In which phase does crossing over occur (where the homologous pairs exchange genetic information)?
Prophase I
Prophase II
Prophase III
Answer:
Prophase l is correct If ya have Usa Test prep
The term biology comes from the Greek word bios, meaning _____, and the noun ending -logia, meaning ?
Answer:
Life and study.
Explanation:
Biology may be defined as the field of study that study about the living organism. Different fields of biology are genetics, anatomy, physiology, molecular biology and cell biology.
Biology has been derived from the Greek word bios that means life and Logy means study. The study of the living organism is known as biology. The physical, chemical and biological structure of living organism is study in field of biology.
Thus, the answer is life and study.
Analyze the given diagram of the carbon cycle
An image of carbon cycle is shown. The sun, a cloud, two trees, one towards left and the other towards right, an animal, lake, and a factory are included. Arrow A points from the sun to the left tree. Arrow B points from the air above the clouds to the left tree. Arrow C points from the factory towards the air above the clouds. Arrow D points from the air to the lake labeled Carbonates in Water. Arrow E points from the label Dead Organism under the animal to label Fossils and Fossil Fuels. Arrow F points from the right tree to the air.
Part 1: Which process does arrow C represent?
Part 2 Name a process that could release the compound into the air
Part 3: explain how the elements that form it are conserved during carbon cycle
Use complete sentences to explain your answer.
Part 1: The process which arrow C represent is the burning of fossil fuels to introduce Carbon Dioxide (CO₂) into the atmosphere. This process in the Carbon Cycle is relatively new since humans weren't able to produce large amounts of Carbon Dioxide by burning fossil fuels until the Industrial Revolution. This could also represent the process of cement manufacturing since it releases CO₂ by the following reaction:
CaCO₃ → CaO + CO₂
Part 2: A process that could release the compound into the air is the burning of fuels. This is an oxidation reaction in which the carbon present in form of Hydrocarbons in the fuel is oxidized to CO₂ by the oxygen in the atmosphere. The CO₂ produced is in the gaseous state, and is incorporated into the air. It also contributes to the greenhouse effect. The combustion reaction for the most simple hydrocarbon, methane (CH₄) is shown below:
CH₄ (g) + 2O₂(g) → CO₂(g) + 2H₂O (g)
Part 3: The elements that form it are conserved during carbon cycle by the Law of Conservation of Matter. This Law states that in chemical reactions, the matter is neither produced nor consumed, it only transforms. So, during all chemical processes in the Carbon Cycle, Carbon atoms are never destroyed but they change and rearrange into different molecules. This cycle is key to the sustaining of life on Earth.
some heterozygous alleles create variations in expression so that there is not a clear dominant or recessive allele true or false ?
Answer: False
The variations in expression depends on how genes code for proteins that would specify whether it will be dominant or recessive allele. Within a population, there may be a number of alleles for a given gene and these differences can cause variations in the protein that is produced. The change in protein expression affect traits due to the variations in protein activity or expression that produce different phenotypes.
Moreover, individuals that have copies of different alleles are known as heterozygous and individuals that have two copies of the same allele are referred to a homozygous. The expression patterns observed in inheritance will depend on whether the allele is found on an autosomal chromosome or a sex chromosome, and on whether the allele is dominant or recessive.
All of the different organisms interacting in a pond make up?
Answer:
An ecosystem
Explanation:
Ecosystem refers to the interaction of the biotic components of a community with one another and also with abiotic components i.e. physical environment. The biotic components describes organisms that possess life in them e.g animals, plants, and microbes. The abiotic components describes the lifeless physical environment e.g climate, temperature, sun, soil etc.
According to the question, organisms in a pond interacting makes up an ECOSYSTEM. The organisms could include fishes, plants, bacteria, planktons etc. Specifically, because this ecosystem occurs in water, it is referred to as an AQUATIC ecosystem.
What life cellular process produces the waste products carbon dioxide and water
PUNNETT SQUARES: QUESTION 5 Tay-Sachs disease is caused by a recessive lethal allele, meaning that individuals that are homozygous recessive (tt) will have the disease and die before they are able to have offspring. Two parents that are heterozygous (T) carriers for Tay-Sachs want to have children. What are the chances that their children will get Tay-Sachs disease?
Earthworms are a species of worms that lives in moist soil along with other organisms like tiny insects and bacteria. Earthworms obtain water and nutrients by eating dead plant material found in the soil. Earthworms also release waste materials that help enrich the soil. Based on this information, which sentence is correct?
Answer:
D. Soil is the earthworm’s habitat.
Explanation:
brainliest plz!!!!
Sponges reproduce asexually through a process called ______.
Detached earlobes are dominant. A child inherits genes with the genotype: E and E. What is the chance that they will have detached earlobes?
100% chance
75% chance
50% chance
25% chance
The thick mass of grass roots that helps hold prairie soil in place is called
Answer:
It is John Deere's Plow
Explanation:
YW
Boris is riding his bike on a path of hard sand. When he rides on a paved path, he can pedal his bike more easily. He can ride more easily on pavement because there is less
A)
drag.
B)
lift.
C)
friction.
D)
gravity.
The Calvin cycle of photosynthesis begins when
A. light becomes available.
B. electrons leave a photosystem.
C. the reduction of carbon dioxide occurs.
D. carbon dioxide is attached to RuBP.
Some steps in cell division are shown below: 1. Chromosomes condense and pair up 2. Segments of DNA of sister chromatids twist and cross 3. Exchange of DNA occurs between chromosomes 4. Haploid chromosomes condense Which of the following steps is least likely to occur during meiosis 1?
Sorry I'm late :P But if you still were interested in the answer, it's Step 4. Got it right on the test.
Steps in the cell division that occurs during meiosis 1 are :
Chromosome condense and pair upSegments of DNA sister chromatids twist and crossExchange of DNA occurs between homologue chromosomeThe process that is least likely to occur during meiosis 1 is :
Haploid chromosome condensation - because this occurs during meiosis 2.Meiosis It is a process during which exchange of genetic material between the homologue chromosome and such division yield four haploid cells.The diagrammatic representation of meiosis is shown below :To know more about meiosis :
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what is the function of an inhibitor in an enzyme substrate reaction?
a. activate the substrate
b. deactivating the product
c. activating an enzyme
d. deactivating an enzyme
Answer:
c deactivating an enzyme
An inhibitor deactivates an enzyme in an enzyme-substrate reaction by binding to the active site or an allosteric site, preventing the substrate from binding and reducing the enzyme's activity. So the correct option is d.
Explanation:The function of an inhibitor in an enzyme-substrate reaction is to interfere with the enzyme's activity. This can be achieved by different types of inhibitors through various mechanisms. An inhibitor may bind competitively to the active site of an enzyme, preventing the substrate from binding, in what is known as competitive inhibition. Alternatively, an inhibitor can bind noncompetitively to an allosteric site on the enzyme leading to a change in the enzyme's conformation and thus reducing its affinity for the substrate; this type of inhibition is called allosteric inhibition. The correct answer to the question would be (d) deactivating an enzyme, as inhibitors generally work by reducing or stopping the catalytic activity of enzymes.
Learn more about Enzyme Inhibition here:https://brainly.com/question/29562365
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Why do you think latin is used instead of a more modern language?
Scientists have changed the DNA of a type of cabbage so that it contains a tiny amount of poison from a scorpion’s tail. The poison in the cabbage kills caterpillars that try to eat it. This is an example of
A) gene therapy.
B) selective breeding.
C) genetic engineering.
D) artificial selection.
this awnser is c)genetic engineerig
Explain why Earth's temperature is directly affected by the amount of greenhouse gases in the atmosphere.
Earth's temperature depends on the balance between energy entering and leaving the planet’s system. When incoming energy from the sun is absorbed by the Earth system, Earth warms. When the sun’s energy is reflected back into space, Earth avoids warming. When absorbed energy is released back into space, Earth cools. Many factors, both natural and human, can cause changes in Earth’s energy balance, including:
Variations in the sun's energy reaching EarthChanges in the reflectivity of Earth’s atmosphere and surfaceChanges in the greenhouse effect, which affects the amount of heat retained by Earth’s atmosphereThese factors have caused Earth’s climate to change many times.
Why isostatic rebound slows down over time
Answer:
Isostatic rebound is actually a very slow adjustment process among the terrestrial elastic layers of planets like earth, which gets slower once it reaches certain equilibrium.
It's defined as a rebound due to the response after a very heavy force/load is either removed or further inflicted on the lithosphere, depresing it or displacing it, and making it rise up again somewhere else.
The pression or load/force is caused by huge ice sheets, such as when ice ages in the past, which can either melt at some point in time, or reach equilibrium, with the asthenosphere (layer below lithosphere) gathering enough strengh to carry that weight.
In both scenarios, the earth's response is slow and it may vary either due to it's axial tilt and orbit related to the Sun causing warmer periods, or to the changes in weight upon the lithosphere, just like Skandinavia which is still rising back up from the last ice age.
Explanation:
(02.04 HC)List an example of how an ecosystem can be affected by weather patterns. Explain how ocean temperatures affect weather patterns.
BEST ANSWER GETS BRANLEIST!!!!!!!!!
What type of infection is transmitted by athlete's foot?
Bacterial
Fungal
Parasitic
Viral
fungal because it is a foot fungus.
How many ways can 2 sets of chromosomes combine?
The right answer is 8,324,608.
Chromosome recombination is most often just before cell division. This phenomenon is responsible for genetic diversity and the evolution of species.
To calculate the number of recombinations between two chromosomes, the formula 2 ^ n (n being the number of chromosomes) is used.
2 ^ 23 = 8,324,608 possibilities of recombination.
True or False: Kevin selected a lightweight pan in which to deep-fat fry the doughnuts. Aidan knows this is a safe procedure.
what body system eliminates urine as a waste product from the human body?
plzzzz need help
Which of these is not an environmental effect of farming?
increased air temperatures
habitat loss
soil erosion
poisoned wildlife from pesticides
Since all living organisms use the same four nucleotides in DNA structure, what is it that makes individuals unique?
A)the incidence of the STOP codon in DNA
B)the sequence of nucleotides in the DNA
C)the location of the phosphate group on the DNA backbone
D)the number of cytosine repeats in one strand
When did the first frog appear on Earth?
Answer:
The correct answer will be around 250 million years ago.
Explanation:
Frogs are the cold-blooded animals which lives in both water and land. So, they belong to the class amphibia.
The first amphibians appeared during Devonian period around 370 million years ago when life moved on land from water but the evolution of frogs is a debated topic.
Fossil evidences have shown that they evolved around 250 million years ago during the early Triassic period from Triadobatrachus, or triple frog. The earliest known true frog was tiny Vieraella species found in the South America.
Thus, frogs appeared for the first time around 250 million years ago.
which of the following best describes protists?
A)They are a diverse group of eukaryotes that include several unrelated lineages.
B)They are a diverse group eukaryotes with a single common ancestor.
C)They are a diverse group of prokaryotes that includes several unrelated lineages.
D)They are diverse group of prokaryotes with a single common ancestor
They are a diverse group of eukaryotes that include several unrelated lineages.
What are protists?Protists are unicellular, eukaryotic, and microscopic organisms.
They have some characteristics of both plants and animals.
Examples are amoeba, euglena, plasmodium, etc.
They can be parasites.
They live in moist areas and water.
Thus, the correct option is A)They are a diverse group of eukaryotes that include many unrelated lineages.
Learn more about protists, here:
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Tina is conducting an investigation on bicycle helmet aerodynamics. She is trying to find out what kind of helmet causes the least amount of air resistance. She tested three different helmets, using the same rider each time. She recorded the time it took for the rider to complete one circuit on a track in the table below.
Helmet Time in Seconds
A 35
B 28
C 41
How could Tina get more reliable data for this experiment?
Each genus of organisms is divided into classes. Please select the best answer from the choices provided True or False
Answer:
true
Explanation: