Answer:
the answer is on letter A
Explanation:
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The bacterial RecA protein (and its counterpart in eukaryotes, Rad51) are involved in, and help direct: ________.
a. chromatin packing and heterochromatin formation
b. Apurinic site repair
c. Post-transcriptional regulation
d. Strand invasion
Answer:
The appropriate alternative is Option b (Apurinic site repair).
Explanation:
Although these antibodies eliminate compromised DNA bases through midriff of N-glycosylic attachments, maintaining perhaps an apurine or perhaps even apyrimidine site today.RecA connects towards DNA damage as well as precipitates recombinant restoration through doulas branch fracture pairing or daughter strand difference restore.Other solutions aren't relevant to the situation in question. So that the answer above is the right one.
This cell part contains an eukaryotic cell's DNA. *
O Endoplasmic Reticulum
O Ribosomes
O Golgi Apparatus
O Nucleus
The biggest cause of air pollution is: A.factories
B.airplanes
C.buses
D.automobiles
Answer:
Factories
Explanation:
They burn lot of fossil fuels every year and it causes in releasing of combustible substance and harmful gases which pollute the environment.
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white eyes are recessive in flies. can two red eyed flies have white eyed offspring
Answer:
Considering that white eyes are a recessive trait in flies, it is possible for two red-eyed flies to have offspring with white eyes only if both are heterozygous for this trait.
Explanation:
For two individuals with dominant phenotype for a trait to have offspring with the recessive trait, both must have a heterozygous genotype.
In the case of the characteristic eye color of the flies :
Red eye (R) is dominant trait. White eyes (r) is the recessive trait.When both parents are heterozygous, their genotype is Rr
In Punnett Square it can see the result of the crossing of these individuals:
Punnett Square :
Rr X Rr
Alleles R r
R RR Rr
r Rr rr
In the offspring, the probabilities are:
50% heterozygous individuals Rr, with red eye phenotype. 25% pure dominant individuals RR, with red eyes 25% individuals with the recessive rr genotype, white eyes.This is the possibility of two red-eyed flies having white-eyed offspring.
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Why do we perceive chlorophyll as being green?
a. Because it reflects green light.
b. Because it absorbs green light.
c. Because it absorbs yellow light.
d. Because it is green.
A .Because it reflects green light.
Explanation:
Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light. That particular light wavelength is reflected from the plant, so it appears green
Ann is observing the temporal bone and locates the jugular foramen and the jugular fossa. What two types of bone markings has she identified?
A. An extension and arounded process
B. A rough elevation and analytiat surface
C. A hole and a depression
D. A sit and an expanded end
Answer:
C. A hole and a depression
Explanation:
The jugular foramen is located at the base of the skull, it is oval in shape and from there emerges the internal jugular, which after emerging this intracranial vein this same forms the jugular fossa which is where it rests.
dont answer if you ont know it
The more bonds an atom can make, the more likely it is to combine with other atoms in different ways.
Which element is most likely able to make the greatest variety of bonds?
nitrogen
hydrogen
oxygen
carbon
Answer:
hydrogen
Explanation:
this is because hydrogen has a valency of 1 and has only one electron in it's outer most energy level thus able to bond with many elements easily
Please I’m begging you please help
Answer:
c Parisiteism
Explanation:
hi guys I need help with those questions can somebody help me please am doing a science fair project
the problem is CAN PLANTS STOP SOIL EROSION?
what can we put a title for this problem
what is the hypothesis for this problem
please help
Answer:Name for project.SOIL SAVERS. plants can stop soil erosion because the roots in plants keep the soil intack. this has already proven true by scientists and farmers. planting plants that has a large root system keeps more soil in. planting carrots and potatoes does not help keep the soil still because they have small root system.
Having freckles is a dominant trait, and not having freckles is a recessive trait. Which set of parents will not have any children with freckles? A. A mother with FF and a father with ff O B. A mother with Ffand a father with Ff O c. A mother with ff and a father with ff
As freckles are a dominant trait, they will not occur in the children with a homozygous recessive trait, i.e., ff. The correct option is C.
What are recessive traits?Recessive trait is a trait that really should be transmitted by both parents in order to be present in the offspring. Recessive features might exist in a person's DNA but not manifest in that individual.
As in the given case, F denotes dominance, and f denotes recessive character. Dominant trait always superimpose over the recessive one.
So, as freckles are a dominant trait, they will not occur in the children with a homozygous recessive trait i.e., ff.
Thus, the correct option is C.
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Answer:
c
Explanation:
Which of the following plant is associated with Chronic Obstructive Pulmonary Disease in horses?
a.Eupatorium adenophorum
b.Lantana camara
c. Quercus griffithi
d. Bracken Fern
how is food transferred
Answer:
In many cases, Western society routinely purchases food that was grown more than 1000 miles away and transported to the local grocery store. ... Trucks, trains, and boats, all of which consume fossil fuels, are the primary methods for transporting large quantities of food around the world
Explanation:
only a thesis accept the theory of evolution is it a fact or a fiction?
Answer:
Fact
Explanation:
evolution as fact and theory, a phrase which was used as the title of an article.
Considering the drifting of continents, how do you explain the abundance of marsupials and the absence of native placental mammals in Australia
Answer:
this phenomenon is a natural consequence of evolutionary processes and continental drift
Explanation:
Marsupials are mammals in which newborn offspring are carried in a pouch of the female (mother) body. On the other hand, placentals are mammals that complete embryo development in the mother's body, in the placenta. All the extant marsupials are endemic to Australia and the Americas. It has been shown that marsupials diverged (evolved) in South America, Australia and Antarctica when these landmasses were joined. In Australia, marsupials evolved to fit an ecological niche, which can be attributed to geographic isolation due to continental drift, while placental mammals are relatively recent and more scarce (mainly bats and rodents) within this region.
Which of the following is NOT needed in Transcription?
A. RNAm
B. DNA
C. Aminoacids
D. Ribosome
Lava lizards on Fernandino Island often eat flies directly from the sea lion's face. The sea lion gets rid of the flies and the lizard gets food. This is an example of which type of symbiosis?
Answer:
Commensalism
Explanation:
Lava lizards and the sea lion has a symbiotic relationship called commensalism.
When Sea lion take a nap, they attract flies and lava lizards feed on those flies and the sea lions apparently get rid of flies. In this act, flies does not harm sea lion and lava lizard get benefit.
Commensalism is defined as a symbiotic relationship between two organism in which one organism get benefit from other organism while causes no harm to the second organism.
Hence, the correct answer is "Commensalism".
please help me
is the my daughter
Answer: I think it’s D,C, and A.
Explanation:
What helps make different types of carbohydrates?
Answer:
glycosidic bonds between monosaccharides that combine to form polysaccharides
Explanation:
The building blocks of carbohydrates are individual monosaccharides (i.e., sugar molecules), such as glucose, fructose, glucuronic acid, galactosamine, glucosamine, etc. These individual monomers of carbohydrates bond to form polysaccharides such as cellulose and starches. Monosaccharides form glycosidic bonds with an alcoholic OH group of a second monosaccharide to form a disaccharide (for example, lactose), and then these larger molecules bond together to form either linear or branched polysaccharides. Starch, for example, is a polysaccharide composed of monomers of glucose molecules.
Why is difficult to make a list of characteristics of life
Answer:
"Being alive" is the most important characteristic of life. According to science the answer is different. Biology is the branch of science deals with the study of life and living matter in all its forms and phenomena.
Explanation:
Its difficult because sometimes beings can easily be side tracked
Evolution is change in a population over time and includes the gene pools of that population. How does biogeographic
isolation allow for the change of gene pools over time?
O Biogeographic isolation affects the random changes that take place within gene pools.
O Biogeographic isolation causes changes in gene pools that result from populations being separated.
O Biogeographic isolation determines who will win competition for mates
O Biogeographic isolation determines the time that populations will breed
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Whoever answers gets brainlist!
Answer: universe, galaxy ,solar system, planet, moon, star
Explanation:can i get brainliest
i think thts the right order
can someone answer all these questions
Answer:
3 is humidity 2nd don't ask me..
What major factors play a role in global warming?
Answer:
1. Carbon dioxide levels in the Earth's atmosphere have been steadily increasing.
Explanation:
19. The energy that animals need for their life functions is released when their cells carry out which of the following functions?
A.Breaking down glucose molecules
b.Moving molecules across membranes
c.Absorbing water from the environment
d.Eliminating waste products
Answer:
B
Explanation:
During cellular respiration in most animals and plants, oxygen reacts with carbon containing molecules (sugars) to provide energy to cells of the organism. the flow of energy in organisms.
The following functions of energy in animal is :
B) Moving molecules across membranes.
Cellular RespirationThe following functions of energy in animal is the moving molecules across membranes.
The cellular respiration in most creatures and plants, oxygen responds with carbon containing atoms (sugars) to supply vitality to cells of the life form. the stream of vitality in living beings.
Thus, the correct answer is B.
Learn more about "Respiration":
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Genetic engineering is the manipulation of genes using cloning and transformation to change the
gene structure. Genetic engineering has many positive outcomes. These positive outcomes include
a. Manipulation of crops decreasing growth rate.
b. decreasing the diversity of living organisms
c. increasing the possibility of new pathogens
d. fruits and vegetables do not spoil easily
Answer:
B
Explanation:
Organisms that have very different taxonomies (e.g. are from different families) but look very similar represent an example of
Dead cells with narrow lumen, lignified cell wall with a few or
numerous pits and serving a mechanical function only are called -
Collenchyma
O
Xylem
O
Aerenchyma
O
Sclerenchyma
Answer:
The correct answer is - Sclerenchyma
Explanation:
Sclerenchyma are the dead cells with narrow lumen lignified cells. These dead cells has numerous pits that helps in trading the various substances to neighboring cells. At matuarity, hese cell lack the protoplast so therefore called dead cells .
Sclerenchyma cells are lignified which makes them thick and these cells help in the supporting the plants. These cells are impereable to almost everything gases, substances and many more.
If a female fruit fly is heterozygous with the allele for white eyes being recessive and the red eyes being dominant on the X-chromosome. She is crossed with a hemizygous red eyed male, what would be the expected ratio of male and female phenotypes if they were bred together?
Answer:
100% red eyes because there is 50% AA and 50% Aa.
Explanation:
To find the expected ratio of male and female phenotypes if they were bred together, you need to make a punnett square/table.
Female: A a
"A" is white eyes, which is RARE. "a" is red eyes, which is COMMON.
Male: A A
"A" is red eyes, which is COMMON.
Multiply Aa x AA by a punnett square.
GUIDE:
1. AA is common and does not carry the recessive gene of being white-eyed. 2. aa is rare and carries the recessive gene of being white-eyed.
3. Aa is common as being red-eyed since being red-eyed is dominant, but carries the recessive gene of being white-eyed.
PLEASE HELP QUICK MARKING PEOPLE AS BRAINLIST
Which of the following organelles would not be present in the nerve cell of the humpback whale?
A. Plasma membrane
B. Cell wall
C. Mitochondria
D. Lysosome
Answer: b
Explanation:
BIOLOGY - QUARTER 2 - SUN
Which two bio molecules must the supplement contain to provide these benefits
Answer:
Proteins and Carbohydrates
The supplement has to build lean muscle and strengthen tendons and ligaments. Muscle, tendons, and ligaments are all made of protein. So the supplement must contain protein.
It should also provide energy. The most readily used form of energy is carbohydrates