Answer:
A. Mutation always increases genetic variation,which also increases the rate of evolution.
How are the terms ovum, zygote, and embryo related?
Answer:
ovum fusing with sperm will give zygote (fertilization)
The zygote later on develops to an embryo in the womb after implantation.
hello humans ~
. I am a double-membraned cell organelle. I produce energy-rich molecules called ATP. I have my own genetic material. Who am I?
A. Cell membrane
B. Plastid
C. Nucleus
D. Mitochondrion
Answer:
Mitochondria
Explanation:
Mitochondria are double-membraned cell organelle present in the cytoplasm
Hope it helps!!!brainliest pls!!!Answer:
Mitochondrion
Explanation:
Mitochondria are organelles within the cell that contain genetic material and produce ATP.
A key step in developing a new explanation is:______.
a. making observations about a place or process.
b. asking questions about the observations.
c. proposing an interpretation that can be tested.
d. collecting new observations to test predictions.
e. All of these choices are correct.
A key step in developing a new explanation is c. proposing an interpretation that can be tested.
What steps are involved in having a hypothesis become an established theory?A U.S. government agent votes on whether the belief is taken. A United Nations scientific forum votes on whether the belief is taken. The hypothesis is constant with further data and probes used to test its forecasts.
Thus, option "C" is correct.
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What component of Earth's atmosphere exists entirely as a result of photosynthesis?
O oxygen gas
O water vapor
O nitrogen gas
O carbon dioxide gas
Answer:
oxygen gas
Explanation:
because oxygen is needed for life on Earth
A river has historically had a large population of wetland grasses growing near the shore. Which statement describes the most likely long-term effect of introducing an aggressive, nonnative aquatic plant species into the river?.
Answer:
The grasses will adapt to live on dryer soil.
Explanation:
The statement describes the most likely long-term effect of introducing an aggressive, nonnative aquatic plant species into the river is the grasses will adapt to live on dryer soil.
What is nonnative species?The nonnative species also known as non-indigenous species. The any species which is not found in ecosystem is called nonnative species. The species introduced naturally and not by human agency.The non-native species that causes harm to the environment or ecosystem is called invasive species.
The most likely effect these nonnative flathead catfish could have on the ecology of the Yadkin river is that they could cause a decline in the population of native fish species that they prey on.
Nonnative refers to any species that is not native to a particular area or ecosystem. Nonnative species can be referred to as exotic, alien, or introduced species.
Therefore, The statement describes the most likely long-term effect of introducing an aggressive, nonnative aquatic plant species into the river is the grasses will adapt to live on dryer soil.
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The brilliant colors of leaves in the fall are the result of
Answer:
Chlorophyll breaks down
Explanation:
However, as the length of daylight and temperature change in the fall, the leaves' food-making activity comes to a halt. The chlorophyll degrades, the green hue fades, and the yellow to orange colors emerge, contributing to the leaves' fall brilliance.
In people, the allele for brown eye color (B) is dominant over the allele for green eye color (b), and the allele for brown hair color (H), is dominant over the allele for having red hair color (h). (6F) What is the expected phenotypic ratio of the offspring of a BbHh x BbHh cross if these alleles sort independently?
A) 4 brown/brown : 4 brown/red : 4 green/brown : 4 green/red
B) 12 brown/brown : 1 brown/red : 2 green/brown : 1 green/red
C) 9 brown/brown : 3 brown/red : 3 green/brown : 1 green/red
D) 16 brown/brown : 0 brown/red : 0 green/brown: 0 green/red
Answer:
C) 9 brown/brown : 3 brown/red : 3 green/brown : 1 green/red
Use a protractor to draw a parallelogram that has two side lengths of 5 inches and 2 inches and two adjacent angles that measure 25° and 155°.
What are the measures of the other two angles in the parallelogram?
a25° and 130°
b25° and 155°
c130° and 155°
d130° and 170°
If the adjacent angles of a parallelogram measure 25° and 155°, the other two angles would measure 25° and 155°
What is a parallelogram?
A parallelogram is a quadrilateral (has four sides and four angles) in which both sides are equal and parallel to each other. Opposite angles of a parallelogram have the same measure and the diagonals are equal in length.
If the adjacent angles of a parallelogram measure 25° and 155°, the other two angles would measure 25° and 155° because opposite angles are equal.
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Answer: The answer is 25 and 155
Explanation:
Which of the following is not a way that nonnative organisms are introduced to new aquatic ecosystems related to commerce? a. cargo ship hulls b. recreational boats c. escape from aquariums d. migration please select the best answer from the choices provided a b c d
The correct option is "D" Migration.
Since the term aquaculture mainly refers to the cultivation of aquatic organisms in controlled aquatic environments for any commercial, recreational or public purpose. whereas external organisms are added to an ecosystem in order to raise their number keeping in mind the availability of food for them.
For the creation of new aquatic ecosystem cargo ship hulls, recreational boats, organisms escaping from the aquariums can be useful as these methods are non-natural and are disturbing the original productivity and stability of the ecosystem.
What is migration?Migration is a natural phenomenon in which non-native organisms move to another habitat in search of food required for survival.
Thus, Migration is not a way that nonnative organisms are introduced to new aquatic ecosystems related to commerce.
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Answer:
D. Migration
Explanation:
Aqua culture is the phenomena for rearing fish and other aquatic organisms with high commercial value for food production. Non- native organisms are added in an ecosystem in order to raise their number keeping in mind the availability of food for them. For creation of new aquatic ecosystem cargo ship hulls, recreational boats, organisms escape from the aquariums can be useful as these methods are non- natural and they are disturbing the original productivity and stability of ecosystem by introducing nonnative organisms to new aquatic ecosystem. But migration is a natural phenomena in which non-native organisms move to other habitat in search for food and habitat required for survival.
GOT IT RIGHT, HOPE THIS HELPS!
what do you notice about the number of carbons hydrogens and oxygens in the reactants compared to the product?
Answer:
to answer this question, we need to know the chemical reaction so u should write it or attach it.
Habitat ______ imposes fluctuations in availability of basic needs such as food and water upon organisms.
Answer: Habitat variability imposes fluctuations in availability of basic needs such as food and water upon organisms.
True or False: Ribosomal RNA is processed after transcription by cleaving and trimming of the molecule.
Answer:false
Explanation: because it occurs in the nucleus
QUESTION 14
The haploid number of chromosomes of a palm tree is 30. The number of chromosomes in root, stem, and leaf cells would be
a. 10.
b 20.
c. 30.
d. 40.
e. 60.
what is the difference between fats and oil ?
Answer:
fats are made up of high levels of saturated fatty acid that take form at room temperature and oils are made up of mostly unsaturated fatty acid which are liquid at room temp
Sorry to bother you guys again but I need help with this one too
Answer:
endoplasmic reticulum(ER)
Explanation:
b/c for making proteins use to endoplasmic reticulum or (ER).
what is auto and factory emissions
What organism has been found in the oldest fossils?.
Answer:
cyanobacteria
Explanation:
The cyanobacteria have an extensive fossil record. The oldest known fossils, in fact, are cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old.
which of the following species are most likely to be in competition
a) tigers and Ferns
b)Bears and reccoons
c) Files and rabbits
d) Lynx and Squirrels
why it is important for a cell to be able to differentiate?
Answer:
they are able to perform a specialized function in the body
I will write essay, but need the 3 reasons why.
In this activity, you will need to analyze the reasons that people give for smoking. This may be done by interviewing some people you know that smoke or by going online and researching reasons persons give for smoking.
Below, in the downloadable essay, list three reasons why people smoke. Weigh each reason against the facts. In other words, prove that the reasons not to smoke far outweigh the reasons to smoke. Information on smoking can be found at the Centers for Disease Control and Prevention (CDC).
CDC Information on Smoking and Tobacco Use
1. Reason:
Opposing Argument/Contradictory Facts:
2. Reason:
Opposing Argument/Contradictory Facts:
3. Reason:
Opposing Argument/Contradictory Facts:
Answer:
Some reasons that people give for smoking:
> they believe it reduces stress and anxiety ( scientific studies show this isn't factual and the chemicals within smoking products is only made appealing and or distracting to make the user believe so. It actually heightens stress levels and lowers health levels)
> this sounds cliche but, teens often think its cool or get peer pressured into it. They find themselves wanting to try harmful substances and get addicted. ( in one study there were d r u g s found in smoking products aimed to get the attention of children and young adults. It's all a marketing ploy for business men and women to collect money as you slowly grow more and more breathless)
> lastly, "it's not that bad for you" often, markets and cig stores tell potential buyers its not as bad as other things. Some say its not harmful at all.( Lung disease,gum disease,heart failure,etc. all disprove this. Each year about 480,000 people die from the affects of smoking)
Explanation:
is urbanization density dependent or density independent
Answer:
urbanization is dependent factor ig
what happens when oil can hold any more heat energy
Answer:
Explanation:
oil constitutes a major storage for heat, acting as a reservoir of energy during the day and source of heat to the surface at night. The soil stores energy during the warm season and releases it to air during the cold season Geiger et al.
Descube what scientist know about exoplanets, planet-like object outside the solar system.
Answer:
Exoplanets are planets beyond our own solar system. Thousands have been discovered in the past two decades, mostly with NASA's Kepler Space Telescope. These worlds come in a huge variety of sizes and orbits. Some are gigantic planets hugging close to their parent stars; others are icy, some rocky.
How do stem cells relate to the cell cycle?
Answer:
Murine, primate and human embryonic stem cells (ESCs) exhibit a very unusual cell cycle structure, characterized by a short G1 phase and a high proportion of cells in the S-phase.
Explanation:
Normally, embryonic stem (ES) cells proliferate quickly during differentiation and do not differentiate simply by cell cycle slowing. In this paper, it is shown that the role of the cell cycle in terminal stages of differentiation can be adapted for and extended into ES cells.
What is the function of DNA? It takes the message of the amino acid order for proteins to the cytoplasm, where the protein will be built. It serves as an enzyme to speed up many kinds of biochemical reactions in the cell. It builds proteins from amino acids using the instructions stored in RNA. It stores in the nucleus the information a cell needs to make its proteins with the right orders of amino acids.
Answer: The answer is B. (It stores in the nucleus the information a cell needs to make its proteins with the right orders of amino acids.)
Explanation: I took the test and this was the answer! :)
The function of DNA (deoxyribonucleic acid) is to store and transmit genetic information from one generation to the next, and it stores in the nucleus the information a cell needs to make its proteins with the right orders of amino acids. That is the last option.
What is DNA?DNA is a molecule composed of long chains of nucleotides. A nucleotide is made up of three components: a sugar molecule, a phosphate group, and a nitrogenous base. The process of gene expression begins with the transcription of DNA into RNA (ribonucleic acid). RNA is a molecule similar in structure to DNA but with a few key differences, such as the presence of the nitrogenous base uracil (U) instead of thymine. DNA also plays a role in the regulation of gene expression. Certain regions of DNA, called promoters and enhancers, help to control when and where a gene is expressed.
Hence, it stores in the nucleus the information a cell needs to make its proteins with the right orders of amino acids. That is the last option.
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Please help!!! I’ll mark brainly
Answer:
2. b
3. B
4. BB, Bb, bb
5. bb
6.Bb, BB
7.Bb
(couldn't answer the whole question, sorry)
What do you know about climate? causes and impacts?
Answer:
small thing about climate change
Explanation:
Climate Change is trapping Co2 into the earth's atmosphere, raising the temperature of the Earth. Because of that, it's melting the Antarctic and killing millions of animals. Not only that, but it's also causing droughts, and usually droughts are the cause(s) of famine which kill millions of not only animals, but humans too.
How is the transcription start site determined in bacteria?.
Answer:
by the binding of RNA polymerase to the consensus sequences of the promoter
Explanation:
BTW: a promoter is a DNA Sequence on to which transcription machinery bind and initiate transcription .
hope this helps
have an awesome day - TJ
1)Explain what DNA means
2)Explain the 3 components of DNA (Pentose Sugar, Phosphate, Nitrogenous Bases)
3)Explain the 2 types of Nitrogenous bases (Purines vs. Pyrimidines)
4)Explain Chargaff's rules for base -pairing
5)Identify what objects/colors you used for your DNA Model
(Ex Key A=Red T= Green etc.)
Phosphate group = toothpick end
6)Twist your model and explain how it is a helix
7)Explain how Muslims can understand DNA from the Islamic Worldview
Answer:
DNA
DNADNADeoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
2) (i) A pentose sugar is a monosaccharide with 5 carbon atoms. Pentose sugars are the deoxyribose sugars, which are part of nucleotides in DNA
(Ii) a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid H ₃PO ₄. The phosphate or orthophosphate ion [PO ₄]³⁻ is derived from phosphoric acid by the removal of three protons H⁺
Formula: PO₄³⁻
Molar mass: 94.9714 g/mol
3D model (JSmol): Interactive image; Interactive image; Interactive image; Interactive image
Beilstein Reference: 3903772
Conjugate acid: Monohydrogen phosphate
Gmelin Reference: 1997
(III) Nucleobases, also known as nitrogenous bases or often simply bases, are nitrogen-containing biological compounds that form nucleosides, which, in turn, are components of nucleotides, with all of these monomers constituting the basic building blocks of nucleic acids.
3) purine nitrogenous bases:-
Purines and Pyrimidines are nitrogenous bases that make up the two different kinds of nucleotide bases in DNA and RNA. The two-carbon nitrogen ring bases (adenine and guanine) are purines, while the one-carbon nitrogen ring bases (thymine and cytosine) are pyrimidines.
pyrimidine nitrogenous bases
Pyrimidine: A nitrogenous base similar to benzene (a six-membered ring) and includes cytosine, thymine, and uracil as bases used for DNA or RNA.
The pyrimidine bases are thymine (5-methyl-2,4-dioxipyrimidine), cytosine (2-oxo-4-aminopyrimidine), and uracil (2,4-dioxoypyrimidine)
4) Explain Chargaff's rules for base -pairing
Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio of purine and pyrimidine bases (i.e., A+G=T+C ) and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.
5)Identify what objects/colors you used for your DNA Model
The four nitrogenous bases that compose DNA nucleotides are shown in bright colors: adenine (A, green), thymine (T, red), cytosine (C, orange), and guanine (G, blue).
6)Twist your model and explain how it is a helix
Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.
The double helix of DNA is, like its name implies, in the shape of a helix which is essentially a three dimensional spiral. The double comes from the fact that the helix is made of two long strands of DNA that are intertwined—sort of like a twisted ladder.
Which of the following statements reflects a cognitive characteristic that is present during late adulthood? a. during late adulthood, one is full of knowledge and wisdom. b. during late adulthood, one pursues new challenges. c. during late adulthood, one reflects on changes and mortality. d. during late adulthood, one has a better sense of identity.
The statement that reflects a cognitive characteristic that is present during late adulthood is, During late adulthood, one is full of knowledge and wisdom. So, the correct option is A.
What do you mean by Cognitive Characteristics?Cognitive characteristics may be defined as an immersive and active process that engages your senses in a constructive and long-lasting way.
Cognitive characteristics teach you to maximize your brain potential and make it easier to connect new information and ideas during late adulthood.
Therefore, the statement that reflects a cognitive characteristic that is present during late adulthood is, During late adulthood, one is full of knowledge and wisdom.
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Answer:
a. during late adulthood, one is full of knowledge and wisdom.
Explanation: