How is the HIV infection different from a cold virus

A. HIV replicates itself inside cells
B. HIV diffuses across membranes
C. HIV attacks lymphocytes directly
D. HIV is killed by lipases

Answer:

Chromosomes are the carriers of genetic information. Heredity, in terms of genomics, means the transfer of genetic data/information from parents to offspring.

Explanation:

Answer:

A branch is a secondary wood limb growing from the trunk of a plant. It helps transport materials from the tree trunk to the leaves. The trunk is a massive primary stem of a tree located between the roots and upper tree canopy.

Explanation:

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Answer:

A branch is a secondary wood limb growing from the trunk of a plant

Explanation:

It helps transport materials from the tree trunk to the leaves. The trunk is a massive primary stem of a tree located between the roots and upper tree canopy.

Answer:

Active transport moves molecules and ions from lower concentration to higher concentration, passive transport moves molecules and ions from a higher concentration to lower concentration without any energy.

Explanation:

Active transport moves molecules and ions from lower concentration to higher concentration with the help of energy in the form of ATP. On the other hand, passive transport moves molecules and ions from a higher concentration to lower concentration without any energy.

Answer: Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females. ... These four daughter cells only have half the number of chromosomes? of the parent cell – they are haploid.

Explanation: have a good day :)

Answer:

C. All living things

Explanation:

DNA triplets that code for amino acids are called codons, they specify which amino acid will be added next during protein synthesis.

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The DNA triplets that code for amino acids are common to all living things. The option (C) is correct.

Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. Although hundreds of amino acids exist in nature, by far the most important are the alpha-amino acids, which comprise proteins. Only 22 alpha amino acids appear in the genetic code.

Moreover, amino acids are molecules that combine to form proteins. Amino acids and proteins are the building blocks of life. When proteins are digested or broken down, amino acids are left. The human body uses amino acids to make proteins to help the body: Break down food.

Hence, the term amino acid is short for α-amino [alpha-amino] carboxylic acid. Each molecule contains a central carbon (C) atom, called the α-carbon, to which both an amino and a carboxyl group are attached. The remaining two bonds of the α-carbon atom are generally satisfied by a hydrogen (H) atom and the R group.

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Answer:

99%

Explanation:

Answer:

99%

Explanation:

Answer:

1. Create a key showing traits

2. Make a list of possible allele combinations. & the phenotypes that each would have.

3. Identify the parents that are being used

4. Draw a Punnett square to determine the genotypes and phenotypes.

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Explanation:

Answer:

i thinnk its d

Explanation:

The main reason for regulation of gene expression in eukaryotes is cell repair and replacement.

Gene regulation is the process used to control the timing, location and amount in which genes are expressed. The process can be complicated and is carried out by a variety of mechanisms, including through regulatory proteins and chemical modification of DNA.

Regulation of gene expression, or gene regulation, includes a wide range of mechanisms that are used by cells to increase or decrease the production of specific gene products.

Hence, gene expression is controlled on two levels. First, transcription is controlled by limiting the amount of mRNA that is produced from a particular gene. The second level of control is through post-transcriptional events that regulate the translation of mRNA into proteins.

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Answer: A problem with one system could affect other body systems because our body systems rely on each other.

Explanation: Each of your body systems relies on the others to work well. Your respiratory system relies on your circulatory system to deliver the oxygen it gathers, while the muscles of your heart cannot function without the oxygen they receive from your lungs.

A problem with the cardiovascular system (circulatory system) such as heart attack will affect the respiratory system and other systems of the body.

There are various systems that make up the human body. Some examples of these systems that make up the human body are:

These various system are mostly interconnected. Most of them work and in hand to keep the body functioning well. a problem with one might affect the other systems. A good example is the circulator system (cardiovascular system) and the respiratory system.

The cardiovascular system consists of the heart, muscles, and structures that help in the circulation of blood in the body. Oxygen is a major component of blood. Thus, the cardiovascular system, relies on the proper functioning of the respiratory system to supply oxygen. In essence, they both rely on each other.

Problems such as heart attack will result in the Cardiovascular System not functioning very well, and as such other systems such as the respiratory system will be affected.

A diagram showing different organ systems of the human body is attached below.

Therefore, a problem with the cardiovascular system, such as heart attack, will affect other systems of the body.

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Answer:

German biologist Theodor Schwann concluded that Cinimals are made of cells. Rudolph Virchow concluded that new cells are produced from other cells 6. The Cele theory combines the conclusions made by Schleiden, Schwann, and Virchow.

Explanation:

Answer:

A radiograph pen is used to draw lines with different thicknesses

Explanation:

A radiograph pen is a form of a technical pen that is used in drawing most specifically in architectural and engineering drawing.

It comes in different pointing sizes, or in some cases, the stylus can be disassembled to allow changing and replacing it with different styles of different widths to fit in.

For example, a radiograph pen can use a different stylus with a width of 0.35mm, 0.7mm, or 1.4mm, which in turn gives different line thickness when drawing.

Hence, in this case, the correct answer is "A radiograph pen is used to draw lines with different thicknesses."

Meiosis is when two parent cells give birth to two sister cells.

The cell that is created is a sister cell.

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The advantage of sexual reproduction in lycophytes is the occurrence of variation in organism.

The main advantage of sexual reproduction in lycophytes is the happening of variation in the physiology as well as genetic characteristics of the plant. Lycophytes usually produce spores which is a type of asexual reproduction in which identical type of offspring produce from the spores.

While on the other hand, if the lycophytes reproduce from sexual reproduction then different types of offspring produce which has different characteristics then its parents so we can conclude that the advantage of sexual reproduction in lycophytes is the occurrence of variation in organism.

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Answer: the product

Explanation:

Answer:

product

Explanation:

Answer:

The correct answer is - true.

Explanation:

In the meiosis cell division, there are four cells present with n number of chromosomes which means these cells generated from by the meiosis have a half number of the chromosome as their parents. This is the reason this type of cell division is known as a reduction division.

These cells that are produced are sex cells or reproductive cell sperm in male and egg in female all have n number of chromosome number as they have to fuse to form a zygote.

Answer:

A. POLYHEDRAL

Answer:

The correct answer is to Transport blood to all parts of the body so that gases, nutrients, and waste products are transported to and from the cells.

Explanation:

The nervous system does not do any of the other functions that are in the blue and orange squares. Hope this helps!

Answer: A

Explanation: At a maximum potential magnification of 1 nanometer, TEMs are the most powerful microscopes. TEMs produce high-resolution, two-dimensional images, allowing for a wide range of educational, science and industry applications.

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scientist use a transmission electron microscope (TEM) instead of a compound microscope to view a tissue sample, the TEM will produce an image with a higher resolution. Thus option 1 is correct.

A microscope is an instrument which produces large images of tiny  objects and provide observer a close view of minute structures at a convenient scale for examination and analysis.

Anatomically the microscope has  three structural parts, i.e. head, base, and arm, where head is known as the body and it carries the optical parts in the upper part of the microscope.

Base is used to support  and carries microscopic illuminators and Arms  which connect the base and the head and the eyepiece tube to the microscope base.

The optical parts are used to view, magnify, and produce an image from a specimen placed and the various pars are Eyepiece or ocular situated at the top of the microscope with standard magnification is 10X, Eyepiece Tube carries the eyepiece just above the objective lens.

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Answer:

B. Smaller fragments travel faster and farther than larger fragments.

Explanation: Shorter molecules move faster and migrate farther than longer ones because shorter molecules migrate more easily through the pores of the gel. This phenomenon is called sieving. [2] Proteins are separated by charge in agarose because the pores of the gel are too large to sieve proteins.

Answer:

Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio (base pair rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.

Answer:

Respiration

Explanation:

That's breathing system

Answer: Below::

Explanation:

1) Most job sites for wildlife biologists are at a state or federal agency/ level.

2) A Bachelor of Science Degree

3) Wildlife Biologists study wildlife (such as animals and plants) and how they interact with their ecosystems. On land and in water.

Answer:

I put B

Explanation:

I used socratic and it matched up the best, and like I just eliminated the other options

The study of the cell is called cell biology. There are two types on the basis of the number and these are unicellular and multicellular.

The correct option is option B which is Duplicated chromosomes that are split into two identical cells.

The cell divide to form the new cell and have the same number of chromosome is called mitosis cell divison.

Hence, the correct answer is option B.

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Answer:

Quit?

Explanation:

Answer:

its A

Explanation:

Answer:

The answer is in ocean

Explanation: