of deoxyribonucleic acid (DNA) produces a single-stranded ribonucleic acid (RNA) molecule that is the same with the strand of DNA used as the template.
In conclusion, transcription must occur where deoxyribonucleic acid (DNA) can be found in living organisms because DNA can't leave.
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Why would you consider amphibians to have great biodiversity?
Amphibians are vertebrates in the class Amphibia that includes frogs, toads, salamanders, newts, and caecilians (wormlike amphibians). Amphibian species are considered important biological indicators of the health of an ecosystem because they live in both aquatic and terrestrial environments.
What will happen to a plant if put in a box with only one hole?
Answer:
does it have water and sun through the hole?
Explanation:
if not it will die. if you specify i will edit my answer.
Answer:
yes if watered but it would have drainage problems
Explanation:
hope this helps sorry if it doesn't have a good rest of your night :) ❤
Do you think murder committed during sleep walking is a punishable offense? Why?
Answer:
no because ur sleep walking and u cant control that
Answer:
yes and no
Explanation:
because when your asleep you dont know what your doing and when you get woken uo you tend to get violent so yea
EMB agar is a medium used in the identification and isolation of pathogenic bacteria. It contains digested meat proteins as a source of organic nutrients. Two indicator dyes, eosin, and methylene blue inhibit the growth of gram-positive bacteria and distinguish between lactose fermenting and non-lactose fermenting organisms. Lactose fermenters form a metallic green or deep purple colonies, whereas the non-lactose fermenters form completely colorless colonies. EMB agar is an example of which of the following?
a. a selective medium onlyb. a differential medium onlyc. a selective medium and a chemically defined mediumd. a selective medium, a differential medium, and a complex medium
Answer:
a selective medium, a differential medium, and a complex medium
Explanation:
EMB Agar (Eosin Methylene Blue Agar) is both a selective and differential culture medium that slightly inhibits Gram-positive bacteria and can be used to distinguish bacteria capable of fermenting lactose from those that are unable to ferment this disaccharide. This medium is commonly used for isolation and differentiation of coliforms (i.e., bacteria found in the soil and water samples) and fecal coliforms (bacteria found in the gut and feces samples). In EMB agar, lactose-fermenting-gram-negative bacteria (e.g., E. coli) will form colored colonies, while non-lactose-fermenting-gram-negative bacteria will form colorless colonies (e.g., Salmonella). EMB agar is composed of lactose, gelatin, methylene blue dye and eosin Y dye ( a xanthene dye) .
Explain why the structure of a brain cell would differ from that a red blood cell.
Answer: Red blood cells carry a specific type of protein, called hemoglobin, which is able to bind oxygen and release it in other tissues. A nerve cell doesn't have this protein because it doesn't need to bind oxygen. Instead, the nerve cell uses other proteins that help it transmit signals to other cells.
Explanation:
Brain is composed of brain cells known as nerve cells where as RBC also known as red blood corpuscle is a component of blood.
What is the structure of a brain cell ?The brain's neurons are the cells that transmit and receive chemical and electrical messages. They serve as the brain's building blocks and act as information carriers for all of the body's neurons, muscles, and tissues. You can think, feel, move, and take in information with their help.
Erythrocytes, sometimes known as red blood cells, are one of the elements of blood. Our bone marrow continuously produces them. One billion red blood cells can be found in just two or three droplets of blood, which is what gives human blood its recognizable red color. From our lungs, red blood cells transport oxygen to the rest of our bodies. The carbon dioxide is then transported back to our lungs, where it is expelled.
Therefore, the structure of a brain cell differs greatly from red bood cell.
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the length and breadth of a rectangular Courtyard is 90 m and 42 m find the distance covered by a boy if it takes 5 rounds of courtyard
Answer:
Area = L × B
= 90 × 42
= 3780 m
According to the question
He takes 1 round in 3780m
So ,
5 round = 5 × 3780
=18900
Explanation:
In which parent could chromosomal rearrangement have made an X chromosome with 2 fur color alleles?
Answer:
Mother
Explanation:
(see image below)
According to the given situation, the mutation needs 2 X chromosomes and only the mother has 2 X chromosomes whereas a father has X and Y chromosomes.
What are the 23 chromosome pairs?Humans have 23 pairs of chromosomes, 22 pairs of numbered chromosomes, and 1 X and Y chromosome (father) and mother have (XX) chromosomes.
Each parent donates one chromosome to each pair so that offspring get half of their chromosomes from their mother and a half from their father.
Thus, the mother is an answer.
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