Answer:
Memory T cells and B cells are immune cells that remain in the body after initial infection and retain a memory of a pathogen. Memory cells fire up a fast and powerful immune response when the pathogen appears again. Immune and lymphatic system health is necessary for protecting your body from germs and diseases.
Explanation:
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Remember a specific antigen and stimulate the immune system to react faster to invasion. Therefore, option "B" is correct.
What are T cells?T cells are a type of immune cell. They are produced in the bone marrow and get mature in the thymus gland. These cells were named after the site of maturation. T cells are also called memory cells. They are required for developing memory and building immunity against the pathogen in the future. They are mandatorily required for the immunosuppression condition.
They attack the CD4 receptors of the cell. The CD8 receptor of viruses by attacked by the T cells. The receptors depend on the types of antigen present. T cells are part of the adaptive immunity.
Therefore, T cells are important for adaptive immunity.
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Do my diffusion Assignment for 30 pts
Answer:
ok
Explanation:
but wheres is it
Which two processes happen during mitosis? A. The nucleus divides only once B the chromosomes move in a pattern C the gametes fuse to form a zygote D the nucleus goes through two rounds of division (Choose two pls)
Answer:
A and B, I think.
How does Earth's solid inner core affect seismic waves?
O A. They go faster through the inner core than the liquid outer core.
O B. It blocks S waves from passing through.
O C. They go slower through the inner core than the liquid outer core.
O D. It blocks P waves from passing through.
Earth's solid inner core affect seismic waves as they go slower through the inner core than the liquid outer core.The correct option is C.
The solid inner core affects seismic waves by slowing them down. Seismic waves are waves of energy that travel through the Earth's layers, including the solid inner core and the liquid outer core.
Seismic waves can be either P waves (primary waves) or S waves (secondary waves).P waves are compression waves that can travel through both solid and liquid material. However, S waves are transverse waves that can only travel through solid material.
Thus, option C is correct.
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Which of the following explains the process of evolution?
a process of change in a population through genetic variati
the genetic variation within a species
a change in one species that results from a change in a dife
DONE
Answer:
A process of change in a population through genetic variation.
Explanation:
Evolution is the process of change in heritable characteristics of populations of organisms over several generations as it allow natural selection in it.
Genetic variation which refers to differences in gene frequencies is an important force in evolution which relies of natural selection to cause an increase or reduce gene frequencies in a population. Evolution lead to changes in genetic material of populations over time which make them to develop genes that will allow them to adapt to their environment for survival and reproduction.
Answer: A: process of change in population
Explanation:
edge 2023
State one factor that contributed to the increase of life expectancy in the United Sates
Answer:Education
Explanation: Higher education levels are linked to higher socio-economic status and both are linked to improved longevity, according to Hall and Peterson. For those with a bachelor's degree or higher, life expectancy at age 25 increased by 1.9 years for men and 2.8 years for women, according to the CDCn
What is the net primary productivity of the tropical rainforest if gross primary productivity in a tropical rainforest is 6 kcal/m2/yr and respiration is 3 kcal/m2/yr? A) 1.5 kcal/m2/yr B) 2 kcal/m2/yr C) 3 kcal/m2/yr D) 4 kcal/m2/yr
Answer:
Net primary productivity of the tropical rain-forest = 3 kcal/m2/yr
Explanation:
Given:
Gross primary productivity in a tropical rain-forest = 6 kcal/m2/yr .
Respiration = 3 kcal/m2/yr
Find:
Net primary productivity of the tropical rain-forest
Computation:
⇒ Net primary productivity of the tropical rain-forest = Gross primary productivity in a tropical rain-forest - Respiration
⇒ Net primary productivity of the tropical rain-forest = 6 kcal/m2/yr - 3 kcal/m2/yr
Net primary productivity of the tropical rain-forest = 3 kcal/m2/yr
What is a zygote?
