Answer:
Antibodies
Explanation:
Skin, tears, sweat and mucus, are all first line of defense.
The part that is not the first line of immune defense is antibodies. The correct option is d.
What are antibodies?
The immune system is a bodily system that consists of white blood cells and antibodies that aid in the fight against any external invaders or infections that enter the body.
They are the body's defense mechanism. Antibodies recognize the pathogen and assist your body in combating it. These antibodies are produced by your body's immunological system. Everyone possesses a variety of antibodies. Each of them detects intruders, such as viruses and bacteria, that might cause illness.
An antibody is a protein that the body's immune system produces when it recognizes dangerous chemicals known as antigens. Microorganisms (bacteria, fungi, parasites, and viruses) and chemicals are examples of antigens.
Therefore, the correct option is d, Antibodies.
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Why isn't medical and chemical waste placed in landfills ? A. It would contaminate the land and water with dangerous poisons B. It would cause the landfills to fill up too quickly C. It would prevent refuse from breaking down over time D. It would contribute to global climate change
Answer:
A. It would contaminate the land and water with dangerous poisons
Explanation:
Putting medical and chemical waste into landfills has extremely dangerous consequences to the environment and public health.
If they were put into landfills, these toxic wastes would leech into the soil and groundwater below them.
These toxins can accumulate over time, and harm plants and animals.
Humans may also absorb these toxic chemicals.
So, the correct answer is A. It would contaminate the land and water with dangerous poisons
Answer:
A
Explanation:
The water and land will become contaminated which will harm or endanger all the living organisms and us humans around it. Because they use the water and land source.
cichlids fish evolution, as seen in lake victoria in africa, is an example of ______ equilibrium.
Answer:
Evolution
Explanation:
The cichlids fish evolution, as seen in lake victoria in africa, is an example of Evolution equilibrium.
What is evolution?The gradual change of an organism over a period of time is called evolution.
Evolution is the population phenomenon. The sudden change in an individual is called a mutation.
These are the thing that leads to the evolution:-
Natural selection ReproductionCrossing over.Thus, is an example of Evolution equilibrium.
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4. Which of the following is NOT an inherited trait?
a. Eye color
b. Number of limbs
c. Flower color
d. Ability to read
The skeletal part of the musculoskeletal system:
A. eliminates wastes from the body.
B. helps the body to create heat.
C. produces facial expressions.
D. protects the organs of the body.
Answer:
D
Explanation:
The musculoskeletal system's primary functions include supporting the body, allowing motion, and protecting vital organs. The skeletal portion of the system serves as the main storage system for calcium and phosphorus and contains critical components of the hematopoietic system. The musculoskeletal system is made up of bones, cartilage, ligaments, tendons and muscles, which form a framework for the body. Tendons, ligaments and fibrous tissue bind the structures together to create stability, with ligaments connecting bone to bone, and tendons connecting muscle to bone
Answer:
d
Explanation:
Study Island
Variation in genotype is caused by
O None of the above
e phenotypes changing more quickly than genotypes.
o recombination of genes as a result of sexual reproduction.
O
O mutations only.
Answer:
Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. Another source is gene flow, or the movement of genes between different groups of organisms. Finally, genetic variation can be a result of sexual reproduction, which leads to the creation of new combinations of genes.
____________________________ is the process in which humans chose the desired traits of an organism.
a
Artificial selection
b
Natural selection
c
Biology
d
Variation
Can you please tell me step one and step two?
Answer:
1) DNA unzips and unwinds
2) A gene in DNA....
Explanation:
TUECOLOR
4. Which term best describes the diet of a primary consumer?
a. Detritivore
b. Omnivore
c. Carnivore
d. Herbivore
HELP PLEASE ILL MARK BRAINLIST
Answer:
D. herbivore
Primary consumers are always herbivores
is algae multicellular or unicellular?
unicellular
multicellular
Answer:
The answer is unicellular
HELP PAST DUE AND NO WEBISTES/ FAKE LINKS
your own words: how does the temperture affect the denisty of the water? DO NOT COPY AND PASTE FROM THE INTERNET OR YOUR REPORTED!
Match the answer in the correct space
⚠️please help me⚠️
Answer:
1. Hereditary
2. Gene
3. Allele
4. Trait
Do most mutations that are passed onto future generations come from the environment?
Answer:
If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation (a process known as natural selection). ... In addition, the environment in which a population of organisms lives is integral to the selection of traits.
Explanation:
Answer:
No. They come from genetics and DNA structure.
Explanation:
Sickle cell anemia illustrated in the picture below is the result of a mutation. What is the likely cause of this genetic mutation?
There's no picture.
Sickle cell anemia results from a mutation in a gene called HBB, which contains the blueprint for cells to make part of a protein called hemoglobin. The hemoglobin protein is made up of two alpha chains and two beta chains.
Sickle cell anemia is the result of a point mutation, a change in just one nucleotide in the gene for hemoglobin. This mutation causes the hemoglobin in red blood cells to distort to a sickle shape when deoxygenated. The sickle-shaped blood cells clog in the capillaries, cutting off circulation.
