Answer:
horns and hooves
Explanation:
horns and hooves are made of kerotin, just like nails and hair.
Keratin is the protein that composes the external layers of the epidermis. It can be found in elements like feathers, nails, and hair. Other parts of the body that might be composed of keratin are horns and hooves.
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Keratin is a fibrous protein that can be found in epithelial cells that cover internal and external surfaces.
Keratin is the main component of horns, hooves, feathers, hair, and nails.
Horns are hollow and pointed structures that emerge from the skull of the animal.
Animals get born hornless. As they grow they develop these structures. Most of them complete the development near the reproductive stage of the animal.
At sexual maturity age, competitive interaction increases, and animals use them to defend themselves and hurt the opponent. Males of some species also use them to attract females.
Hooves are very developed nails that cover the ugunaltes' fingers. These animals only use the extreme of the fingers to walk.
Like all nails, hooves grow continuously and wears out as the animal walks or runs.
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Related link: https://brainly.com/question/11126296?referrer=searchResults
A old Cell is called what?
HELPPPPPP ASAPPPPPPPP HELPPPP
Answer:
it is C. Little to No agintation
Drag each tile to the correct box.
Sort the types of energy according to the order in which they move through this system:
Water stored in dams falls freely with the force to make a turbine move. The turbine moves and produces electricity. This electric energy is
supplied to homes. At home, we use electricity for heating, cooling, and lighting.
Put these in order:
Electrical energy
Light energy
Potential energy
Kinetic energy
Answer:
Electrical energy > kinetic energy > light energy > potential energy
Explanation:
Please help me ?!!!!
Answer:
the last one I am guessing
Explanation:
If right can you give me brainiest
Hope you have a wonderful day:)
How old do paleontologist believe the earth is?
Answer:
Scientists now know the Earth is actually 4.54 billion years old, an age built on many lines of evidence from the geologic record.
Explanation:
How many angels can dance on the head of a pin?
1This is a question that has been pondered over the centuries. Can it be answered using scientific method? Is it a scientific question?
The Goal of Science
2The goal of science is to answer questions about the natural world. Scientific questions must be testable. Which of these two questions is a good scientific question and which is not?
What is the age of our planet Earth?
How many angels can dance on the head of a pin?
3The first is a good scientific question that can be answered by radiometrically dating rocks among other techniques. The second cannot be answered using data, so it is not a scientific question. Which of the following would be considered a good scientific question?
SELECT AN ANSWER
A-Why do airplanes fly?
B-How much does a thermometer weigh?
C What is your favorite food?
D) How does size affect the speed of an object rolling down a hill?i
Answer:
D) How does size affect the speed of an object rolling down a hill?
Explanation:
i think
Which of the following are solutions to slow down groundwater depletion?
a -Landscape with native plants
b- promote the use of water resources
c- encourage population growth
d- develop crops that require more water
what product is left over after photosynthesis
Answer:
glucose/sugar
Explanation:
Hope this helps!
Answer:
Im pretty sure the oxygen is released from leaves while the energy contained within glucose molecules
Explanation:
A pathogen that feeds off and causes harm to other organisms is called what?
How does exercise build muscles?
Answer:
Exercise builds and strengthens muscles, which can protect the bones from injury, and support and protect joints affected by arthritis. Strong muscles also give stability and improve balance and coordination. Exercise also improves blood supply to the muscles and increases their capacity to use oxygen
Hope this helped!
If a double-stranded segment of DNA has been found to have 23 purines and 15 thymines, how many guanines are there?
Answer: 4 Guanines
Explanation: Following Chargaff's ratio that describes the ration of purines to pyrimidines as 1:1, if there are 23 purines, it follows that there should be 23 pyrimidines; 15 Thymines should therefore be hydrogen bonded to 15 Adenines by complementary base pairing.
We are then left with 8 nucleotides composed of guanines and cytosines in complementary base pairs. This means that half that number (4) should be guanines and the rest cytosines.
The DNA is a double-stranded molecule, which is made up of purine, pyrimidine, a pentose sugar, and phosphate backbone. Chargaff's rule states that any species will have a stoichiometric ratio of 1:1.
The number of guanines in the double-stranded DNA is 4.
In the DNA, the base pairing occurs as:
The guanines bind with cytosine through hydrogen bonding. The adenine binds with thymine with two hydrogen bonds.In the given nucleotide, there are 23 purines (guanine and adenine). There are 15 thymines in the DNA molecule. Based on the Chargaff rule, the 15 thymines will bind to adenine, leaving only 4 guanines and 4 cytosines. Thus, there will be 4 cytosines left to bond with the guanines to achieve Chargaff's ratio of 1:1.
Therefore, the guanine in the nucleotides will be 4.
To know more about Chargaff's rule, refer to the following link:
https://brainly.com/question/19156457
Having an accurate model of an atom is important except..
A. It can help give information on how atoms work.
B. We use the model to learn how to create new things.
C. Learning about atoms will help create better organisms.
D. It can help support the explanation of the origin of the universe.
How they worded this question does not make sense to me.
Answer:
I think the answer is D. but I'm not 100% sure.
Answer:
The answer to your question is going to be A.
Explanation:
It teaches us how atoms work. and it also gives us more information about how and what they are!!
plz mark me brainiest
Which is(are) a key role (or roles) of most family therapists?
When bonds are broken between atoms in molecules, energy is
a. stored as ADP
b. released
c. created
d. conserved
ANSWER: b. released
Explanation:
Cellular respiration is the chemical basis of how cells release energy from foods. When you eat an apple, your cells extract energy. The text below explains how cells use cellular respiration to extract energy from an apple. Choose the parts of the sentence that are incorrect.
