Answer:
In general, your body fights disease by keeping things out of your body that are foreign. Your primary defense against pathogenic germs are physical barriers like your skin. You also produce pathogen-destroying chemicals, like lysozyme, found on parts of your body without skin, including your tears and mucus membranes. In response to infection, your immune system springs into action. White blood cells, antibodies, and other mechanisms go to work to rid your body of the foreign invader. The immune system has a vital role: It protects your body from harmful substances, germs and cell changes that could make you ill. It is made up of various organs, cells and proteins.
Once infected cells have sensed an invading pathogen, they secrete molecules called cytokines and chemokines. These cells are then primed to resist an infection with the invading virus. Cytokines such as interferons activate anti-viral genes in the infected and neighbouring cells.
Microorganisms capable of causing disease—or pathogens—usually enter our bodies through the eyes, mouth, nose, or urogenital openings, or through wounds or bites that breach the skin barrier. Organisms can spread, or be transmitted, by several routes.
The second line of defense is nonspecific resistance that destroys invaders in a generalized way without targeting specific individuals: Phagocytic cells ingest and destroy all microbes that pass into body tissues. For example macrophages are cells derived from monocytes (a type of white blood cell).
If pathogens do manage to enter the body, the body's second line of defense attacks them. The second line of defense includes inflammation, phagocytosis, and fever.
Answer:
your skin protects itself because of all the oils on your glands .. but when you get a cut the while blood cells trap and eat them
Explanation:
8. Which of the following is a polysaccharide?
sucrose
cellulose
fructose
glucose
Answer:
Cellulose i think?
Explanation:
Answer: Glucose
Explanation: Glycogen is a large, branched polysaccharide that is the main storage form of glucose in animals and humans. Glycogen is as an important energy reservoir; when energy is required by the body, glycogen in broken down to glucose, which then enters the glycolytic or pentose phosphate pathway or is released into the bloodstream. Glycogen is also an important form of glucose storage in fungi and bacteria.
help asap!
DNA polymerase is an enzyme required in DNA replication. Its role is to synthesize DNA, adding individual nucleotides to each strand of newly synthesized DNA with the help of other enzymes such as primase and ligase. There are several families of DNA polymerase in both prokaryotes and eukaryotes, but through different species, portions of DNA polymerase are highly conserved. What do you think is the evolutionary significance of DNA polymerase? What do you think would happen if there was a genetic mutation on the genes encoding for DNA polymerase?
A sample answer would look like this: The DNA polymerase has evolutionary significance because it is required for DNA to be transmitted across generations. A genetic mutation in a gene encoding for DNA polymerase could lead to significant flaws in DNA replication, which could lead to major flaws in the DNA replicated for cell division. This could lead to large-scale errors and result in the death of the organism.
Answer:
Abstract. DNA polymerase I (pol I) processes RNA primers during lagging-strand synthesis and fills small gaps during DNA repair reactions. However, it is unclear how pol I and pol III work together during replication and repair or how extensive pol I processing of Okazaki fragments is in vivo
Explanation:
Answer:
DNA polymerase has evolutionary significance because it is required for DNA to be transmitted across generations. A genetic mutation in a gene encoding for DNA polymerase could lead to significant flaws in DNA replication, leading to major flaws in the DNA replicated for cell division. This could lead to large-scale errors and result in the organism's death.
Explanation:
PLEASE HELP ME
Do you think it’s possible to capture energy from photosynthesis for human use? please explain
Answer:
No
Explanation:
I do not think it is possible because plants do photo synthesis in a organelle called chloroplast which humans do not have.
What climate conditions occur during La Niña?
O stronger prevailing winds and more hurricane activity
O warmer Pacific waters and warmer winters
O more hurricane activity and warmer Pacific waters
warmer winters and stronger prevailing winds
Answer:
Stronger prevailing winds and more hurricane activity .
Answer:
A: stronger prevailing winds and more hurricane activity
Explanation:
Just took Edge 2021 test
what may happen to the body when exposed to an infection?
A. your body responds by functioning normally
B. the body gets a surge of energy causing a slight increase in body temperature and you feel great
C. your body responds by raising the core body temperature causing a fever.
D. nothing happens when the human body is exposed to an infection
Answer:
C
Explanation:
When an infection is caused the body usually responds in several ways, one way being fever hence flu's and colds
HELP ME PLSSSSSSSSSSSSS
Answer:
Explanation:
CAN SOMEONE LOOK ON MINES AND HELP ME LOL
Which mechanism of transport takes place without expending cellular energy?
Active
Hypotonic
Isotonic
Passive
Answer:
c
Explanation:
Cross two heterozygous black mice and tell the possible phenotypes and
genotypes in their offspring.
