Answer:
The Brain
In the brain, the cerebrum is the largest part; it controls voluntary movement (actions you choose to do), sensory processing (vision, hearing, smell, taste, touch), speech, memory, intelligence, and emotion. The cerebrum allows you to move your muscles and know what to do when you're playing. Next, the cerebellum helps regulate motor control, coordination, and balance. The cerebellum lets you play your favorite sport since it detects shifts in balance when you're moving then sends signals to your body so it can adjust and move smoothly. The brain stem has several necessary functions: however, the medulla oblongata, which connects the brain and spinal cord, best helps you play sports since it executes a critical role in regulating involuntary functions, including respiration (breathing), heart rate, blood flow/pressure, and digestion. It is essential when exercising since it controls your heart to pump blood and deliver oxygen throughout your body; respiration provides the energy you need when playing sports and oxygen to your heart.
Neurons
However, we can go into further analysis, as three types of neurons transmit information throughout your body: sensory neurons, interneurons, and motor neurons. Sensory and motor neurons are located in the PNS (Peripheral Nervous System), while the CNS (Central Nervous System) holds the interneurons.
When you react to something, your body decides what it should do by sending impulses throughout the body.
Sensory Neurons
First, sensory neurons convey the information from the sensory organs (PNS) into the CNS.
Interneurons
The interneurons receive the impulses from sensory neurons in the CNS then relay the brain's response to motor neurons.
Motor Neurons
Finally, motor neurons transport impulses from the spinal cord (CNS) to the muscles or glands in your body.
1. Explain the advantages of compartmentalization in eukaryotic cells.
2. Explain how the nucleus controls protein synthesis in the cytoplasm.
3. List the components of the endomembrane system, and describe the structure and
functions of each component.
4. Describe the pathway of a newly synthesized protein through the endomembrane system
before is secreted out of the cell. What organelles will the protein visit?
5. Explain the biological/physiological relevance of mitochondrial cristae and chloroplast
thylakoids.
6. Describe the evidence that mitochondria and chloroplast are semiautonomous organelles.
7. Explain the mechanism by which microtubules transport vesicles through the cell.
8. Describe the basic structure of the plant cell wall and its function. Discuss the biological
relevance of plasmodesmata.
9. Compare and contrast the role of phospholipids and cholesterol in cell membrane
structure and function.
.0. Define diffusion. Explain why diffusion is a spontaneous process.
.1. Compare and contrast the role of transport proteins and receptor protein in cell
membrane function.
2. Define membrane potential and electrochemical gradient
3. Explain how endocytosis and exocytosis contribute to plasma membrane recycling.
4. Distinguish among osmosis, facilitated diffusion, and active transport.
15. Imagine that you can attach a molecular flag in the membranes of the rough endoplasmic
reticulum (RER). Where would you expect to find such flag if vesicles formed in the RER
deliver their content outside of the cell?
Answer:
Explanation:
⁰2
OF CHAPTER REVIEW QUESTIONS
iple Choice Questions
. The principal site of protein synthesis in a cell is
a. Endoplasmic reticulum
C.
Ribosomes
b. Nucleus
d. Golgi - Apparatus
a.
Answer:
b. Nucleus
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells. Generally, cells have the ability to independently replicate themselves. In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles. Some examples of cell organelles with their respective functions in all living organisms such as trees, birds, and bacteria include;
1. Cell membrane : is the wall of the cell and typically controls what leaves and enters the cell.
2. Mitochondria : it provides all the energy required in the cell by transforming energy forms.
3. Lysosomes : they are responsible for absorbing materials and breaking the materials taken in by the cells.
4. Chromosomes : they give sets of instructions for the synthesis of products.
5. Ribosomes : they are involved in the build up of proteins.
6. Endoplasmic Reticulum : this is where the ribosomes perform their tasks.
7. Cytoskeleton : they help to maintain and support the shape of the cells.
8. Vesicles : they ensure proteins are properly transported to the right and exact location.
9. Golgi apparatus : it prepares the protein for export by chemically tagging them.
10. Nucleus : it controls all the activities taking place in the cell and the synthesis of proteins.
Hence, the principal site of protein synthesis in a cell is nucleus.
what is the complementary strand of ACTAACGGTAGCTAGC
Which protein is found in the dead epidermal cells? *
1 point
melanin
arrector pili
keratin
dermis
Answer: keratin beacuse thats the right answer
What are the necessary conditions for autotrophic nutrition and what are its byproduct ?
➜ The conditions necessary for autotrophic nutrition are sunlight, chlorophyll, carbon dioxide (CO2) and water (H2O).
The byproducts of autotrophic nutrition are water and oxygen.
Answer:
Carbon dioxide, water, chlorophyll pigment, and sunlight are the necessary conditions required for autotrophic nutrition. Carbohydrates (food) and O2 are the by-products of photosynthesis.
A_____slide has an indentation in the center to hold the specimen , which is advantageous for larger specimen.
A. Coversilp.
B. Depressio.
C. Wet mount
Answer:
B
Explanation:
Answer:
B depressio
Explanation:
Explain why yam cannot follow cassava in a crop rotation plan
Answer:
The cassava cutting are placed in the sides of the mounds for yams
Which of the following conditions would activate the unfolded protein response? (check all that apply)
Group of answer choices
a. reduction in receptor-mediated endocytosis
b. synthesis of many extra secreted proteins.
c. mutation of a factor critical for degradation of proteins in the lysosome
d. mutation of a factor important for protein folding in the ER
Answer:
b. synthesis of many extra secreted proteins.
c. mutation of a factor critical for degradation of proteins in the lysosome
d. mutation of a factor important for protein folding in the ER
The conditions that would activate the unfolded protein response are:
Synthesis of many extra secreted proteins.Mutation of a factor critical for degradation of proteins in the lysosome.Mutation of a factor important for protein folding in the ER. What do you mean by unfolded protein response?The unfolded protein response may be defined as a cellular stress response related to the endoplasmic reticulum stress. It is a mechanism through which the accumulation of misfolded protein is induced.
Unfolded protein response gats are activated when there is any mutation or alteration that takes place in the ER, and sometimes lysosomes. Because these are both organelles that mediate the protein trafficking throughout the cell.
Therefore, the conditions that would activate the unfolded protein response are statements (b), (c), and (d).
To learn more about Unfolded protein response, refer to the link:
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PLEASE HELP FAST
Which of the following are carbohydrates?
Select all that apply.
fats
glycogen
starches
sugars
Answer:
fats, starches, sugars
Carbohydrates are fats, starch, and sugars. Thus, option A, C, and D are correct.
What are Carbohydrates?Carbohydrates is defied as that contains biomolecule that contains carbon hydrogen and oxygen in a ratio of 2:1.
Carbohydrates are mane source of energy of the body they work as fuel for the brain, kidneys central nervous system and heart muscle.
Cn(H2O)n is the basic formula for all carbohydrates . But this formula have limitation i.e it applies where same amount of carbon and water are use.
Initially the terms carbohydrate was used to describe compounds that have really contains carbohydrates because they had simple formula CH20.
In modern era carbohydrates are classified on the basis of their structure not on their formulae. Such as aldehydes and ketones are now known as polyhydroxy.
Therefore,carbohydrates are fats, starch, and sugars. Thus, option A, C, and D are correct.
Learn more about carbohydrates here:
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____cells cannot be replaced when they are damaged.
options:
red blood
nerve
Answer:
Nerve cells
Explanation:
Nerve cells do not renew themself. Sure, they can be repaired.
Where is cellular respiration involved/what on the picture goes through it? Is there more than one object?
Which part of the brain controls body movements and processes information from the sense organs? (1 point)
Answer:
cerebral cortex
Explanation:
I'm pretty sure that is correct
Which kidney process ensures that essential compounds such as vitamins and amino acids are not lost through urination? HINT: It's not A.
A. Filtration
B. Selective Reabsorption
C. Secretion
Bone is composed of
A. Living cells, protein fibers, and calcium salts
B. Living cells, dead cells, and protein salts
C. Synovial fluid, protein fibers, and calcium salts
D. Living cells, bone marrow, and calcium fibers
Answer:
The most suitable answer :A. Living cells, protein fibers, and calcium salts
Explanation:
see image
Answer:
A. Living cells, protein fibers, and calcium salts
Explanation:
Bone is composed of living cells, protein fibers, and calcium salts
HELP I DONT UNDERSTAND
Which of the following is an advantage of asexual reproduction? O Asexual reproduction produces greater genetic variation than does sexual reproduction. O Asexual reproduction cannot contribute to the growth of multicellular organisms, whereas sexual reproduction can. O Asexual reproduction allows genes to be shuffled more readily than does sexual reproduction. O Asexual reproduction can produce huge numbers of offspring in a short time
Answer:La reproducción asexual permite que los genes se mezclen más fácilmente que la reproducción sexual
Explanation:
Answer:
O Asexual reproduction can produce huge numbers of offspring in a short time
Based on the graph which of the following could be used to increase the reaction rate beyond point C
69 points! Pls tell me where to put the star I will mark brainliest but If ur answer is unrelated I will report u. Place the STAR on the pioneer species.
Answer:
I believe it is the moss on the ground because moss can grow quickly and since a pioneer species is the first thing that came, it colonized first, like a pioneer. Have a nice day :)
Explanation:
BRAINLIEST!!!
Sinkholes are extremely dangerous because they occur quickly and without warning. Sinkholes are a result of both mechanical and chemical
weathering.
Match the descriptions with the correct type of weathering that lead to the formation of sinkholes.
Limestone rock breaks into smaller pieces
Lime stone is rock dissolved by water underground
Pressure Changes on the surface cause the ground to collapse
When calcium carbonate rock sits in the water , it forms bubbles
WHICH ONES ARE MECHANICAL WEATHERING FACTORS AND WHICH ARE CHEMICAL WEATHERING FACTORS!!!
Answer:
The two limestone sentences are chemical weathering.
Pressure Changes is Mechanical.
Calcium carbonate rocks it's in water is chemical.
Explanation:
I'm pretty sure these are right!
List the Earth’s 4 spheres and give 1 example from your Environment for 2 of the speres.
Answer:
read this
Earth's Spheres
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called “spheres.” Specifically, they are the lithosphere (land), hydrosphere (water), biosphere (living things), and atmosphere (air). Each of these four spheres can be further divided into sub-spheres. To keep things simple in this course, there will be no distinction among the sub-spheres of any of the four major spheres.
Lithosphere - Land
The lithosphere contains all of the cold, hard solid land of the planet's crust (surface), the semi-solid land underneath the crust, and the liquid land near the center of the planet.* The surface of the lithosphere is very uneven (see image on right). There are high mountain ranges like the Rockies and Andes (shown in red), huge plains or flat areas like those in Texas, Iowa, and Brazil (shown in green), and deep valleys along the ocean floor (shown in blue).
The solid, semi-solid, and liquid land of the lithosphere form layers that are physically and chemically different. If someone were to cut through Earth to its center, these layers would be revealed like the layers of an onion (see right image above). The outermost layer of the lithosphere consists of loose soil rich in nutrients, oxygen, and silicon. Beneath that layer lies a very thin, solid crust of oxygen and silicon. Next is a thick, semi-solid mantle of oxygen, silicon, iron, and magnesium. Below that is a liquid outer core of nickel and iron. At the center of Earth is a solid inner core of nickel and iron.
* Note: The word "lithosphere" can take on different meanings depending on the speaker and the audience. For example, many geologists--scientists who study the geologic formations of Earth--reserve the word "lithosphere" to mean only the cold, hard surface of Earth, not the entire inside of the planet. For the purpose of this course, however, there will be no distinction among the various layers of land. The word "lithosphere" will be used in reference to all land in Earth's system.
Hydrosphere - Water
The hydrosphere contains all the solid, liquid, and gaseous water of the planet.** It ranges from 10 to 20 kilometers in thickness. The hydrosphere extends from Earth's surface downward several kilometers into the lithosphere and upward about 12 kilometers into the atmosphere.
A small portion of the water in the hydrosphere is fresh (non-salty). This water flows as precipitation from the atmosphere down to Earth's surface, as rivers and streams along Earth's surface, and as groundwater beneath Earth's surface. Most of Earth's fresh water, however, is frozen.
Ninety-seven percent of Earth's water is salty. The salty water collects in deep valleys along Earth's surface. These large collections of salty water are referred to as oceans. The image above depicts the different temperatures one would find on oceans' surfaces. Water near the poles is very cold (shown in dark purple), while water near the equator is very warm (shown in light blue). The differences in temperature cause water to change physical states. Extremely low temperatures like those found at the poles cause water to freeze into a solid such as a polar icecap, a glacier, or an iceberg. Extremely high temperatures like those found at the equator cause water to evaporate into a gas.
** Note: Some scientists place frozen water--glaciers, icecaps, and icebergs--in its own sphere called the "cryosphere." For the purpose of this course, however, frozen water will be included as part of the hydrosphere. The word "hydrosphere" will be used in reference to all water in Earth's system.
Biosphere - Living Things
The biosphere contains all the planet's living things. This sphere includes all of the microorganisms, plants, and animals of Earth.***
Within the biosphere, living things form ecological communities based on the physical surroundings of an area. These communities are referred to as biomes. Deserts, grasslands, and tropical rainforests are three of the many types of biomes that exist within the biosphere.
how might changes in abiotic factors in an area lead to speciation
Answer:
they can involve biotic interactions like competition, predation, and disease, or abiotic factors like severe weather, flooding, drought, and fire. Most species appear to be limited in at least part of their geographic range by abiotic factors, such as temperature, moisture availability, and soil nutrients.
Explanation:
water blank when it becomes ice
specialized functional bodies within the cytoplasm of a cell, what is the structure called?
Answer:
Explanation:
Cytoplasmic organelles are "little organs" that are suspended in the cytoplasm of the cell. Each type of organelle has a definite structure and a specific role in the function of the cell.
Which of these places is an example of a freshwater ecosystem?
A. Lake
B. Coral reef
C. Rain forest
D. Desert
Answer:
Lakes (A)
Explanation:
I took the test
TRUE OR FALSE Nephrons located in the renal cortex and renal medulla.
The correct answer is true.
PLS HELP WILL GIVE BRAINLIEST
1. The organism represented by letter F is an?
_________________
2: Which letters contain organisms that are autotrophic?
Answer:
F is a secondary consumer
A and B are autotrophic
What determines the direction of gas movement?
Answer: The direction of gas movement is determined by partial pressure differences. 2) At the arterial end of the pulmonary capillaries, O2 diffuses from the alveoli into the blood, while CO2 diffuses from the blood into the alveoli.
Explanation:
→ Oxygen and carbon dioxide diffuse across a respiratory membrane.
Factors determining gas movement:
The concentration gradient of the gases and the partial pressure of the gases.The differences in concentration on either side of the cell membrane.→ In diffusion of gases:
The amount of surface area available for diffusion.The distance the gas particles must travel.The higher the concentration gradient across the gas-exchanging surface, the faster the rate of diffusion across it.Learn more:
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What
The differee between Riversible Inhibition and
irrversibel Inhibition
Answer:
Explanation:
Irreversible inhibitors usually react with the enzyme and change it chemically (e.g. via covalent bond formation)
In contrast, reversible inhibitors bind non-covalently and different types of inhibition are produced depending on whether these inhibitors bind to the enzyme, the enzyme-substrate complex, or both.
Question 1 Which statement is true about fossils? O A fossil is any trace of prehistoric life. 0 To officially be a fossil, the remains of an entire organism must be found. O The remains of an organism that lived 500 years ago is called a fossil. Only the remains of animals. and not plant, can be made into a fossil. Question 2
Answer: The remains of an organism that lived 500 years ago is called a fossil.
Explanation:
A fossil can be defined as dead remains of plants and animals that existed past geological era. The traces of bones, and other skeletal remains, pollen, hard wooden materials can be found in the compact rock as the soft parts of the organisms are decomposed and decayed. The remains like shells, exoskeleton, amber, hair, and other can also be found. It takes many years for the development of fossil beneath the earth crust. The morphological, anatomical, physiological and molecular features can be assessed to know the age of the fossil.
Answer:
fossil is any trace of prehistoric life
The type of evolution that produced species P and H from species B:
A. divergent evolution
B. sequential evolution
C. phyletic gradualism
D. punctuated equilibrium