Following are assertion and reasoning questions. Read the two statements labelled as A and R. Pick any of the

four options given below :

a. A and R are true and R is the correct explanation of A.

b. A and R are true but R is not the correct explanation of A.

c. A is true but R is false.

d. Both A and R are false.

1. A: Cell wall is present in plants.

R: Cell wall acts like a layer of protection to the plant cells as plants don't move.

2. A: Cell membrane is semipermeable.

R: It allows only certain molecules to pass through it.

3. A: Bacteria are prokaryotes.

R: A prokaryote is a typically unicellular organism that has a nuclear membrane-enclosed nucleus.

4. A:Nucleus is called the control center of the cell.

R: It is located in the center of the cell.

5. A: Plastids are resp sible for

R: They contain chlorophyll that traps sunlight.​

Answer:

The template for New DNA strands

Answer:

D

carbon monoxide and nitrogen oxide

Answer:

d

Explanation:

Answer:

The correct answer is - 12.

Explanation:

Given:

log2 (3x − 4) = 5

Solution:

log2 (3x − 4) = 5

3x-4 = 2^5      (∵ lognx = b ⇔ x = a^b)

3x - 4 = 32

3x = 32+4

3x= 36

x= 36/3

x = 12

c

Explanation:

the answer is c I think .

..

........

Answer: 69kg

Explanation:

Let the total weight of the woman be represented by x. Based on the information given, we can derive an equation which will be:

55% of x = 38kg

55/100 × x = 38kg

0.55 × x = 38kg

0.55x = 38kg

Divide through by 0.55

x = 38kg/0.55

x = 69.09099

x = 69kg

Therefore, the woman's total weight is 69kg.

Answer:

Which of the following statements is false?

a. The instructions for making some proteins are not specified by genes.

True

b. An organism's genes determine its inherited traits.

True

The traits an organism displays are ultimately determined by the genes it inherited from its parents, in other words by its genotype.

c. Some genes code for enzymes.

False

d. An organism's inherited traits depend on proteins.

True

This is what I believe the answer to be. You may want to double-check to see if it is reasonable.

Explanation:

DinoSnack,” maybe?  With interest in dinosaurs as high as it is, how can we go wrong?

Your task is to evaluate this suggestion, allowing for both pro and con, the positive and the negative aspects of it.   Surely there will be economic and political considerations, but concentrate especially on the biological, ecological

Answer:

this is so good!

Explanation:

C and D

Hope this helps have a great day!!

The ultrasound images are produced by using the sound frequencies that reflect off body tissues and by measuring the time it takes for reflected sound waves to be detected. So the correct options are C and D.

High-frequency sound waves are used in ultrasound imaging, also known as sonography, to look within the body.

Real-time ultrasound imaging allows for the display of blood flowing via blood vessels as well as the activity of the body's interior organs.

Contrary to X-ray imaging, ultrasonic imaging does not expose patients to ionizing radiation. A transducer (probe) is positioned either on the skin or within a bodily orifice during an ultrasonic examination.

To allow the ultrasonic waves from the transducer to pass through the gel and into the body, a small coating of gel is placed on the skin.

The ultrasound picture is created as a result of the waves' reflection off the body's structures. The information required to create a picture is provided by the intensity (amplitude) of the acoustic signals and the duration of the wave's passage through the body. Therefore the correct options are C and D.

Read more about ultrasound imaging,

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Answer:

C

Explanation:

I took the test a few days ago. :)

Answer:

There are three amino acids that have basic side chains at neutral pH. These are arginine (Arg), lysine (Lys), and histidine (His). Their side chains contain nitrogen and resemble ammonia, which is a base. Their pKa's are high enough that they tend to bind protons, gaining a positive charge in the process.

Explanation:

Mark as brainliest

Answer:

B

Explanation:

El Niño conditions happen when surface water in the equatorial Pacific becomes warmer than average and east winds blow bleaker than normal.

these occur usually every 3-5 years. it is also referred to as ENSO (El Niño-Southern Oscillation)

the opposite condition is call La Niña.

Answer:

Humans use electrical and thermal energy to cook. we also can use kinetic energy for hand held flashlights that transform it into electrical energy. solar is a common energy but there

is also kinetic water based and wind.

Answer:

My personal responsibility to the environment, as cataloged in the Brundtland report, is sustainability, I mean, ensuring that future generations will be able to enjoy the same quality and quantity of resources that I can have at this time, to I plan to make efficient use of services such as drinking water and electricity, make a correct separation at the source of solid waste so that the reusable material can be used and not cause unnecessary pressure on the earth's mantle, on the other hand, make a more continuous use of reusable or biodegradable material, in order not to increase pollution by waste that usually has as its final destination, in many cases, water sources such as the oceans, as well as reduce my consumption and that of my family of meat products, and products with chlorofluorocarbon gases, thus reducing the amount of gases that are deployed to the atmosphere and could destroy it.

Explanation:

The environmental commitment is something extremely important to allow there to be a true environmental sustainability beyond an advertising attractor, for this it is required that each person identify activities in which they can reduce the generation of pollutants, either through solid waste, dumping or gases. that affect the ozone layer such as methane or chlorofluorocarbon gases, these activities can regularly be carried out from our own homes and, although they may involve additional work, they will allow future generations to enjoy an environment with a quality similar to or better than the one we have currently.

Answer: True

Explanation:

The statement that "In the beginning, man was born from creatures of a different kind; because other creatures are soon self-supporting, but man alone needs prolonged nursing" is true.

The creatures that were different from man became self supporting soon. If the present form had been the original form of man, he won't have survived.

Answer:

B. The thick, waxy coating prevents water loss.

Explanation:

This is because the thick waxy coating needle refer to structure posses by plants or mostly xerophites plants to adapt to their environment. Plants that grow in area where there is no abundance of water for use normally posses these structures which will reduce evapotranspiration and conserve water. These plants normally have extensive roots to draw water.

Answer:

The answer is below

Explanation:

1. Primary Producers: they are usually plants or organisms that consume carbon dioxide, water, and solar energy. Examples are Cactus, phytoplankton, algae, etc.

2. Primary consumers: these are usually known as herbivores as they mainly feed on plants or primary producers. Examples are butterflies, zooplankton, and grasshoppers, etc.

3. Secondary consumers: these are usually known as carnivores that feed on animals alone or omnivores that feed on animals and plants. Examples are lizards, minnows, fish, etc.

4. Tertiary consumers: these mainly feed on secondary consumers. Examples are Snake, Frog, seal, etc

5. Decomposers: these are organisms that break down the dead cells of animals and plants. Examples are fungi and bacteria.

Answer:

Explanation:

Epigenetic inheritance is deals with the

study of the chemical modification of some genes or gene that are associated with proteins of an organism. An example of epigenetic is

Methylation it can either change rapidly during the life span of an organism or can be permanent if set early in the development of the embryo.

Epigenetic modifications are heritable, and can be passed from parents to offspring through genetic inheritance or passed down through multiple generations via transgenerational epigenetic inheritance.

Answer:

C

Explanation:

This is because the favorable traits will typically be present within the surviving animals leading them to be able to survive long enough and pass down more favorable traits.

Hope this helps!

The sentence that best explains the phrase "survival of the fittest" the individuals that are the healthiest will always get more resources and survive better.

The theory of evolution was proposed by the scientist, Charles Darwin. He proposed that species can change over time, that new species come from pre-existing species, and that all species share a common ancestor.

Natural selection according to Charles Darwin was based on the fact that traits where inheritable. From his experiment, he concluded that:

Therefore, the individuals that are the healthiest will always get more resources and survive better.

Learn more about natural selection here:

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The heat absorbed by the land and oceans is swapped with the atmosphere by the means of conduction, radiation, and latent heat. By removing plants, and removing snow increase the heat absorbed by a land surface, i.e., option C and D.

Heat transfer is a mechanism of conveying energy and entropy from one location to another.

It can be done by either of the following:

Factors increase the heat absorbed by a land surface are by removing snow and by removing plants.

Thus, the correct options are C and D.

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Answer: The correct options would be C) removing plants and D) removing snow.

Hope this helps ^_^

Answer:

Ok so

Explanation:

1. DNA

2.A , G , C and T

3.The 3-dimensional double helix structure of DNA, correctly elucidated by James Watson and Francis Crick. Complementary bases are held together as a pair by hydrogen bonds.

4.Chargaff's realization that A = T and C = G, combined with some crucially important X-ray crystallography work by English researchers Rosalind Franklin and Maurice Wilkins, contributed to Watson and Crick's derivation of the three-dimensional, double-helical model for the structure of DNA.

5.Created by Rosalind Franklin using a technique called X-ray crystallography, it revealed the helical shape of the DNA molecule. Watson and Crick realized that DNA was made up of two chains of nucleotide pairs that encode the genetic information for all living things.

6. 1869

7.The double helix of DNA is, like its name implies, in the shape of a helix which is essentially a three dimensional spiral. The double comes from the fact that the helix is made of two long strands of DNA that are intertwined—sort of like a twisted ladder.

8. In DNA, the code letters are A, T, G, and C, which stand for the chemicals adenine, thymine, guanine, and cytosine, respectively. In base pairing, adenine always pairs with thymine, and guanine always pairs with cytosine.

9. A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. ... Every person has two copies of each gene, one inherited from each parent.

10. 20

11. A group of disorders that cause red blood cells to become misshapen and break down.

With sickle cell disease, an inherited group of disorders, red blood cells contort into a sickle shape. The cells die early, leaving a shortage of healthy red blood cells (sickle cell anaemia) and can block blood flow causing pain (sickle cell crisis).

12. Sickle cell anemia is caused by a mutation in the gene that tells your body to make the iron-rich compound that makes blood red and enables red blood cells to carry oxygen from your lungs throughout your body (hemoglobin).

13. The Human Genome Project was an international scientific research project with the goal of determining the base pairs that make up human DNA, and of identifying and mapping all of the genes of the human genome from both a physical and a functional standpoint.

I'm so absolutely sorry if this is long. Good lucj with ur work ;D

Answer:

The correct answer is -

USDA                   EPA                                          FDA

Fruit                    Municipal Water Supply Bottled Juice

Grain Products  Use of Pesticides                   Eggs

Meat                                                              Food Additives

Organic standards                                        Packaged Snacks

Poultry  

Vegetables

Eggs

Explanation:

USDA, FDA, and EPA are government agencies. The detailed account of these agencies are as follows:

USDA - The United States Department of Agriculture (USDA) regulates, manages, certifies, and supports various organic products and programs related to agriculture. It also regulates raw fruits and vegetables. It ensures that the agricultural products are nutritious and safe. USDA also regulates meat products, with the poultry, the egg products.

FDA - The Food and Drug Administration (FDA) is responsibility is to protect public health by ensuring safe and secure drugs, biological products, food supply, cosmetics and many more such as packaged foods, bottled water or juices.

EPA - The Environmental Protection Agency (EPA) conserves the natural environment in order to improve human health by putting mandatory limits on the usage of pesticides, drinking water and air quality.

USDA                   EPA                            FDA

Fruit            Municipal Water Supply Bottled Juice

Grain Products  Use of Pesticides             Eggs

Meat                                                    Food Additives

Organic standards                               Packaged Snacks

Poultry  

Vegetables

Eggs

Answer:

co2+water--> glucose + o2

Answer:

C

Explanation: