Biology High School

I need the answer it's very hard todo​

I Need The Answer It's Very Hard Todo

Answers

Answer 1

Answer:

a

Explanation:

Answer 2
Answer: A



Explanation:

Related Questions

7. Which of the following systems is NOT found in a flatworm:
a. Digestive system
b. Respiratory system
c. Nervous system
d. All of the above

Answers

Answer:

No. B

8 think so

I hope it helps ✌️

Explanation:

Parasitic flatworm do not have a digestive system because they don't digest there food. They just suck it when the upper gut muscles contract, suck it inside their body then gobble them up and then they're done sucking the nutrients from the food people eat.

Answer:

A. Digestive system

A biologist wants to measure the effect of gene flow between populations. Which of the following investigations will allow her to accomplish this goal?
A)An investigation that determines a change in allelic frequency of a wolf population by theimmigration of a wolf from another population.
B)An investigation that determines the amount of time it takes for genes from a bee to transfer to the flower it fertilizes.
C)An investigation that determines the causes of mutations in genes that one species of guinea pig transfer to another species of guinea pig.
D)An investigation that determines the rate at which an antibiotic prevents a virus from transferring genes to a cat.

Answers

Answer:

B

Explanation:

Cause I say so

The investigation that will allow a biologist to measure the effect of gene flow between populations is that a change in allelic frequency of a wolf population by the immigration of a wolf from another population. Thus, the correct option for this question is A.

What is Population?

A population may be defined as a group of individuals belonging to the same species living in the same area at a given time. The size, density, abundance, birth rate, death rate, dispersal, etc. are categorized as the characteristics of a population. These characteristics are known as demographic factors.

According to the context of this question, the process of gene flow can be determined by collating allele frequencies of populations. With this mechanism, if the two populations have increased variation in their gene pool, it expresses a lesser amount of gene flow because gene flow increases homogeneity among different populations.

Therefore, the correct option for this question is A.

To learn more about Gene flow, refer to the link:

https://brainly.com/question/3498897

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An image of an influenza virus is shown. The spike-like structures that cover the virus are surface proteins.
What is the function of the surface proteins on the influenza virus?

Answers

Answer:

D. to remove a host cell's DNA

Explanation:

I hope that this helped you :D

Answer:

I got it right... this is a first choice D) to remove a host cell's DNA

Explanation:

thank you!

give me a mark for brainly

Which of the following improves your range of motion and helps prevent
injuries?
A. A healthy body composition.
B. Strong flexibility,
C. Strong cardio-respiratory endurance.
D. A good sense of balance.
SUBMIT

Answers

Answer:

B. strong flexibility

Explanation:

Being flexible allows your body to move in a fuller range of motion and can help prevent injury because you aren't putting as much strain on yourself.

Substance A's molecules are small. Substance B's molecules, which react with substance A to produce a blue-black color, are larger in comparison. If a solution of substance A is placed inside a selectively permeable bag, and the bag is placed in a solution of substance B, what will happen?

Answers

Here's link to the answer:

tinyurl.com/wpazsebu

When A reacts with B, it turns blue-black because the substance A is starch and its molecules are small, which is glucose. The substance B is iodine, which combines with starch to become blue black. If A is present in B, then the A will become blue black.

What is the reaction between the starch and the iodine?

Starch is a polymer that is made up of glucose monomer and is found in plant-based food products. This starch can react with iodine and produce a blue-black coloration, so when the substance A is placed in the substance B with a selectively permeable membrane, the substance B (iodine) can easily enter the starch and form the blue-black coloration. This is known as the starch-iodine reaction, and it results in a blue-black polysaccharide.

Hence, if a solution of substance A is placed inside a selectively permeable bag and the bag is placed in a solution of substance B, then the substance A (starch) will turn blue-black.

Learn more about the starch and iodine reaction here.

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At the end of the mitotic cell cycle, a cell divides into two cells. What must happen before the cell divides? A. The number of organelles doubles. B. Chromosomes must be copied. C. Four nuclei must be formed. D. The membrane thickens.

Answers

Answer: The correct option is B.

B. Chromosomes must be copied

Explanation:

This is because, before mitosis occurs the cells must first duplicate or replicate it's DNA during interphase and this is because mitosis is a type of cell division where a parent cell divide into two daughter cells which are genetically identical to the parent cell and carry the exact number of chromosomes of the parent cell.

Answer:b

Explanation:

1.
DNA has the limited ability to repair itself when damage
occurs. What might happen to cause damage to the DNA in a
cell?

Answers

DNA Damage: Causes and Effects
The most significant consequence of oxidative stress in the body is thought to be damage to DNA. DNA may be modified in a variety of ways, which can ultimately lead to mutations and genomic instability. This could result in the development of a variety of cancers including colon, breast, and prostate. Here we discuss the various types of damage to DNA, including oxidative damage, hydrolytic damage, DNA strand breaks, and others.

Do mutations in body cells contribute to genetic variation?(1 point)

A) No, the causes of body cell mutations are outside the body and cannot alter DNA.

B) Yes, the mutations can be passed on to offspring and contribute to variation in the population.

C) Yes, these body cell mutations lead to mutations in the gametes.

D) No, the mutations cannot be passed to offspring and only affect the individual.

Answers

A mutation is the alteration of the genetic sequence of an organism, which can either be inherited or cannot be inherited. The mutation when transmitted to the offspring leads to genetic variation.

The correct answer is:

Option B. Yes, the mutations can be passed on to offspring and contribute to variation in the population.

Mutation is the change in the genetic sequence of the organism, which can be caused due to environmental factors and can be inherited.

The mutations can lead to genetic disorders, chromosomal disorders, or any other conditions. The mutations like a disease or adaptation that can be passed onto the offspring can result in genetic variation.

The mutation leads to genetic diversity, as the mutation is also the first step towards evolution. The organisms better suited to the environment will survive more and adapt more. These changes in the organisms will be inherited by the offspring leading to genetic variation.

Therefore Option B is correct.

To know more about mutation, refer to the following link:

https://brainly.com/question/4222118

What are three ways used to describe organisms such as humans

Answers

Answer:

heterotrophs, tertiary consumers and top carnivoresExplanation:i toke the test

Fruit can be preserved to some extent by keeping in a dark, cool place. Suggest why this technique might work.

Answers

Answer:

because the cold is like a fridge and the dark preserves the fruit

Answer:

it may prevent access to animals because not only insect and bacteria like fruit


The presence of which magnetic feature best explains why a magnet can act at a distance on other magnets or on objects containing certain metals?
O fields
O dipoles
O domains
O forces

Answers

Answer:

Option: A) fields

Explanation:

Answer: A) Fields

Explanation:

I just took the test.

Review Paragraph 5. What factor would not affect the island lizard gene pool once they
reached the mainland?

Answers

Here's link to the answer:

tinyurl.com/wpazsebu

_______ is a method of reproduction for some type of bacteria?

Answers

Answer:

theres a few answers for this

mitosis or asexual both work

Explanation:

Answer:

binary fission

Explanation:

Bacteria reproduce through a process called binary fission. During binary fission, the chromosome copies itself, forming two genetically identical copies. Then, the cell enlarges and divides into two new daughter cells.

About 3% of Earth’s water is fresh water. About 1% of this amount is usable fresh water.

Which statement describes the distribution of usable fresh water on Earth?

Most of the usable fresh water is in lakes.

Most of the usable fresh water is in rivers.

Most of the usable fresh water is in the wetlands.

Most of the usable fresh water is in the atmosphere.

Answers

I believe it’s the second one sorry if am wrong

Answer:

most of the usual fresh water is in lakes

Explanation: just did the assignment

Where do the nutrients go that decomposers recycle from dead plant and animal
matter?

Answers

Decomposes recycle dead plants and animals into chemical nutrients like the carbon and nitrogen that are released back into the soil, water and air.

The least specific level of classification is:
A.Phylum
B.Domain
C.Order
D.Genus

Answers

Answer:

species

Explanation:

use this acronym king pharaoh can order for general scientists. king for kingdom, pharaoh for phylum,can for class,order for order, general for genus and scientists for species

Answer: the answer is c

Explanation: C. Provide a root to the phylogenetic tree by choosing a noncontroversial out group. D. ... B. domain, kingdom, class, phylum, order, family, genus, species. C. i hope this helps i learnd this way in class

Crossing a red-flowered four o’clock with a white-flowered four o’clock will produce pink-flowered offspring. This is called
1) incomplete dominance
2) codominance
3) F2
4) recessive

Answers

disks oak icoeoco isidro

Answer:

incomplete dominance

Explanation:

How does the carnivorous plant catch its victums?

