20 points and will mark brainliest! Please explain how you got it though

20 Points And Will Mark Brainliest! Please Explain How You Got It Though

Answers

Answer 1

Answer:

crossing over during meiosis

Explanation:

i just had biology last semester hope this helps


Related Questions


Which best explains the role of plants in the nitrogen cycle?

Answers

Answer:

Assimilation

Explanation:

This is how plants get nitrogen. They absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll. ... When a plant or animal dies, decomposers like fungi and bacteria turn the nitrogen back into ammonium so it can reenter the nitrogen cycle.

Plants absorb nitrogen compounds out of soil and animals can get it.

How does evolution result in reproductive success?

Answers

Answer:

Often when species evolve, they receive a trait that may make them live longer or make it where their survival chances are significantly increased. Which in turn can make their offspring stronger and able to live longer, therefore increasing their population.

Rivers that have developed over a long period of time are found in wide valleys with flat, low-lying bottoms. These valleys were
created by the removal of rock and soil through the process of _____.
OA. deposition
B
C. erosion
•D. weathering
glaciation

Answers

Option C i thinkkkkk

If water was removed from a plant's environment what would happen to the plant's glucose production?​

Answers

Answer:

It would cease

Explanation:

If water is removed from a plant's environment, the plant's glucose product will cease. This implies that the plant will stop producing glucose.

Water is an essential ingredient for the production of glucose by plants. During the process of photosynthesis, green plants manufactures their food in the presence of sunlight. The water combines with carbon dioxide to produce glucose oxygen gas using sunlight energy. Without water, this reaction will not be possible to take place. Therefore, the production of glucose stops when there is no water.

What molecule do bacteria take in (use up)?

Oxygen
Carbon Dioxide
Water

(This is 7th grade science)

Answers

Carbon dioxide will be the answer

Molecules of DNA are composed of long chains of?

Answers

two long polynucleotide chains

A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand. Hydrogen bonds between the base portions of the nucleotides hold the two chains together

Molecules of DNA are composed of long chains of nucleotides.

What are nucleotides?

Nucleotides are the building blocks of DNA  and RNA adenine (A), thymine (T), guanosine (G), and Cytosine (C. In RNA, uracil (U) is present instead of thymine.

The pentose sugar is the ribose sugar in RNA and deoxyribose sugar in DNA. In deoxyribose sugar, oxygen is absent from the 3' carbon.

Phosphate groups are attached through the 5-C of pentose sugar by an ester bond. One polynucleotide chain is formed when the phosphate of one nucleotide forms a phosphodiester bond with the sugar of another nucleotide.

A double-stranded structure is formed by base pairing between nucleotides. The adenine binds to thymine by two hydrogen bonds and guanine binds to cytosine by three hydrogen bonds.

Therefore the molecules of DNA are composed of long chains of nucleotides.

Read more about nucleotides, here

https://brainly.com/question/13185536

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Which factor makes enzymes well-suited to the role of catalyst in a biochemical reaction?

A)Enzymes do not affect the energy of a reaction.

B)Enzymes slow down reactions so products can form.

C)Enzymes can be reused because they do not permanently bond with substrate.

D)Enzymes can only bind to other enzymes so the same product is formed each time.

Answers

Answer: C

Explanation: Once an enzyme binds to a substrate and catalyzes the reaction, the enzyme is released, unchanged, and can be used for another reaction.

Enzymes can be reused because they do not permanently bond with substrate.

What are Enzymes?

A biological catalyst called an enzyme is usually always a protein. It accelerates a certain chemical reaction in the cell. The enzyme is continuously employed during the reaction and is not destroyed. Each enzyme molecule found in a cell is unique and tailored to a particular chemical reaction.

Proteins called enzymes assist our bodies' chemical reactions move forward more quickly. For several processes, including digestion and liver function, enzymes are crucial.

Health issues might result from having too much or too little of a specific enzyme. Healthcare professionals can also use the enzymes in our blood to look for injuries and illnesses.

Therefore, Enzymes can be reused because they do not permanently bond with substrate.

To learn more about Enzyme, refer to the link:

https://brainly.com/question/14953274

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Which of the following are sources of extra nutrients that can cause algae to overgrow in water due to HUMAN activity? CAREFULLY select all options that apply. List the answers.


dissolved oxygen in water

treated waste water

viruses

combined sewage overflow (CSO)

fertilizers

cleaning products

dog poop on the streets of NYC

water running over rocks


(This is 7th grade science)

Answers

I’m not sure about the rest but I think Dog poop is one

HURRY. Why is transcription said to be unidirectional?

Answers

Answer:

Transcription is unidirectional because you are copying only ONE side of the DNA. Remember that DNA is a double stranded helical structure. One strand of DNA is complementary to the other strand.

Explanation:

Why do the cells used for reproduction only have half (½) of the DNA that other cells have?

Answers

Answer:

Because each chromosome has a pair, these cells are called "diploid" cells. On the other hand, human sperm and egg cells have only 23 chromosomes, or half the chromosomes of a diploid cell.

Explanation:

PLEASE HURRY I AM TIMED!!!
Are aliens real? Explain your answer.

Answers

Answer:

No, not according to any sciences (unless you mean aliens as in immigrants)

Explanation:

There is no way that we are the only living thing in the entire world. There has to be another species out there.  They might be wondering if there is another living thing out in space too.

How can agriculture cause soil pollution?

Answers

Agriculture pollution

Explanation:

Agriculture is a main source of pollution in lake water. chemical and fertilzer

Answer:

Pesticides and fertilizers used on crops fed to animals are a major contributor to land pollution

Explanation:

hope this helps :)

the biotic factors of each land biome are determined by its ___
climate
organisms
location
size

Answers

Climate hope this helped

Answer:

climate

Explanation:

What are gametes?

male and female reproductive organs
male and female reproductive tissues
male and female reproductive systems
male and female reproductive cells

Answers

Answer:

male and female reproductive cells

Explanation:

I hope it helps ❤❤

Answer:

the last one

Explanation:

Is energy used or not?

Answers

Answer:

Explanation:

energy is used, everything uses energy especially living organisms

Answer:

Yes energy is used, it can be used in certain ways, like when you are running or walking, guess why you are able to do those because you have energy to do that.

Explanation:

What do you call protozoa that you can see with the naked eye?

Answers

Answer:

Paramecium protozoa

Explanation:

because of their size (50-300 μ long) and the human eye can see things as small as about 100 µm and P.

HELP ASAP
Joe is experimenting to determine which liquid will cause bean plants to grow faster. He watered the plants with equal amounts of liquid and measured their height every other day. The plants are in the same pots with different soils and placed in the same location. Will Joe be able to obtain reliable data to write a supported conclusion?
Yes, because he is only observing the height of the plant.
Yes, because he is consistent with watering the plants.
No, because he used different soils.
No, because he uses only one type of plant.

Answers

Answer:

No, because he used different soils.

Explanation:

which liquid will cause bean plants to grow faster.

He watered the plants with equal amounts of liquid and measured their height every other day.

The plants are in the same pots with different soils and placed in the same location.

Ok so last statement made the experiment wrong.

As a constant variable the soil should be the same for all plants only the liquid should change

identify and explain three environmental impacts of current agricultural methods

Answers

Explanation:

It is profit making practice but it causes increased level of pathogens.

It has increased the level of chemicals in our land and water.

It has increased levels of greenhouse gases in air.

6B(SCIENCE) (6BB OOB)
4
What is the difference between evaporation and boiling? *
(1 Point)
A) There is no difference - they are exactly the same.
B) Evaporation, unlike boiling, occurs at all temperatures.
C) In evaporation, unlike in boiling, there is no state change.
D) In boiling, unlike in evaporation, the liquid volume reduces.
This question is required.​

Answers

B) Evaporation , Unlike boiling, occurs at all temperatures

If the process of meiosis shown to the right proceeds
normally, how many
chromosomes will cells A, B, C, and D have?
B

Answers

Answer:

If I’m correct it’s 15

Explanation:

Describe the process of absolute dating as it relates to igneous rock and the fossil record.

Answers

Answer:

Radiometric dating. Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks. ... When molten rock cools, forming what are called igneous rocks, radioactive atoms are trapped inside. Afterwards, they decay at a predictable rate.

Summarize in 2-3 sentences, how an RNA vaccine works to help protect you against
viruses?
I

Answers

Answer:

boost your immune system

Explanation:

Answer:

Vaccination is the process in which substances called antigens are introduced artificially into the body to stimulate the immune system, the set of cells that protects the body against infections .

which layer of the earth is made out of melted metal?

Answers

The outer core. A molten nickle- iron alloy.

9. What is the difference betwen climate and weather?

Answers

Answer:

Climate is the long-term weather, like it is usually sunny in Florida,

Weather is the weather that you see every day, such as rainy.

Explanation:

Answer:

Weather reflects short-term conditions of the atmosphere while climate is the average daily weather for an extended period of time at a certain location.

Explanation:

The incidence of cystic fibrosis, a recessive genetic disorder in the Caucasian population of United States, is 1 in every 2,500 individuals. Find the number of heterozygous carriers. (p + q = 1, p2 + 2pq + q2 = 1)

Answers

Answer:

The no. of heterozygous carriers = 0.0392

Explanation:

From the given information:

The incidence of this recessive disorder i.e. q² = 1/2500

q² = 0.0004

q = 0.02

From Hardy Weinberg's Equilibrium.

p + q = 1; &

p² + 2pq + q² = 1

p + 0.02 = 1

p = 1 - 0.02

p = 0.98

So, the numbers of heterozygous carrier 2pq is:

= 2 × 0.98 × 0.02

= 0.0392

How could one determine if two
unidentified organisms share a common
ancestor?

Answers

Answer:

Evolutionists determine that two organisms have a common ancestor is by looking at fossil evidence in different rock layers using the law of Superposition (Oldest layers are on the bottom, newest are on the top) and compare the skulls or other bones to each other in order of oldest to newest (or newest to oldest). Another way to determine this is to examine the amount of DNA a certain species shares with another species. An example of this would be that Humans share roughly 90% of our DNA with chimpanzees or the other Great Apes.

Explanation:

DNA

They can look at the DNA it's the most common one.

There are 4 pieces of evolution and they are

Fossils , Geography , Embryos / DNA , Anatomy

Fossils: Physical remains of species , Determine age, location,  environment

Deeper layers = older

Geography: Proves species share common  ancestors, depending on where

they live

DNA: BEST evidence because it’s the  MOST ACCURATE

Similarities in the early stages of  development

Similarities in DNA

More similarities = closely related

More differences = not related

Anatomy: Compare body parts of different  species to see how they evolved

3 different structures:

Homologous (same structure,  different function)

Analogous (similar structure,  different organisms)

Vestigial (body parts that no  longer serve a purpose)

All of that are in evolution

Hope it helped! ( Gave u my biology notes :D)

Helpppppppppppppppppppppppppppppppppp

Answers

Answer:

umm i dont understand your question

Explanation:

What kind of inheritance is horse color an example of?

A. Complete dominance
B. Incomplete dominance
C. Co-dominance

Answers

i think the answer would be a , because of the certain color is more popular than an another based on the the gene but i can be completely wrong , correct me if i am :)

What type of cell is more likely to replicate and replicate faster brain cell or hair cell

Answers

Answer:

hair cells is most likely to replicate faster than the brain cell

Explanation:

__________

What parts of the body make up the central nervous system

Answers

Answer:

brain and spinal cord

Explanation:

that's it

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