Human Immunodeficiency Virus (HIV) is a virus that infects (and destroys) Helper T Cells. As a result, people who are HIV+ generally have a low number of these T Cells. How would the dramatic decrease in Helper T Cells caused by HIV affect a person’s immune response? Be specific using details from what you learned about the immune response.
Answer:
HIV invades various immune cells (e.g., CD4+ T cells and monocytes) resulting in a decline in CD4+ T cell numbers below the critical level, and loss of cell-mediated immunity − therefore, the body becomes progressively more susceptible to opportunistic infections and cancer.
HIV infects and deletes CD4+ T cells that normally coordinate the adaptive T- and B-cell response to defend against intracellular pathogens. The immune defect is immediate and profound: At the time of acute infection with an AIDS virus, typically more than half of the gut-associated CD4+ T cells are depleted, leaving a damaged immune system to contend with a life-long infection.
PLEASE HELP ME WITH THE FIRST QUESTION AND DONT PUT ANY LINKS!!!
how will photosynthesis affect oxygen levels?
(also if anyone could help me with the rest of these answers, that would be great <3)
The process of photosynthesis positively affects the level of oxygen in the ecosystem. This is because oxygen is the byproduct of the photosynthesis mechanism along with the main product known as Glucose.
What is Photosynthesis?Photosynthesis may be defined as a process through which green plants and some photosynthetic algae synthesize their own food in the form of glucose with the help of carbon dioxide and water in the presence of sunlight.
The complete reaction of photosynthesis si as follows:
[tex]6CO_2+12H_2O[/tex] → [tex]C_6H_1_2O_6+6O_2+6H_2O.[/tex]With the help of this reaction, this is determined that if the rate of photosynthesis increases, the level of oxygen is positively affected which means it is also increasing. It is opposite to the process of cellular respiration which involves oxygen as a reactant.
Therefore, the process of photosynthesis positively affects the level of oxygen in the ecosystem.
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How do biotic and abiotic factors contribute to the health of an ecosystem?
Answer:
A
Explanation:
PLEASE HURRY NUMBER 8
Answer:
C. a species that was unable to adapt and died out
ill give brainly please answer asap
having two of the same genes for the trait (sometimes called purebred).
Answer:
if this is a true or false, then it is true
Explanation:
Select the correct answer from each drop-down menu. Covering glass E with plastic wrap prevents (oxygen/ carbon dioxide) from entering the glass so Jared can test whether (Aerobic/Anaerobic) respiration occurs.
Answer:
Covering glass E with plastic wrap prevents oxygen from entering the glass so Jared can test whether anaerobic respiration occurs.
Explanation:
#plato/edmentum gang
Hope this helps!!!
Please mark brainliest.
Respiration is the process of inhaling oxygen and exhaling carbon dioxide. Covering a glass prevents the oxygen to enter and can use to test anaerobic respiration. Thus, options 1. a and 2. b are correct.
What is anaerobic respiration?Anaerobic respiration is a process that uses electron acceptors to produce energy by breaking glucose or other sugar molecules. Unlike aerobic respiration, it lacks the use of oxygen for metabolic reactions.
This occurs in the absence of oxygen and occurs in the cytoplasm with the help of oxidizing substances like nitrate, fumarate, sulfate, etc. to produce less ATP compared to aerobic reactions of respiration.
Therefore, covering a glass prevents the entry of oxygen and can be used to observe the anaerobic respiration by some microbes.
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Use the Weather probe to measure the land-air and ocean-air temperatures. What are these temperatures at this time?
Answer:
Use the Weather probeto measure the land-air and ocean-air temperatures. What are these temperatures at this time? 29.1 degrees and 22.2 degrees, respectively. C.
Explanation:
By using the Weather probe to measure the land-air and ocean-air temperatures. It is found that the temperature of land air is found be 29.1°C and the temperature of ocean air is found to be 22.2°C.
What is a weather probe?A weather probe may be defined as an observation post where weather conditions and meteorological data are considerably observed and recorded under controlled conditions. While weather governs the state of the air and atmosphere at a particular time and place.
According to the context of this question, a weather probe determines a facility, either on land or sea, with instruments and equipment for measuring atmospheric conditions to provide information for weather forecasts and to study the weather and climate.
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is cali good for lavender plants and why ?
Which sequence represents the normal blood flow in pulmonary circulation?
Show photo of pulmonary circulation
0330 (Tuesday)- It has been said that living
organisms are nothing more than sacks of
chemicals and chemical reactions? Do you agree
with this? Why or why not?
DNA is not useful during
A) replication
B)transcription
C) proteins synthesis
D) mitosis
Answer:
D. mitosis
Explanation:
I wade out the options dna is useful during protein synthesis because the dna controls the synthesis of proteins in transcription where mRNA is built on a DNA template and DNA replicate it self
helpp me plz it would mean alot
Answer:
Codon
Explanation:
mRNA bases are grouped into sets of three, called codons.
Why are trees generally measured at 4 feet, six inches feet from the ground?
Answer:
Trees are generally measured at 4 feet, six inches feet from the ground because trees are generally a bit wider at the bottom where the roots begin to spread, so choosing a point at which all trees are measured is one way to keep documentation consistent. 3.
Explanation:
Answer:
Because trees are generally a bit wider at the bottom, where the roots spread
Explanation:
In mice, black color (B) is dominant to white (b). At a different locus, a dominant allele (A) produces a band of yellow just below the tip of each hair in mice with black fur. This gives a frosted appearance know as agouti. Expression of the recessive allele (a) results in a solid coat color. If mice that are heterozygous at both loci are crossed, ___ out of 16 will be black in color.
Answer:
3
Explanation:
Heterozygous mice at both loci would be BbAa genotype.
B (black) is dominant over b (white) but the presence of A results in agouti.
Crossing two heterozygous:
BbAa x BbAa
Progeny
9 B_A_ - Agouti
3 bbA_ - agouti
3 B_aa - Black
1 bbaa - white
Hence, 3 out of 16 progeny will be black in color.
See the attached image for the Punnet's square analysis of the cross.
Meiosis results in...
A) 4 diploid daughter cells
B) 2 haploid daughter cells
C) 2 diploid daughter cells
D) 4 haploid daughter cells
Answer:
The answer is D) 4 haploid daughter cells
Explanation:
Hope this helped Mark BRAINLIEST!!!
How can electromagnetic waves be used to fight a forest fire?
Gamma ray images can show hot spots as radioactive areas.
Ultraviolet images can show hot spots as fluorescent areas.
X-ray images can show hot spots as white areas.
Infrared images can show hot spots as red areas.
Answer: the answer to this is D because these rays can show you where the fire is located even if it is enveloped in a cloud of gray and black smoke that prevents you from seeing it.
Explanation:
The electromagnetic waves be used to fight a forest fire should be option D. Infrared images can show hot spots as red areas.
Reason of why electromagnetic waves be used to fight?The gamma-ray images should represent hot spots just like the radioactive areas.
The ultraviolet images represent the hot spots just like the fluorescent areas.
Also, these rays should represent where the fire is located also the black smoke prevent you.
hence, The electromagnetic waves be used to fight a forest fire should be option D. Infrared images can show hot spots as red areas.
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illustrate the cellular respiration pathway (using diagrams)
Answer: this is your explanation
How did New Zealand's early ecology affect which traits were selected for/against in the kakapo's ancestors?
Answer:
Hairy skin which helps kakapo's ancestors to live in harsh climate of New Zealand.
Explanation:
New Zealand's early ecology greatly affected the population of kakapo's ancestors because the environmental conditions for kakapo's ancestors are favourable and there is no invasive species which reduces the population of kakapo's ancestors near to extinction. The traits that were selected for the kakapo's ancestors provides ability to live and survive in the temperate and subtropical climates of New Zealand. The flightless trait in this bird is also responsible for its extinction because this bird can't run away from their predators.
Why are there many, many more craters on the "outer back" side of the moon than there are on the "inner facing" side of the moon?
Answer: Due to the strong force of attraction of external objects like meteorites or rocks the outer surface of the moon is affected by the craters.
Explanation:
The asteroids, meteorites, comets, and other space bodies fly around the moon and when they hit the surface of the moon a crater is created as the moon has no atmosphere. Also, the size of the crater is larger than that of the size of the body. The inner surface of the moon also has a crater which is because of volcanic eruptions occurring inside the moon. The volcanic craters are the same as that of the impact so produced. The volcanic eruptions are not much frequent than the exterior objects hitting the moon so more craters are created on the outer backside of the moon.
GIVING BRAINLIEST!!!
Two environmental changes are described below:
Environmental change 1: Many small tree saplings are competing for sunlight on the forest floor.
Environmental change 2: Many bluebirds have become ill with the infectious West Nile virus.
Which statement is true about these environmental changes?
A) Environment change 1 is increased predators and environmental change 2 is climate change.
B) Environment change 1 is pollution and environmental change 2 is disease.
C) Environmental change 1 is reduced space and environmental change 2 is disease.
D) Environmental change 1 is reduced space and environmental change 2 is lack of food.
Answer: I would say answer C
Explanation:
The statement which is true about these environmental changes is that the Environmental change 1 is reduced space and environmental change 2 is disease. Thus, the correct option will be C.
What is Environmental change?Environmental change can be defined as a change or any disturbance of the environment which is most often caused by human influences and the natural ecological processes. Environmental changes are the effect of changes which include various factors, such as natural disasters, human interferences, or the animal interaction.
The statement which is true about these environmental changes is that the Environmental change 1 is reduced space and environmental change 2 is disease. This is because, in environmental change 1 the different species compete for resources and in environmental change 2 the species are affected with infectious virus.
Therefore, the correct option will be C.
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What are the causes of variations ? please explain thi also
Answer:
variation can be caused by mutation and other things
Explanation:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light or cigerette smoke
➜ Following are the causes of variations:
Dual percentage: Offsprings inherit some features from mother and some from father. Hence no offspring will exactly resemble to either of the parent or each other.Mutation in gene or chromosomal pattern also causes variations.The green pigment in the chloroplast that captures the sun's energy is
Answer:
Chlorophyll............
In another one of Mendelssohn Experiments, he crossed the off spring. Two pea plants with purple flowers (Pp) were crossed.
Answer:
There will be a dominant and recessive trait that would be formed.
Explanation:
3 purple flowers would be dominant while 1 will be recessive.
The process of water freezing water to thaw and break apart rock is called____.
Answer:
mechanical weathering
Explanation:
What process occurs immediately after fertilization?
A. Meiosis
B. Differentiation
C. Cell division
Answer:
C
Explanation:
Answer:
C. Cell division
Explanation:
Fertilization results in the creation of a zygote.
causes of over fishing
Answer: The causes of overfishing can change the size of fish remaining. When too many fish are taken out of the ocean or lakes it creates an imbalance that can erode the food web and lead to a loss of other important marine life, including vulnerable species; like sea turtles corals and seaweed.
Hope this helps :)
Your normal heartbeat before exercise is called your ____________________.
heart rate
muscle
pre-heart rate
tissue
Answer:
Heart rate i think
Explanation:
Answer:
it should be resting heart rate, but i dont see that as an answer...
Match each example with what type of adaptation it is.
Answer; 1 is chemical, 2 is behavioral, and 3 is structural