Follow Up Questions:
1. What is a dichotomous key?
Answer:
A dichotomous key is a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish. Keys consist of a series of choices that lead the user to the correct name of a given item. "Dichotomous" means "divided into two parts".
Explanation:
Answer:A dichotomous key is a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish. Keys consist of a series of choices that lead the user to the correct name of a given item.
Explanation:
For centuries, scientists believed that light waves traveled through a substance called "aether." Which of the following facts refutes this belief?
A.
Light waves can propagate through a vacuum.
B.
Aether has never been observed.
C.
Light waves can have many different wavelengths and frequencies.
D.
Light waves can travel extremely long distances.
bAnswer:
Explanation:
19. Use a Punnett Square to simulate a Bb x Bb cross between two flowers.
What is the probability that one of the offspring from that cross will have only the b factor:
a. 50%
b. 75%
c. 100%
d. 25%
25 % is the probability that one of the offspring from that cross will have only the b factor. So, the correct option is (D).
What is Punnett Square?
A Punnett square is defined as a specialized tool derived from the laws of probability that is used to predict the likely offspring from a cross or mating between two parents.
An example of a Punnett square which is shown in the attached image shows the results of a cross between two purple flowers, each with a dominant factor and a recessive factor.
Only one in four plants or 25% of the plants had white flowers (bb) containing only b while The other 75% have purple flowers (Bb, Bb), because the purple factor (B) is the dominant factor. This shows that purple color is the dominant trait in the plant.
Thus, 25 % is the probability that one of the offspring from that cross will have only the b factor. So, the correct option is (D).
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HELP ASAP I NEED THIS ANSWER!!! A scientist is observing a worm that was found inside a host. The worm has an outer body that is smooth and soft.
Which worm is the scientist least likely to be observing?
an earthworm
a pinworm
a hookworm
a tapeworm
Answer: A
Explanation: I took the test
Answer:
A cuz my notes say so
Explanation:
what organ only has chemical change
answer biology question below first correct answer gets brainliest
Question 2: Case 2
A young woman who was adopted at birth, comes into your office asking you to help her identify her birth father. She
already knows that the blood type of her birth mother is A positive. She knows her birth father is one of three men who are
willing to help in her search. Your first step is to do a blood test on the daughter. Your results show that she is type AB
negative. You make some phone calls and have the three possible fathers come in to give a blood sample. Here are the
results:
• Man #1 - O negative
• Man #2 - B negative
• Man #3 - AB positive
From this information, can you conclude who the father is? Is there anyone you can exclude? What tests could you do further
to confirm your analysis about who the father is?
Answer:
man3
Explanation:
help
→Do EM waves travel faster in denser matter←
good answers only, BAD ANSWERS GET REPORTED
Answer:
No
Explanation:
Electromagnetic waves travel slowest in dense matter such as solids. On the other hand, mechanical waves travel quickly through solids. For example, sound travels fastest through solids. This difference is because EM waves do not rely on the movement of particles to travel. Since they require no medium they can travel the fastest in space or other vacuums.
Give some example of microorganisms
ASAP
Answer:
some examples of microorganisms
Bacteria.
Archaea.
Fungi.
Protozoa.
Algae.
Viruses.
Multicellular Animal Parasites.
The nervous system is the major ______ system of the body.
A. output
B. control
C. transport
D. protective
Answer:
B. Control
Explanation:
In apples, which stage of growth is the most likely to be endangered by a frost at 28 degrees F?
dormant
budding
blossoming
fruiting
Answer:
blossoming
Explanation:
Explaining hardy Weinberg equilibrium and the eastern squirrel/ how many in the population have the following genotypes
Answer:
Above ans is not Correct.
A scientist is investigating the effects of electromagnetic radiation on plant growth. She wants to test the plants with two different types of electromagnetic waves: one with a very long wavelength and one with a very short wavelength. Ideally, the waves will have the greatest possible difference in wavelength. Which two types of waves should she choose?
A.
visible light waves and radio waves
B.
infrared rays and ultraviolet waves
C.
radio waves and gamma rays
D.
microwaves and X rays
Answer:
Explanation:c
What are the reactants in
photosynthesis?
Explanation:
Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants (Figure 5.5). After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose. These sugar molecules contain the energy that living things need to survive.
can I get a summary about A Day in the Life as a pediatrician?
Answer:
shearch it on You tube....you will sure find something
Is this correct. It's due in 5 mins HELP ME
Which of the following best describes the function of the human nervous system?
A.
The nervous system removes waste products from the human body through the excretion of sweat and urine.
B.
The nervous system breaks down large food molecules into smaller nutrients so that they can be transported around the body.
C.
The nervous system transports oxygen and nutrients to the cells of the human body through a system of nerve cells.
D.
The nervous system gathers, interprets, and responds to information about the body's internal and external environment.
