what is a large structure that directs the cell’s activities and contains DNA?

Answers

Answer 1

Answer:

That would be the nucleus!

Explanation:


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HELP PLEASE QUICKLY. :)
GIVE AN EXPLANATION.

Answers

Diffusion of potassium in all regions of the filter occurs during countercurrent flow because the generation of diffusion gradient between water and the blood.

Flow of potassium

In counter current, the blood in the capillaries flowing in the opposite direction to the flow of water which creates a steep diffusion gradient  which results in rapid transfer of potassium into the blood so we can conclude that diffusion occur in all regions of the filter due to countercurrent flow of both liquids.

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Identify the structure labeled X in the diagram

Polypeptide (protein) made up of amino acids

DNA make up of nucleotides

DNA made up of amino acids

Messenger RNA made up of nucleotides

Answers

Answer:

first one

Explanation:

DNA is what is in the nucleus not outside and mRNA is the bottom

Q1. Name the following:

(i) Narrow blood vessel whose walls have a single layer of cells

Answers

Answer:

i think just google it for the answer

Answer:

Artery

Explanation:

Tunica Intima

In smaller arterioles or venules, this subendothelial layer consists of a single layer of cells, but can be much thicker in larger vessels such as the aorta. The tunica intima is surrounded by a thin membrane comprised of elastic fibers running parallel to the vessel.

Is the fossil record complete for humans? Explain your answer.

Answers

answer: no
explanation: i believe the answer is no because you can never have a completely complete fossil record, due to evolution, so things are always changing. for human fossils, we have very few that we have uncovered, meaning that it is very much incomplete.

A student is observing different structures of a seed plant during a lab activity. She has identified tiny structures that
look like powder.
Which structures did the student most likely identify?
O pollen, which contains the plant embryos
O pollen, which develops into sperm cells
Oxylem, which contains the plant embryos
O xylem, which develops into sperm cells

Answers

The structures that look like powder that the student identified when studying a.

Explanation:

Angiosperms is the name given to plants with seeds, whose characteristic is to reproduce with seeds, in addition to having flowers that have pollen grains

An old home is abandoned and the lawn is no longer cut. Eventually, small shrubs overgrow, then trees take over what was once a lawn. Eventually, a forest surrounds the no longer visible home. What type of succession is this describing?

Answers

Answer:

Explanation

A climax community (Figure below) is the end result of ecological succession. The climax community is a stable balance of all organisms in an ecosystem and will remain stable unless a disaster strikes. After the disaster, succession will start all over again.

Match each term with its best definition

Answers

match magma chamber with cavity where magma resides

match divergent plat boundary with areas where tectonic plates pull apart

match  convergent plate boundary with places where tectonic plates smash together

match stoping with blocks of rocks falling in to magma

match injection with magma forced in to fractures

How is Earth’s core different from the crust?

Answers

Answer: The Earth’s core is in the center of the Earth, and the core is WAY HOTTER

Explanation:

Answer: It is about three times thicker under the continents than it is under the oceans, and the oceanic crust is made up of different materials and denser rock. The crust makes up less than 1% of Earth's volume. The Earth's core is at the true center of our planet. ... The Earth's crust and core are separated by the mantle.

Explanation: Have a blessed day!

Which of the following is true regarding tissue?
a)
An example of tissue is the digestive system, which helps break down food
particles for organisms to obtain energy and nutrients.
Ob) Tissue is a group of specialized cells that work together for a common
function and form organs.
O c) Sponges are the only animal made of tissue and made of haploid cells.
d) Tissue is a group of diploid molecules bonded together chemically.

Answers

Answer:

True: b) Tissue is a group of specialized cells that work together for a common  function and form organs.

Explanation:

Cells are the smallest units of life, they may be either unicellular or multicellular. Unicellular organs have a single cell capable of carrying out all of the functions necessary for its survival. Multicellular organisms are more complex, and require the work of multiple different cell types.

Their cells become differentiated- where they undergo certain processes to become specialized, and gain maturity. Groups of specialized cell types form tissue; these each have varying functions over time. Organs consist of two or more tissue types that are specifically organized to carry out a function.

