Answer:
every muscle cell of the motor unit is stimulated to contract.
Explanation:
Stimulus in biology can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.
In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ. Therefore, the senses are necessary for behavior because stimuli must be sensed in order to respond.
Stimulus control can be defined as a phenomenon that arises when a living organism responds or behaves in the presence of a stimulus and in another way in the absence of a stimulus.
For example, opening the door of a microwave oven as soon as its timer beeps.
Example II; When your body touches a hot object, you quickly move away and feel some pain subsequently.
Action potentials generates the nerve impulse in a motor neuron.
When an action potential is generated within a motor neuron, every muscle cell of the motor unit is stimulated to contract.
A student keeps an onion bulb in a jar filled with water and observes that the roots continue to grow in length. The student cuts a root tip and observes it under a microscope. The image shows the observations. Which option supports the reason for an increase in the root’s length?The root cells undergo meiosis to expand and increase in length.
The root cells undergo mitosis to combine together to make the root grow.
The root cells undergo mitosis to form new identical cells.
The root cells undergo meiosis to form different types of cells.
Answer:
The root cells undergo mitosis to form new identical cells.
Explanation:
Mitosis is the process of cell division, where a cell divides into two equal cells with the same number of chromosomes. These new cells are used to promote the growth of a biological structure, promoting an elongation, a replacement, a concert, or an increase in volume. This can be seen in the case of the growth of the tip of the onion root, where the cells underwent mitosis, forming equal cells, to promote the growth of a new tip.
A scientific _______ is an explanation based on many observations by many different researchers.
A scientific _______ is usually an explanation based on one observation by one researcher.
A.
theory; hypothesis
B.
deduction; inference
C.
hypothesis; theory
D.
inference; deduction
Answer:
A
Theory
Hypothesis
I hope this helps
_____ form scar tissue and surround foreign material in the body.
Answer:
Fibroblasts form scar tissue and surround foreign material in the body.
Answer: Fibroblasts form scar tissue and surround foreign material in the body.
How does a catalyst work?
Answer:I’m guessing in “your own words” so here goes nothing: Catalysts work by giving an (elective) system including an alternate progress state and lower initiation energy.
Explanation:
What are the possible consequences of genetic mutations?
1. Incomplete Protein
2. Poorly functioning protein
3. No change
4. Cancer
on-
0 1-4
O 3
O 1 & 2
04
O 2
O 1, 2, & 4
Answer:
1-4
Explanation:
Genes code for proteins through transcription and translation. Each three nitrogen base sequence of a gene encodes for a specific amino acid. The long chain of amino acids come together to form a protein Mutations to genes can cause coding of incomplete proteins, poorly functioning proteins, no change or cancer.
Oxygen gas production will happen within me
Answer:
Almost all the oxygen you breathe comes from green plants. They produce oxygen during a process called photosynthesis. During photosynthesis green plants manufacture the sugar molecules fructose and glucose. Green plants use energy from sunlight to build sugar molecules from carbon dioxide and water.
Plant cells contain organelles called chloroplasts that are essential for photosynthesis. Within chloroplasts, oxygen gas production will take place. So, the answer is chloroplast.
Plants use sunlight, water, and carbon dioxide to produce oxygen and sugar-based energy through a process known as photosynthesis. The process of photosynthesis results in the emission of oxygen gas.
Photosynthesis and release of oxygen processes occur within chloroplasts that generate energy that support plant growth and crop yield.
Although mitochondria are organelles that can be found in plant cells, they do not produce oxygen. Cellular respiration is carried out by mitochondria. Although cellular respiration consumes oxygen gas, it does not create oxygen gas.
Therefore, chloroplasts is the answer to the question "Oxygen gas production will happen within."
Learn more about chloroplasts here;
https://brainly.com/question/11136550
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The given question is incomplete, the complete question is:
"Oxygen gas production will happen within?"
in the plasma, ___ with platelets to form blood clots. A. Hemoglobin interacts. B. Lymph interacts. C. Red blood cells interact. D. White blood cells interact
Answer:
C. Red blood cells interact. ........
Would appreciate if somebody helped please.
Answer:
its the last one
Explanation:
YO PLZ HELP ME!!!!!
Fill in the blank(s):
A nerve ____________________ is an electrical signal that flows through the nervous system
Answer:
I agree with the other person who answer
have a good day :)
Explanation:
how do flowering plants reproduce asexually and sexually?
Answer:
Plants reproduce sexually by dropping pollen into another flower. This pollen can go into a flower or, it can drop to the grass. That's when asexual reproduction comes in. The ground absorbs the pollen and the pollen acts like a seed, making a new plant.
See the attached picture if you wanna know what pollen looks like.
Curly hair (C) is dominant where straight hair (c) is recessive. If a person who is CC were to have children with a person who is cc, could it be possible for them to have a child with straight hair?
a
yes
b
no
Answer:
No, it would not be possible to have a child with straight hair.
Explanation:
The Punnett cross would be CC x cc, so all the offspring would be Cc. Since straight hair is only cc, the kids would not have straight hair.
Awnser:
yes, it is possible :)
Explanation:
Their children would would have the dominant trait, curly hair, and the recessive straight hair gene hidden in their dna. If there was a chance that one of their curly haired children met with a cc-partner with straight hair, then they would have a 1 in 2 chance. Even with a Cc-partner, there would be a 1 in 4 chance of the straight hair trait "skipping a generation".
Think about the meaning of these words fruit seed germinate cotyledons, embryo ,plumule ,dormancy,root hairs. Write a sentence containing each of these words
Answer:
When a seed, taken from a fruit, is planted and watered under the correct temperature, it breaks dormancy, and the embryo germinates; first, the root grows covered by root hairs, then the cotyledons appear, and finally, the plumule elongates to reach the light.
Explanation:
Fruit: It forms by the mature ovary of the flowers. This structure contains and protects the seeds in its interior. Its principal function is to transport seeds to a distant area away from the parental plant and let the new plant emerge under the correct environmental conditions. The fruit develops different strategies to accomplish its function. Seed: Refers to the fecundated and mature ovule. This structure is the typical dissemination and dispersion unit of spermatophyte plants. Seeds are formed of three tissues. An embryo. A seminal tegument that covers and encloses the latent embryo. And the endosperm -a nutritious tissue-. Seeds develop and grow under the protection of the fruit body. Embryo: It is formed after fecundation. It composes of growing cotyledons, an epicotyl, and a hypocotyl. The tegument and endosperm of the seed protect the embryo from dehydration and denutrition. Once the seed is in the correct place, the embryo grows and emerges. Cotyledon: The two first leaves of the embryo. They have reserve nutritive tissues to help the embryo grow. It also performs photosynthesis. The embryo usually develops one or two cotyledons and one radicule or root hair. Plumule: First shoot of the young emerging plant. When the embryo is growing, it elongates to reach more sunlight. Root hairs: Extention of the roots´ cells that look like hairs and whose principal function is to absorb nutrients and water from the ground. They can be found in the maturation area of the root. Germination: Process of development and the emergence of the embryo. These are a series of steps that must occur in the seed from the moment the embryo begins to develop until a newly emerged plantule is formed. For germination to occur, there must be the appropriate environmental conditions. Dormancy: Period in which an alive seed can not germinate because there is a condition inside the seed that does not allow germination to occur yet. The seed is in dormancy, but it keeps viability.
How does the chemical reaction of ethanol burning relate to the matter and chemical changes that occur in the body when a person exercises?
Adolescents should be careful about what they eat , beacuse
Explanation:
(i) proper diet develops their brains. (ii) proper diet is needed for the rapid growth taking place in their body. (iii) adolescents feel hungry all the time.
why is it important that a cell membrane contains opening into the cell a the opening allows chemical such as oxygen and other nutrients into the cell b the opening will allow the cell to grow larger see the openings are only used for carbon dioxide to leave the inside of the cell the opening in the cell membrane allows DNA to come in and out of the cell
Answer:
Explanation:
Cells generate energy from the controlled breakdown of food molecules. ... View Terms of Use molecules that other cells rely on for the energy required to sustain growth, metabolism, ... proteins that span the cell membrane permit specific molecules into the cell, Figure 2: Cells can incorporate nutrients by phagocytosis.
Answer:
Why is it important that the cell membrane contains openings into the cell?
A. The opening allows the cell to grow larger.
B. The openings are only used for carbon dioxide to leave the inside of the cell.
C. The openings in the cell membrane allow DNA to come in and out of the cell.
D. The opening allows chemicals such as oxygen and other nutrients into the cell.
Explanation:The answer is D.
What body shape do typical jellyfish have?
Polyp
Medusa
Reef
Disc
Answer:
Medusa
Explanation:
Medusa, in zoology, one of two principal body types occurring in members of the invertebrate animal phylum Cnidaria. It is the typical form of the jellyfish. The medusoid body is bell- or umbrella-shaped.
Answer:
Medusa
Explanation:
it is the typical form of the jellyfish
I need help right now please help look at the screenshot
Answer:
1. It is a biography because it gives important info and it is not first person. 2. The text feature is a caption.
3. He found the main words from "The Rolling Squads" and the author probably used this title because he was often told that him be paralized would be a problem and he still does basketball.
4. I'm not sure about this one, but I guessing that there is no law that stops him proving that even though he is paralized, he can still do things.
