A bacterial cells DNA is found in its a. capsule b. nucleoid region c. nucleus d. ribosomes

QUESTION POSTED AT 06/12/2019 - 01:41 PM

Related questions

Mark turned quickly, pivoting on his right foot, while he was playing basketball. He felt a sudden, sharp pain in his knee and found his leg would not support him well. When he tried to walk off the court, his knee wobbled sideways. Based on this evidence, which of the following has he most likely injured?

Based on the evidence shown above, the option that best describes the injury he suffered from playing basketball is that he has torn the cartilage that cushions the interior of his knee, keeping it aligned with the bones in his leg.

Answer: D)

I hope it helps, Regards.

ANSWERED AT 18/01/2020 - 07:37 AM


QUESTION POSTED AT 18/01/2020 - 07:37 AM

Greg and Andrea are trying to find out how long it takes amylase, a digestive enzyme found in saliva, to break down a sample of starch. They put their sample in a beaker and covered it with their own saliva. After allowing it to sit on the lab table for 1 hour they measured the remaining surface area of the starch. What is the best way they could improve their experiment?

The answer is: the amount of the saliva samples must stay consistent while the amount of starch must vary.

The amount of the saliva samples must stay consistent because amylase, present in the saliva, is the independent variable which affects the dependent variable - the amount of starch. So, amylase will do its job while remaining surface area of the starch will depend on the starting amount of the starch.

ANSWERED AT 18/01/2020 - 07:36 AM


QUESTION POSTED AT 18/01/2020 - 07:36 AM

Why are many cells wired together in a typical photovoltaic panel

The answer is because they will increase the yield of electricity.

A photovoltaic panel is able to convert light into electricity. This is because it consists of many cells wired together. The cells are wired in a series and/or parallel to produce the required voltage and subsequently increase the amount of electricity generated. The number of cells depends on the amount of electricity required. 

ANSWERED AT 18/01/2020 - 07:29 AM


QUESTION POSTED AT 18/01/2020 - 07:29 AM

Which two cell parts are most likely found in both types of cell? cell wall and cell membrane lysosome and vacuole vacuole and centriole lysosome and chloroplast'

Answer:

Plant and animals cells they are both eukaryotic cells, both have membrane bound organelles.They have nucleus, cytoplasm, cell membrane, mitochondria, endoplasmic reticulm, golgi apparatus, lysosomes, peroxisomes and ribosomes. Plant have cell walls and chloroplast animal do not

Explanation:

ANSWERED AT 18/01/2020 - 07:17 AM


QUESTION POSTED AT 18/01/2020 - 07:17 AM

Which two cell parts are most likely found in both types of cell? A.cell wall and cell membrane B.lysosome and vacuole C.vacuole and centriole D.lysosome and chloroplast

Cell wall and cell membrane are both in plants and animal cells in fact in all cells because they are the protective layer for outsiders 

ANSWERED AT 18/01/2020 - 07:17 AM


QUESTION POSTED AT 18/01/2020 - 07:17 AM

A bacterium would be considered? A. Unicellular B. A cell C. An organism D. All the above

A bacterium is any one of a group of very small living things that often cause disease

ANSWERED AT 18/01/2020 - 07:09 AM


QUESTION POSTED AT 18/01/2020 - 07:09 AM

A student was given a task to observe a bacterial specimen made from dilute yogurt and sketch the shape of bacteria seen. he drew circular shapes. what kind of bacteria could these be?

The answer is cocci.

There are three basic types of the shape of bacteria:
- Cocci - spheres,
- Bacilli - rods,
- Spirochetes - spirals.

If a student drew a circular shape, this probably represented sphere. Therefore, the shape of seen bacteria was spherical which suggests that the bacteria must be cocci.

ANSWERED AT 18/01/2020 - 07:08 AM


QUESTION POSTED AT 18/01/2020 - 07:08 AM

Which does not describe the relationship between the nucleus and the electron cloud of an atom

The one that does not describe the relationship between the nucleus and the electron cloud of an atom would be : the mass of  the nucleus and electron cloud are balanced.

Ie : The mass of nucleus and electron cloud are always differ from one another

hope this helps

ANSWERED AT 18/01/2020 - 07:07 AM


QUESTION POSTED AT 18/01/2020 - 07:07 AM

An organism has the following traits: Unicellular no nucleus contains DNA which kingdom does it most likely belong to?? A. Animalia B. Bacteria C. Protista D. Eukarya

B. Bacteria 

 Unicellular organisms are not that complicated in terms of parts. They are not made to have a lot of systems and are very much suited to flourish in many places.       
Unicellular organisms are not seen to the naked eye. Because of this, unicellular organisms are not easily identified by a lot of predators except of their own kind.

ANSWERED AT 18/01/2020 - 07:00 AM


QUESTION POSTED AT 18/01/2020 - 07:00 AM

Gene regulation in eukaryotic cells involves unique regulatory elements in different types of cells. True or false?

The correct answer is true. Gene regulation in eukaryotic cells indeed is involved in unique regulatory elements in different types of cells. Gene regulation or expression need a wide range of mechanisms that uses cells to increase and decrease any gene production.

ANSWERED AT 18/01/2020 - 07:00 AM


QUESTION POSTED AT 18/01/2020 - 07:00 AM

In your body, different types of cells use different genes. True or false?

No. False

Genes are the source of information where the individual is shaped and formed. These are not dependent on the cell type rather, cell types are formed by certain activation in these genes. They are the artist that trigger the formation and function of these cells. 

ANSWERED AT 18/01/2020 - 06:52 AM


QUESTION POSTED AT 18/01/2020 - 06:52 AM

Which issue is a negative effect of cell technology on society? Immortal animal cell lines can be used to model human cells. The use of human cells in research can lead to ethical problems. Organ culture increases the time between donation and transplant. People are more aware of the results of cell technology research.

The use of human cells in research can lead to ethical problems

Because the new use of cells most often lead to this "grey area" in ethics as it is a new area of science and our society is not yet conditioned to this scientific breakthough. As there is no "moral code" on human cell use, ethical objections can arise and led to conflicts.

When looking at the other options they do not cause negative effects on society

1) 
Immortal animal cell lines can be used to model human cells.
 ----> This technology is not yet developed so it cannot be negative (yet)
2) Organ culture increases the time between donation and transplant.
-----> Organ culture are actualy
an alternative for organs from donors, and will not increase the time btween donation and transplant
3) People are more aware of the results of cell technology research.
-----> Awareness of research lead to greater understanding and unity

ANSWERED AT 18/01/2020 - 06:47 AM


QUESTION POSTED AT 18/01/2020 - 06:47 AM

Biologists use ball-and-stick models to study complex molecules by representing atoms with balls and bonds with sticks. DNA is a biological molecule that contains millions of atoms. What is a limitation of using a ball-and-stick model for DNA?

Most models can't incorporate all the details of complex natural phenomena. For example, when measuring distances around the Earth it's convenient to model the Earth as a sphere, but this doesn't incorporate variations in distance because of mountain ranges, valleys and other topological features the traveler must traverse. Incorporating these additional details would make the model too complex for easy use. Since models must be simple enough that you can use them to make predictions, they often leave out some of the details.

ALSO.

The conformation of molecules are based on probability. It fails to take into account the electronegativity of individual atoms. And it is ineffective in showing inorganic interactions with metals and such.

ANSWERED AT 18/01/2020 - 06:45 AM


QUESTION POSTED AT 18/01/2020 - 06:45 AM

Explain the different Cell Cycle stages and what event occurs with each one.

The cell cycle is divided into two main stages: the interphase or nondividing stage and the mitotic or dividing stage. In interphase is the stage where a cell prepares itself by replicating its own genetic information and all of its organelles. The cell goes through this period of growth before it undergoes mitosis. The following are its three important phases. Gap 1 (G1) phase in the first gap, the cell increases in size preparation for division. During this stage, the cell prepares itself for DNA synthesis. Synthesis (S) phase DNA synthesis (replication) occurs. Chromosomes are also replicated which later on will become sister chromatids. Gap 2 (G2) phase this is the second gap. The cell continues to grow and synthesize RNA and proteins. There is also a G2 checkpoint to see if the cell is already prepared for mitosis. Some cells undergo the cell cycle only once, or they stop dividing. These cells will go to the Gap 0 (G0) phase, the resting phase of the cell. Nerve and blood cells remain in G0 phase for the rest of their lives. Thus, nerve cells and blood cells do not undergo mitosis. In mitosis once the cell is ready for cell division it will go to the next stage- mitosis. Mitosis is the process of nuclear division of a cell. Prophase is the of mitosis that takes up around 50-60 percent of total time for mitosis. It is subdivided into three substages: early, middle, and late prophase. In early prophase, chromosomes condense and start to coil up into short rods, the nuclear membrane disappers, and the centrioles appear and move toward the opposite sides (the poles) of the nuclues. In the middle prophase, mitotic spindle fibers are formed between the centrioles.Asters also formed on each side of the nucleus. The centrioles move towrdsthe poles. The nuclear membrane dissolves. In late prophase, chromosomes are attached to the centrioles through the spindle fibers. In metaphase, the centrioles have completed their migration toward the poles. The double-stranded chromosomes are aligned at the cells's midplane (equator). The centromeres of each chromosome are attached to the fully formed spindle fibers. In anaphase, the centromeres, followed by the chromatids, are separated when the spindle fibers shorten and pull the chromatids toward the end of the poles. The chromatids are now called chromosomes. Telophase is the last stage of mitosis which is usually referred to as the "reveres prophase"  stage.In this stage, the spindle fibers disappear, the nuclear membrane and nucleoli reappear, and the chromosomes uncoil. Cytokinesis, follows mitosis. In animal cells, a cleavage furrow is formed until the membrane separates, forming two daughter cells. In plant cells, a cell plate is created that eventually develops into a cell wall.

ANSWERED AT 18/01/2020 - 06:40 AM


QUESTION POSTED AT 18/01/2020 - 06:40 AM

All your cells have the same genes. True or false?

That is True! As it says here on a website:All the cells in a person's body have the same DNA and the same genes. However, the difference between cells in different tissues and organs is that the "expression" of the genes differs between cells.

ANSWERED AT 18/01/2020 - 06:40 AM


QUESTION POSTED AT 18/01/2020 - 06:40 AM

When cells break down food molecules, energy is?

It is temporarily stored in ATP molecules

ANSWERED AT 18/01/2020 - 06:22 AM


QUESTION POSTED AT 18/01/2020 - 06:22 AM

Why does DNA has an overall negative charge?

A DNA strand contains a polymer of nucleotides that form bonds between phosphate groups. This would form into compounds made from the hydroxyl pentose from another nucleotide. This process would often use two OH acids and the last one can ionize freely. Because of this, the charge would be negative

ANSWERED AT 18/01/2020 - 06:17 AM


QUESTION POSTED AT 18/01/2020 - 06:17 AM

Which of the following processes releases energy to be used by a cell? A. a phosphate group is added to atp to form adp. B. a phosphate group is added to adp to fprm atp c. a phosphate group is removed from adp to form atp D. a phosphate group is removed from atp to form adp


D. a phosphate group is removed from atp to form adp

ATP usually releases energy by breaking down the weak phosphate cell present.  The energy released due to the breaking down of the phosphate cell is then utilized. The ATP is converted to ADP. Whenever a cell feels the necessity for energy it releases a phosphate to gather the energy. It is an automatic and ongoing process. The weak bond between the second and the third phosphate is always targeted for turning ATP to ADP. This is the reason ATP is considered the main energy currency for the cell. 

ANSWERED AT 18/01/2020 - 06:16 AM


QUESTION POSTED AT 18/01/2020 - 06:16 AM

A cell of an organism has four chromosomes. It undergoes a process at the end of which two daughter cells are produced. Each daughter cell has four chromosomes. Which process is described?

Mitosis 

Mitosis
and meiosis are simply cell division processes that occurs differently, they're characteristically divergent from each other according to their function and structure. Mitosis is the cell division that happens in all cells in the human body except sperm and egg cells. They produce diploid cells. Meiosis on the other hand is responsible for the cell division of the gametes, spermatogenesis (sperm cells) and oogenesis (egg cells), such haploid cells. 

ANSWERED AT 18/01/2020 - 06:15 AM


QUESTION POSTED AT 18/01/2020 - 06:15 AM

Vascular plants exhibit alternation of generation. What is alternation of generation? A. The plant exhibits reduced sporophyte and dominant gametophyte alternately. B. Plant cells undergo mitosis and meiosis alternately. C. The plant exists as a diploid organism, and at other times as a haploid

The right answer for the question that is being asked and shown above is that: "A. The plant exhibits reduced sporophyte and dominant gametophyte alternately." Vascular plants exhibit alternation of generation. The alternation of generation is that the plant exhibits reduced sporophyte and dominant gametophyte alternately.

ANSWERED AT 18/01/2020 - 06:09 AM


QUESTION POSTED AT 18/01/2020 - 06:09 AM

Which is a tough and flexible layer that surrounds plant cells, as well as some algal and bacterial cells?

The correct answer is cell wall. The cell wall is a tough and flexible layer that surrounds plant cells, as well as some algal and bacterial cells. The cell wall is rigid enough because of its components; cellulose, in which is used for both protection and structure. 

ANSWERED AT 18/01/2020 - 06:06 AM


QUESTION POSTED AT 18/01/2020 - 06:06 AM

Variation of ecological habitats within a species is characteristic of which type of diversity? a. Genetic diversity b. Ecosystem diversity c. Species diversity d. Regional diversity

The right answer for the question that is being asked and shown above is that: "B. Ecosystem diversity." Variation of ecological habitats within a species is characteristic of the type of diversity which is the Ecosystem diversity

ANSWERED AT 18/01/2020 - 06:04 AM


QUESTION POSTED AT 18/01/2020 - 06:04 AM

Biochemical analysis uses similarities in __________ as evidence for evolutionary relationships. A)DNA sequences B)bone structure C)cellular architecture D)homologous structures

The correct answer is (a.) DNA sequences. The biochemical analysis uses similarities in DNA sequences as evidence for evolutionary relationships. The biochemical analysis is the key component of drug discovery and research, with the use of DNA sequences; a process of determining the organized structure of nucleotides within a DNA molecule. 

ANSWERED AT 18/01/2020 - 06:04 AM


QUESTION POSTED AT 18/01/2020 - 06:04 AM

An agriculturist plants legumes, which host the bacterium Rhizobium in their root nodules for nitrogen fixation. How will these legumes enrich the soil? Select the correct answer. A.they will overcome the deficiency of nitrogen in the soil. B.they will allow bacterial growth in the soil. C.they will prevent root diseases caused by other bacteria.

The right answer for the question that is being asked and shown above is that: "A. they will overcome the deficiency of nitrogen in the soil." These legumes enrich the soil is that they will overcome the deficiency of nitrogen in the soil. 

ANSWERED AT 18/01/2020 - 06:03 AM


QUESTION POSTED AT 18/01/2020 - 06:03 AM

In an eight-cell embryo of an organism, the cells of the upper tier are aligned over the cells of the lower tier at a slight angle. Which organism is it likely to be? Earthworm Starfish Sea cucumber

Answer: Sea cucumber

Explanation: The sea cucumber is detivores that belongs to the phylum Echinodermata. They are marine animals with the leathery skin and elongated body.

They helps in the recycling of the nutrients in the after which the bacteria can continue the breaking process. The alignment of the cells in the body of sea cucumber shows radial holoblastic radial symmetry in which the the cells of the upper tier are aligned on the lower tier of the cells.

ANSWERED AT 18/01/2020 - 06:01 AM


QUESTION POSTED AT 18/01/2020 - 06:01 AM

A worker sprayed fertilizers, which stimulate the growth of native bacteria, on an oil-soaked area. Which one of the following capabilities of bacteria could have led to the above action? A. bacterial growth reduces the chances of fire due to oil spill. B. bacteria digests patroleum and help in cleaning up oil spills. C. bacteria survives the harmful effect of fertillizers.

The right answer for the question that is being asked and shown above is that: "B. bacteria digests patroleum and help in cleaning up oil spills."A worker sprayed fertilizers, which stimulate the growth of native bacteria, on an oil-soaked area. The capability of bacteria that could have led to the above action is that bacteria digests patroleum and help in cleaning up oil spills.

ANSWERED AT 18/01/2020 - 06:00 AM


QUESTION POSTED AT 18/01/2020 - 06:00 AM

James was observing cells under a microscope. He observed some cells which had a layer outside the plasma membrane. What is this layer called?

The answer is letter A. Plasma membrane. The plasma membrane is the outer membrane that divides the interior cells and the outer cells. The plasma membrane protects the cell from its surroundings. The plasma membrane contains phospholipids that contains protein. 

ANSWERED AT 18/01/2020 - 05:55 AM


QUESTION POSTED AT 18/01/2020 - 05:55 AM

Is it possible to get pregnant a woman if she have a very small egg cell? in comparison a normal egg cell would be like a size of an ostrich but what if it was a size of a quil egg?

The size varies in terms of fertility. The larger the size of the fertilized egg, the chances of the fertilization higher compared to eggs that are relatively smaller. Sperms are  vessels of DNA with enough nutrients to penetrate the eggs.

ANSWERED AT 18/01/2020 - 05:55 AM


QUESTION POSTED AT 18/01/2020 - 05:55 AM