A. A fertilized egg cell that has not yet divided
B. A group of about 100 cells that forms from the fertilized cell
C. An organ that holds and protects the developing baby
D. An organ that supplies oxygen, nutrients, and water to the
developing baby
Answer:
A
Explanation:
3. What charts, tables, or drawings would clearly show what you have learned in this lab?lab:owl pellets Each chart, table, or drawing should have the following items: a. An appropriate title b. Appropriate labels
Answer:
You should share what the project is about! Every lab report on E2020 has the same question. I see you are in biology but that doesn't really help. And, no, I'm not just doing this for the points, I'm doing this because it won't let me comment XD
Explanation:
Answer:
ables should be:
Centered on the page.
Numbered in the order they appear in the text.
Referenced in the order they appear in the text.
Labeled with the table number and descriptive title above the table.
Labeled with column and/or row labels that describe the data, including units of measurement.
Explanation:
Select the correct answer.
How does the current, or sixth, mass extinction differ from the past five mass extinction events?
OA.
The sixth mass extinction is believed to be caused by human-related factors.
The sixth mass extinction is believed to be caused by natural forces.
OC.
The sixth mass extinction is believed to affect relatively fewer species.
The sixth mass extinction is believed to affect relatively fewer areas.
OD.
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Who created artifacts such as iron
armor, swords, pottery, jade, and
bronze?
A. Hinduism and Buddhism
B. Europeans
C. Hal Artisans
Answer: c
Explanation:
A Punnett square is used to _______.
➼ predict the genotypic and phenotypic probabilities of possible offspring
➼ determine if a trait runs in a family
➼track inherited traits through many generations
➼identify organisms that are carriers of a specific trait
❗PLEASE PROVIDE AN EXPLANATION, OR I WILL DELETE YOUR ANSWER/NO POINTS❗
Hello,
The answer is option A "predict the genotypic and phenotypic probabilities of possible offspring".
Reason:
A Punnett square is used to determine (predict) the genotype, and phenotype of a organism. Phenotype is the physical features of a organism fur, ears, nose, etc.... Genotype is most likely the height, eye color, etc....
If you need anymore help feel free to ask me!
Hope this helps!
-me :)
suggest why the phone and watch being connected by a wireless system is an advantage when running
Explanation:
because the full movie called the amount of each other and can help you to like let's say 11 in it to keep on counting the distances you won't be keeping record of it so that you will know that you did you did a great
Changes in groups of organisms overtime produce variations in a population. This relates to _______.
A. Macroevolution
B. Microevolution
C. Both
C. Both.
Explanation:
Changes that occur in different groups of organisms overtime that produce variations in a population relate to both macroevolution and microevolution. Although they are different, they both relate to this subject.
Macroevolution is on a big scale. This goes over organisms ancestors, large trends, and other groups of species that may be involved. This goes over a longer bit of time and is not as in depth.
Microevolution is on small scale. This goes over the different changes that may have occurred in allele frequencies from things like genetic drift, natural selection, or mutation. This goes in much more depth and looks deeper into what type of evolution may have happened.
What statement is true about natural selection and evolution
A. Evolution is the mechanism by which natural selection occurs
B. Natural selection and evolution both show change over time
C. Evolution and natural selection occurs separately in an ecosystem.
Answer:
b
Explanation:
HELP! NOW!
A. Cellular respiration shuts down during the day while
photosynthesis occurs, and then photosynthesis shuts down at night while cellular respiration occurs.
B. Both cellular respiration and photosynthesis rates cycle up and down in similar patterns over a 24-hour cycle.
C. Oxygen levels oscillate as the light-dependent reactions of photosynthesis take place during daylight and light-independent reactions take place during nighttime.
D. Cellular respiration remains constant, while photosynthesis cycles between a very high rate in the light and zero in the dark.
Answer:
Option-D
Explanation:
Cellular respiration and photosynthesis are the two main physiological process which drives the life on Earth. Photosynthesis process leads to the synthesis of Glucose whereas Cellular respiration breakdown the Glucose molecule to form ATP molecules.
In plants, the photosynthesis process occurs in green leaves whereas cellular respiration occurs in every cell of the plant inside the mitochondria.
In the given question, the graph shows:
1. The absorption of oxygen till 6 am which is required during cellular respiration.
2. After 6 am, the level of oxygen production becomes more than oxygen absorption till 6 pm.
3. After 6 pm, no sunlight is available therefore photosynthesis does not occur. After this, the rate of cellular respiration increases that is oxygen is taken in.
Thus, Option-D is correct.
Which of the following does the endocrine system regulate? Blood sugar Reflexes Respiration Senses
Answer:
Blood sugar
Explanation:
Answer:
blood sugar
Explanation:
Mating rituals or displays can be very complex but are also _______ behaviors.
Answer:territorial
Explanation:
Because I said so
Which process occurs in yeast to make bread rise?
aerobic respiration
lactic acid fermentation
alcoholic fermentation
hydrochloric acid fermentation
Answer:
The answer is option 3.
Explanation:
Yeast respire glucose anaerobically to produce alcohol and bubbles of carbon dioxide. Carbon dioxide is the gas which makes the bread rises.
So it is an alcoholic fermentation.
The equation for fermentation :
Glucose → Alcohol + Carbon dioxide
Answer:
c
Explanation:
_______ behaviors rely on prior practice or experience.
Please answer!! ASAP PLEASE and THANK YOUUU
Answer: I think it is 12 00
Explanation:
Which states of matter have a set shape
Answer: SOLID
Explanation:
Answer:
solid
Explanation:
solid has constant in both shape and volume.
PLEASE HELP ME OUT ! 20 pts
Answer:
B
Explanation:
B to C looks to me to be the biggest growth
Question 1 to 6
Parts of cells ,
please help me
Answer:
Explanation:
1 The first time the word cell was used to refer to these tiny units of life was in 1665 by a British scientist named Robert Hooke. Hooke was one of the earliest scientists to study living things under a microscope
2 Leeuwenhoek found animalcules
Dutch biologist and microscope pioneer Antoni van Leeuwenhoek observed in the late 1600s when he proclaimed the existence of a world of microscopic “animalcules”
3 The three parts of the cell theory are as follows: (1) All living things are made up of cells, (2) Cells are the smallest units (or most basic building blocks) of life, and (3) All cells come from preexisting cells through the process of cell division.
4 Four Common Parts of a Cell
Although cells are diverse, all cells have certain parts in common. The parts include a plasma membrane, cytoplasm, ribosomes, and DNA. The plasma membrane (also called the cell membrane) is a thin coat of lipids that surrounds a cell.
5 Ribosomes are small structures where proteins are made. They are found in both prokaryotic and eukaryotic cells
6 The main role of DNA in the cell is the long-term storage of information. ... The major function of DNA is to encode the sequence of amino acid residues in proteins, using the genetic code. To read the genetic code, cells make a copy of a stretch of DNA in the nucleic acid RNA.
here u go with your answers
Please help. :) it’s science
Which allele combination represents a female who is a carrier for an X-linked recessive disorder?
Answer:
The Correct answer would be XRXr
Explanation:
In humans, X and Y are the sex chromosomes which determine the gender of the person.
Answer:
AKA A youre welcome
Explanation:
What are the genotypes of the parents in the monohybrid cross below if the following offspring genotypes are predicted?
Answer:
Explanation:
The genotypes of the parents are Tt and tt
A unique characteristic of all grasslands is the predominance of ...... *
A. Tall trees
B. Tall herbs
C.Tall grasses
D. Tall shrubs
Answer:
Tall tress
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Which part of a green plant loses the most chloroplasts at the end of summer?
Answer:
A green plant's leaves lose most of their chloroplasts at the end of the summer.
Explanation:
Answer:
the green plant loses the leafś
Explanation:
Renewable energy is generally better for the environment as it produces less pollution.
True or False ?
How do cells behave in a multicellular protist?
1.They share nuclei between cells.
2.They exhibit cell specialization.
3.They don't exhibit cell specialization.
4.They're missing mitochondria.
Answer:
They don't exhibit cell specialization.
Explanation:
In a multicellular protist, the cells don't exhibit cell specialization.
Answer:
3.They don't exhibit cell specialization.
Explanation:
In a multicellular protist, the cells don't exhibit cell specialization.