Answers

Pitfall traps (pitcher plants) trap prey in a rolled leaf that contains a pool of digestive enzymes or bacteria. Flypaper traps use a sticky mucilage. Snap traps utilise rapid leaf movements. Bladder traps suck in prey with a bladder that generates an internal vacuum.

Answer:

They use special traps that are connected to them.

Explanation:

For example, the Venus Flytrap uses it's "mouth" to close on the fly. A sundew plant uses sticky spines to stuck to the bugs and slowly curls up and digests the bug.

What is so important about Earth's placement in the solar system?

A) It is exactly 93 million miles away, which is the magic zone for every star in the
universe
B) It's in the habitable zone - not too close and not too far from the sun
C) It's the third planet, and only #3 is considered "just right around any given star

Answers

Hi! Your answer should be B, the placement of Earth is just right in the third spot. If we were any closer the sun would burn us, if we were any farther then we could freeze, hope this helps!

What is the name of a group of connected and related organisms?
A. Flow
B. System
C. Energy
D. Matter

Answers

The Answer is D. Matter

Answer:

system

Explanation:

When wax is heated, it turns into a liquid. How are the wax molecules affected by this change of state?

Answers

answer:

the molecules gain more energy and the space between the molecules increases

explanation:

when wax is heated, the molecules of wax gains kinetic energy and move about randomly until the inter molecular forces binding them together is broken and the wax turn into liquidIn the liquid state, the molecules have more free movement, so they spread out and the distances between them increasecredits: https://brainly.com/question/2755409

the substance present in the cell wall is protein true or falseboth animal and plant cells have cell membrane true or False​

Answers

Answer:

true and true

Explanation:

fill the vocab
biology

Answers

1. interact
2. Non-living
3. Living
4. Reproduce
5. Community
6. Species
7. Biosphere
8. Ecosystem
9. Biodiversity

1. interact

2. nonliving

3. living

4. reproduce

5. population

6. biosphere

7. species

8. ecosystem

9. biosphere

10. biodiversity

What does the Greek Root "pro" mean?

Answers

Answer:

The prefix pro- primarily means “forward” but can also mean “for.” Some words that the prefix pro- gave rise to are promise, pro, and promote. When you, for instance, make progress, you are stepping “forward,” whereas if you give the pros in an argument, you are speaking “for” something by stating its advantages.

Explanation:

Each of your cells has a set of chromosomes, including
autosomes and sex chromosomes. Explain the main
differences between these two types of chromosomes.

Answers

Answer:

in the 46 chromosomes in our body, the autosomes are the first 22 homologous pairs of chromosomes that do not influence the sex of an individual, while sex chromosomes are the 23rd pair of chromosomes that determine the sex of an individual

hope this helps, good luck! : )

What is the function
of the Slavery glands
.what is the function of the slavery glands ​

Answers

Answer:

To produce saliva which breaks down food

Hi guys! Enjoy some points on this sunny Monday!

Answers

Answer:

thnx!

Explanation:

Answer:

thank youuuuuu

Explanation:

what kind of flower is this?

Answers

Answer: could be Trifolium repens Aka the white clover

Explanation:

The leaves of plants have many specialized structures. Which statement explains the importance of the stomata and guard cells for the plant?
o They protect the plant from pests
o They are involved in plant reproduction
They work together to regulate water loss and gas exchange.
o They regulate the amount of water that enters the plant for cellular respiration

Answers

Answer:

They work together to regulate water loss and gas exchange.

They work together to regulate the loss of water and exchange of gases.

Stomata and guard cells

The tiny pores or openings in plant tissue, which allow for the exchange of gases are known as stomata.

The unique cells, which surround stomata and work to close and open the stomatal pores are known as guard cells.

Both these helps a plant to take in carbon dioxide at the time of photosynthesis and also assist in reducing the loss of water by getting closed when conditions are dry and hot.

Thus, stomata and guard cells work together to regulate the loss of water and gas exchange.

Find out more information about stomata and guard cells here:

https://brainly.com/question/7602098

how Greenhouse gases in the atmosphere impact Earth’s global climate

Answers

Answer:

They impact it by heating up the atmosphere by trapping heat

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