Which of the following statements about cell organelles is NOT true?
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A. Chloroplasts contain chlorophyll and are the site of photosynthesis.
B. Many of the same organelles are located in both plant cells and animal cells.
C. The nucleus in an animal cell has a different primary function than in a plant cell.
D. The endoplasmic reticulum has several roles, including packaging and transporting proteins.
Answer: C
Explanation:
because the nucleus in eukaryote cells have the same function which is to store DNA.
PSYCHOLOGY
Briefly describe the relationship between hormones, emotion, and external behavior
a description of the role of sensory organs and the types of
stimuli the organs receive
Tongue
The four intrinsic tongue muscles work together to give the tongue great flexibility.
The nervous system must receive and process information about the world outside in order to react, communicate, and keep the body healthy and safe. Much of this information comes through the sensory organs: the eyes, ears, nose, tongue, and skin. Specialized cells and tissues within these organs receive raw stimuli and translate them into signals the nervous system can use. Nerves relay the signals to the brain, which interprets them as sight (vision), sound (hearing), smell (olfaction), taste (gustation), and touch (tactile perception).
1. The Eyes Translate Light into Image Signals for the Brain to Process
The eyes sit in the orbits of the skull, protected by bone and fat. The white part of the eye is the sclera. It protects interior structures and surrounds a circular portal formed by the cornea, iris, and pupil. The cornea is transparent to allow light to enter the eye, and curved to direct it through the pupil behind it. The pupil is actually an opening in the colored disk of the iris. The iris dilates or constricts, adjusting how much light passes through the pupil and onto the lens. The curved lens then focuses the image onto the retina, the eye’s interior layer. The retina is a delicate membrane of nervous tissue containing photoreceptor cells. These cells, the rods and cones, translate light into nervous signals. The optic nerve carries the signals from the eye to the brain, which interprets them to form visual images.
2. The Ear Uses Bones and Fluid to Transform Sound Waves into Sound Signals
Music, laughter, car honks — all reach the ears as sound waves in the air. The outer ear funnels the waves down the ear canal (the external acoustic meatus) to the tympanic membrane (the “ear drum”). The sound waves beat against the tympanic membrane, creating mechanical vibrations in the membrane. The tympanic membrane transfers these vibrations to three small bones, known as auditory ossicles, found in the air-filled cavity of the middle ear. These bones – the malleus, incus, and stapes – carry the vibrations and knock against the opening to the inner ear. The inner ear consists of fluid-filled canals, including the spiral-shaped cochlea. As the ossicles pound away, specialized hair cells in the cochlea detect pressure waves in the fluid. They activate nervous receptors, sending signals through the cochlear nerve toward the brain, which interprets the signals as sounds.
3. Specialized Receptors in the Skin Send Touch Signals to the Brain
Skin consists of three major tissue layers: the outer epidermis, middle dermis, and inner hypodermis. Specialized receptor cells within these layers detect tactile sensations and relay signals through peripheral nerves toward the brain. The presence and location of the different types of receptors make certain body parts more sensitive. Merkel cells, for example, are found in the lower epidermis of lips, hands, and external genitalia. Meissner corpuscles are found in the upper dermis of hairless skin — fingertips, nipples, the soles of the feet. Both of these receptors detect touch, pressure, and vibration. Other touch receptors include Pacinian corpuscles, which also register pressure and vibration, and the free endings of specialized nerves that feel pain, itch, and tickle.
4. Olfaction: Chemicals in the Air Stimulate Signals the Brain Interprets as Smells
The sense of smell is called olfaction. It starts with specialized nerve receptors located on hairlike cilia in the epithelium at the top of the nasal cavity. When we sniff or inhale through the nose, some chemicals in the air bind to these receptors. That triggers a signal that travels up a nerve fiber, through the epithelium and the skull bone above, to the olfactory bulbs. The olfactory bulbs contain neuron cell bodies that transmit information along the cranial nerves, which are extensions of the olfactory bulbs. They send the signal down the olfactory nerves, toward the olfactory area of the cerebral cortex.
5. Home of the Taste Buds: The Tongue Is the Principal Organ of Gustation
What are all those small bumps on the top of the tongue? They’re called papillae. Many of them, including circumvallate papillae and fungiform papillae, contain taste buds. When we eat, chemicals from food enter the papillae and reach the taste buds. These chemicals (or tastants) stimulate specialized gustatory cells inside the taste buds, activating nervous receptors. The receptors send signals to fibers of the facial, glossopharyngeal, and vagus nerves. Those nerves carry the signals to the medulla oblongata, which relays them to the thalamus and cerebral cortex of the brain.
Answer:
The motion of a mouse
Explanation:
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Before a cell divides, it makes a copy of its genes during
Bedford a cell divides, it makes a copy of its genes during interphase
Which of the following is most likely to contribute to density-dependent regulation of populations? Group of answer choices Individuals voluntarily stop mating so that overcrowding does not occur. Density-independent factors lead to fewer births and increased mortality. The incoming energy decreases in populations experiencing a high rate of increase. Density-dependent factors lead to fewer births and increased mortality.
Answer:
Density-dependent factors lead to fewer births and increased mortality.
Explanation:
The carrying capacity can be defined as the maximum population size an environment can support. Density-dependent limiting factors produce a logistic growth pattern (S curve) in the population until it reaches its carrying capacity, thereby decreasing the birth rate and increasing the mortality rate in the population. Some important density-dependent limiting factors able to control the size of the population are competition (intraspecific competition), predation and diseases.
How would you explain why the North & South poles stay so cold, even when they're getting 24-hour sunlight?
Answer:
Use your own words, but look at explanation for example:
Explanation:
They are both so far away from the hemisphere line (which is where the warmth is) so they don't have warm temperatures at anytime of year, unlike in other places there can even be warm temperatures all year round.
How does the movement of tectonic plates contribute to natural selection? Please explain.
Answer:
The movement of the plates can contribute to the natural selection of organisms.
Explanation:
Processes such as mutations, duplications, exon shuffling, transposable elements and pseudogenes have contributed to genomic evolution.
Which statement is part of the cell theory?
Cells can be produced from nonliving matter.
All cells are produced from other cells.
Only plants are composed of cells.
Only animals are composed of cells.
Answer:
all cells are produced from other cells
Explanation:
cell theory <3
Asexual Reproductive
Answer:
The production of offspring by one parent without meiosis and fertilization.
Explanation:
This the definition hope this helps.
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Inherited traits are described by probabilities. When experimenting on inherited traits, why is it important to have a large sample size?
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Answer:
results will be more accurate if there is a larger sample size.
No matter what research is, the larger sample size is, the more accurately will be the results and vice versa. The larger samples increase a chance of significance because they reflect the population mean more reliably.
With small sample, the chance for false conclusions is higher.
Explanation:
How do the reproductive glands, pituitary gland and hypothalamus relate to one another?
Answer:
The nerve center connections the anxious and endocrine frameworks via the pituitary organ. Its capacity is to emit delivering chemicals and repressing chemicals that animate or restrain (like their names infer) creation of chemicals in the front pituitary.
Explanation:
anyone really good at biology can solve biology question
Answer:
Depends what kind of biology or question it is?
Explanation:
Explain what you need help with and possibly I can!!
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What physical characteristics of an environment would support populations and communities within a desert ecosystem?
Answer:
General Characteristics of the Desert:
Aridity: It is one and common characteristic of all deserts throughout most or all of the year. ...
Extremes of temperature: ...
Humidity: ...
Precipitation: ...
Drought: ...
High wind velocity.
Sparsity of cloud cover.
Absence of water vapour in air.
What phase of the moon does this image represent?
Answer:
Waxing Quarter
Explanation:
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How do volcanic mountains form?
Answer:
Volcanic mountains form when molten rock from deep inside the Earth erupts through the crust and piles up on itself.
Explanation:
Answer:
Volcanic mountains form when molten rock from deep inside the Earth erupts through the crust and piles up on itself. The islands of Hawaii were formed by undersea volcanoes, and the islands seen above water today are the remaining volcano tops. Well-known volcanoes on land include Mount St.
What happens to the helpful traits after many different traits?
Answer:
They become more expressed and prominent, because of natural selection.
List down 3 ways on how you can protect the estuaries and intertidal zones so that interaction of the and abiotic factor in these areas will not be disturbed.
Answer: Intertidal zones are regions which lie above the water level which receives low tides. Estuaries are the closed bodies of coastal waters which contain brackish water.
Explanation:
The ways through which the intertidal zones and estuaries can be protected are as follows:
1. The chemical discharge from factories and sewage discharge must be restricted or prohibited in these areas so that the water and air quality remains good necessary for the survival of living beings.
2. Prohibiting the waterways to prevent the discharge of oils which can contaminate water of estuaries and soil of intertidal zones.
3. The trash of polythene bags, plastic materials, vegetable matter discharged from the city must be cleaned up to retain the quality of soil and water.
briefly explain how down syndrome results from meiosis
Answer:
In translocation, a piece of chromosome or a whole chromosome breaks off during meiosis and attaches itself to another chromosome. The presence of an extra part of the number 21 chromosome causes the features of Down syndrome.
What type of mutation are the most harmful to an organism
Answer:
frameshift mutations
Explanation:
what two types of cells contain chloroplast
Answer:
Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis
Explanation:
1. Conduct Research Compare the Yellowstone wolf story with a situation in your
region where human activity that affected one species, or a couple of species,
resulted in a trophic cascade. Which aspects are similar to the Yellowstone story,
and which are different? Have researchers offered and tested hypotheses to explain
the changes?
Answer:
I can handle this task.
Explanation:
I have just tried to research on this.
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What is most likely a limiting factor for a house plant?
Answer:
sunlight
Explanation:
plants need sunlight to survive and therefore when it is indoit's it doesn't receive sunlight
light is a vitally important limiting factor, essential for their growth.
Create a ranking system for the terms from one to six. The first one has been completed for you. Rank the remaining terms as two through six.
The question is not complete here, however, the complete question as follows:
consider the relationship among the following terms. book letter chapter word page sentence Create a ranking system for the terms from one to six. The first one has been completed for you. Rank the remaining terms as two through six.
Answer:
1) letter 2) Word 3) Sentence 4) Page 5) Chapter 6) Book
Explanation:
All the given keywords or terms are from the book which includes various elements that make a book as a whole. A ranking system requires creation from the given related words or terms. The ranking system included the least inclusive part to the most inclusive part in
Letters are the smallest part of any reading material. Letters form words by joining together and several words form a sentence that makes up the page of the book and several pages combinedly form chapters. Lastly, series of chapters makes a completed written material called BOOK.
Answer:
1) letter 2) Word 3) Sentence 4) Page 5) Chapter 6) Book
Explanation:
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What is the name of the topic that we are covering?
Body Systems
Genetics
Evolution
Cells
Based on what you have learned using the module resources, write an explanation (as if you were talking to a friend or family member) of how gene expression derives a protein from a genotype. Your response should explain the connection between DNA, RNA, proteins, and traits and describe what happens during transcription and translation. Feel free to include a picture of a concept map or other visualization as an aid to your written explanation!
Answer:
Two DNA cells come together to form a whole new genome.
How much fish is harvested from the ocean each year?
A) almost 7 millions
tons
B) almost 700 millions
tons
C) almost 17 millions
tons
D) almost 75 million
tons
The process cells use to harvest the energy in organic compounds, particularly glucose, is called Group of answer choices
Answer:
cellular respiration
Explanation:
hope this helps have a nice day
Select the part that contains the information that an animal cell uses for growth and activities.
lysosomes chromosomes mitochondria vacuoles