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Related Questions
match the definitions to the appropriate terms that describe the number of chromosomes.
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The illustration below represents____,
which is responsible for genetic diversity.
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Answer: Crossing over
Explanation: This is what a crossing over gene looks like it starts together and separates here is evidence below ⬇️
The illustration below represents the crossing over stage in meiotic cell division which is responsible for the genetic diversity in organisms. Thus, the correct option is B.
What is Crossing over?Meiosis is the type of cell division during which the chromosome number in the daughter cells become half of that present in the parent cells from which they are produced. From one parent cell four daughter cells are formed in meiosis.
Chromosomes forms the chromatids in the cell which form tetravalent with the non-sister chromatids of the homologous chromosomes. This stage is called crossing over where the genetic material present in each of the chromatids are exchanged which results into genetic diversity in a species. After the crossing over stage, the chromatids separate from each other and goes to different daughter cells.
Therefore, the correct option is B.
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Which elements atoms have 2 electrons in the first energy level and 4 electrons in the second energy level?
A. Carbon
B. Nitrogen
C. Helium
D. None of the above
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Answer:
Carbon
Explanation:
Carbon has 2 electrons in the first energy level and 4 electrons in the third energy level.
Beets add minerals to the soil. The greens are very good for the compost.
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In Mendel's experiments with pea plants, the allele for tall pea plants was dominant and the allele for short pea plants was recessive. When did Mendel see short pea plants?
A. when the plants had two dominant alleles for height
B. when the dominant allele for tall plants was not present
C. when the plants had both a dominant allele and a recessive allele
D. when the pea plants produced yellow seeds
PLS HELP!
Answers
Answer:
B
Explanation:
if the reccesive trait is what you want then you cannot have any dominant alleles present
Chen draws a diagram to show water changing from a liquid to water vapor. Complete the sentences. _______All the water molecules in the liquid are moving. ________ Some of the molecules have more .________ These molecules move enough to escape the surface of the liquid. This is called . ________ This makes the liquid become
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kinetic energy is needed by the molecules in order to escape from the surface.
All the water molecules in the liquid are moving randomly due to the presence of some energy in it. Some of the molecules have more kinetic energy due to absorption of heat energy from the surrounding environment.
Due to high kinetic energy, these molecules move enough to escape the surface of the liquid. This is called boiling point. This makes the liquid become gas so we can conclude that kinetic energy is needed by the molecules in order to escape from the surface.
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a giant tortoise traveling at 0.3 km/hr would take how many hours to complete a marathon(42km)
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140 h
Explanation:
speed =distance/ time
so rearrange the formula
time= distance/ speed
time = 42/0.3
time = 140 h
In plant cells, how are chloroplasts and mitochondria related?
A. Chloroplasts manufacture food;mitochondria break down the food and convert it to energy
B. Chloroplasts package nutrients;mitochondria deliver the nutrients to other parts of the cell
C. Chloroplasts absorb water from the surrounding tissue; mitochondria store water
D. Chloroplasts direct the functions of the cell;mitochondria deliver messages to other parts of the cell.
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Answer:
Explanation:
Answer is A
Mitochondria are the "powerhouses" of the cell, breaking down fuel molecules and capturing energy in cellular respiration. Chloroplasts are found in plants and algae. They're responsible for capturing light energy to make sugars in photosynthesis.
What questions you would like to ask your teacher to know about the role of vaccine in prevention of harmful diseases
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Answer:
Some questions that can be asked:
1) How does the vaccine work and prevent diseases?
2) Can some people become allergic or have a negative response to vaccines, and How does this work?
3) What causes some vaccines to not work 100% effectively?
4) How do people create vaccines?
I'm not sure if this is what you were asking for, hopefully, this helps.
Help with biology plzz USA test prep
Answers
Answer:
see below
Explanation:
amplification: MUTATION = a type of mutation
independent assortment: MENDELIAN = how different
genes independently separate from one another
when reproductive cells develop
nondisjunction: MUTATION = a type of chromosomal
mutation
translocation: MUTATION = another type of chromosomal
mutation
codominance: MENDELIAN = a relationship between two
genes where neither allele is recessive and both
are expressed
insertion: MUTATION = a type of mutation
radiation: MUTATION = causes mutations
virus: MUTATION = causes mutations as the virus
replicates
deletion: MUTATION = a type of mutation
law of dominance: MENDELIAN = one of Mendel's laws
of inheritance
sex linked traits: MENDELIAN = linkage is an exception
to Mendel's law of independent assortment
incomplete dominance: MENDELIAN = when none of the
factors of a gene is dominant and there is a blend,
such as a red flower crossed with a white flower
turns out pink
law of segregation: MENDELIAN = one of Mendel's laws
of inheritance
substitution: MUTATION = a type of mutation
In an ecosystem, a deer consumes grass. What percentage of energy will the deer acquire from the grass? 0. 1% 1% 10% 100%.
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In an ecosystem, the energy is transferred between the organisms participating in the food webs from producers and consumers.
The percentage of energy transferred to the deer after feeding on the grass is 10%.
The 10% law of the energy states that:
1. The food chain at each trophic level passes or transmits only 10% of the energy and 90% of the energy is lost as heat.
2. The amount of energy at each trophic level decreases, such that the producers if consuming the 100 J of energy, the deers or primary consumers at the first trophic level will have only 10% of the energy.
Thus, the deer will possess only 10% of the energy at each trophic level, following the 10% law.
The correct answer is Option C.
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What happens to the original DNA strand after transcription?
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Answer:
It changes its form
Explanation:
The DNA strand during this process is copied and "mutate" if I may use the word , the after the new copies are change to molecules that's why at the end of the day we have different blueprints
how do bacteria associated with legumes provide nitrogen to the plant in a usable form
A. they use it in a chemical reaction producing ammonia
B. they make it into air bubbles and release it
C. they dissolve it in water
D. they get it from sunlight
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I need a paragraph explaining what dna and rna is
plssshelp fast
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Answer:
DNA is the 33 chromosomes. RNA is the protein that exists in viruses... that's All what I know.
Answer:
don't cheat
Explanation:
do it yourself
Organisms use different types of adaptations to aid in their survival. Which of the following is an adaptation that would not help a lion to catch its prey?
a.
group hunting
b.
hyoid bone adapted for roaring
c.
camouflage
d.
keen eyesight
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Answer:
B. Hyoid bone adapted for roaring.
Explanation:
The process of roaring is unrelated to helping a lion catch its prey unlike the other 3 adaptions which would allow for better success rates in terms of finding and catching prey.
Answer:B
hyoid bone adapted for roaring
Explanation:
EDGE 2021
Which type of bond, denoted by the arrows, allows DNA to be readily replicated?
Need for a final will mark brainliest!
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Answer:
the answer would be hydrogen bonds as another chemical will come down the center of the double helix and break the hydrogen bonds allowing DNA synthase II to come along a replicate it.
what is most likely to result whn a mutation affects the dna sequence
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What is the name of the chemical reaction which occurs in the body to release stored energy from food?
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[tex]\huge \bf༆ Answer ༄[/tex]
Respiration is the process (chemical reaction) which takes place in the body to release stored energy from food ~
The element present in the chlorophyll pigment is
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Answer:
full ques..please.. not understanding
Answer:
magnesium atom
Explanation:
The chlorophyll molecule consists of a central magnesium atom surrounded by a nitrogen-containing structure called a porphyrin ring; attached to the ring is a long carbon–hydrogen side chain, known as a phytol chain.
PLZZZZZZ HELLPPP
Bacteria commonly change ______ to a form that can then be easily assimilated by plant
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Answer:
Bacteria commonly change nitrogen to a form that can then be easily assimilated by plant.
what is the hierarchical structural organization in a multicellular organism
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Answer:
cells, tissues, organs, and systems
Answer:
cells, tissues, organs, and systems
Explanation:
8. What was available for the family's second baby diagnosed with SMA that wasn't available for their
first?
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There's no complete cure for it. They can try therapy called Zolgensma. also called nusinersen (Spinraza) and risdiplam (E
cellular respiration how cells harvest energy
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Answer:
Cellular Respiration: a process able to extract a large amount of energy from food molecules. In eukaryotic cells oxygen is a required component. This metabolic process is the main reason that animals have elaborate gas exchange organs such as lungs, gills and other systems. The goal of these systems is, of course, to get access to oxygen and to get rid of carbon dioxide.
Explanation:
which two organelles in eukaryotic cells originated from prokaryotes?
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Throughout the course of evolution, organelles such as mitochondria and chloroplasts (a form of plastid) may have arisen from engulfed prokaryotes.
after a macrophage ingests a pathogen, what does it do to the antigens?
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Explanation:
After the macrophage ingests a pathogen, it creates an antigen on the surface of themselves, which signals the antigen to a corresponding helper T cell
Use the molecular structures to predict which of the six solutions will test positive for glucose. Write your prediction in the answer space. Provide the reasoning behind your prediction.
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The monosaccharides; glucose, fructose and galactose all test positive to Fehlings solution.
Fehlings solution is used as a test for reducing sugars. All reducing sugars that contain aldehydes or ketones all test positive to the Fehlings solution. A positive test is indicated by the formation of a brick - red precipitate on boiling.
The monosaccharides, glucose, fructose and galactose all test positive to Fehlings solution owing to the presence of the C=O group in each compound.
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A student is investigating the process of osmosis. She fills a medicine dropper with red
blood cells. Next, she creates a saline solution that is isotonic to the red blood cells.What will most likely happen to the red blood cells after they are placed in the
solution?
A. Water will exit the cells and cause them to shrink in size.
B. Water will enter the cells and cause them to grow in size.
C. Water will neither enter or exit the cells and their sizes will remain the same.
D. Water will enter and exit the cells at a steady rate and their sizes will remain
the same.
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Answer: D. Water will enter and exit the cells at a steady rate and their sizes will remain the same.
Explanation:
Osmosis occurs when the salt content is NOT the same as our red blood cells: the salt or lack of it causes our RBCs to swell or shrink. Isotonic fluid has the same salt content as our RBCs. This is why it's important to watch salt intake in congestive heart failure.
En la maduración del cerebro que inicia desde la nuca hasta la frente la última área que madura es la corteza prefrontal que ayuda a calibrar riesgos, se ocupa del control de impulsos, el juicio y toma de decisiones.
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Answer:123456Which statement best explains the main conflict and resolution in "How a Cat Played Robinson Crusoe"?
The cat is abandoned on an island. She adapts to the wilderness and survives until her family returns.
The family worries about the cat. They are overjoyed to discover that the cat is alive when they return.
The cat faces many adversaries, including rats and owls. However, she persists and is able to overcome each.
The cat learns how to hunt. She does not starve to death on the island.
Explanation:
A small group of worms belonging to the phylum ___________ are sometimes referred to as the missing link between Chordates and Echinoderms as they share some basic developmental characteristics of both.
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Answer: the answer is Hemichordates
Which spheres include the water cycle? (Select all that apply.)
hydrosphere
geosphere
biosphere
atmosphere
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All of them include the water cycle