Answer:
Phenotype: 3 black mice: 1 brown mice
Genotype: 1 BB: 2Bb: 1bb
Explanation:
This question involves a single gene coding for fur color in mice. The allele for black color (B) is dominant over the allele for brown mice (b). This means that a mouse that is heterozygous will be black.
If two heterozygous black parents are crossed i.e Bb × Bb, the gametes produced by each parent are: B and b. Using these gametes in a punnet square (see attached image), the following offsprings will be produced:
BB, Bb, Bb, and bb
- The phenotypes of this cross is 3 black mice: 1 brown mice
- The genotypes of the cross is 1 BB: 2Bb: 1bb
How did cyanobacteria aid the evolution of complex life on land? Do you think cyanobacteria are as significant to this process today as they were during Precambrian time?
Answer:
Oxygen, origin of plants and chloroplast.
Explanation:
The oxygen present in our atmosphere was generated by various species of cyanobacteria during the Archaean and Proterozoic Eras. origin of plants on the earth is other great contribution of the cyanobacteria. The chloroplast which is present in plants due to which they make their own food is actually a cyanobacterium living within the plant's cells.
your skin is made up of two layers the epidermis and the dermis. The epidermis produces an oily protein that repels water. When you soak in the bathtub for a long time or Swim for a long time the protein is sloughed off. As a result, your skin cells begin to swell from the excess water and they look wrinkled.
what type of transport is this?
A.)Isotonic
B.)Hypertonic
C.)Hydrotonic
D.)Hypotonic
Blood type is an example of
Answer:
Blood type is an example of ✔ codominance
Explanation:
Blood type is determined by the ✔ antigens on the blood cells.
✔ Antibodies attack foreign blood that does not contain the same antigens.
Blood type is an illustration of codominance.
What is blood type?Blood group also known as blood type refers to classification of blood on the basis of the absence and presence of antibodies and inherited antigenic components on the red blood cells surface. These antigens may be:
ProteinsCarbohydratesGlycolipidsGlycoproteinsThe blood type in humans is an example of codominance. In codominance, neither of the allele can inhibit the expression of the other allele. One of the example is the ABO blood group in humans. In this, both the alleles A and B are expressed.
Therefore, if a person is inheriting allele A from the mother and allele B from the father, he or she will have the blood type AB.
Thus, blood type is an example of codominance.
Find out more information about blood type here:
https://brainly.com/question/11333649
Use the crisscross method to find the chemical formula for the ionic
compound formed by aluminum (Al) and sulfur (S).
Help
Answer:
Al2S3
Explanation:
HELP! I'll give the brainliest!!
Answer:
In facilitated diffusion, molecules move down their concentration gradient.Explanation:
In facilitated diffusion, substances move into or out of cells down their concentration gradient through protein channels in the cell membrane. Simple diffusion and facilitated diffusion are similar in that both involve movement down the concentration gradient.
Osmosis refers specifically to the movement of water across a semipermeable membrane, with the solvent (water, for example) moving from an area of low solute (dissolved material) concentration to an area of high solute concentration.
Active transport is the movement of dissolved molecules into or out of a cell through the cell membrane, from a region of lower concentration to a region of higher concentration. The particles move against the concentration gradient , using energy released during respiration .
Can someone please help me
Answer:
I think its d
Explanation:
b and c are used in the making of glucose (co2 and o2)
glucose is made and releases atp
Reflex action
(a)
Miriam accidently touches a hot pot and quickly withdraw her hand. Describe
the series of events in the nervous system which causes Miriam to react thi
way
Answer:
Reflex action/reflex arc/reflex (allow "involuntary") The stimulus (heat) is detected by temperature receptors in the skin. This causes impulses to travel along a sensory neurone to the spinal cord, due to chemical changes across the synapses. Here they go along a relay neurone, and then are sent via a motor neurone to the effector (an arm muscle in this case). The muscle contracts, moving the hand away and preventing further harm.
One biotic factor of a freshwater pond would include the
A) temperature of the water
B) algae growing in the water
C) mud on the bottom of the pond
D) amount of light penetrating the water
(First person who answer’s gets brainly plz answer quickly, and no trolling.)
Answer:
B. algae
Explanation:
biotic factor means something alive is in the factor. all the others are abiotic factors
The biotic factor is a living factor providing a source for ecosystem development, hence option b algae in the water are the correct option.
What is a biotic factor of a freshwater pond?A biotic factor is a live entity that influences its surroundings. Aquatic plants, fish, amphibians, and algae are all examples of freshwater ecosystems.
A biotic factor is a live entity that influences its surroundings. Aquatic plants, fish, amphibians, and algae are all examples of freshwater ecosystems.
Turbulence, temperature, water clarity, habitat size, and water depth all influence the structure and function of ponds and lakes. Temperature interacts to affect lake stratification and water circulation.
Therefore algae that balance the aquatic ecosystem is a major abiotic factor, hence option b in water-growing algae is correct.
Learn more about the biotic factors of a freshwater pond, here:
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Will mark Brainliest!!!
Paragraph 5 looks at the types of fuels organisms need.Which of the Following statements is true?
1)Humans need a lot of fat molecules to avoid hunger
2)humans need proteins, fatty acids, vitamins & minerals
3)Humans need a constant supply of red meat
4)Humans need to take Vitamin B supplements
Please help & thank You
Answer:
2
Explanation:
Humans need proteins, fatty acids, vitamins, and minerals
A type of plant that has cells inside that form long tubes and carry nutrients and water is called _____________.
Answer:
It is called a Vascular tissue.
Explanation:
Hope this helped ;)
Describe the contributions of Schlieden and Schwann to the cell theory.
Schwann - In 1839, he cells are the basic unit of animal structure
Schlieden - In 1838, he discovered cells are the basic unit of plant structure
Hope this helps
Which process occurs in sexual reproduction?
(1) fission
(2) budding
(3) vegetative propagation
(4) fusion of gametes
4. I need help with this question
Answer:
F
Explanation:
Scientific laws attempt to explain nature...
true or false
All of the images below were taken using a microscope. Which of these photos shows cells?
Image by Umberto Salvagnin
COMPLETE
Answer:
It is all of them
Explanation:
just did it on edge!
Answer:
A,B,C
Explanation:
I got it right.
Question 6 of 10
What are the characteristics of a flash flood? Select the three correct
answers.
O A. Occurs quickly
B. Occurs only during a thunderstorm
O C. Lasts a short time
D. Has a large volume of water
Answer: A, C, D
Explanation:
Give brainliest please!
PLS HELP!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Other organisms were another factor. What kinds of changes in other populations of organisms could be affecting the moths?
Explanation:
umm.
The image below shows the cell cycle with checkpoints indicated in red. What will most likely happen if the cell finds a mistake at one of the checkpoints?
Answer:
I think it may be A. the cell will prevent division from occurring
The most likely to happen if the cell finds a mistake at one of the checkpoints is the cell will prevent the division from occurring. The correct option is A.
What are checkpoints in cell division?Cell cycle checkpoints are processes that monitor the sequence, integrity, and fidelity of the cell cycle's fundamental events. These include cell development to the optimum size, chromosomal replication and integrity, and correct segregation at mitosis.
The cell that divides to produce two daughter cells is known as the mother or parent cell in the process of cell division. Mitosis produces two offspring cells that are genetically identical to the mother cell. The cell cycle has four checkpoints. These are G1, S, G2, and M.
Therefore, the correct option is A. the cell will prevent the division from occurring.
To learn more about checkpoints, refer to the link:
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Accordingtocelltheory,whicharemadeofcells? a. Kitten, mushroom, bacteria b. Rock, kitten, catus c. Mushroom, rock, bacteria d. Bacteria, kitten, catus
Answer:
The correct answers are:
kitten mushroom bacteria (a)
Bacteria, kitten cactus (d)
Explanation:
The cell theory states that:
a) all living organisms are made up of cells
b) cells are the basic structural and organizational unit of life
c) all cells arise from pre-existing cells.
From the three statements above, all living organisms fall into the categories hence from the list, all the living organisms (Kitten, mushroom, bacteria, and cactus) are made up of cells. While rocks are non-living hence they are not made up of cells.
Answer:
All except for rock
Explanation:
Weather balloons are sent into the atmosphere to record: (Select all that apply)
humidity
temperature
wind
pressure
precipitation
Answer:
temperature pressure moisture
Explanation:
From my notes hope this helps.
Answer:
temperature pressure moisture
Explanation:
Cross two heterozygous black mice and tell the possible phenotypes and
genotypes in their offspring.
Answer:
The correct answer is -
Phenotype: 3:1 (dominant black mice: recessive brown allele)
genotype: 1:2:1 (purebred dominant : heterozygous: purebred recessive)
Explanation:
In the given question there is a cross that takes place between two heterozygous black mice. LEt assumes B is black which is the dominant allele and b is the recessive allele or brown. As it is given in heterozygous condition black mice are present which means the B is dominant over b.
Now cross:
Gametes: B and b for each mice
B b
B BB Bb
b Bb bb
By the cross, there are two phenotypic offspring that produce 3 black mice out of four and 1 brown or recessive allele out of four
And, genotypically three offspring in the ratio of 1:2:1 (purebred dominant : heterozygous: purebred recessive)
help, please. this is for a friend to help me with.
Explanation:
I hope this helpppppppppppp
Answer:
14. To cause cancer, proto-oncogenes require 2 allele(s) to be mutated and therefore are considered recessive. The mutation results in a gain of function.
15. To cause cancer, tumor suppressor genes require 2 allele(s) to be mutated and therefore are recessive. The mutation results in a loss of function.