Hope this helps! I tried my best on this one :)
Explanation:
I made this not you </3
Don't even copy it.
PLZZZZZ HELPPPPPPP!!!!
Neurons have long projections to transmit impulses. What is the name of these projections?
Answer:
Answer:
Axon
Explanation:
An axon is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body or soma.
Can I have brainliest, when someone else answers?
Answer:
I agree with the other person who answer
have a good day :)
Explanation:
Why is Canada's Actions Plan on climate change important? (Please help)
Can you please help me with this?
Answer:
The population of peppered moths thrived, because they camouflaged with the bark of the trees, thereby they were not easily seen by predators. Black moths were easily seen by predators and they were eaten as a result. Because the black moths did not survive, they were unable to reproduce offspring with those traits. However, peppered moths were able to reproduce offspring that were also peppered. During the industrial revolution, the colour of the bark darkened. This meant the peppered moths were easily seen by predators, so they were eaten. Black moths camouflaged with the bark, so now they weren't easily seen by predators. Now that the black moths survived, they could reproduce more black moths. But peppered moths weren't able to reproduce more peppered moths because most didn't survive. This is an example of how an abiotic factor, such as bark can affect a population of a species. Because the bark influenced the survival of the moths, some moths with the desirable traits survived, and others with the undesirable traits died.
Which category of tissue (epithelial, nervous, muscle, or connective) is melanin part of?
Answer:
Melanin is part of the epithelial
sample 1
sample 2
sample 3
sample 4
Answer:
Sample 1
Explanation:
Dna contains carbon, hydrogen, oxygen, nitrogen, and phosphorus. These make up the sugar-phosphate backbone of the DNA also known as the sides of the ladder.
Movement of chromosome segment to a non-homologous chromosome. This type of chromosomal mutation occurs when one chromosome swaps genetic information with a different chromosome (this is NOT Crossing Over). O Inversion O Duplication O Deletion O Translocation
Answer:
The correct answer is ''Translocation.''
Explanation:
Translocation is a chromosomal abnormality that is due to a change in position of a chromosomal segment to another non-homologous chromosome of the same nucleus or to another part of it. It is produced by the exchange of segments between two chromosomes without loss of genetic material is called reciprocal or balanced translocation, when it gives rise to monocentric chromosomes.Translocations can be detected cytologically because the structural heterozygote forms a quadrivalent (4-chromosome association) in meiotic prophase. Sometimes they can also be detected by changes in the size of the chromosomes if the exchanged segments are of different lengths.
Which of the following has been proven true by researchers of identical twins?
a. Identical twins have different personality genes.
b. Identical twins are never the same gender.
c. Identical twins share the same DNA and blood type.
d. Identical twins are no more alike than fraternal twins.
Answer: B. Blood Type
Explanation: Got it right on edge
The starfish's water-vascular system is used for locomotion and capturing food. True/False
Answer:
true
Explanation:
Using the diagram above, answer the following questions: 6. True or False. The arrow labeled C represents a transfer of chemical energy to mechanical energy. Explain why this is true or false. 7. True or False. The arrow labeled A represents a transfer of solar energy to chemical energy. Explain why this is true or false. 8. Which arrow or arrows represent a release of carbon dioxide? What process is occurring at the arrow(s) you selected? 9. Which arrow or arrows indicate a process that cycles carbon from living or nonliving organisms? Describe the process or processes you selected. 10. Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer.
Most biology textbooks prior to 1990 listed the major function of ribonucleic acid (RNA) as transferring information from DNA to make proteins. In late 1989, Thomas Cech proposed that RNA had a second major function: as a catalyst for chemical reactions that occur inside the cell. His discovery surprised most scientists and caused the rewriting of many chapters in biology textbooks. What aspect of the scientific process does this best illustrate?
Answer:
The correct answer would be - overgeneralization of a hypothesis.
Explanation:
In this case, the scientist uses to think and listed the transferring information from DNA to make proteins as the main and major function of the RNA until Thomas Cech proposed that it is the second most important catalyst that takes place in the cell and catalyzes cell's chemical reactions.
This illustrates major aspects of the scientific process: overgeneralization of a hypothesis as RNA is not just a molecule that assists and transfers the information but new evidence found it has catalytic activity also.
Why would the presence of oxygen bubbles be a good indicator of photosynthesis occurring?
Answer:
When plants photosynthesize, they produce oxygen.
As you grow older, you will need to remain physically active to keep a good level of physical fitness.
Please select the best answer from the choices provided.
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The load is the pivot point of a lever. true or false
Answer:
False the right answer would be the fulcrum.
Explanation:
Your welcome<3
Answer:
Fasle
Explanation: