a. Genes are a section of DNA that are in charge of different functions like making proteins. Long strands of DNA with lots of genes make up chromosomes. DNA molecules are found in chromosomes. Chromosomes are located inside of the nucleus of cells.
b. DNA is tightly packed up to fit in the nucleus of every cell. As shown in the animation, a DNA molecule wraps around histone proteins to form tight loops called nucleosomes. These nucleosomes coil and stack together to form fibers called chromatin. Chromatin, in turn, loops and folds with the help of additional proteins to form chromosomes.
c. Mitosis is the phase of the cell cycle where chromosomes in the nucleus are evenly divided between two cells. When the cell division process is complete, two daughter cells with identical genetic material are produced.
A. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies. Each DNA sequence that contains instructions to make a protein is known as a gene.
B. To package DNA inside the nucleus, cells wrap their DNA strands around scaffolding proteins to form a coiled condensed structure called chromatin. Chromatin is further folded into higher orders of structure that form the characteristic shape of chromosomes.
C. During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells. ... Meiosis also allows genetic variation through a process of DNA shuffling while the cells are dividing.
stion: Will human activity impact the sustainability of a major ecosystem (Biosphere) on Earth?
how is the energy liberated from the atp molecule?
Answer:
When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP). ... Likewise, energy is also released when a phosphate is removed from ADP to form adenosine monophosphate (AMP).
When a tall plant is crossed with a short plant, some of the offspring are short. What are the genotypes of the parents and the offspring? What is the phenotypic result in the offspring?
Answer:
Tall plant with genotypes Pp.
Explanation:
Make the question into a box represented what you are crossing and and the parents genotypes look like.
PP - Tall Plant
Pp - Tall Plant
pp - Short Plant
X P P
p Pp Pp
p Pp Pp
All of the offspring will be a Tall Plant with the genotype Pp.
Tall plants has genotypes [tex]\boldsymbol{Pp}[/tex].
Define genotypes.An individual's genotype is its entire set of chromosomes material. The alleles or variations that a person holds in a given gene or genetic region are referred to as genotype.
Some of the offspring of a tall plant crossing with a short crop are short, tall plants with genotypes [tex]\boldsymbol{Pp}[/tex]
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.
Proteins in eukaryotic cells which control the progression of cells through the cell cycle are –
cyclins
recyclins
cytokines
cytochromes
Answer:
cyclins
Explanation:
Which of the following statements would be an inference, NOT an
observation?
The diagram shows three large carbohydrate polysaccharides.
Cellulose
Starch
Glycogen
Highly branched (glycogen)
Linear (cellulose)
Branched (starch)
What is the main difference between starch and glycogen?
O A. Humans can chew starch but cannot chew glycogen
B. Humans make glycogen but cannot make starch, which is only found in plants.
O C. Humans dissolve glycogen in blood plasma but cannot dissolve cellulose.
D. Human muscle cells can absorb cellulose but cannot absorb glycogen and starch.
Answer:
B.) Humans make glycogen but cannot make starch, which is only found in plants
Explanation:
Humans store carbohydrates as glycogen, whereas plants store extra carbohydrates as starch.
Alion eats the meat of a buffalo. How do the molecules in the buffalo most likey act as building blocks for the
lion?
Answer:
ATP production
Explanation:
When the lion eats the buffalo, the eaten material is broken down to give ATP (Adenosine Triphosphate), which in turn helps the body in its metabolic processes like the synthesis of carbohydrates and proteins, which act as a building block for the lion.
 what is abbreviation for heterozygous?
Answer:
The answer is Aa
Explanation:
I'm assuming that you're referring to the lettering of genes. If that's the case, the answer is Aa. A heterozygous is Aa. Hope this is what you were looking for!
Answer:
The correct answer is Het.
A student creates a list of characteristics for a human cell and a virus. 1. smaller than an organelle 2. absence of metabolic activity 3. grows by dividing 4. presence of enzymes in the cytoplasm 5. surrounded by a protein coat Which characteristics are associated only with a virus? O 1, 2, and 3 O 1,2, and 5 O 2,3, and 4 O 2,3, and 5
Answer:
1, 2, and 5
Explanation:
Viruses are pathogenic microorganisms that lack the ability to thrive and reproduce outside of a living host cell. Their structure is simple - they consist of a nucleic acid molecule surrounded by a protein coating and sometimes an outer envelope. They are too small to be seen by a light microscope.
As they are way smaller than living cells, viruses are smaller than organelles as well. They don't have their own metabolism. Their reproduction is not based on division. They don't have any organelles, including the cytoplasm. They are surrounded by a protein coat called the capsid.
Based on this information, we can see that the correct statements are statements 1, 2, and 5.
The atomic mass of arsenic is 75 atomic mass units; a neutral atom of asennic has 33 electrons. how many neutrons does arsenic normally have?
a.33 b.42 c.75 d.108
Answer:
42
Explanation:
Atoms have a neutral charge overall, which means they have an equal numbers of positively-charged protons and negatively-charged electrons. Here, an atom of arsenic with 33 electrons must also have 33 protons.
The mass of any atom is contained in its nucleus, a part made up of protons and neutrons - particles with no charge. Both protons and neutrons are exactly 1 atomic mass unit each, so to find the atomic mass of an atom, we can use the formula
(# of protons) + (# of neutrons) = atomic mass
or equivalently:
atomic mass - (# of protons) = (# of neutrons).
For arsenic, we have an atomic mass of 75 amu and 33 protons, so using our formula:
# of neutron = 75 - 33 = 42 neutrons
#3.) Which of the following is true about the carbon cycle?
a
Combustion reduces carbon dioxide gas.
b
Respiration uses carbon dioxide gas.
с
Decomposition recycles the carbon compounds in nature and produces carbon dioxide.
d
Photosynthesis removes carbon dioxide from the atmosphere and makes organic matter.
How can the Nimitz ship float
what causes the Coriolanus effect
Over the years, scientific advancements have brought both benefits and disadvantages to society. Which of the
following is an area which has been both positively and negatively affected by scientific advancements?
a. food safety
b. waste production
c. climate
d. all of the above
Scientific knowledge is important to develop new technologies and solve problems. Scientific advancement in waste production brought both benefits and disadvantages to the society.
What is waste production?Waste production is the use of material and energy including the depletion of the Earth's renewable and non-renewable resources.
The recycling of waste can have many pros and cons, the benefits are:
Reduce energy consumption.Decrease pollution.Environmental friendly.Resource depletion in a slow rate.The disadvantages includes:
High cost.Recycled products are often of low quality.Thus, the correct option is b.
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At which temperature is water a solid?
A. 30 °F
B. 75 °F
C. 127 °F
D. 214 °F
Which human body system performs a function similar to what the mitochondria perform for the cell?
Answer:
the digestive system
Explanation:
because like mitochondria it helps other organelles like lysomes are responsible for digesting and recycling toxic substances and waste
Will you find different nitrogenous bases in humans and other animals?
Answer:
No
Explanation:
The universality of the genetic code refers to how the codons for amino acids are always the same in almost all species. Amino acids have corresponding nitrogenous bases in pairs of three called a codon. so to have the same amino acids, all species would need the same nitrogenous bases.
FREE BRAINLYEST if you can answer this question correctly. If you dig a 6 foot deep hole how deep is the hole
Answer: 6 feet
Explanation: It says it in the question
Answer:
its about 20 feet
Explanation:
Which describes a group of organisms that are members of a species?
Answer:
They can breed and produce offspring that can breed.
Explanation:
The options you were given are the following:
They can breed and produce offspring that can breed. They are members of the same community. They live in the same ecosystem, community, and biome. They have similar physical characteristics.A species can be defined as a group of similar organisms that can reproduce and produce offspring that can produce as well. This is why the first option is the correct one.
In ecology, the term community refers to a group of populations of two or more different species that inhabit the same area. More than one species can be found in a biome and ecosystem as well, which is why the second and third options are incorrect.
Some organisms can look very similar but belong to different species. This is why the fourth option is not correct, either.
Why is the Sun considered “the boss” of the water cycle?
Answer:
The sun is the start of the water cycle
Explanation:
Water can not evaporate without the sun.
A plant with small, silver-grey leaves that are oriented vertically is most likely to be found in which habitat?
Answer:
el sapo
Explanation:el sapo
el sapo
A plant with small, silver-grey leaves that are oriented vertically is most likely to be found in a warm dry habitat.
What is a Habitat?
A habitat is a dwelling place of a plant in which they live to survive. Such a place must have adequate supplies to enhance life forms such as:
lightwater food, andspace.The small plant with silver-grey leaves is known to be a cotton lavender.
They are perennial plants that live in warm, dry climates and sunshine to survive. They are commonly found in the Mediterranean areas.Learn more about habitat here:
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Mark’s discovery has Emily concerned. She has blue eyes, while both of her parents have brown eyes. Is it possible for Emily to be their biological daughter?
Which term refers to similar structures that related species have inherited from a common ancestor?
Answer:
homologous structures.
Explanation:
If two organisms look very similar during their early stages of development, this is evidence that the organisms. evolved from a common ancestor.
Scientists looking at the fossil record observe that in a certain kind of spiny fish, the fish evolves to have a greater number of spines over time. What is a reasonable conclusion from this observation?
A) All fish within the species always have the same number of spines,
B) This kind of spiny fish does not have many predators in its habitat,
C) The habitat of the fish must be going through a rapid change over time,
D) The greater number of spines provides some advantage to the fish,
(help please I gotta submit this soon)
Answer:
The answer is D. The Greater number of spines provides some advantages to the fish.
A reasonable conclusion from this observation is the greater number of spines provides some advantages to the fish. The correct option is D).
What are fossil records?Paleontologists, archaeologists, and geologists use the fossil record to put major events and species in the correct geologic epoch. It is based on the Law of Superposition, which stipulates that the bottom layers in undisturbed rock sequences are older than the top layers.
Fossils give vital evidence for evolution and plant and animal adaption to their habitats. Fossil data documents how creatures evolved and how this process can be represented by a 'tree of life,' demonstrating that all species are connected to one another.
Therefore, the correct option is D) The greater number of spines provides some advantage to the fish.
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Can someone help me solve this???pls
(GIVING BRAINLIEST!!)
All planets in the solar system have surfaces that are made up of either one of two materials. What are the two materials?
A) Rock and gas
B) Water and dust
C) Ice and rock
D) Dust and gas
A) Rock and gas
The Solar System is the gravitationally bound system that includes the Sun and its orbiting components.
The four gas and ice giants, as well as the four terrestrial planets, are the largest of the worlds that orbit the Sun directly, followed by an unknown number of dwarf planets and uncountable minor Solar System components.
All planets in the solar system have surfaces that are made up of A) Rock and gas
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how does messenger rna work inside the cell
Answer:
A RNA polymerase separates the hydrogen bases of a gene to produce a strand of messenger RNA, which leaves to nucleus. When a ribosome attaches itself to the messenger RNA, it reads the RNA 3 bases at a time to build amino acids which are then folded into proteins.
More explained process:
Note: The description below will explain the process of “protein synthesis”, in which the mRNA (messenger RNA) takes part of.
In the process of protein synthesis, the first step is called “transcription”. In transcription, the mRNA (messenger RNA) unwinds DNA base pairs, and pairs it with the single strand of RNA (A,U,C,&G) . Then the mRNA moves out of the nucleus and into the cytoplasm to ribosome. That process is called “translation”. In translation, there is a molecule called tRNA (transfer RNA). There is an amino acid which corresponds to the base pairs of RNA in top, which will create a chain of amino acids. [ For example, the bases are AUC, the corresponding amino acid will be isoleucine (Ile). Next, the tRNA molecules carry the amino acids to mRNA, reads the RNA 3 bases at a time to build an amino acid chain which are then folded into proteins.
Which of these molecules is not a macromolecule made up of many smaller
organic molecules?
O A. Complex carbohydrate
B. Nucleic acid
O C. Protein
D. Water
SUBMIT
( i don’t think B. and C. are it) (might be wrong but have a feeling.
Answer:
D.
hope this helps!!:)
Explanation:
Answer:
D. Water
Explanation:
Water is not a macromolecule, it is a micromolecule.
In DNA what is the complementary strand to GGACG?
Answer:
CCTGC
Explanation:
Adenine (A) and Thymine (T) are base-pairs whilst Cytosine (C) and Guanine (G) are base-pairs as well. Although they only go in the order A-T and C-G, you will never see Adenine and Cytosine together on a DNA strand.
Which biological scenario(s) best describes phenotypic plasticity for a trait?
I. Each person has a specific blood type.
II. Red blood cell counts differ in higher altitudes.
III. One identical twin is taller than the other.
A)I only
B)II only
C)II and III only
D)I, II, and III
Answer:
C) II and III only
Explanation:
Option 1 is not an example of phenotypic plasticity because each person is born with their own blood type and this doesn't change based on their environment and behavior.
Option 2 is an example of phenotypic plasticity because a person's red blood cell counts can increase based on their environment, i.e. moving to Denver, CO from Death Valley, CA. The higher elevation and decreased oxygen causes your body to produce more red blood cells.
Option 3 is an example of phenotypic plasticity because one twin can be taller than another because of differing behaviors, environments, etc.