The apple first enters the digestive tract through the mouth, where digestion begins with chewing. Enzymes begin to break down the apple in the mouth. From the digestive tract, the glucose from the digested apple is absorbed into the bloodstream, where it is brought to cells throughout the body. In the chloroplast, the glucose begins cellular respiration. The molecules react with carbon dioxide to release energy. Oxygen is produced as waste
Answer:
chloroplast is def wrong
Explanation:
it is mitochondria
if some can help me with my biology final the whole 25
Answer:
add the answers if you dont know
Explanation:
Answer:
KC is looking at cells in biology class, but he doesn't know where they came from. He sees that the cells under his microscope have cell walls and chloroplasts. Therefore, KC is likely observing cell from:
A leaf that got blown onto the floor.
Plant cells are the only cells w/ chloroplast!
Explanation:
pick me as the brainliest
the overall chemical equation that describes photosynthesis is below. By analyzing this equation, which property of photosynthesis can be identified
what are the choices
Explanation:
photosynthesis is a way that plants make their own food.
plz help me I will give brainlyest to first right answer
Answer:
Explanation:
1. Decomposition
2. Fungi
3. Evaporation
4. Precipitation
5. Condensation
6. Rhibizium
Answer:
1. decomposition
2. rhizoblum
3. evaporation
4. precipitation
5. condensation
6. fungi
bruising of brain tissue
Answer:
Cerebral contusion
Explanation:
a form of traumatic brain injury, is a bruise of the brain tissue. Like bruises in other tissues, cerebral contusion can be associated with multiple microhemorrhages, small blood vessel leaks into brain tissue. Contusion occurs in 20–30% of severe head injuries.
respiration in echinoderms
Would the movement of oxygen through the cells?
What is a coral reef made of?
A. Grass
B. Dead animals
C. Volcanic rocks
D. Sand
Answer: B. Dead animals
Explanation:
Coral reefs are made with calcium. How do they get this calcium? From the skeletons of various organisms in the ocean.
In starfish, the allele for brown coloring is dominant, and the allele for blue coloring is
recessive. For which parental genotypes are 100% of the offspring expected to be blue?
BB x bb
Bb x Bb
bb x bb
BB x BB
Answer:
C. bb x bb
Explanation:
B B B b
b Bb Bb B BB Bb
b Bb Bb b BB bb
100% Brown 75% Brown 25% Blue
B B b b
B BB BB b bb bb
B BB BB b bb bb
100% Brown 100% Blue
WILL MARK BRAINLIEST! :)
Diversity occurs in many places in meiosis. In what process is the first place where the pieces of DNA switch positions with the homologous sister chromatids?
A. Interphase
B.Independent Assortment
C. Crossing Over
D.Anaphase
E. Randomness of egg and sperm meeting
Answer:
crossing over
Explanation:
I had it on a bio exam. i got it right
5. The cells of multicellular organisms are"
1. The parts of the flower involved in reproduction are ________ and __________
2. The anthers bear the ___________the microspore mother cells give rise to _______or pollen grains after meiotic cell division.
Answer:
1. Stamen and pistil
2. Pollen, microspore
Explanation:
The flower is the reproductive part of certain plants called ANGIOSPERMS. They make use of their flower for sexual reproduction. The different parts of the flower work together to achieve a common goal, which is to reproduce, however, they do it in various ways. For example, accessory parts like petals attract pollinators. The major parts of the flower that are directly involved in the reproductive act are STAMEN (male) and PISTIL (female).
The stamen which constitutes a structure called ANTHER bears the pollen grains or microspore, which is made when the microspore mother cells undergo meiotic division. Hence, the pollens are released from the anther of a male flower (stamen), into the stigma of the female flower (pistil).
What structure provide shape and support for the cell?
A.Chloroplast
B.Mitochondria
C. cell Wall
D.Golgi bodies
The cell wall provides shape and support for the cell. Therefore, option (C) is correct.
What is cell wall?In the cells of plants, fungi, and some bacteria, the cell wall is a strong structure that encloses the cell membrane. It has a solid and strong structure because it is formed of chitin, which is found in fungi and cellulose in plants. The cell wall supports it mechanically, shields it from harm, and aids in keeping its shape. Moreover, it stops the cell from bursting or collapsing under pressure, which is crucial for plant cells because they must maintain turgor pressure in order to function properly.
Animal cells, on the other hand, lack a cell wall and instead contain a cytoskeleton formed of protein fibers that gives them stability and shape. Organelles that perform photosynthesis include chloroplasts, mitochondria, and golgi bodies, which also produce energy and process and transport proteins inside of cells.
Learn more about cell wall, here:
https://brainly.com/question/965751
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A _____ is the structure that contains the DNA of the cell.
A. Vacuole
B. Chromosome
C. Centromere
D. Centrosome
E. Centriole
The answer is chromosome
The chromosome is densly packed DNA.
Chemicals used in chemotherapy treatments to fight cancer can also harm cells in hair follicles and bone marrow.
What characteristic do these cels most likely share with cancerous cells?
O They form tumors.
O They spread through the blood.
• They divide rapidly.
O They contain a mutation.
A
Answer:
They divide rapidly
Explanation:
Some normal cells such as hair follicles cells, mouth cells, digestive tract cells, and bone marrow cells divide rapidly. In mammalians, hair follicle cells are cells localized in the skin, specifically in the dermal layer of the skin. In this region, epidermal cells that form the root of the hair divide rapidly by interacting with neuropeptides, hormones, and immune cells. On the other hand, the bone marrow is a spongy tissue found in bones that contain stem cells (which also divide rapidly). In consequence, it is well-known that high-dose chemotherapy treatments may damage these types of cells.
What TWO things cause denaturation of enzymes: