A student was observing slides of cell division. In one of the slides, he noticed loosely coiled chromatin depicting DNA duplication. Which phase of the cell cycle could it be?
A.
S phase
B.
Metaphase
C.
M phase
Answer:
A. S phase
Explanation:
The cell cycle involves all the series of division events that occurs to an organism. Cell division, which can be meiosis or mitosis, involves two main stages viz: Interphase and M phase.
Interphase describes the resting stage of the cell i.e. when the cell is not dividing. The cell uses this time to prepare itself for the next round of division. Interphase stage further consists of three main phases viz: G1, S and G2 phases.
In the S phase or synthesis phase of Interphase, the cell duplicates its genetic material (DNA). Hence, an onion cell observed by a student to have loosely coiled chromatin depicting DNA duplication is in the S-PHASE.
What is an ecosystem and what does it consist of?
Answer:
An ecosystem is a large community of living organisms (plants, animals and microbes) in a particular area. The living and physical components are linked together through nutrient cycles and energy flows. Ecosystems are of any size, but usually they are in particular place. An ecosystem consists of the biological community that occurs in some local, and the physical and chemical factors that make up its abiotic(non-living) environment. There are many examples of ecosystems -- a pond, a forest, an estuary, a grassland.
Explanation:
Hope something in there helps:)
If two parents have brown eyes and their baby has blue eyes, what are the genotypes of the parents and what are the possible allele combinations for each of the genes: HERC2 - OCA2
Answer:
Bb, bb
Explanation:
The kid has the resesive ( idk how to spell it sorry) traits of the parents, so, both parents have to have resesive traits.
Have a great day
Describe/draw/label in detail the process of Transcription & Translation. Make
sure to identify all key items and their roles.
Answer:
Through the Transcription & Translation, protein is synthesized
Explanation:
In the process of transcription, DNA is copied to mRNA. It is the mRNA that carries information about the protein synthesis. It has two steps – a) Formation of pre messenger RNA with the help of RNA polymerase enzymes and b) Edition of pre messenger RNA to produce desired RNA known as splicing.
In translation, mRNA is transported out of nucleus to the ribosome for the synthesis of proteins. tRNA is required for transportation.
Let the genomic sequence to be transcribed by –
3’ – TAA CGC CGT TCG TCA – 5’
The transcribed mRNA sequence would be
5’ – AUU GCG GCA AGC AGU – 3’
The translated genomic sequence is
Ile Ala Ala Ser Ser
The series that occurs after a disturbance in an existing ecosystem is called ______________
A. Primary succession.
B. Secondary succession.
C. Disturbance succession.
D. Pioneer succession.
Answer:
B.
Explanation:
Secondary succession is the correct answer.
Answer:
B.) Secondary succession
Explanation:
Can you guys answer this question please and explain why, ASAP, thanks will mark brainliest
Answer:
An increase in the number of snakes
Explanation:
From the food web, the only way for frog population to increase is:
1) increase of cricket population. (increased food source)
2)decrease of hawks population (less predator)
An increase in snake population will result in mice population to fall as more snakes will hunt and feed on the mice. This causes lesser mice to feed on grasses. Resulting in increased food for crickets. As time passes, due to sufficient food, cricket population will increase which in turn increases the amount of food available for frogs to eat.
Assuming the number of predators remain constant and amount of crickets (food) increases, more frogs will survive to maturity and reproduce, causing the amount of frogs to increase.
Answer:
<1> an increase in number of snakes
Taking into account that a ecosystem is a food chain and animals increase and decrease depending on what they eat off of other living things. The increase in the number of frogs will occur, this is due to the diagram that is included and helps support answer 1.
5. The occurrence of large or small beak sizes among seed crackers in the absence of
medium sized beaks is an example of
I
a. directional selection.
b. stabilizing selection.
c disruptive selection.
d. none of the above.
Answer:
Disruptive selection
Explanation:
Disruptive selection favors both of the extremes ( large and small beaks) Thank me later:)
The occurrence of the large or small beak sizes among the seed crackers is the illustration of disruptive selection.
What is disruptive selection?It is the kind of natural selection, which is bimodal and favors both the extremes traits within a population. It is a kind of natural selection, which opts against the average individual within a population. This kind of selection would show the phenotypes demonstrating both the extremes, however, exhibit very less individuals in the middle.
A classic example of disruptive selection is the size of the beak of the finches on the Galapagos Islands. As the majority of the seeds found these islands were either small or large, therefore, finches with small and large beaks were favored on those islands.
Thus, the correct answer is option c, that is, disruptive selection.
Find out more information about disruptive selection here:
https://brainly.com/question/1336933
How does the ozone layer affect life on Earth? (Site 1)
by its refraction
Explanation:
ozone layer affect life on earth by its upcoming refraction to the living life of earth
Answer:
ozone layer affect life on earth by its upcoming refraction to the living life of earth
Explanation:
Edge
What condition is required for fermentation to occur? A. When oxygen levels within a cell are too low for aerobic respiration B. When the energy production cycle ends of the Krebs cycle C. When a glucose molecule needs to break down completely D. When 20 molecules of ATP are needed\
Answer:
A. When oxygen levels within a cell are too low for aerobic respiration
Explanation:
Fermentation is a chemical or metabolic process that occurs in organism, when a carbohydrate such as glucose is metabolized or converted to an alcohol anaerobically (absence of oxygen).
When an organism lacks oxygen within the cell, aerobic respiration would be halted, hence pyruvate produced from glucose further undergoes fermentation anaerobically.
Organisms like lactic acid bacteria and yeast carry out fermentation. The process of fermentation is widely used in food industries, such as in brewing of wine or manufacture of yogurt.
state two outcomes of ecological succession
Answer:
There are two main types of succession, primary and secondary. Primary succession is the series of community changes which occur on an entirely new habitat which has never been colonized before. For example, a newly quarried rock face or sand dunes.
Explanation:
hope this helps
Yoghurt contains living bacteria. Bacteria are also capable of anaerobic respiration. If a sealed carton of yoghurt is left for a long time, the lid bulges upwards. Why does this happen?
Which statement best describes the relationship of photosynthesis and energy?
The process of photosynthesis is energy-storing because the process converts light energy into chemical ene
stored in the bonds of glucose.
The process of photosynthesis is energy-releasing because the process converts light energy into free energy
used for cell functions.
The process of photosynthesis is energy-conserving because no energy is used throughout the process of for
glucose and oxygen molecules.
The process of photosynthesis is energy-wasting because photosynthesis is an inefficient process that deplet
energy stored in the bonds of glucose.
Answer:
The process of photosynthesis is energy-releasing because the process converts light energy into free energy
used for cell functions.
What are 3 potential solutions to stop heat waves? (what solutions are cities looking at) IN DETAIL
Answer:
Increase shade around your home
Install green roofs.
Install cool roofs.
Which statement accurately describe animals? Check all that apply
Answer:
the 2, 3, and 5.
A severe drought has dried up a river and caused the land to crack. The drought will most likely affect...
A: plants but not animals
B: plant and animals
C: neither plants nor animals
D: animals but not plants
Answer:
Plants and animals
Explanation: animals wont be able to get water to drink and plants wont be able to absorb water into their roots to grow
“A mound of coal sitting in a field ____."
Answer:is storing potential energy
Explanation:
help urgent
Which environment was this prey found in? meadow evergreen forest marsh woodland
Answer:
This prey would be found in woodland.
Answer:
D. Woodland
Explanation:
:(:
What step in the water cycle moves water from ponds and lakes into the air Afreezing B condensation cevaporation dmelting
Answer:
Water from ponds and lakes is moved into the air during evaporation. During the process of evaporation, water changes from a liquid (water) to a gas (water vapor).
Explanation:
that is the correct answer
The height above the ground. *
Answer is
Altitude.
.........
Phenotype is the physical representation of a genotype. TRUE OR FALSE?
Answer:
true
Explanation:
i guessed i don't actually know what the answer is but hey its a 50/50 chance so go for a guess
What is used to show alleles (different forms of genes) in a genetic diagram
Explanation:
pls ☺️☺️☺️
Why does antibiotic resistance occur so quickly
Answer:
When any pathogen enters our body , our immune system in response to pathogen releases antibodies. But if it fails , antibiotics are given.. Thus the resistance to antibiotic comes and so quickly
Answer:
Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections.
How is water introduceed into rivers and streams
Answer:
As the water flows down, it may pick up more water from other small streams, springs or or from rain or snow melt. ... Small rivers and streams may join together to become larger rivers. Eventually all this water from rivers and streams will run into the ocean or an inland body of water like a lake.Water can be introduced into rivers and streams through surface runoff, springs, groundwater discharge, melting ice and snow, and precipitation. ... The water at the source of the river has high oxygen content, but the width and depth are typically less than they are in the middle sections. The most simplistic answer is that all the water in a river comes from the sky—and that is certainly true, as streamflow is one part of the water cycle. It is also true that most of the water flowing in rivers comes from precipitation runoff from the surrounding landscape (watershed).
Imagine that a clam accumulates one unit of mercury in its body from the water it lives in. How many units of mercury would a stingray accumulate if it eats 50 clams a day for 10 years, assuming no mercury is lost between the clams and stingray?
Answer:
182,500 units.
Explanation:
The answer would be 182,500 units of mercury.
Assuming there is an average of 365 days in a years, 10 years is therefore equal to:
10 x 365 = 3650 days.
The stingray eats 50 clams per day. Hence, the total number of clams that would have been eaten in 10 years equals:
3650 x 50 = 182,500 clams
Each clam accumulated 1 unit of mercury in its body from the water it lives in and there is no loss of mercury between the clam and the stingray. Hence, the total number of units of mercury the stingray would have accumulated in 10 years equals:
182,500 clams x 1 unit = 182,500 units of mercury.
A boundary between nonsedimentary and sedimentary rocks is an example of which type of unconformity?
Answer:
Disconformity
Explanation:
Disconformity is the breaking end between non sedimentary and sedimentary rocks. It is when parallel layers between sedimentary rocks have no contacts with each other which indicate period of erosion or non disposition.
Answer:
nonconformity
Explanation:
Two heterozygous purple-stemmed plants are grown. Each parent has the genotype ANL/anl. Pollen from one of the plants is used to pollinate the other, and the resulting seeds are harvested. What traits would you expect in the plants grown from these seeds? A. All of the offspring plants will have purple stems. B. All of the offspring plants will have green stems. C. About half of the offspring plants will have purple stems, and half will have green stems. D. Most of the offspring plants will have purple stems, but some will have green stems.
Answer:
D. Most of the offspring plants will have purple stems, but some will have green stems.
Explanation:
These plants are heterozygous, which means that they have two different alleles of the same gene. One allele, the ANL one, is going to dominate over the other resulting in purple-stemmed plants, which is the color that ANL encodes for.
If we draw a Punnet Square, we can see that the majority of the offsprings will have purple stems, but some of them, the ones that have two recessive alleles, will have green stems.
ANL ANL: purple stemsANl anl: purple stemsanl ANL: purple stemsanl anl: green stems║ ANL ║ anl
ANL║ANL ANL ║ ANL anl
anl ║anl ANL ║anl anl
Where are the proteins for a cell made?
mitochondria
cytoplasm
nucleus
ribosomes
Answer:
The proteins for a cell are made of ribosomes.
Answer:
the answer is Ribosomes
Match each term to the correct definition.
asymmetry
an animal without a backbone
bilateral symmetry
an animal with a backbone
radial symmetry
a body plan made of two equal halves that
mirror each other
OOOO
vertebrate
a body plan that lacks symmetry
invertebrate
a body plan that is organized around a
central point
Hii!! (: The correct answers are:
Asymmetry- A body plan that lacks symmetry
Bilateral Symmetry- a body plan made of two equal halves that mirror each other
Radial Symmetry- a body plan that is organized around a central point
Vertebrate- an animal with a backbone
Invertebrate- an animal without a backbone
A bodily layout with no symmetry is called asymmetries. A body plan with bilateral symmetry has two equal halves that are mirror images of one another.
What is Symmetry?A body plan that is structured around a central point is known as radial symmetry. Vertebrate: a backboned animal. An animal without a backbone is an invertebrate.
In biology, symmetry is the ordered repetition of parts in an animal or plant. In more detail, symmetry refers to a correspondence of bodily components on opposing sides of a dividing line or spread around a central point or axis that match in size, shape, and relative location.
With the exception of radial symmetry, exterior form and interior anatomy are rarely related because the same sort of symmetry can exist in animals with quite distinct anatomical structures.
Therefore, A bodily layout with no symmetry is called asymmetries. A body plan with bilateral symmetry has two equal halves that are mirror images of one another.
To learn more about Bilateral symmetry, refer to the link:
https://brainly.com/question/15970176
#SPJ7
Several uses of Fungi are...
A) They are used in making bread and cheese
B) They are used in making some medicines
C) They reproduce by spores
D) They are the decomposers in many ecosystems
Answer:
They are used in making bread and cheese, They are used in making some medicines, They are the decomposers in many ecosystems.
Explanation:
Which symbol(s) represent SI units for temperature? Check all that apply.
g
K
°F
L
m
Answer:
K
Explanation:
There are only three ways to represent temperature. Kelvin, Fahrenheit, and Celcius. However, the SI unit for temperature is K, or Kelvin.