Explanation:
cell double-helix
gene
DNA-histone complex
nucleus
nucleotide
chromosome
why are Some substances allowed to cross the cell membrane while other substances are not?
Answer:
membranes are semipermeable so only let certain materials in and out; if there are carrier or channel proteins, then passive transport can occur otherwise active transport is required which requires energy.
Explanation:
membranes are semipermeable so only let certain materials in and out; if there are carrier or channel proteins, then passive transport can occur otherwise active transport is required which requires energy.
How does a catalyst work?
Answer:
A catalyst is a chemical substance that affects the rate of a chemical reaction by altering the activation energy required for the reaction to proceed. This process is called catalysis. A catalyst is not consumed by the reaction and it may participate in multiple reactions at a time.
Explanation:
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How do the Atlantic and Pacific profile differ from one another? Be descriptive of each region of ocean floor?
Which are the main stages of the cell cycle? Select three options.
interphase
mitosis
metaphase
cytokinesis
anaphase
I will look back on my test and whoever is right and if they were both right I will mark the first one that answers brainliest!
PLEEASE HELP!
Answer:
interphase
mitosis
Cytokinesis
Explanation:
three stages of the cell cycle interphase longest part of the cell cycle cell grows and develop and function Parts in our body almost at the end of the interphase DNA and chromosomes double mitosis stage in cell where cell divides into nuclei Cytokinesis the two daughter cells create as the cytoplasm divides each daughter cell has an exact copy of parent cells DNA
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Which polymer
can be found "freely floating" in the cytoplasm of a bacteria?
A) proteins
B) lipids
C) carbohydrates
D) nucleic acids
The gene for the hair pattern called a "widow's peak" is dominant. In a population of 100 people, 50 people have a widow's peak. How many people would you expect to be heterozygous for the trait?
50 people because the widow's peak is dominant. Those who don't have a widow's peak do not have the gene.
If the gene for the hair pattern "widow's peak" is dominant, it means that individuals with at least one dominant allele will express the trait. We would expect 50 people to be heterozygous (Ww) for the widow's peak trait.
Heterozygous refers to a genetic condition in which an individual possesses two different alleles for a specific gene. Alleles are alternate forms of a gene that can code for different variations of a particular trait. In a heterozygous individual, one allele is dominant and the other is recessive.
The dominant allele is expressed in the phenotype, meaning it determines the physical appearance or characteristic, while the recessive allele remains hidden and does not show in the individual's observable traits. The notation for a heterozygous trait is typically represented by two different letters, one for each allele (e.g., Aa).
Assuming that "W" represents the dominant allele for widow's peak, and "w" represents the recessive allele.
Given that 50 people in the population have a widow's peak (homozygous dominant, WW), we can deduce that the other 50 people must have the genotype for heterozygous (Ww) to express the trait.
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Dumping raw sewage into a river will reduce the amount of dissolved oxygen in the
water. What effect could dumping raw sewage most likely have on a river ecosystem?
O an increase in cellular respiration due to the rising level of phosphates in the water
O a decrease in water temperature due to the energy transfer from osmosis
O a decrease in aquatic animal populations
O an increase in fish populations
Answer:
The first option "an increase in cellular respiration due to the rising level of phosphates in the water"
Explanation:
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.Explain why the scientific process is important when learning about diseases.
Answer:
The scientific process is important when learning about diseases because it allows to obtain reliable and valid knowledge about the different existing diseases, it helps in solving problems correctly and it is the best tool to nullify arbitrary opinions regarding a diagnosis or treatment, taking into account each of its stages.
Explanation:
The scientific method is a process through which relationships between facts are established to arrive at the verification of something. Through this step by step in which facts are discarded and added, the answers to findings are based. It is through the information generated by the research that it is possible to associate and / or integrate a set of symptoms and signs with a probable nosological diagnosis. Similarly, the selection of treatment and even the prognosis of patients depend on the information obtained from a population of subjects who share attributes; they depend, in a word, on research. Bearing in mind the scientific process, scientific thinking develops with practice, and for this it is necessary that there be constant reflection on the problems, have guides for the interpretation of medical reading, develop research protocols, learn to collect and analyze data about diseases.
