In the early days of life on Earth, plants were exposed to extremely high doses of ultraviolet radiation. Constant UV exposure resulted in some land plants developing narrow leaves with thick, waxy cuticles. Over many, many generations, these narrow leaves evolved into needles.
Answer:
so, what is the question?
Explanation:
What is electrical energy?
Answer: energy derived as a result of movement of electrons. When used loosely, electrical energy refers to energy that has been converted from electric potential energy.
Explanation:
why was domesticating and confining animals so important to the food supply of early civilization
Answer:
Image result for why was domesticating and confining animals so important to the food supply of early civilization
Throughout history, people have bred domesticated animals to promote certain traits. Domestic animals are chosen for their ability to breed in captivity and for their calm temperament. Their ability to resist disease and survive in difficult climates is also valuable.
Explanation:
Domestication of animals help the humans in many ways for eg; Cows and goats gave them milk and meat , Cattle also helped them in ploughing the fields also Cattle and sheep are kept for their wool, skins, mea,t and milk, large animals can also be used to do physical work like carrying things or plowing the field
Which of the following statements are true about antibodies?
A. Polyclonal antibodies are part of the natural immune response; monoclonal antibodies are clones of plasma cells used for medical research.
B. Polyclonal antibodies are used for the treatment of cancer; monoclonal antibodies are used for medical research.
C. Monoclonal antibodies work against many types of antigens; polyclonal antibodies work against a specific antigen.
D. Both Polyclonal and Monoclonal antibodies are naturally produced in immune responses.
Answer:
The answer are A and D.
Explanation:
ANTIBODIES
Antibodies are immunoglobulin produced in the body by B cells to help i
For immune response or fight against any foreign invade in the body.
There are two common classification of antibodies and these are;
1. Monoclonal antibodies are produced in the laboratory that can help to restore and improve the immune system against cancer attack.
They bind to the antigens and are many on the surface of cancerous cells than normal cells. They are use for medical research.
2. POLYCLONAL ANTIBODIES are produced by different B cells the body. They are produced from heterogeneous molecules in live animals. They can bind to numerous antigens. They are part of the natural immune response of the animals. They are produced by injecting the animal with immunogen.
Therefore, Polyclonal antibodies are part of the natural immune response; monoclonal antibodies are clones of plasma cells used for medical research.
Both Polyclonal and Monoclonal antibodies are naturally produced in immune responses
Answer:D
Explanation:
D
Due RN pls help!!!
Summarize the nervous system’s influence on the respiratory system.
a. It stimulates pathogen response.
b. It regulates breathing rate.
c. It controls muscle contraction.
d. It regulates heart rate.
Answer:
C
Explanation:
It controls muscle contraction
Answer:
C
Explanation:
Breathing pretty much requires complex interactions of central nervous system with the respiratory system. Therefore as you breathe muscle contraction occurs making the nervous system and respiratory system work hand in hand.
hope this makes sense.
:)
You are overseeing a paleontological expedition at the Grand Canyon to uncover fossils. You have one group working about 10 feet above the bottom of the canyon,
uncovering a cluster of Brachiopods You have a second group working about 300 feet above the bottom of the canyon, uncovering impressions from a variety of plants
such as fems and horsetails. While you are waiting for the exact age of the rock layers to be determined, what can you tell about the age of the fossils based on
where they are
A. You cannot determine anything yet.
B. They are all about the same age.
C. The plants must be older than the Brachiopods.
D. The Brachiopods must be older than the plante
Answer:
C
Explanation:
because the plants are farther down lol
Paleontology establishes the geological age of the organisms. Based on the height of the fossils discovered at the Grand Canyon, it can be concluded that plants were older than the Brachiopods. Thus, option C is correct.
What are fossils?The dead remains and decaying materials of the plants and animals stored and preserved under the sediments and rock layers over a period of many years are said to be called fossils.
The fossils are evidence of the evolution as well are used to determine the geological age of the species based on their occurrence of them in the rock layers.
The fossils of plants like horsetails and ferns were found 300 ft above the Canyon while Brachiopods at 10 feet above Canyons that tell that plants were found earlier than the former species.
Therefore, option C. the plants existed prior to the Brachiopods.
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differences between regolith and bedrock in 5 points
Answer:
Explanation:
Bedrock is the hard, solid rock beneath surface materials such as soil and gravel. ... Bedrock also underlies sand and other sediments on the ocean floor. Bedrock is consolidated rock, meaning it is solid and tightly bound. Overlying material is often unconsolidated rock, which is made up of loose particles.
Regolith is a blanket of unconsolidated, loose, heterogeneous superficial deposits covering solid rock.
what do you mean by bacteria?
Answer:
Bacteria is a type of micro-organism and is also a prokaryote. These organisms can only be seen using a microscope. Some bacterias are harmful while some are helpful for human daily lives, such as probiotics, and are necessary for life. They have simple cell structures as there is no nucleus or membrane-bound organelles. Bacterias can be found in soil, water, plants, animals, etc. They can cause diseases such as Tuberculosis etc. Due to some diseases being caused by bacterias, doctors prescribe Antibiotics which has the ability to stop the activities in bacterial cell that causes it to lose its protective outer covering and completely stops it from multiplying.
Answer:
Bacteria are among the smallest living things. A single bacterium consists of just one cell, and is called a single-celled, or unicellular organism.
Even though it is just a single cell, it can carry out all seven life processes (movement, respiration, sensitivity, growth, reproduction, excretion and nutrition).
Question 10(Multiple Choice Worth 1 points)
(04.05 LC)
Which of the following elements makes up the tissues and organs of animals?
O Carbon
Hydrogen
Nitrogen
O Oxygen
Which timeline best shows the history of the development of cell theory?
Which organelle is most like a factory delivery driver?
lysosome
endoplasmic reticulum
cytoplasm
nucleus
Answer:
Cytoplasm
Explanation:
Hope it helps :)
what is the difference between animal and plant tissues
Answer:
1) Plant tissue has a stationary phase.
2) They do not necessitate a large amount of energy
3) They have more dead cells because mechanical energy is produced.
4) They are capable of preparing their own meals
5) They are divided into two categories: meristematic and permanent tissue.
Tissue from animals:
1) They're at the locamative stage.
2) They need a significant amount of energy
3) They have a higher number of live cells.
4) They are unable to produce their own food and must rely on other organisms.
5) They are classified into four types: epithelial, connective, muscular, and nervous tissue.
1
R:
2
R:
3
R:
4
R:
5
R:
Answer:
can you click a photo again
The results of an investigation are the
Answer:
dependent variable or conclusion
what is photosynthesis???
the process green plant taking food from sun light is called photosynthetis
Answer:
Photosynthesis is a process through which plants and other organisms transform light energy into chemical energy, which is then released to power the organism's metabolic processes through cellular respiration.
~OAmalOHopeO
You observe a cell in a stained section of connective tissue. The cell has an indented nucleus and obvious cytoplasmic granules. Upon further testing, you determine that the granules contain histamine. This cell is most likely a(n) _____. Multiple choice question. mature neutrophil mast cell eosinophil B cell
how does a single cell give rise to all the different types of cell, tissue, and organs in human body
Answer:
Over the course of hours, days, or months, the organism turns from a single cell called the zygote (the product of sperm meeting egg) into a huge, organized collection of cells, tissues, and organs. As an embryo develops, its cells divide, grow, and migrate in specific patterns to make a more and more elaborate body.
I HOPE THIS WILL HELP YOU IF NOT THEN SORRYHAVE A GREAT DAY :)
In the rock cycle, if any type of rock is broken down into little pieces, it changes into ______ rock.
Answer:
small rock
Explanation:
hope it's helpful
what are quantities? Give any two example.
Answer:
Physical quantities that are derived from one or more fundamental physical quantities are called derived physical quantities. Examples: area, volume, speed, density , etc.
Explanation:
Hope this helps. Have a nice day^_^
A newborn that is SGA would be at risk for which of the following complications?
I. Diabetes
II. Obesity
III. Shoulder Dystocia
IV. Heart Disease
A newborn that is SGA would be at risk for suffering from Diabetes or Hypoglycemia (Option I).
What is diabetes?Diabetes is a disease where the individual cannot control the levels of glucose in the blood.
A newborn that is Small for Gestational Age (SGA) shows an increased risk of suffering from Hypoglycemia due to the lack of control of glucose in blood.
In conclusion, A newborn that is SGA would be at risk for suffering Hypoglycemia (Option I).
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which of the following best describes the anthers of a flower?
Answer:
The anthers of a flower are the Male reproductive organ on the top of the stamen, which produce pollen.
Explain how various animal species have rapidly evolved as a result of human impact.
Answer:
Numerous examples of this human-induced contemporary evolution have been reported in a number of 'contexts', including hunting, harvesting, fishing, agriculture, medicine, climate change, pollution, eutrophication, urbanization, habitat fragmentation, biological invasions and emerging/disappearing diseases.
Explanation:
Which of the following species is Endemic?
A. Geese on the East coast of the US
B. African elephants at the zoo
C. Invading Japanese beetles found eating crops in North American farms
D. Lemurs isolated to the island of Madagascar
Answer:
D. Lemurs isolated to the island of Madagascar
Explanation:
Endemic is to be native and restricted to a certain place.
Endemic species are organisms that are limited and confined to a particular region. Lemurs show endemism as they are isolated to the island of Madagascar. Thus, option D is correct.
What is Endemism?Endemism is a biological term used to depict the distribution of the organism in an area that becomes its habitat. It is shown by species that are limited and bounded to one geographical location.
Endemism is shown by the species due to genetic isolation that separates the population or the species in a geographical area and does not allow the genetic material to exchange by reproduction.
Koalas and Kangaroos in Australia, Lemurs in Madagascar, lion-tail macaque and Nilgiri blue Robin in India, and camellia plant in Japan are some endemic species.
Therefore, option D. the Lemurs in Madagascar are an example of endemic species.
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Why are NADH and FADH2 necessities in the electron transport chain?
They power the electron transport chain.
They remove electrons from the electron transport chain.
They move down the electron transport chain.
They move electrons to the electron transport chain.
Answer:
D). They move electrons to the electron transport chain.
Explanation: Just took the quiz
NADH and FADH₂ are necessities in the electron transport chain because: They move electrons to the electron transport chain. (Option D)
NADH (nicotinamide adenine dinucleotide) and FADH₂ (flavin adenine dinucleotide) are molecules that play a crucial role in the electron transport chain (ETC) of cellular respiration. These molecules are electron carriers that are generated during earlier stages of cellular respiration, such as glycolysis and the citric acid cycle.
In the electron transport chain, NADH and FADH₂ donate the electrons they have gained from the breakdown of glucose and other molecules. These high-energy electrons are then passed along a series of protein complexes embedded in the inner mitochondrial membrane. As the electrons move through these protein complexes, their energy is used to pump protons (H+ ions) across the inner mitochondrial membrane, creating a proton gradient.
The proton gradient generated by the movement of electrons is used to drive the enzyme ATP synthase, which synthesizes ATP (adenosine triphosphate) from ADP (adenosine diphosphate) and inorganic phosphate. This process is known as oxidative phosphorylation.
In summary, NADH and FADH₂ are essential in the electron transport chain because they provide the high-energy electrons needed to establish the proton gradient, which ultimately powers the synthesis of ATP through oxidative phosphorylation.
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Briefly explain how sexual reproduction generates new allele combinations in offspring.
__plants important adaptation of the seed allowed plants to__
A. Non vascular, grow in underwater environments
OB. Angiosperm, attract pollinators
C. None of these
D. Gymnosperm, spread quickly across the land
Answer:
C
Explanation:
Non vascular plants reproduce by spores or other asexual means
Attraction of pollinators is not an adaption of the seed. In angiosperms the colorful petals attract pollinators.
adaptations of seeds is their ability to store food, be dormant for preservation. They do not adapt to spread across the land via Gymnosperms. seeds can spread around via animals who eat the fruit and move from place to place. Gymnosperms do not produce flowers, so they don't have fruits. Though wind may blow their seeds, it's still not an adaptation.
Gymnosperm plants important adaptation of the seed allowed plants to spread quickly across the land.
So, option D is correct option.
Non vascular plants reproduce by spores or other asexual means.Attraction of pollinators is not an adaption of the seed. In angiosperms the colorful petals attract pollinators.The seeds spread around via animals who eat the fruit and move from place to place. Gymnosperms do not produce flowers, so they don't have b. Though wind may blow their seeds, it's still not an adaptation.What is adaptation?It is biological mechanism.In this organisms adjust to new environment or changes in their surroundings.Example: Plant called succulents adapted to climate by storing water in their shorts, thick stem and leaves.Learn about adaptation,
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what is combine? How does it makes harvesting easier
Answer:
Cereal crops are gathered in by the header at the front, which has a pair of sharp pincers called crop dividers at either end. Generally speaking, the wider the header, the faster and more efficiently a harvester can cut a field.
Explanation:
Answer:
I HOPE YOU WILL HAVE A SWEET DREAM .
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Why do doctors have to check what blood type a person has before receiving a
transfusion?
0
A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
B. Different blood types have different antigens that will be attacked by someone with
antibodies against that blood type.
C. Your blood type doesn't matter as long as you get the correct amount of blood in a
transfusion.
O
D. They need to have the same blood type because their DNA must be similar enough to
blend or will cause side-effects and possibly be rejected.
Answer:
A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
list any 6 medical plants
Answer:
Explanation:
The 6 medical plants are :
1. Chamomile. (Flower) Considered by some to be a cure-all, chamomile is commonly used in the U.S. for anxiety and relaxation. ...
2. Echinacea. (Leaf, stalk, root) ...
3. Feverfew. (Leaf) ...
4. Garlic. (Cloves, root) ...
5. Ginger. (Root) ...
6. Gingko. (Leaf) ...
Which of the following are most likely to be listed as common climatic effects in inner-urban areas?
cold spots
frost pockets
heat islands
temperature zones
Answer:
temperature zones i guess
Explanation:
cause we all know how much climate will change the much thicker ozone layer will be and comparing to last summer this summer is tempting hot so i guess its tempersture zones
Answer:
heat islands
Explanation:
i did it and got it right!!
Question 4
What happens to the host cell at the end of the lytic cycle?
the cell breaks open and releases the new viruses
viral DNA combines with host DNA
the host cell divides normally and reproduces viral DNA along with it's own
new viruses are made inside the bacterial cell
Answer:
In the lytic cycle, a phage acts like a typical virus: it hijacks its host cell and uses the cell's resources to make lots of new phages, causing the cell to lyse (burst) and die in the process.
Explanation:
Hope this helps.
