Answer:
C. The brain controls the contraction of muscles.
Explanation:
Calcium's positive molecule is important to the transmission of nerve impulses to the muscle fiber via its neurotransmitters triggering release at the junction between the nerves. Inside the muscle, calcium facilitates the interaction between actin and myosin during contraction.
A.) Red blood cells are produced in the bone marrow.
It's a well known fact that bone marrow produces blood cells, and also these blood cells contribute to just how well the nervous system works. Nerves require blood in order to function properly. The way that both the Skeletal system and Nervous system work in harmony is by both of them producing functions for each other. The blood cells produced by the marrow, allow the nerves to function properly, while the nerves produce senses for the bones and muscle.
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In leopards, being shy (S) is dominant to being sassy (s), and being timely (T) is dominant to being tardy (t).
A female leopard that is heterozygous for both the S and T trait mates with a male leopard that is also heterozygous for both traits. Both the S and T traits assort independently from one another.
What is the probability that they will have an offspring that is sassy and timely?
Choose 1 answer:
(Choice A)
A
6.25%
(Choice B)
B
18.75%
(Choice C)
C
0%
(Choice D)
D
56.25%
9. Shyam tried to help his mother in making Sharbat. In hurry he added large amount of sugar in water and found sugar did not dissolve in it. a) What type of solution did he obtain? Suggest two ways to Shyam that help him in dissolving the sugar.
Answer:
See the answer below
Explanation:
a) Shyam must have obtained a saturated solution of the sugar. A saturated solution is one that already contains the maximum amount of solute it can dissolve at a given temperature.
Shyam can get the sugar to dissolve in the water by
1. continuously stirring the solution in order to increase the entropy of the system. The more the entropy of a system, the faster the rate of reaction.
2. raising the temperature of the water through heating. The heat will increase the entropy of the system and cause more sugar to dissolve.
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Read the following descriptions of two different types of precipitation. Then, decide if they are both true or not.
Rain: occurs when the air above and below clouds are both above freezing; most likely in the summer
Sleet: occurs when the air above and below clouds are both below freezing; most likely in the winter
Are the descriptions true?
A) The description of rain is true, but the description of sleet is false.
B) Both descriptions are inaccurate and false.
C) Both descriptions are accurate and true.
Both descriptions of the rain and sleet are accurate and true.
What is precipitation?The term precipitation refers to the down fall of water that have been condensed in the cloud as rain drops.
We know that rainfall is most likely during summer while sleet is more likely during winter. Therefore, both descriptions of the rain and sleet are accurate and true.
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Answer:
the answer is B i took the test!
Explanation:
Light energy is changed to cell energy in the process of _______________
Answer:
Light energy is changed to cell energy in stage 1 of photosynthesis. The green pigment that a absorbs light energy is chlorophyll. Fermentation is the opposite process of cellular respiration.
Explanation:
I NEED HELP QUICK Why can we see Codominance more in flowers that in people?
each gene came in just two different versions, ... We can see an example of codominance in the MN blood groups of humans (less ... Multiple Alleles are three or more possible alleles for one individual trait.
what types of data would a meteorologist need to collect to demonstrate the presence of a cyclone in a specific region?
Answer:
Surface temperature and lower air pressure.
Explanation:
Surface temperature and lower air pressure are the types of data would a meteorologist need to collect in order to demonstrate the presence of a cyclone in a specific region. For the formation of cyclone, warm and moist air is required so surface temperature and lower air pressure are the data that gives information that the cyclone is present in a particular area or not.
why did the Mt. Pinatubo eruption result in global temperatures dropping almost two degrees?
In the case of Mount Pinatubo, the result was a measurable cooling of the Earth's surface for a period of almost two years.
What is Global temperature?The idea of a global average temperature might seem strange. After all, the difference in the temperature at the highest and lowest points on Earth right now is probably greater than 100°F (55°C).
In both the Northern Hemisphere and the Southern Hemisphere, temperatures change from day to day and between seasonal extremes. As a result, some regions of Earth are fairly cold while others are extremely hot.
Thus, it may appear absurd to talk about the "average" temperature. The idea of a global average temperature is useful for identifying and monitoring changes in the Earth's energy budget. Scientists use temperature readings from around the world to determine the average global temperature.
Therefore, In the case of Mount Pinatubo, the result was a measurable cooling of the Earth's surface for a period of almost two years.
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A recessive trait is defined as
A. one that is expressed when the dominant allele is not present.
B. one that is never expressed.
C. one that is always expressed.
D.one that is expressed whenever it is present.
Answer:
Recessive traits are traits carried in a persons genes without being expressed because they are masked by the dominant trait. Therefore the answer is A.
Explanation:
Recessive traits can be expressed so B is incorrect. It is not always expressed so C is incorrect. Just because a recessive trait is present does not mean it will be expressed, and if that were true it would always be expressed, so D is incorrect as well.
What type of light caused a plant to photosynthesize and what type of light caused damage to a plant? :3
Answer: The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm). Therefore, the best light sources for photosynthesis should ideally emit light in the blue and red ranges.
Explanation:
Answer: UV-B radiation
Explanation:
Which other three insects are closely related to ants and also have social behaviors
Answer:
Termites, wasps and bees
Explanation:
Wasps and bees - they live in hives to raise their larvae and use pheromones to communicate. They also have a queen in both.
Termites - practically the same thing as ants but they live in large mounds and have great communicaton.
How do cancer cells affect healthy cells?
Answer:
Cancer cells also make enzymes that break down normal cells and tissues as they grow. Cancer that grows into nearby tissue is called local invasion or invasive cancer. Cancer can also spread from where it first started to other parts of the body. This process is called metastasis
Answer:
Gene mutations in cancer cells interfere with the normal instructions in a cell and can cause it to grow out of control or not die when it should. A cancer can continue to grow because cancer cells act differently than normal cells. Cancer cells are different from normal cells because they: divide out of control.
Explanation:
bone becomes moist when kept in dilute hydrochloric acid, why?
Answer:
bone. when a bone is dipped into hcl medium, the calcium of bone slowly starts to dissolve due to action of strong acid
Explanation:
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A woman who has a sex-linked recessive trait has a son with a man who does not have that trait.
Which of the following is true about their son?
Choose 1 answer:
(Choice A)
A
There is a 0% chance he will be affected.
(Choice B)
B
There is a 50% chance he will be unaffected.
(Choice C)
C
He can only be an unaffected carrier.
(Choice D)
D
There is a 100% chance he will be affected.
Explanation:
50% chance of a having a girl without the disease who is a carrier. This means that none of his children would actually show the signs ... choice A.
Answer:
100 percent
Explanation:
During _________________________, the chromosomes are attached to the spindle fibers, separate and move to each end of the cell.
Answer:
(A) Metaphase
Explanation:
The metaphase is when chromosomes are lined up and each sister chromatid is attached to a spindle fiber. Which will place all of the chromosomes in the proper place in the cell.
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DNA is considered the blueprint of life, yet in eukaryotic organisms, such as humans, it never leaves the nucleus. Which of the following is the best explanation for how DNA provides the code for physical traits and characteristics, even though it never enters the cytoplasm? *
what's the answer?? D:
A. The DNA in the nucleus is transcribed into mRNA, which can then leave the nucleus and be translated at the ribosome into proteins, which make up physical traits and characteristics.
B. Under the right conditions, DNA turns into RNA so it can leave the nucleus, then it is translated into proteins which make up physical traits and characteristics.
C. The DNA in the nucleus is translated into proteins, which are able to leave the nucleus and enter the cytoplasm, where transcription of mRNA can occur. The mRNA then makes up the physical traits and characteristics.
D.Inside the nucleus, DNA is transcribed into mRNA, which is then translated into proteins. These proteins can then leave the nucleus and make up physical traits and characteristics.
Answer: B
Explanation: The DNA in the nucleus can be transcribed in mRNA, which can then leave the nucleus and be translated into proteins, which make up physical traits and characteristics.
Gene expression is influenced by many factors. Which of the following is a factor in gene
expression?
Answer:
Answer: The Environment.
Environmental factors, such as diet, medicines, or exposure to toxins, can change how genes are expressed.
What are factors affecting gene expression?Gene expression is the process through which a gene's information is used to create a functioning gene product, allowing it to produce end products like proteins or non-coding RNA and ultimately have an impact on phenotypes.
Expressivity can be impacted by a number of elements, such as genetic make-up, exposure to dangerous substances, other environmental effects, and age. Penetrance and expressivity both have a range: People who carry the gene may or may not exhibit the trait, and when they do, the trait's expression can take many different forms.
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Which is a feature of a cladogram?
A The characteristics must be shared among the organisms.
B The characteristics must be different among the organisms.
C It must contain at least three different shared characteristics.
D It must contain at least three different groups of organisms.
Answer:
C
Explanation:
When are genes in dna expressed?
when genes produces protein in a cell.
What does denaturing mean and what things could cause denaturation to occur?
what is the interaction between organisms or animals for resouces mates shelter and space
Answer:
Symbiosis
Explanation:
Another category of interactions between organisms has to do with close, usually long-term interaction between different types of organisms. These interactions are called symbiosis
Which of the following is NOT a difference between DNA and RNA?
Group of answer choices
Types of Nitrogen-bases found in the molecule
Ability to be found in the cytoplasm of the cell
Number of strands in the molecule
Ability to be found in the nucleus of the cell
Answer:
# of strands in the molecule
Explanation:
What does it take to survive and reproduce?
Answer:
in order to survive and reproduce you need to follow the characteristics of life meaining ablilty to respond to eviroment, grow and develope, have cells, reproduce, use energy, go through homeostasis, etc
Explanation:
1. The babies of a blue fish and a red fish all have blue and red spots for skin color. This is an example of which of the following:
* O Co-dominance
O Incomplete dominance
O Multiple alleles
O Sex linked traits
Answer:
Co-Dominance
Explanation:
Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.
Example:
A brown cow and a white cow have a baby. The baby cow is white with brown spots. The baby cow is a result of co-dominant offspring.
Define in your own words, define the terms genotype and phenotype
Answer:
genotype: A cell's, an individual's, or an organism's genetic makeup (genome). The genotype is separate from the cell's, individual's, or organism's manifested characteristics, or phenotype.
phenotype: is a set of observable characteristics about a person, such as height, eye color, and blood type. The genotype is the genetic contribution to the phenotype. Some characteristics are heavily influenced by genetics, whereas others are heavily influenced by environmental circumstances.:
OAmalOHopeO
A family decides that they want to produce Chihuahuas with long hair. Identify a procedure that could be used to make sure that the puppies all have long hair SC.912.L.16.10
A. All of the above
B. Genetic engineering could be used to manufacture puppies with long hair
C. Selectively breeding two dogs with long hair to produce long-haired puppies
D. A long-haired dog could be cloned to produce long haired puppies
Answer:
A
Explanation:
The procedure that could be used to make sure that the puppies all have long hair is selectively breeding two dogs with long hair to produce long-haired puppies. Therefore, the correct option is C.
What is selective breeding of dogs?Selective breeding involves mating two dogs with desirable traits (in this case, long hair) in order to produce offspring with those traits. Over time, this can lead to a population of dogs that consistently exhibit the desired trait.
Genetic engineering (option B) and cloning (option D) are not currently practical or ethical methods for producing long-haired Chihuahuas. These techniques are complex, expensive, and not yet reliable for producing specific traits in animals. Additionally, the ethics of these methods are still under debate.Therefore, the correct option is C.
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A student is investigating the role of cellular transport in maintaining homeostasis. The student covers one end of a tube containing a 10% sugar solution with a semipermeable membrane. The student places the tube into a beaker that contains a 5% sugar solution. The student observes water from the beaker entering the tube. Which best describes the type of cellular transport that the student is investigating?
A
The student is investigating the active transport of diffusion.
B
The student is investigating the active transport of osmosis.
C
The student is investigating the passive transport of diffusion.
D
The student is investigating the passive transport of osmosis.
The answer that best described the type of cellular transport that the student is investigating would be passive transport of osmosis: The correct option would be D.
To recall: osmosis is simply the movement of water molecules from the region of high water potential to the region of low water potential through a semi-permeable membrane.
From this definition:
osmosis has to do with movement of water moleculesosmosis requires no energy in order to happenThe student observed the movement of water molecules from the beaker (high water potential) into the test tube (low water potential). Hence, active transport and diffusion are ruled out with osmosis being the only correct option.
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What are the 3 stages of the cell cycle in order?
Answer:
The cell cycle is composed of interphase (G₁, S, and G₂ phases), followed by the mitotic phase (mitosis and cytokinesis), and G₀ phase.
The allele for red feathers (R) is dominant and the allele for brown feathers (r) is recessive. If the following cross occurs, what are the possible genotypes and phenotypes possible and what is the probability of each occurring?
Answer:
Genotype: Rr
Phenotype: Red feather
probability: RR: 0%, Rr: 100%, rr: 0%
Explanation:
Punnet Square:
R R
r. Rr. Rr
r Rr Rr
TRUE/FLASE the function of DNA is to store genetic material ( please help its due right now )
the answer is true. please correct me if I'm wrong !,
but I hope this has helped you.
While most of the Earth is covered with water, only a small amount of water on Earth is drinkable. Explain why some water resources on Earth are safe to drink, while others are not.
Answer:
cause some have chemicals
Answer:
(1) All water (largest sphere over western U.S., 860 miles (1,385 kilometers) in diameter)
(2) Fresh liquid water in the ground, lakes, swamps, and rivers (mid-sized sphere over Kentucky, 169.5 miles (272.8 kilometers) in diameter), and
(3) Fresh-water lakes and rivers (smallest sphere over Georgia, 34.9 miles i(56.2 kilometers) n diameter). not sure if it help but i hope so