Scientific is very important in order to obtain information about the disease.
The scientific process is important when learning about diseases because it provides information about various aspects of diseases as well as provides solution about cure of the disease.
This scientific process or method can be used for obtaining information about the causes of disease, its causing agents and cure for the disease so we can conclude that scientific is very important in order to obtain information about the disease.
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The vertebrate lung first appeared in ___________.
Answer:
fishes
Explanation:
A progenitor feature found in early boney fish served as the basis for the development of the vertebrate lung.
What are vertebrate lungs?The lung of modern vertebrates evolved from a structure that was present in the ancestors of early boney fish.
Lungs in vertebrates originated as extra air-breathing organs in primordial fishes and were ventilated by buccal pumping when they first appeared. In more modern fishes, the organ formerly known as the lungs has been replaced with the hydrostatic swimbladder. This fundamental kind of unicameral lungs and the buccal pumping ventilation observed in these lungs can also be found in more modern amphibians.
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If you needed to sterilize a mattress, which of the following would be most useful?
Question options:
membrane filtration
phenolics
incineration
UV radiation
carbon dioxide (scCO2)
Answer:
d
Explanation:
what do we call scientists that study plants?
Answer:
The answer to this is: A botanist is someone who studies plants.
Explanation:
Which is true about Embryonic Stem Cells.
Answer:
They can give rise to all cell types in the organism.
Hope this helps
If you are experiencing Na channels deactivating the plasma membrane which hyperpolarizes the membrane which sense is being activated?
The options are missing from the question,below are the options.
A) touch
B) smell
C) hearing
D) sight
The correct answer to the question is option D
SIGHT.
If one is experiencing Na channels deactivating the plasma membrane,the sense that is being activated is SIGHT,
this is because in the red blood cell,the light induced isomerization of the moiety retinal rhodoesin produce activated opsin which goes ahead to activate the signal transducing G-protein transducin,this it does by catalyzing exchange of GTP (Guanosine triphosphate) for bound GDP(guanosine diphosphate) on the subunit.
This GTP in turn activates the level of CGMP (Cyclic guanosine monophosphate) phosphodiesterase and it further acts to lower the level of CGMP.
Upon this reduction,it leads to the closing of CGMP-gated Na+ channels and hyperpolarization of the membrane.
5. Animals depend on plants for carbon dioxide..... True or False
true they depend on plants forco2
Answer:
No
Explanation:
Animals get Carbon dioxide from the air, and carbon dioxide is emitted by burning of fossil fuel
true or false: The main reason why living organisms require a constant supply of energy is to maintain themselves in a highly organized state.
Answer:
true
Explanation:
Answer:
True
Explanation:
it's true because
Discuss how constraints related to biology and management affect the choice of a crossbreeding system. Please be descriptive.
Answer:
Some important constraints:
-Plant breeding: autogamy and allogamy, self-sterility, etc
-Animal breeding: trait compatibility
- Breeding systems in general (i.e., both in plants and animals): barriers for sexual reproduction
Explanation:
Crossbreeding systems consist of the breeding between two breeds in order to develop progeny with particular advantageous phenotypic traits. In-plant crossbreeding systems, it is imperative to have into account whether the plant is autogamous (reproducing by self-pollination) or allogamous (reproducing by cross-fertilization), because it will affect the fitness of the progeny resulting from these breeds. Moreover, the biological mechanisms of self sterility and compatibility must be also taken into consideration. In-animal breeding systems, it is important to have into consideration that phenotypic traits we desire to obtain in the progeny must be compatible between races. In addition, the barriers for sexual reproduction are also an important issue both in plant and animal breeding systems, it thus being impossible, for example, to get a breeding between Chihuahua and Great Dane dogs.
