Answer:
Explanation:
The body's most important nonspecific defense is the skin, because it acts as a physical barrier to keep pathogens out. Even openings in the skin (such as the mouth and eyes) are protected by saliva, mucus, and tears, which contain an enzyme that breaks down bacterial cell walls.
4. What are three indicators of a chemical
change?
Answer:
Gas bubbles, color changes, production of light, volume change, or a change in smell or taste (p.s, don't lick the science).
I need help with this biology on the behavior of light.!
Answer:
A. Transmission
B. Reflection
C. Refraction
D. Diffraction
E. Absorption
F. Scattering
Answer:
A. Transmission of light
B. Reflection of light
C. Refraction of light
D. Diffraction of light
C. Absorption of light
D. Scattering
can an element be broken down
Answer:
Elements cannot be broken down into a simpler substance. Likewise, one element cannot be chemically converted into a different element. Chemical elements are the simplest of substances.
Explanation:
i just said this in the comments
An organelle that takes in sunlight energy, carbon dioxide, and water to make food for plants
a. Cell membrane
C. cell wall
b. Mitochondria
d. chloroplast
What happens to matter in an ecosystem
Answer:
I hope this helps hun :)
Explanation:
Matter is recycled in ecosystems. Any non living matter that living things need is called a nutrient. Decomposers release nutrients when they break down dead organisms.
Unlike green bacteria that produce oxygen, the purple bacteria performed a type of photosynthesis that produced sulfur. If the purple bacteria had outlived the green bacteria, how would Earth’s atmosphere be different today?
Answer:
Explanation:
About 21% of Earth's atmosphere is oxygen, and most of the rest is nitrogen. ... the evolution of Cyanobacteria, a group of single-celled, blue-green bacteria. ... Today, Cyanobacteria can be found almost everywhere on Earth — likely right ... the genetic machinery for photosynthesis that we'd expect to see if they had lost this ...
Answer:
The atmosphere would be rich in sulfur instead of oxygen.
Explanation:
It's the sample answer it's right.
which type of reproduction produces offspring with better characteristics ?
Answer:
Explanation:
Sexual reproduction is the best type of reproduction in which the offspring's have better characteristics and are able to cope up with the environment.
Which of the following systems does not play a role in maintaining your blood sugar levels?
a. digestive system
b. circulatory system
c. skeletal system
d. endocrine system (Involved in releasing hormones)
Answer:
C: Skeletal system
The digestive system, circulatory system, and endocrine system are all involved in maintaining your blood sugar levels.
Explanation:
Help with #11 please!!
Answer:
what ecosystem are yall talking about
Which Image is correctly labeled prokaryotic cell? A: Image 1. B: Image 2. C: Image 3.
D: Image 4.
Answer:
Image 3
Explanation:
Prokaryotic cells are single-celled organisms that lack membrane-bound organelles, including a defined nucleus.
The only cell without membrane-bound organelles is image 3
Image 1 is a single-celled eukaryotic organism, probably a paramecium.
Image 2 is a plant cell (has a cell wall)
Image 3 is a bacterium
Image 4 is an animal cell
What is the entire object shown in the image?
A. prokaryote
B. eukaryote
C. chloroplast
D. mitochondrion
Answer:
Chloroplast
Explanation:
The organelle is chloroplast because chloroplast is an organelle that contain chlorophyll which is a green pigment or photosynthetic pigment that the plant uses for photosynthesis. It captures light energy from sunlight and it has nucleus, stroma, thykaloids, RIBOSOMES, starch granules, granum, outer membrane e.t.c. it trap light energy from sun and engage in photosynthesis along with water and carbondioxide to produce starch.
2 A photograph shows a beetle 80 mm long. The magnification of the photograph is x 4. Calculate the real size of the beetle. (Remember to include the unit with your answer.)
How many protons does the atom of your element have?
Answer:
2.1 Electrons, Protons, Neutrons, and Atoms.
Explanation:
The majority of people in the United States work in the __________ industry.
Answer:
service industry
Explanation:
I think
Answer:
Service
Explanation:
the majority of people in the united states work in the: service industry Following the development of technology (such as smart phone and internet) , the service industry has provided the most job opportunities for American people, since every consumers want to conduct their business remotely and efficiently
Functions of synapse
Answer:The function of the synapse is to transfer electric activity (information) from one cell to another. The transfer can be from nerve to nerve (neuro-neuro), or nerve to muscle (neuro-myo)
What are the potential effects of a
symbiotic relationship on an
organism?
A symbiosis is an evolved interaction or close living relationship between organisms from different species, usually with benefits to one or both of the individuals involved.
Compare the size and shape of an animal to one or more objects
What kind of animal? And what minimum
no What cell type has no membrane-bound organelles, has a single unbound chromosome, and is very small?
A Eukaryotic cell
B Prokaryotic cell
C Animal cell
D Plant cell
Answer: Option B
Explanation:
Both animal and plant cells are eukaryotic cells. Membrane bound organelles are a characteristic feature of eukaryotic cells. Prokaryotic cells however do not posses membrane bound organelles and this is the answer to this question.
Both animal and plant cells are eukaryotic cells. Membrane bound organelles are a characteristic feature of eukaryotic cells.
What are Membrane bound Organelles?Prokaryotic cells however do not posses membrane bound organelles.
The nucleus is frequently referred to as the eukaryotic cell's command center. This is so because it has the knowledge required to produce proteins.
Because every component of the cell need proteins to function, the nucleus regulates the actions of the other organelles by housing the genetic instructions for making proteins.
Therefore, Both animal and plant cells are eukaryotic cells. Membrane bound organelles are a characteristic feature of eukaryotic cells.
To learn more about organelles, refer to the link:
https://brainly.com/question/2135497
#SPJ2
Heat shields on a space craft are necessary when it reenters the earth’s atmosphere because at the high speed of entry air will
_________.
Answer:
burn
Explanation:
Which type of skin cell has a lifespan of four days?
A. skin
B. brain
C. colon
D. heart
What type of cells have a high concentration of mitochondria?
Answer:
It is important to point out that muscle cells have a very high concentration of mitochondria that produce ATP. Your muscle cells need a lot of energy to keep your body moving. When your cells don't get enough oxygen, they do not make a lot of ATP.
Explanation:
Muscle cells have a high concentration of mitochondria.
Regulation of metabolic enzymes in skeletal muscle occurs in response to changes in ATP demand, substrate availability, and in response to hormonal and neural stimulation.
The muscle fiber is an elongated cell whose length can reach several centimeters.
The sarcoplasm of a muscle fiber contains many mitochondria.
They are those that produce energy (ATP) directly usable by the muscle fiber to contract its myofibrils, which are the contractile elements of skeletal muscle cells.
Therefore, we can conclude that adenosine triphosphate (ATP) is the basic source of energy for muscle contraction is ATP and muscle cells have a high concentration of mitochondria.
Learn more here: https://brainly.com/question/7037840
Ecology webquest
1) Explain how the last food chain represents a full circle of life.
2) Diagram the water cycle
3) Write three to five sentences describing what you learned:
Answer:
1) At each link in the chain, energy is being transferred from one animal to another. ... So food chains make a full circle, and energy is passed from plant to animal to animal to decomposer and back to plant! There can be many links in food chains but not TOO many
2) Collection.Evaperation .Condesation. Precipitation
do you think you can help me?
Answer:
solid
Explanation:
Answer:
solid
Explanation:
because ice is waters solid form
what is the basic building block of all living things ?
Answer:
Cells are the basic building blocks of living things.
Explanation:
The human body is composed of trillions of cells, all with their own specialized function.
Answer:
cells
Explanation:
Please help I do not know the answer to this question
Answer:
A
Explanation:
Mitochondria have an important role in cellular respiration through the production of ATP, using chemical energy found in glucose and other nutrients. Mitochondria are also responsible for generating clusters of iron and sulfur, which are important cofactors of many enzymes.
What is respiration?
Answer:
Respiration is the act of respiring; inhalation and exhalation of air; breathing. the sum total of the physical and chemical processes in an organism by which oxygen is conveyed to tissues and cells, and the oxidation products, carbon dioxide and water, are given off.
in other words
a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.
what does a culture medium provide to a liviing cell
Do you think that it is important that we understand more about Prochlorococcus?
Answer:
despite prochlorococcus being on of the smallest type of marine phytoplankton/bacteria in the worlds ocean its substantial number makes it responsible for a major part of the oceans and the worlds photosynthesis and oxygen production
hope this helps✌
Andrea wants to measure how far each of her classmates can throw a heavy ball
I need a picture gurlii to answer
answer:
i truly want to help you but i can't! aghhh there is no pic :( sorry
What how are the functions of organelles similar to organs? Give 1 example.