Answer:

b) Tissue is a group of specialized cells that work together for a common

function and form organs.

Explanation:

Sponges are the simplest type of animal therefore they have a few different features than other animals. Like all animals, sponges are diploid, multicellular, heterotrophic, reproduce sexually, mobile, and don't have a cell wall. They are different in that their zygotes do not form into a blastula and they are not made of tissue.

Also, i took the quiz :)

What is the correct answer?

Answers

Answer: it has to to be the last one one cause i added all the numbers and got 1,200 but when i sutracted them i did get those numbers so it must be the last one

Explanation:

I also think the last one:)

Choose the term that best matches the description given.

Cells that engulf and destroy bacteria _____________.

Answers

[tex]\huge\color{pink}{\underline{\underline {Question}}}[/tex]

Choose the term that best matches the description given.

Cells that engulf and destroy bacteria _____.

[tex]\huge\color{pink}{\underline{\underline {Answer}}}[/tex]

Cells that engulf and destroy bacteria phagocytes.

Answer:

Cells that engulf and destroy bacteria is " Phagocytes"

What is the result of homeostasis at the cellular level? *
A The cell dies.
B The environment within the cell is stable.
C The cell no longer obtains energy
D The cell divides.

Answers

B - The environment within the cell is stable.

Homeostasis is when your body works to maintain equilibrium (balance) so within a cell, the cell would be stable

Answer:

I think its B

Explanation:

Homeostasis is the act of maintaining everything so its the same, like body temp.

What might happen in this ecosystem if the fox was removed?

Answers

Answer:

The numbers of rat will increase & fox eaters will decrease in ecosystem

If the fox was removed from the ecosystem, the number of primary consumers i.e, herbivore may increase drastically that will cause heavy loss to vegetation.

What is the importance of foxes?

Foxes being the most widely distributed canine on diverse habitats of earth. Regardless of significant member of secondary consumers, foxes are important indicators of food web stability and hospitable terrain wherever they live.

Red foxes help to hold control on rodent and rabbit populations, which causes heavy loss to vegetation if present in greater number.

Foxes also may assist in seed dispersal by eating fruits and their fur adhere seed to be carried where they navigate.

Thus, if the foxes are removed from the ecosystem, it will negatively impact the ecosystem by imbalancing the food web.

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Which of the following statements is true of both binary fission and mitosis?

a.) They both produce four daughter cells with one set of chromosomes.
b.) They both produce two daughter cells with complete DNA.
c.) They both are used primarily for asexual reproduction.
d.) They both involve the division of a single nucleus.

Answers

Answer:

i think c is the right answer

Answer: B

Explanation:

Recall what you know about nervous tissue to answer the following questions. Nervous tissue can generate and conduct ____ signals that control the body.
answer choices are:
chemical
electrical
thermal

Answers

Answer:

Nervous tissue can generate and conduct electrical signals that control the body.

Explanation:

The neuron is the specialized cell that provides function to nerve tissue. Given the structure of the neuron, this cell is capable of creating and conducting information in the form of electrical impulses or signals, by depolarizing its cell membrane and generating action potentials.

The information generated and transmitted by the neurons allows the nervous system to obtain internal and external information of the organism, as well as to control all the body functions.

    The other options are not true because nerve tissue does not generate or conduct thermal or chemical signals to perform its function.

Answer:

Part 1: electrical

Part 2: A, B, E

Explanation:

did it on edg.

What is an advantage of asexual
reproduction?
A. Creates genetic diversity.
B. Occurs quickly.
C. Produces a small number of offspring, D. Produces identical offspring.

Answer that is correct and with explanation gets brainliest!​

Answers

Answer:

B

Explanation:

he population can increase rapidly when the conditions are favourable. only one parent is needed. it is more time and energy efficient as you don't need a mate. it is faster than sexual reproduction.

At the end of the Calvin cycle, what molecules have the energy that originally came from light?

Answers

Answer:

The Calvin cycle has two parts. First carbon dioxide is ''fixed''. Then ATP and NADPH from the light reactions provide energy to combine the fixed carbons to make sugar.

Explanation:

At the end of the Calvin cycle, ATP and NADPH are the molecules have the energy that originally came from light.

Calvin cycle reactions are referred to as light independent reactions, because they can take place in the dark, provided the products of the light reactions (ATP and NADPH) are provided.

Cells do not store large amounts of ATP and NADPH, so the Calvin cycle depends on these molecules being contributed again by light reactions.

In these reactions (each one of them catalyzed by a specific enzyme), ATP and NADPH are used up, the two final products of the transformation of light energy into chemical binding energy by the chloroplast.

The Calvin cycle uses energy-rich products of light reactions (ATP and NADPH) to incorporate three CO2 molecules (one at a time) into a three-carbon sugar phosphate.

The carbon atoms fixed in the form of sugar in the Calvin cycle eventually become the carbons of all the organic molecules present in plants, animals and almost any form of life.

Therefore, we can conclude that at the end of the Calvin cycle, ATP and NADPH are the molecules have the energy that originally came from light.

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Food is moved through the esophagus into the stomach by
involuntary muscle contractions called?

Answers

Answer:

peristalsis

Explanation:

when food contracts down the esophagus

Answer:

peristalsis

Explanation:

Read the article and use the information to answer the question that follows.

Forensic DNA

How can DNA be used to help solve a crime?

Answers

Answer:

Each person’s DNA is unique.

Scientists use variable regions in DNA to create a DNA profile.

DNA samples can be taken from blood, bone, hair, or other body tissues and

products.

DNA from a crime scene can be compared to DNA from a suspect.

DNA typing can be used to solve old cases.

Explanation:

edge 2021

DNA can be used to solve a crime as the sample of the DNA of a person can be compared to the evidence that's gotten from a crime scene.

Deoxyribonucleic acid which is commonly referred to as DNA is the molecule that has all the information that's vital to build an organism.  Each person’s DNA is unique.

DNA contains the genetic information of everyone. DNA samples can be taken from blood, bone, hair, or other body tissue.

To solve a crime, DNA from a crime scene can be compared to DNA from a suspect. If the DNA collected is the same as the one that's seen at the crime scene, then it shows that the person is responsible for the crime.

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what are the most common types of organisms in the ecosystem.

Answers

Answer:

producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants.

Explanation:

Hope this helps

Which of the following words means limp or lacking in turgor?

Answers

The answer is flaccid

Outline THREE adaptations of terrestrial plants for their survival in their habitat.

Answers

Answer:

Stomata for gas exchange, water resistant waxy cuticles on leaves and specialized cells for support.

Explanation:

Plants have undergone several modifications for life on land. These include the development of several mechanisms:

a waxy, thick water-repellent cuticle- the thick cuticle provides a barrier to water loss from plant tissues in the leaf. stomata- these moderate the evaporation of water, an important commodity to land dwelling terrestrial organisms. They also regulate gas change cells to provide strength and rigidity- plant cells are specialized cells that contain lignin and cellulose, these are rigid provide good support against gravitational forces, Without them the stem would break and the cells would readily lose water

3. What does the heading
represent?

Answers

Do you have a photo of the problem? :)

what are nutrients and water absorbed by?

Answers

Answer

Your lower intestine of your body

If there's anyone who took the test, please help!
What results when there is very heavy competition between the two species?
A) interspecific competition
B) competitive exclusion
C) coexistence
D) evolution

Answers

Answer:

it's D

Explanation:

This is because heavy competition drives natural selection which increases evolution.

Why do objects eventually fall to the ground?

Answers

Answer:

Gravity?

Explanation:

Gravity is a force that causes anything with matter to fall to the ground.

Gravity.....duh......

1. A piece of pure gold (Au) has a volume of 50 cmWhat is its mass?
Density of Some Metals
Metal
Density (g/cm3)
Copper
8.96 (g/cm)
Iron
7.87 (g/cm)
Lead
11.36 (g/cm)
Magnesium
1.74 (g/cm)
Silver
10.49 (g/cm)
Zinc
7.13 (g/cm)
A. 0.38 g
B. 2.63 g
C. 69.3 g
D.950 g

Answers

Answer:

96.5g

Explanation:

Given parameters:

Volume of Au = 50cm³

Density of Au = 19.3 g/cm³

Unknown:

Mass of the  gold  = ?

Solution:

Density is the mass per unit volume of a compound.

 Density  = [tex]\frac{mass}{volume}[/tex]

 Mass  = density x volume

Insert the parameters and solve;

   Mass  = 19.3 g/cm³ x 50cm³  = 96.5g

River deltas are?
1, caused by the movement of tectonic plates.
2, areas of infertile, rock soil.
3, formed by erosion.
4, created by seafloor spreading. ​

Answers

Answer:

2

Explanation:

I think that the answer is 2 because river deltas are formed when sediments are moved somewhere else in order to make the delta. So is there are areas of infertile rock soil it could be easily moved to make a delta

Oak trees have the ability to make their own food. Their cells contain structures
that capture energy from the sun. What are these structures? *

Answers

Answer:

chloroplasts

Explanation:

It is found in cellular structures in certain plant cells. These are usually found in the leaves of plants. It is the chlorophyll in the leaves of plants that gives them their green color.

The food that is plants are able to produce own food. The plants are able to synthesize the food through the process of the photosynthesis and are synthesized in the chloroplasts.

What is the end product of the photosynthesis ?

It is the glucose that is prepared by the plants in the metabolism.

Chloroplasts are the organelles which are there  within the cells of plants and the algae that is site of the  photosynthesis  which is process through  the energy from sun is changed into the chemical energy for the growth. Chloroplasts are responsible for biosynthesis of  the active compounds as amino acids , phytohormones , nucleotides , vitamins,  lipids and secondary metabolites

A chloroplast is the organelle through the cells of plants and certain algae that is the site of photosynthesis, which is the process by which energy from the Sun is converted into chemical energy for growth.

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PLSS HELP!!

1. cellular respiration produces

A. cellulose
B. oxygen
C. ATP
D. glucose

2. to produce starch, glucose molecules bond together through

A. photosynthesis
B. cellular respiration
C. dehydration synthesis
D. nucleotides

3. by which process does yeast produce the carbon dioxide responsible for bread rising?

A. photosynthesis
B. glycolysis
C. cellular respiration
D. dehydration synthesis

4. what is a component of amino acid not contained in starch?

A. amino acids contain carbon
B. amino acids contain oxygen
C. amino acids contains hydrogen
D. amino acids contain nitrogen

5. which two processes provide the glucose and nitrogen used to form amino acids in plants?

A. photosynthesis and nitrate absorption
B. cellular respiration and the citric acid cycle
C. photosynthesis and dehydration synthesis
D. glycolysis and nitrate absorption

Answers

Answer:

1. ATP

Explanation:

Cellular respiration produces ATP. Thus, the correct option is C. To produce starch, glucose molecules bond together through dehydration synthesis. Thus, the correct option is C.The process through which yeast produces the carbon dioxide responsible for bread rising is known as glycolysis. Thus, the correct option is B. A component of amino acid that is not contained in starch is nitrogen. Thus, the correct option is D. Photosynthesis and nitrate absorption are the two processes that provide the glucose and nitrogen used to form amino acids in plants. Thus, the correct option is A.

What is Cellular respiration?

Cellular respiration may be defined as the chemical process of breakdown of food in the cell with the liberation of energy in the form of ATP.

Photosynthesis is a chemical process through which green plants most photosynthetic algae synthesize their own food in the form of glucose. While nitrate absorption is the process through which nitrogen in the soil is significantly absorbed by the root of plants in form of nitrates.

Fermentation is initiated with the process of glycolysis, but it does not involve the upcoming two stages of aerobic cellular respiration such as the Krebs cycle and oxidative phosphorylation.

Therefore, each of the above questions is well described above.

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