Describe where in nature you would see contaminated water actively weathering rocks and how it may differ from non-contaminated water.
Answer:
The contaminated water contains harmful chemicals which results in the cracking of rock.
For example: The feldspar crystals within the granite react with the water chemically to form clay minerals which makes the rock weak and hence result in weathering.
In what organisms are cell walls from
i need help with this, it's not really coming to my head and its getting annoying
Answer:
looks really hard
Explanation:
Answer:
Things that are found only in bacteria cells are : circular DNA of the nucleoid, the cell wall of peptidoglycan, and flagella.
Things that are found only in animal cells are: centrosome and lysosomes.
Things that are found only in plant cells are: large vacuoles, cell wall, chloroplasts and specialized plastids.
Does anyone know 1,2,3,4,5,6?
Answer:
1. brown eyes
2.brown hair
3. BH Bh bh and bH
4. brown
5. brown
6. BH Bh
what are two limits to cell growth
Crust is created at which type of plate boundary?
Answer:
At convergent boundaries
Explanation:
"continental crust is created and oceanic crust is destroyed as it subducts, melts, and becomes magma."
Hope this helps!!
Who is Thomas Malthus?
Answer:
Thomas is an English economist and demographer. He is best known for his theory that population growth will always tend to outrun the food supply and that betterment of humankind is impossible without stern limits on reproduction.
Explanation:
Respiration in autotrophic organisms occurs only
during the day.
B) Fungi and monerans carry out aerobic respiration
only.
C) All living organisms carry out some form of
respiration.
D) All autotrophs and heterotrophs require glucose
and oxygen for respiration.
Answer it occurs at night aswell
Explanation:
Which two words are paired correctly?
Overtebrate, endoskeleton
Oinvertebrate, endoskeleton
Overtebrate, autotroph
O invertebrate, autotroph
I NEED ASAP
Answer:
vertebrate, endoskeleton
Answer:
two words are paired correctly is vertebrate, exoskeleton have a good day mine is bad but have a good day
Explanation:
i did the test
can someone help me with this worksheet
Answer:
1. tissues
2. skin
3. connective tissues
4. brain
5. organ
6. taste buds
7. epithelial tissues
8. organ ssytems
9. organism
10. nerve tissues
What do tropical rainy and temperate marine climates have in common?
O dry winters
O very few trees
O very hot temperatures
O high levels of precipitation
Was Minato's last name Senju? It was never revealed in the show. Maybe it was in the comics?
Answer:
it was minato namikaze fatther of naruto and husband of the red hared woman and yes it was revealed in the show
Explanation:
Can someone help? I don’t understand this at all
Answer: a plant with genotype rr will have red phenotype as the dominant, since there are two, same goes for ii, it will have ivory phenotype as the dominant. Meaning the one with ri would be of equal dominance. While the answer to the question on the bottom will be 1/2 or 50/100 chance of the pick one getting picked since, well, there is one of each plant, the possibility will have an equal chance of getting picked.
Explanation: hope this answers some of your questions.
Which ecosystem is more stable - a potato field or a forest?
Answer:
A forest ecosystem is more stable than a potato field.
Explanation:
The forest ecosystem is a natural one and all the elements are balanced, they are managed by the nature itself.
The forest ecosystem is a natural one, and all the components are in harmony since nature herself manages the ecosystem.
Thus, A forest ecosystem, or simply a forest, is a community of plants, animals, microorganisms, and other species that interact with the chemical and physical elements of their environment.
The species in a forest ecosystem are depending on one another in order to survive, and they can be roughly categorized as producers, consumers, and decomposers based on their ecological roles.
The boreal forest that surrounds the Earth in northern latitudes is an example of a vast forest ecosystem. A forest ecosystem can also be as small as a microsite on a tree limb where mosses, insects, and microscopic species coexist.
Thus, The forest ecosystem is a natural one, and all the components are in harmony since nature herself manages the ecosystem.
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