4.
How are cell membrane’s best described? (READ choices carefully!)
a double layer of phospholipid molecules with hydrophobic tails directed towards the cytoplasm of the cell
a single layer of phospholipid molecules with water molecules attached along one side
a double layer of phospholipid molecules with hydrophilic heads directed towards each other.
A double layer of phospholipid molecules with hydrophobic tails oriented towards each other.
Answer:
C. A double layer of phospholipid molecules with hydrophobic tails oriented towards each other.
Explanation:
What are environmental factors or eco factors
¿What are environmental factors or eco factors?
They are those that affect and influence living beings in their tolerance to different factors.
Environmental, becoming eurioic and stenoic.
Environmental factors, also known as eco factors, are the physical, chemical, and biological conditions that affect living organisms and their surrounding environment.
These factors include things like temperature, humidity, air quality, water quality, soil quality, availability of food and resources, and the presence of other organisms in the ecosystem.
They play a critical role in shaping the behavior and survival of living organisms.
See more about eco factors: https://brainly.com/question/2380222
if all the kinetochores are not attached to spindle fibers, then what would we likely observe in the cell?
The kinetochores are not connected to spindle fibers, then what could we possibly study inside the cellular the sister chromatids remain together, delaying anaphase.
The kinetochore is a complicated shape that establishes the attachment of spindle microtubules to chromosomes and is consequently crucial for devoted chromosome segregation.
The kinetochore performs an crucial function in facilitating chromosome segregation in some unspecified time in the future of mobile department. This big protein complex assembles onto the centromere of chromosomes and permits their attachment to spindle microtubules all through mitosis.
The number one difference amongst centromere and kinetochore is that centromere is the location in which the two sister chromatids are held collectively after the replication of chromosome in which kinetochore is the protein complicated on the chromosome in which spindle fibers are connected throughout cell branch.
Learn more about kinetochore here:
https://brainly.com/question/14856789
#SPJ4
HELP PLEASE
The Loop of Henle is important for Homeostasis of the body's internal environment because it regulates the concentrations of water and salt in the body tissues
True
False
If urine is too dilute, water is placed back into the urine for excretion, regulating the concentration of salt
True
False
If urine is too concentrated, salt is placed back into the urine, regulating the acid base balance of the body tissues and blood stream
True
False
(01.05 LC)
Which of the following is measured by temperature?
Type of atoms in matter
Type of molecules in matter
Average kinetic energy of particles
Average potential energy of particles
Temperature is a measure of the average kinetic energy of particles, the answer is the 3rd option.
What is thermal energy?Thermal energy is a system or an object's energy as a result of its molecules and atoms moving around. When force is applied to an object, it experiences movement but in the case of thermal energy, it requires heat for a reaction to occur.
Average kinetic energy of atoms is measured by temperature of atoms or molecules in an object or a system. In thermodynamics, the zeroth law states that heat is not transferred when two objects are in thermal equilibrium.
Find out more on temperature here: https://brainly.com/question/25677592
#SPJ1
Saltwater Ecosystem Concept
Saltwater Ecosystem Concept
They are called ecosystems. oceanic where the oceans are included, seas, marshes and others. salt water shows variations in concentration of soluble salts and minerals, on the contrary of freshwater ecosystems.
It is known that marine ecosystems include waters with a high concentration of salts; in this group are: seas, oceans, marshes and coral reefs, among others.
Fill in the Blanks!
1) __ species - naturally originated in a given ecosystem and have become suited to the environment conditions there.
2) __ species - Species that migrate into an ecosystem or are deliberately or accidentally introduced into an ecosystem by humans.
3) __ species - nonnative species whose presence causes a decline in native populations. They outcompete native species because they have no natural predators or parasites in the new environment l, or they spread new diseases l.
Answer:
1-native species
2- nonnative species
3-invasive species
Explanation:
1- the species originated naturally and are therefore native.
2- the species is not native but was introduced deliberately and is most likely non-invasive
3- invasive species, because the species is threatening native species and widespread making it invasive.
A virus mutates, and therefore it has which of the following traits of living things? (1 point)
O It grows and develops.
OIt is made of cells.
OIt evolves.
It uses energy
In Mendel's experiment, why did wrinkled seeds show up in the F2 generation,
even though they were not present in the F₁ generation?
A. Seed shape is a non-Mendelian trait.
B. It is not an inherited trait.
C. Wrinkled seeds are recessive.
D. Seed shape is controlled by four genes.
Answer:
C. Wrinkled seeds are recessive.
Explanation:
During F1, one dominant and one recessive allele for a gene resulted in the dominant phenotype.
F2 resulted in a homozygous recessive, which refers to the genotype of an organism with two recessive alleles.
Answer:
c) Wrinkled seeds are recessive.
Explanation:
In Mendel's experiment, wrinkled seeds show up in F2 generation, even though they were not present in F₁ generation because Wrinkled seeds are recessive.
Mendel proved that 25% of the F2 generation is recessive and it cannot be seen in the F1 generation. Therefore, the option (c) is correct answer.
Which numbered organelle produces ATP during cell respiration?
A 1
B 7
C 9
D 13
Which of the
following is NOT
a focus of food
microbiology?
A. preventing food spoilage
B. using microbes in making food
C. curing diseases that can be grown in food this
D. preventing food-borne illnesses
Answer:
c) curing diseases that can be grown in food
Explanation:
"Curing diseases that can be grown in food" is not a focus of food microbiology. Other options are focus of food microbiology. Hence, the option (c) is the correct answer.
In a certain population of rabbits, the allele for brown fur is dominant over the
allele for white fur. If 10 out
of 100 rabbits have white fur, what is the allele
frequency for the recessive allele?
The Hardy-Weinberg equation is:
[homozygous dominant]2 + 2[heterozygous] + [homozygous recessive]? = 1
A. 0.32
B. 0.90
C. 0.10
D. 0.95
Answer:
b because 2+2+675474 then divide ➗ and multiple then you will get 90
f all the kinetochores are not attached to spindle fibers, then what would we likely observe in the cell?
The kinetochores are not attached to spindle fibers, then what would we likely observe in the cell the sister chromatids remain together, delaying anaphase.
The kinetochore is a complicated structure that establishes the attachment of spindle microtubules to chromosomes and is as a consequence essential for devoted chromosome segregation.
The kinetochore performs an critical function in facilitating chromosome segregation at some point of mobile division. This large protein complex assembles onto the centromere of chromosomes and permits their attachment to spindle microtubules throughout mitosis.
The primary difference among centromere and kinetochore is that centromere is the area where the two sister chromatids are held collectively after the replication of chromosome where kinetochore is the protein complicated at the chromosome in which spindle fibers are attached throughout mobile department.
Learn more about kinetochore here:
https://brainly.com/question/14856789
#SPJ4
Help please and thank u!!
NEED HELP PLEASE!!! how do I replicate this DNA sequence ATA-CTC-AAT-CGT-ATG-TGG-CTA-TTC-TAG
Answer: GAT-CTT-ATC-GGT-GTA-TGC-TAA-CTC-ATA
Explanation: I just did it backwards maybe that will help
transcript and translate this code ATG-CTC-AAT-CGT-ATG-TGG-CTA-TTC-TAA
Answer:
UAC-GAG-UUA-GCA-UAC-ACC-GAU-AAG-AUU
Tyrosine, Glutamic Acid, Leucine, Alanine, Tyrosine, Threonine, Aspartic Acid, Lysine, Isoleucine.
Explanation:
First, let's understand what translation and transcription is. :)
Transcription (in simple terms) Taking 3 codons (or sequence) of DNA and turning it into an RNA codon.
Translation - Turning the RNA codon into an amino acid :)
ok now, let me explain a little bit more,
Apples Under Trees
Cars in Garages
That probably makes no sense.
A(Adenine) goes with T(Thymine)
C(Cytosine) goes with G(Guanine)
BUT
The U(Uracil) in RNA transcription replaces the T.
In RNA it goes
A(Adenine) goes with U(Uracil)
C(Cytosine) goes with G(Guanine)
T(Thymine) is still A(Adenine)
THERE IS NO T IN RNA CODONS
Ex: ATG would be UAC.
Now! we will use this fun thing called a codon chart that I will send a picture of for the translation part.
Let us use UAC for this
First, the big bold 4 letters is what we will start with. Find U.
Now go down one with the slightly less bold letters. Find A
Then go to the last bold letters find C.
We landed on Isoleucine yay! :D
hope that helped
What is the purpose of studying radon pollution levels?
A.
to give scientists more information on nuclear decay
B.
to improve air quality and human health
C.
to find underground stores of valuable uranium
D.
to aid in finding a cure for lung cancer
The use of radon studies will help the scientists to get an idea about many scientific ideas. The purpose of studying radon pollution levels is to improve air quality and human health. Correct answer is option B.
What is pollution ?
The level of harmful substances on environment that are causing adverse effects on atmosphere dealing with the harmful effects and their side effects.
To improve air quality and human health the studies of radon to pollution levels will help to study about the air quality and the human health.
Learn more about radon in pollution at :
https://brainly.com/question/15096375
#SPJ1
Spot phenotype in beans is determined by a single gene. A true-breeding strain of beans with large
spots is crossed with a true-breeding strain with small spots. All of the F1 progeny have both large
spots and small spots. Which of the following terms best describes the relationship displayed by the
large and small spot alleles.
Co-dominance describes the relationship displayed by the
large and small spot alleles.
In genetics, codominance refers to a type of inheritance in which two versions (alleles) of the same gene are expressed separately to produce different traits in an individual. In genetics, codominance refers to a type of inheritance in which two versions (alleles) of the same gene are expressed separately to produce different traits in an individual.
When both alleles show dominance, as in the case of the AB blood type (IA IB in humans), codominance occurs. A trait caused by an allele that is expressed independently and equally with the other. Blood type is an example of a codominant trait; a person with blood type AB has one allele for blood type A and another for blood type B.
To learn more about Co-dominance, here
https://brainly.com/question/9881046
#SPJ1
PLEASE HELP! fill in the blanks
1) __ species - one that is at serious risk of extinction
2) __ species - one that is likely to become endangered soon through all or part of its range.
3) __ species - these have a variety of roles (niches) in an ecosystem as they eat a wide variety of foods, live in a wide range of environments, and are therefore less prone to extinction. Examples: __ and __
4) __ species. - these have specialized diets, live in only a few types of habitats and are therefore more prone to extinction, for example: __
5) __ species - found only in one area and nowhere else in the world.
Answer:
1. Endangered species
2. Threatened species
3. Generalist species Ex: raccoon and American crows
4. Specialist species Ex: Tiger Salamanders
5. Endemic species
No explanation, your question is the explaination.
please..
EXPLAIN IN DETAIL HOW THE TWO RELATES TO THE CELL THEORY
The following lists components of the nature of science. Explain how at least two of these are related to the cell theory:
Scientific knowledge is durable yet subject to change
Science is a social activity
Scientific knowledge is a body of trustworthy new information about the world that has been gathered via experimentation and data collection.
Two points in the definition of science need to be emphasised. Science is a body of knowledge, first and foremost. It is a method by which knowledge is created, according to the second point. Therefore, a collection of trustworthy new information about the world that has been discovered through experimentation and data collection can be referred to as scientific knowledge.
All of the scientific knowledge we have is a result of our own observations. Because humans are inherently fascinated about many things in the physical world, we try to look into them and discover solutions. The process of organising and evaluating gathered data to potentially explain a phenomenon is known as scientific research. It is carried out precisely and repeatedly in order for empirical data to demonstrate the veracity of the outcomes.
To know more about Scientific knowledge visit:
https://brainly.com/question/5341848
#SPJ1
Which parts are common in all cells ?
Answer: All cells share four common components: 1) a plasma membrane, an outer covering that separates the cell's interior from its surrounding environment; 2) cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found; 3) DNA, the genetic material of the cell; and 4) ribosomes
Explanation:
Would a low calcium diet influence the contraction of a muscle?
1) No since sodium is the ion that takes the message into the cell. Calcium is only
important for going into the neuron to cause the release of ACH.
2) No since sodium is the ion that takes the message into the cell. Calcium is not used in the process of muscle contraction.
3) Yes since calcium is needed to uncover the active site on actin so that the cross bridges can form and start the sliding process.
(NEED HELP ASAP AND I APPRECIATE YOUR HELP)
Calcium is important in the process of contraction because calcium is needed to uncover the active site on actin so that the cross bridges can form and start the sliding process. Option C
Is calcium important for contraction?We know that muscles cells do contract and this is how an individual is able to make movement. There are several inorganic elements that play a key role in the process of the contraction of the muscle cells.
A typical inorganic ion which is very key to the contraction of the muscles is the calcium ion. There are several proteins that are involved in muscle contraction and the activities of these proteins are triggered by the calcium ion.
Learn more about muscle contraction:https://brainly.com/question/14907458
#SPJ1
A
Intro
C
B
MAN
What level of organization is represented by each
image?
A: blood cells
B:
C
The level of the organization represented by each image is A: blood cells; B: Organ and C: Tissue.
The tiniest component of all living things, cells make up the tissue and organs that make up an organism. The membrane, the cytoplasm, and the nucleus are the three primary components.
A collection of cells with a unified structure and function is referred to as a tissue. The intercellular matrix, a nonliving substance, fills the spaces between the cells.
An organ is a collection of related tissues that provide a specific purpose for a living creature. An organ serves a specialized purpose since it is more complicated than a tissue.
To learn more about Tissue visit: https://brainly.com/question/4849327
#SPJ1
Answer:
cell
organ
tissue
Explanation:
got it right
A man with red-green color blindness (XrY). a recessive sex-linked trait, has a child with a woman that is homozygous dominant (XRXR). What is the probability that a child produced from this couple will have red-green color blindness?
a. 100% for male children and 0% for female children.
b. 0% for male children and 100% for female children.
c. 0% for male children and 0% for female children.
d. 50% for male children and 50% for female children.
Answer: A
Explanation:
Answer:
c
Explanation:
All Correct Statements Pertaining to the Dihydroxyacetone Phosphate Reaction Step in Glycolysis.
ATP is Needed to Generate Dihydroxyacetone Phosphate.
Fructose is Needed to Generate Dihydroxyacetone Phosphate.
Glucose-6-Phosphate is Needed to Generate Dihydroxyacetone Phosphate.
Inorganic Phosphate is Needed to Generate Dihydroxyacetone Phosphate.
None of the Statements are Correct.
All Correct Statements Pertaining to the Dihydroxyacetone Phosphate Reaction Step in Glycolysis
Conversion of dihydroxyacetone phosphate in glycolysis requires glucose-6-phosphate to generate dihydroxyacetone phosphate. So the correct option is C.
What is glycolysis?Glycolysis is the process of forming pyruvate from the catabolism of glucose molecules. This process creates ATP, NADP, and FADH₂ molecules. The dihydroxyacetone phosphate (DHAP) reaction step involves the conversion of DHAP to glyceraldehyde-3-phosphate (G3P) by the enzyme triose phosphate isomerase. This enzyme catalyzes the isomerization of a tri-carbon sugar to another tri-carbon sugar (G3P).
Dihydroxyacetone phosphate is in the glycolytic pathway and, along with glyceraldehyde-3-phosphate, is one of two products formed when fructose-1,6-bisphosphate is broken down. It is readily and reversibly isomerized to glyceraldehyde-3-phosphate.
To know more about glycolysis visit:
https://brainly.com/question/15159050
#SPJ1
The body fluid of sharks has a much lower concentration of sodium chloride than that of the surrounding seawater, and sharks are able to remain in osmotic equilibrium with the external environment. How can this be the case?
The body fluid of sharks has a much lower concentration of sodium chloride than that of the surrounding seawater, and sharks are able to remain in osmotic equilibrium with the external environment. Sharks store enough urea to match the total solute concentration of the surrounding seawater
An osmoconformer's internal bodily fluids are best described as having about the same total solute concentration as the surrounding environment. The sharks may use their amazing capacity to absorb ammonia to increase their urea reserves. The fish, which are scavengers, frequently go extended periods without eating, depriving themselves of the raw protein source necessary to keep their tissues' urea levels at a healthy level.
Learn more about to fluid of sharks Visit here: https://brainly.com/question/28302928
#SPJ4
Help help help help shebbdbdj
Plants, algae and other photosynthetic organisms use energy from the sun to make their own food using the process known as photosynthesis.
Photosynthesis has two phases in which the synthesis of food is accomplished. The light-dependent reactions and the light-independent reactions. All of these occur in the chloroplast of the cell.
The light-dependent reactions actually captures the sunlight energy and convert it into the usable form of energy by plant like ATP and NADPH. The light-independent reactions then use this chemical form of energy to actually synthesize the food in the form of glucose. Thus, the sunlight energy is very essential to initiate the whole process of photosynthesis.
To know more about photosynthesis, here
brainly.com/question/13261372
#SPJ1
In humans, the presence of freckles (F) is dominant to the absence of freckles (f).
Two heterozygous individuals mate.
What are the genotypes of the two individuals?
What is the probability of them having a child with freckles?.
Since the two individuals are heterozygous, the genotypes they will have for freckles will be Ff for each. The probability of having a child with freckles will be 75%.
Heterozygous refers to the presence of two different forms of the allele for a trait. These two different alleles are actually the contrasting forms of a gene. For example, the trait height can have two contrasting alleles one for tall and one for dwarf.
Genotype refers to the genetic make-up or constitution of an organism. This genetic constitution can be for the entire genome or for any particular trait. The genotype also provides insight about the allelic combinations.
To know more about genotype, here
brainly.com/question/20730322
#SPJ9
Which of these pathogens is
MOST LIKELY to infect a human
on the skin or under fingernails or
toenails?
protists
fungi this
Answer:
b) Fungi
Explanation:
Fungi such as Trichophyton rubrum is most likely to infect a human on the skin and under fingernails or toenails. Therefore, the option (b) is the correct answer.
Answer:
The real answer is Fungi.
its correct meaning.
1. criteria pollutants
2. electrostatic precipitator
3. national ambient air quality standards
4. primary standards
5. secondary standards
6. wet scrubber
the six pollutants monitored under
the national ambient air quality
standards; they are carbon monoxide,
ozone, particulates, sulfur oxides,
nitrogen oxides, and lead
air pollution standards aimed at
protecting human health
a pollution control technology that
works by putting a negative charge on
particulates as they enter a smokestack
and then collecting them on a positively-
charged collection plate
establish maximum levels at which
certain pollutants can safely exist in the
air
air pollution standards aimed at
protecting the environment and
buildings
a pollution control technology that
uses a fine mist of water vapor to collect
particulates
mitte
E
Its correct meanings are given below.
1. Criteria pollutants: The six pollutants tracked by the national ambient air quality guidelines are lead, sulfur dioxide, ozone, particulates, and sulfur dioxide.
2. An electrostatic precipitator: is a pollution-control method that collects particles on a positively charged collection plate by applying a negative charge to them when they enter a chimney.
3. National ambient air quality standards: Establish maximum amounts at which specific contaminants can be present in the air without causing harm;
4. Primary standards: The most important requirements are those pertaining to air pollution and human health.
5. Secondary standards: Adequate rules for air pollution that safeguard the environment and structures
6. Wet scrubber: a pollution-control method that collects pollutants using a fine water vapor mist.
To learn more about Ozone visit: https://brainly.com/question/27911475
#SPJ1