What is always at the start of natural selection?
A: reproduction
B: mutation
C: passing on genes
Answer:
passing on genesExplanation:
Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
three viral diseases for which there is not a vaccine
Answer:
Herpes, Ebola, polio
Explanation:
Answer:
there are quite a few diseases without a vaccine, but here are three of them
Explanation:
HIV/AIDS
Hookworm infection
Malaria
________ exists when the immune system does not respond to a particular antigen.
Answer:
tolerance exists when the immune system does not respond to a particular antigen.
What are the three events of Photosynthesis?
Answer:
(i) Absorption of light energy by chlorophyll.
(ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.
(iii) Reduction of carbon dioxide to carbohydrates.
I expect that this might help you out.
Explanation: The process of Photosynthesis is simple.
The three events that take place in "Photosynthesis", are:
1. Absorption of light energy by chlorophyll.
2. Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.
3. Reduction of carbon dioxide to carbohydrates.
Definition of Photosynthesis: The process by which plants and other organisms use sunlight to synthesize foods from carbon dioxide and water.
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25 A 10 meter by 10 meter plot of land has 25 trees
on it. What is the population density of the trees?
A. 0.025 trees/m2
B. 0.25 trees/m2
C. 2.5 trees/m2
D. 25 trees/m2
Answer:
stuck on the same question mg
Explanation:
Explain why and how humans depend on photosynthesis for survival.
Help please! 3:46 4/5/2022 (American)
Answer:
because when plants do photosynthesis it take our co2 and gives us oxygen which we need to survive
which statement is true of both plant and animal cells?
Answer:
I
Explanation:
Binomial nomenclature is important in the classification of organisms because... question 3 options: it's a scientific name. it's more specific than a common name. it has a two part system with italics and a capital genus and lowercase species. it is recognized by scientists everywhere no matter where they're from.
Binomial nomenclature is important in the classification of organisms because it is recognized by scientists everywhere no matter where they're from.
How is binomial nomenclature used to identify organisms?“Binomial nomenclature is the biological system of naming the organisms in which the name is organised of two words, where, the first word indicates the genus and the second term indicates the species of the organism.
Thus, it is recognized by scientists everywhere no matter where they're from
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If there is a change in a squid's messenger RNA, will this change appear in its genetic material? Will it be inherited by its offspring?
If there is a change in a squid's messenger RNA, this change does not appear in its genetic material. This change neither will be inherited by its offspring.
What is messenger RNA?During gene transcription, a fragment of DNA called gene is used as template to generate a messenger RNA (mRNA).
Subsequently, this mRNA is used as a template to create a protein by a process known as translation.
The mRNA is a molecule that carries the genetic material from DNA to protein but this process does not modify the genetic material.
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Which part of the body is the maxilla bone located?.
Answer:
upper jaw
Explanation: The maxilla is the bone that forms your upper jaw. The right and left halves of the maxilla are irregularly shaped bones that fuse together in the middle of the skull, below the nose, in an area known as the intermaxillary suture. The maxilla is a major bone of the face.
Describe two similarities between bacterial cells and animal cells
4. The main elements in Earth's crust are oxygen and
(5 Points)
O A. iron
O B. copper
O C. silicon
O D. nickel
Answer: C: Silicon
Explanation: Makes up 27.7% of Earths crust. Iron takes up 8.1% so I would say the answer is silicon.
How are proteins related to DNA? What con cause damage or a change in DNA, and how does that change the structure and function of proteins?
Answer:
hi there, proteins are related to DNA because DNA carries the instruction for synthesizing proteins, which can code for a certain amino acids based on the sequence.
Explanation:
A change in base sequence can be either good or bad. But... Usually... a mutation could be a main factor that changes the sequence of the protein, which causes it to code for a different amino acid than the original. Base pairs could either substituted, deleted, or inserted, which usually are what a mutation could be caused by or consisted of. This is also known as a gene mutation, which are changes in genes .
hope that helps!!!
food, water, living space, and diesese are examples of what
Answer:
im pretty sure it is a habitat
How much dna must be extracted/obtained to provide sufficient data.
The amount of DNA that must be extracted/obtained to provide data depends on the analyses to be made.
What is DNA?Deoxyribonucleic acid (DNA) is a molecule used by organisms to transmit hereditary characteristics across generations.
The linear order of nucleotides in the DNA molecule results useful for a variety of different types of studies.
For example, sequence homo-logy in certain genomic regions can tell us about the evolutionary history of an organism.
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Please Help!!
Which subgroup of dinosaurs’ name means “shield bearer”?
A. sauropodomorphs
B. thyreophora
C. ceratopsians
D. ornithopods
Answer: B) thyreophora
What is the genotype of the parents if allele b is dominant over allele b?.
The dominant characteristic will be phenotypically manifested in offspring whose genotype could be BB or Bb.
What is genotype?An organism's genotype is made up of all of its genetic components. The alleles or variations that an individual possesses in a certain gene or genetic region are also referred to as the genotype.
The amount of copies of the each chromosome contained in that species, commonly known as ploidy, determines how many alleles a person can have for a certain gene. In diploid organisms like humans, there are two complete sets of chromosomes, which means that each person possesses two alleles for each gene. The dominant characteristic will be phenotypically manifested in offspring whose genotype could be BB or Bb.
Therefore, the dominant characteristic will be phenotypically manifested in offspring whose genotype could be BB or Bb.
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1. Which of the following characteristics is absent in viruses?
A.
a protein capsid
B.
the ability to r e produ ce
C.
protein synthesis machinery
D.
the ability to develop gene mutations
2.Which of the following characteristics is present in both humans and archaea?
A.
the ability to maintain homeostasis
B.
the ability to as 3 xua lly reproduce
C.
a hierarchy of organ systems
D.
a cell nucleus
Which characteristic differentiates an angiosperm from a fern?
A.
the alternation of generations
B.
the presence of cotyledons
C.
the presence of vascular tissue
D.
the alternation of sporophytes
Answer:
DBDExplanation:
that's my answer
thank me later
What structural classification describes this neuron?.
Answer:
Structural classification of neurons
Explanation:
Structural classification of neurons is based upon the number of processes that extend out from the cell body. Three major groups arise from this classification: multipolar, bipolar, and unipolar neurons. Multipolar neurons are defined as having three or more processes that extend out from the cell body
1. During the normal life of a somatic animal cell, which of the following puts the observed cellular
processes in order from interphase to cytokinesis using the pictures in Diagram 1?
The diagram is not found here, but the order of steps in the cellular division is interphase (G1, S and G2) >> mitosis >> cytokinesis. It is the cell cycle.
What is the cell cycle?The cell cycle refers to the events that occur from a cell form until it divides to produce two daughter cells.
The cell cycle can be divided into interphase, mitosis and cytokinesis (i.e., division of the cell cytoplasm).
Interphase has there main steps, i.e., Growth 1 (G1) phase, Synthesis (S) phase, and Growth 2 (G2) phase.
In turn, mitosis can be divided into prophase, prometaphase, metaphase, anaphase and telophase.
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How long does it take for gums to heal after tooth extraction.
how is an increased in carbonin the atmosphere likley to affect coastal areas such as those in north carolina
Answer:
D
Explanation:
The amount of Carbon dioxide (CO₂) that is trapped in the atmosphere is released by the burning of the fossil fuels and from the industrial pollution. In addition to this, some amount of it also released by the animals and human beings. This stored CO₂ in the atmosphere is then transported to the oceans with the help of rainfall. When this CO₂ reacts with water it forms weaker acid, which is commonly known as the Carbonic acid. Due to this, the pH level of ocean water decreases. As a result of this, it affects the ocean water chemistry and the marine life. Due to this ocean acidification, the marine species namely the corals and various types of planktons are not able to form the hard parts like the shell and skeletal parts. This carbonate water dissolves the existing shells and erodes the particles away. The increase in the carbon content in the atmosphere will also lead to precipitation that will wash away the rock particles and other sediments, that are present in the coastal areas. In addition to this, the plants also will be affected due to this carbon containing water.
Mendel's Law of ________ states that alleles for 2 different genes separate during meiosis and segregate independently.
What are the two factors that determine the boundaries of a biome?.
Answer:
temperature and precipitation
there are different states of matter and each has a distinct characteristics. if ever you'll compare yourself to these states, what would you be and why?
plss help me
Answer:
A human is a solid
Explanation:
We have a definite shape and higher density than liquid or gas
Last one n m outta here..... Thanks ^^
What is the first classification?
O Kingdom
O Domain
O Genus
O Family
Answer:
Kingdom
Explanation:
This is the order of classification
Kingdom
Phylum
Class
Order
Family
Genus
Species
Compare and contrast a fossil with a trace fossil. Please help fast. I'm being timed.
Answer choices:
A. Both fossils and trace fossils are types of rocks. However, a fossil is created with large amounts of heat, and a trace fossil is created by large amounts of pressure.
Both fossils and trace fossils are types of rocks. However, a fossil is created with large amounts of heat, and a trace fossil is created by large amounts of pressure.
B. Both fossils and trace fossils are created by organisms from very long ago. However, a fossil is created by the organism itself, and a trace fossil is created by the activity of the organism rather than the organism itself.
Both fossils and trace fossils are created by organisms from very long ago. However, a fossil is created by the organism itself, and a trace fossil is created by the activity of the organism rather than the organism itself.
C. Both fossils and trace fossils are created by organisms from very long ago. However, a trace fossil is created by the organism itself, and a fossil is created by the activity of the organism rather than the organism itself.
Both fossils and trace fossils are created by organisms from very long ago. However, a trace fossil is created by the organism itself, and a fossil is created by the activity of the organism rather than the organism itself.
D. Both fossils and trace fossils are types of rocks. However, a trace fossil is created with large amounts of heat, and a fossil is created by large amounts of pressure.
Answer:
I'm going to go with b.
Explanation:
which process does not occur in the organism illustrated above
Answer:
food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
Please quick
Why is it important to design field studies that will not make wild animals associate humans with food?
Animal behaviorists have found that animals gain from developing bonds with trustworthy humans, but doing so calls for a lot of motivation and understanding about the animal's behavior.
What is animal behavior?The scientific study of non-human animal behavior is called ethology, and it often focuses on behavior in natural settings and sees behavior as an evolutionary adaptive quality.
Animal behavior is an animal's response to stimuli, and there are both acquired and intrinsic types of animal behavior.
Dogs who have been trained to obey commands are an example of animal behavior. In contrast, inherent behavior includes mating cues like bird crowing and peacock dancing before a storm.
Animals benefit from forming relationships with dependable humans, according to animal behaviorists, although doing so requires a lot of drive and knowledge of the animal's behavior.
Anyone lacking sufficient motivation or missing the necessary knowledge could suffer considerable harm if they attempted to interact with the animal.
Thus, it is important to design field studies that will not make wild animals associate humans with food.
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Humans can over use the land which can speeds_____________ and could possibly lead to the land not being able to be used as farmland
Answer:
mathematics
life sciences