Crossing over, an important process that creates a great deal of the genetic diversity within a species, takes place during which phase of meiosis?
Select the correct response:
prophase 1
anaphase 1
prophase 2
metaphase 1

Answers

Answer 1

Answer:

efbjrebgkrekgekgr fregkbr

Explanation:

rrkf fkaewrkregrg


Related Questions

Which process is a nuclear division mechanism that halves the chromosome number and is a necessary part of gamete formation and sexual reproduction

Answers

Answer:

Meiosis

Explanation:

The answer is Meiosis

Where are the electron transport chains of cellular respiration located?
(a) in the inner membrane of the mitochondrion
(b) in the matrix of the mitochondrion
(c) in the intermembrane space of the mitochondrion
(d) in the outer membrane of the mitochondrion

Answers

I think this would be answer D. But I’m not sure

Researchers are investigating the incidence of algal blooms in neighborhood ponds. In summer, they collect water samples from over 100 neighborhood ponds in Dallas, Texas and surrounding cities. They also surveyed residents in each neighborhood to collect data such as average lot size, average home value, average resident income, and lawn care methods. The researchers found that neighborhoods with large lots, high home values, and high income levels were likely to use automatic sprinklers and synthetic fertilizers on their lawns. These same neighborhoods were very likely to have abundant algae in their ponds. Based on this research, which conclusion provides the best explanation for why algae proliferate in neighborhood ponds?

Answers

Answer:

Excessive synthetic fertilizer that washes into ponds may be the reason for which algae become so abundant.

Explanation:

Algal blooms that feed on fertilizers can deplete oxygen in water, thereby producing inhospitable ponds. In this regard, it has been shown that the runoff of fertilizers from farms (which are rich in nitrogenous matter) may cause algae to become abundant in coastal environments, depleting oxygen in the water and killing the living organisms that inhabit these areas.

Double membrane layer surrounding the nucleus

Answers

Answer:

nuclear envelope

Explanation:

By definition, the nuclear envelope is a double layered membrane that surrounds the nucleus.

Please Help!!!!!!!!!!!!!!!!!!

Answers

Answer:

I'm not quite sure but I'll try and figure it out if I don't get back to you I'm sorry but I will try.

Explanation:

Ecosystem services
Define regulating services in your own words

Define providing services in your own words

Answers

Answer:

it is a service that is responsible for enforcing laws relating to environmental health,trading standard,licensing and planning enforcement.

Providing services means to directly or indirectly own,manage,controls or be employed or engaged by,p participate in,etc

Which of the following list the thing plants needs for photosynthesis

Answers

Answer:

they need carbon dioxide,water and light

carbon dioxide, water, and light :)

In living organisms, lipids function mainly as

A) sources of stored energy and transmitters of genetic information

B) transmitters of genetic information and catalyst of chemical reactions

C) catalysts of chemical reactions and components of cellular membranes

D) sources of stored energy and components of cellular membranes
BRAINLIEST FOR CORRECT ANSWER

Answers

D) sources of stored energy and components of cellular membranes

In living organisms, lipids function mainly as sources of stored energy and components of cellular membranes, which are present in Option D, as lipids are a diverse group of molecules that perform various functions.

What are lipids?

Lipids can be broken down through a process called hydrolysis to release energy that can be used for cellular processes, and this energy storage is particularly important for organisms that need to survive for extended periods without a steady supply of nutrients, lipids also play a crucial role in forming the cellular membrane that surrounds and protects cells, such as the phospholipid bilayer, which is a key component of cellular membranes and is made up of two layers of phospholipid molecules.

Hence, in living organisms, lipids function mainly as sources of stored energy and components of cellular membranes, which are present in Option D.

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A chemical that binds to a receptor with the channel directly on it is a(n _____ ?

Answers

Should be ligand intracellular receptors, binding of a ligand to a receptor changes its shape or activity.

what propels the movement of chemicals like carbohydrate through the thin hyphal cells of the fungus

Answers

Answer:

There are no options to this question, however, it will be answered based on general understanding of fungal hyphae.

The pores/holes in the septa of the hyphae

Explanation:

Fungi are a group of living organisms that are different from plant and animals. They are made up of a thread-like filamentous structure called HYPHA that develops into a mass of vegetative structure called MYCELIUM. The hyphae of most fungi is septated i.e. divided by a septum, which is a partition that divides the hyphae in fungi.

In the septum of fungi cells are tiny pores that propels the movement of chemicals like carbohydrate through the thin hyphal cells i.e. molecules pass through these pores located in the septum from one hypha to another within the cell of a fungus.

Carbohydrates are molecules made up of carbon, hydrogen and oxygen. They are required for cellular metabolism and functions. The vegetative mode of growth is performed by the hyphal cells in the fungi.

The openings or the septa in hyphal cells force the carbohydrates into the cells.

Fungi or fungus is a group of organisms that varies from animals and plants.

The filamentous thread-like formation called hypha is the structural unit of fungi organisation.

The hyphal cells are divided by septum that divides the fungi cells.

In the septum present on the hyphal cells, many numerous pores present drives the flow of the chemical or the nutrient like carbohydrates.

Therefore, these pores present in the thin hyphal cells of the fungus allows chemical movements in the cells.

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Why does mitosis occur???

Answers

Answer: Mitosis is the process in cell division by which the nucleus of the cell divides (in a multiple phase), giving rise to two identical daughter cells. Mitosis happens in all eukaryotic cells (plants, animals, and fungi). ... Mitosis is the reason we can grow, heal wounds, and replace damaged cells.

Explanation:

Is bacteria a living thing

Answers

Answer:

Yes

Explanation:

"Bacteria (singular: bacterium) are a major group of living organisms. Most are microscopic and unicellular, with a relatively simple cell structure lacking a cell nucleus, and organelles such as mitochondria and chloroplasts.Bacteria are the most abundant of all organisms."

Answer: Yes, bacteria is a living thing

Explanation:

32
Which of the following statements best describes the patterns and trends of the Periodic
Table?
A
The atomic number and atomic mass decrease from left to right across a period;
energy levels decrease from top to bottom down a group.
B
The atomic number and atomic mass increase from left to right across a period;
energy levels decrease from top to bottom down a group.
С
Reme
The atomic number and atomic mass increase from left to right across a period;
I energy levels increase from top to bottom down a group.
D
The atomic number and atomic mass decrease from left to right across a period;
energy levels increase from top to bottom down a group.
33
Using the information in the Periodic Table, it is possible to determine that atoms of the

Answers

Answer:

D . The atomic number and atomic mass decrease from left to right across a period;

energy levels increase from top to bottom down a group.

Explanation:

On the periodic table, elements are arranged based on the periodic law. This law states that "the properties of elements are a periodic function of their atomic number".

The atomic number is the number of protons in an atom.

Atomic mass is the number of protons and neutrons in an atom

The energy level is the number of shells in an atom

As we move from left to right on the periodic table, both atomic mass and atomic number increases. Also, down a group, the energy level increases as the number period increases. From left to right, the energy level stays the same.

how do villi help to increase the absorption of digested food in to the blood stream​

Answers

Answer:

The cells of the villi and another part of the small intestine, known as the crypts, transport food from the digestive tract into the bloodstream, where they can be used by the body. The villi aid in absorption by increasing the surface area of the intestine and contain specialized cells which transport different types of nutrients into the blood.

Explanation:

Describe Genotypic Species Concept

Answers

Answer:

Genotype is the collection of genes responsible for the various genetic traits of a given organism. Genotype refers specifically to the genes, not the traits; that is, the raw information in an organism's DNA. Genotype is determined by the makeup of alleles, pairs of genes responsible for particular traits.

Plz mark me as brainliest if the answer helps u

What’s the difference in concentration of hydronium Ions between pH1 and pH4?


a) x 2.6

b) x 1000

c) x 4

d) x 10

Answers

Answer:

The difference in concentration of hydronium Ions between pH1 and pH4 is 1000 times.

The difference in concentration of hydronium Ions between pH1 and pH4 is - Option b) x 1000.

pH scale is a scale or measure to find the strength of acidity or basic nature of a solution or substance. pH 1 is acidic and pH 14 is most basic on scale.

Acids combine with water molecules to form hydronium ion, H3O+. Therefore, pH formula in aqueous solution becomes-

pH = - log [H3O+].

taking antilog on both the sides, the concentration would be calculated as

[H3O+] = antilog (- pH)

In the first case, pH given is 1. So,

=> [H3O+] = antilog (- 1)

= 0.1  

In the second case, pH given is 4. So,

=> [H3O+] = antilog (- 4)

= 0.0001  

Thus, the concentration of hydronium ion at pH 1 is around 1000 times greater than that of concentration at pH 4.

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BORN
Which of the following is not a long-term effect of mining in the Picher Mining District?
a. increased levels of lead in the bloodstream
b. increased incidents of kidney disease
C. increased levels of particulates in the air
d. increased amounts of vegetation
Please select the best answer from the choices provided
A
B

Answers

Answer:

D - Increased amounts of vegetation

Explanation:

Edge 2020

Environmental Science :)

The part of the following options that are not a long-term effect of mining in the Picher Mining District is the increased amounts of vegetation.

Picher Mining District is an area located in Ottawa, Northeast of Oklahoma. In this area, mining activities are being carried out and these activities can have long-term detrimental effects or complications to respiratory organs.

Miners are required to practices safety rules during mining activities and periodically go for check-ups to extract any harmful substances away from the body system.

Therefore, we can conclude that in an area where mining activities are being carried out, the effect of mining which is not a long-term effect is the increased amounts of vegetation.

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Rapid erosion in the desert is caused by:

hot temperatures
humid weather
loose soil
dense vegetation

Answers

Answer:

losse soil

Explanation:

I am homeschooled and this is the answer for my school

In parts of the Northern Hemisphere grasslands, the spring growing season is becoming two weeks longer than in the second half of the 20th century. The spring growing season is now coming earlier in both hemispheres. Based on the above statement and the following graph, what conclusion can be made regarding temperature?​

Answers

Answer:

Natural Earth cycles result in increased temperatures    

Explanation:

By temperature looking te the graph we can see that there is a soft increase in temperature from 1880- 1940. It seems that from 1940-1980, the temperature was stable, but since 1980 there is a noticeable temperature increase, until the year 2000. By year there are increases and decreases in temperature, which correspond to the different seasons and temperature cycles over the year, but in a general vision, the temperature is obviously increasing with the pass of years.

According to the statement, the spring growing season is becoming longer than in the second half of the 20th century, and it is coming earlier. This is reflected in the graph from the year 1980 to 2000.

According to the graph and the statement, we could estimate what is going to happen in the next years is there is no change. Although, we can not predict it for sure.  

Why do fats have higher caloric value than other organic molecules?

Answers

Fats are the slowest source of energy but the most energy-efficient form of food. Because fats are such an efficient form of energy, the body stores any excess energy as fat.

Fats have higher calorific value. Fats have high energy than other molecules.

What is high calorific value?

Calorific value, which is measured by measuring the heat generated by the full combustion of a particular quantity of a substance, is nothing more than the energy present in a fuel or food. Currently, this is typically given as joules per kilogram.

A device called a calorimeter is used to calculate calorific value. In order to determine how much heat was generated during combustion, a predetermined amount of the object being investigated is burned under carefully controlled conditions.

Therefore, Fats have higher calorific value. Fats have high energy than other molecules.

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PLEASE HELP- Soon

If an impatiens flower experiences drought, then its leaves curl up and wilt as a response to water loss and as a means to reduce evaporation (water loss from the leaves).

What is the independent variable ?

What is the dependent variable ?

Answers

IV- water
DV- plant reaction

you go out to dinner with your best friend. during dinner you consume the following meal: spinach green with sunflower seeds, a Dr. Pepper and a piece of unbuttered french bread. identify the biological molecules that would likely be present and what would they be processed into after

Answers

Answer:

The biology Molecules that will.be present in what she consumed are Carbohydrates from unbuttered bread, vitamins green spinach, Fat and oil or lipids from sunflower seeds, proteins...

The Carbohydrates is processed into glucose, proteins is processed into amino acids, lipids is processed into fatty acids and glycerol.

Explanation:

From the food consumed, The biology Molecules that will.be present in what she consumed are Carbohydrates from unbuttered bread, green spinach contains vitamins like vitamin K, vitamin A, vitamin C, vitamin B12 , minerals like magnesium, iron, Fat and oil or lipids from sunflower seeds, proteins...

The Carbohydrates is processed into glucose after enzymes like salivary amylase acts on it from the chewing and in the stomach which produces glucose which makes it easily absorbable , proteins is processed into amino acids by the activity of hydrochloric acids and protease that processed it into amino acids, lipids is processed into fatty acids and glycerol by the activities of the enzymes lipase.

The minerals and vitamins present are in a way they can be absorbed.

The molecules that will be present in the foods shown above would be sugar, carbohydrates, lipids, fiber, vitamins, calcium, phosphorus, potassium, proteins, and magnesium.

We can arrive at this answer because:

French bread will supply the body with carbohydrates. These carbohydrates will be turned into sugars, mainly glucose.The proteins present in spinach will be transformed into amino acids that will be used in the production of other proteins.The lipids present in sunflower seeds will be transformed into fatty acids, glycerol, and fat.The calcium present in spinach will be absorbed by the bones.Vitamins, phosphorus, and potassium will be broken down and dissolved in the bloodstream.Fiber will be metabolized by the intestine.

Based on this, we can say that proper nutrition is important because it promotes essential molecules for the functioning of the body.

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In AB blood, the A and the B alleles have?

Answers

Answer:

In AB blood, the A and the B alleles have?

Explanation:

They have codominance.

Which molecule brings amino acids to the ribosomes to be assembled into proteins?
A- tRNA
B- mRNA
C- peptide
D- codon

Answers

Answer:

A

Explanation:

tRNA (aka transfer RNA) brings amino acids to the ribosomes based on the instructions it receives from the mRNA (messenger RNA).

Answer: tRNA

Explanation:

On edge

Destiny equals:
1. weight/area
2. mass/volume
3. weight/volume
4. mass/weight​

Answers

Answer:

Mass/Volume

Explanation:

Formula for destiny: Mass/volume

Answer:

mass/volume

Explanation:

1 . republic
2. delegate
3. smuggling
4. indentured servant
5. dissenter
6. duty
7. liberty
8. proclamation
9. boycott
10. repeal

A. a worker who contracted with American colonists for food and shelter in return for his or her labor
B. the quality or state of being free
C. an official, formal public announcement
D. one who opposes official or commonly held views
E. a representative democracy where citizens choose their lawmakers
F. to cancel a law
G. the act of importing or exporting secretly, in violation of the law
H. to refuse to purchase certain goods or services
I. a representative to a meeting
J. a tax on an imported good
what are the answers ?

Answers

Answer:

the answer is a

Explanation:

i did that test an a is right

What is one way homeostasis benefits living organisms?


A. It maintains balance.

B. It reduces air pollution.

C. It increases food
consumption.

D. It regulates atmospheric temperature.

Answers

Answer:

it's a

Explanation:

homeostasis is in an organism so it can't be any of the others

Answer:

The answer is A

Explanation:

Homeostasis is the ability to maintain a relatively stable internal state that persists despite changes in the world outside.

what reason could exist for varying length of beans

Answers

Different soil, location can be a factor, the amount of sun, wild and domesticated can vary

Which correctly shows the order of organization when dealing with populations and ecosystems?
A. Organism-Species-Population-Community-Ecosystem-Biome
B. Organism-Species-Community-Population-Ecosystem-Biome
C. Species-Organism-Population-Community-Biome-Ecosystem
D. Organism-Population-Species-Community-Ecosystem-Biome

Answers

Answer:

hope this helps

Explanation:

Which molecules would REQUIRE a channel or transport protein to cross the cell membrane?
A) CO2
B)H2O
C)k+
D)O2

Answers

C) K ( potassium)

Explanation:
Small non-charged molecules like CO2, H2O, O2 can pass through the membrane freely.
But others such as K+ require specific potassium bumps throughout the membrane. Which acts to transport Na+ and K+ cross the membrane.
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