Answer:
asexual reproduction
Explanation:
In nature, some plants and single-celled organisms, such as bacteria, produce genetically identical offspring through a process called asexual reproduction. In asexual reproduction, a new individual is generated from a copy of a single cell from the parent organism.
Reproduction without the fusion of gametes is done without the fertilization of gametes, it is responsible for the formation of clones. The correct option is A.
What is a clone?The collection of genetically identical cells or in other words the organismsthat are produced without gamete fusion by a single progenitor either cell or organism is referred to as a clone.
Reproduction without the fusion of gametes do not have involvement of gamete, so crossing over will not take place in this type of reproduction.
As variation is the result of crossing over, this type of reproduction will have identical cells as the parent ones. These identical cells are called as clones.
Thus, the correct option is A.
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To what kingdom do coccidia belong?
Answer:
Chromista
Explanation:
Chromista is a biological kingdom consisting of some single-celled and multicellular eukaryotic organisms, which share similar features in their photosynthetic organelles (plastids).
Describe the invasion of wild parsnip, including the harm it causes
Answer:
poisonus
Explanation:
Answer:
came from Europe and Asia
invaded the entire state of Wisconsin
can burn your skin
reproduces rapidly
can be removed at root or with a powered brush cutter for large populations
Explanation:
Sorry that it is late, but this is the Edge version.
a gene may be discribed as
Answer: A gene can be defined as the functional segment of DNA where it is the unit of hereditary of the characteristics of the parents to the offspring
What occurred during immune system development to result in the presence of antibodies that can bind to the thyroid receptor? g
Answer:
If the immune system has a destructive and autoimmune response, it produces specific antibodies, which bind to the receptors of the thyroid cells and destroy them thinking that they are antigens or factors not characteristic of the body.
Explanation:
This happens because the thyroid cells do not present on its surface the histocompatibility complex, which is a surface protein similar to the proper and non-proper "seal", that is, it is the demarcation by which the antibodies and the cells are guided to recognize what foreign to the organism.
The histocompatibility complex is sometimes absent or rather mutated, thus generating that these cells are considered not their own and that the antibody is a receptor in order to generate the autolysis pathway or even the immune defense pathway.
Use the drop-down menus to label the parts of a nucleotide
the diagram below shows a sarcomere if a disorder makes it impossible for atp to bind to the myosin head what would happen to the sarcomere?
Answer:
B. The myosin and actin would not separate, and the sarcomere would remain contracted
Explanation:
ATP (adenosine triphosphate) acts both in the binding of myosin to actin, which occurs during muscle contraction, and also in its separation, which occurs during muscle relaxation.
When ATP is lacking, myosin remains attached to actin, causing muscle stiffness. This is what happens after death, producing a state of cadaverous rigidity (also called "rigor mortis").
An intense and uninterrupted stimulation causes the muscle to reach the maximum degree of contraction. Then, the muscle remains in contraction, this state is called tetany.
A very prolonged state of tetany causes muscle fatigue, in which, due to ATP deficiency, can cause a loss of muscle contraction capacity, after its relaxation.
how is it that the cells in different body tissues are able to perform different functions the cells exhibit different patterns of gene expression
Answer:
The correct answer is -The cells exhibit different patterns of gene expression.
Explanation:
The genome of a particular cell lies in its DNA sequence the information to show gene expressions which means that they make thousands of various proteins and RNA.
A cell generally expresses only a low ratio of its genes, and the various types of cells in organisms with a multicellular body system arise because various sets of genes are expressed.
Thus, the correct answer is -The cells exhibit different patterns of gene expression.
1. You are given a 1 gram soil sample of unknown bacterial load. After doing 10-fold serial dilutions of the soil in sterile water, 100 uL volumes are taken from each dilution for preparation of pour plates. Following incubation, each half of the 10-8 plate has 46 colonies.
a) What was the dilution factor?
b) How many bacteria were present in the soil?
2. Staphylococcus aureus divides every 20 minutes. A culture begins with 10 bacterial cells.
a) After 5 hours, how many generations have occurred
b) After 5 hours, how many bacteria are present?
3. How many milliliters would you need to prepare a 10-2 dilution from a 10ml starting culture?
Answer:
1a. 1:10
1b. 4.6×10¹³
2a. 15generations
2b. 327,680
Explanation:
10 fold serial dilution means 1ml of stock is mixed in 9ml distilled water. This is called as 10⁻¹ solution.
In this way, take 1ml each of every dilution and mix in 9ml distilled water to make 10⁻², 10⁻²-------10⁻⁸ dilutions.
Now, CFU/ml = no. of colonies × dilution factor/ volume of sample plated.
Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If she moves the operator to the far end of the operon, past the transacetylase (lacA)gene, which of the following would likely occur when glucose levels are low?
A. The inducer will no longer bind to the repressor.
B. The lac operon genes will be transcribed continuously.
C. The repressor protein will no longer be produced.
D. The operon will never be transcribed.
E. The repressor will no longer bind to the operator.
Answer:
Option B
Explanation:
The lac operon genes will be transcribed continuously.
In as much as the pathway's substrate is still available and present for this operon, there would be continuously transcription of the genes. Due to yellow level of glucose, more cAMP accomplish and then RNA polymerase binds to the lac promoter effectively only when the CAP-cAMP complex is also bound.
The activity of the repressor is not present here as placing the operator to this position does not disturb its transcription.
In organisms dna contains the codes for its traits
Answer:
Yes.
DNA or deoxyribonucleic acid is a thread like structure that contains Hereditary and Genetic materials such as chromosomes.
Scientists call it the 'Book of life'.
"While bird watching, Carl hypothesized he could identify 73 different types of birds in one day. He actually identified 65 different types of birds. What was his percent error
Answer:
15.87%
Explanation:
Carl's percentage error would be 15.87%.
From the data, the hypothesized number of birds Carl could identify is 73.
The actual number of birds he was able to identify is 63.
The margin of error between the two = 73 - 63 = 10.
Hence, percentage error = error/true measurement x 100%
= 10/63 x 100% = 15.87%
Question 22 (5 points)
The major difference between B cells and T cells is that
T cells do not produce antibodies.
B cells do not produce antibodies.
B cells always circulate in the blood stream.
T cells always circulate in the blood stream.
Answer:
B cells always circulate in the blood stream
Explanation:
just took test pf.
Question 4 (5 points)
Durnig the digestive process, the majority of nutrient absorption occurs in which
organ?
Small intestine
Esophagus
Large intestine
Stomach
Answer:
The answer is Small intestine
Hope this helps
Answer:
small intestine
Explanation:
The majority of nutrient absorption occurs in the small intestine, and specifically in the duodenum. The esophagus connects the mouth to the stomach, and the stomach is the site of chemical digestion, but not the absorption of nutrients.
A chemical manufacturing company wants to control the odor produced by chemicals. Which method can they use for this purpose?
Answer:
gas adsorptionExplanation:
answer for edmentum :)
Select all of the answers that apply. Besides lava setting fire to combustible materials, what other natural hazards can occur from a volcanic eruption?
Answer:
earthquakes
landslide and mudslides
flooding
How can we determine the population of soil?
Answer:
by the depth of the soil
The famous experiment of Ivan Pavlov where he researched dogs and their responses to stimuli was designed to evaluate this type of learning.
Question 23 options:
Insight
Imprinting
Classical conditioning
Trial-and-error
Answer:
Classical conditioning
Explanation:
Classical conditioning or Pavlovian conditioning is conducted on living organisms to make them associate one or more actions to a given (often familiar) stimulus or stimuli. Ivan Pavlov, in his experiment, trained a dog to associate an action, salivating for food, with the sound of a metronome.
Answer:
Classical conditioning
Explanation:
Ivan Pavlov researched classical conditioning and played a sound for dogs before feeding. The dogs became conditioned to receiving food after the bell. Once the dogs were trained, whenever they heard the bell, they began drooling in expectation of food.
Identify the statements that accurately describe how hydrogen ion concentration relates to energy production in oxidative phosphorylation. The pH in the intermembrane space is higher than the pH in the mitochondrial matrix. Oxidative phosphorylation relies on the hydrogen ion concentration gradient generated and maintained by the electron transport chain. Hydrogen ions are actively transported out of the mitochondrial matrix. Hydrogen ion concentration is higher in the intermembrane space than in the mitochondrial matrix. Energy is generated as a result of the difference in hydrogen ion concentration between the mitochondrial matrix and the cytoplasm.
Oxidative phosphorylation relies on the hydrogen ion concentration gradient generated and maintained by the electron transport chain.
Hydrogen ions are actively transported out of the mitochondrial matrix.
Hydrogen ion concentration is higher in the intermembrane space than in the mitochondrial matrix.
What Plane was inspired by the coopers hawk and why
a. p-51 mustang
b. concord
c. b-29
Answer:
c. b-29
Explanation:
B-29 is a four engine bomber which was made by United States of America. It plays a central role in WW ll and Korean wars. Its design is taken from hawk so it has many similarities with hawk. Both hawk and B-29 has big body size, big wings and big tail. This structure make this plane to fly higher in the sky and these four engines increases speed of the jets. Due to its big size, it carries more number of bombs with it and cause severe damage to the enemies.
The DNA isolated from a newly discovered virus is found to be 32 percent A, 18 percent C, 18 percent G, and 32 percent T. The base composition of the complementary DNA would be _______ percent A, _______ percent C, _______ percent G, and _______ percent T.
Answer:
The base composition of the complementary DNA would be
32 percent A,
18 percent C,
18 percent G, and
32 percent T
Explanation:
There is a 1:1 ratio between complementary bases, which is why the ratio of each base will remain the same on its other strand as well. Together, these two strands will provide the genome of this new virus.
About 16% of the world's total oil output:
A) comes from offshore drilling
B) is made by the United States
C) is mined deep beyond the continental shelf
D) comes from oil rigs in the Atlantic Ocean
Answer:
The answer is A, It comes from offshore drilling.
Explanation:
Cause i got it right.
During Transcription, a(n) ________ is created in the __________.
Answer:
During Transcription, an mRNA is created in the nucleus.
Explanation:
Transcription is the mechanism where the genetic information contained in one strand of the DNA molecule is decoded in the messenger RNA (mRNA) molecule, which will be subsequently used as template to synthesize a protein during translation. In eukaryotes, transcription is a nuclear process that has three phases: initiation, elongation and termination. During initiation, an RNA polymerase enzyme and different transcription factors form the initiation complex that binds to the promoter gene region and thus synthesizes the first RNA nucleotides. Subsequently, this RNA sequence is elongated by the action of the RNA polymerase. Finally, during termination, the terminator sequence in the DNA template induces the release of the DNA and this mRNA sequence is terminated.
What are the technological building blocks required to fulfill the future plans of the industrial biotechnology? Also state the number of key horizontal issues that need to be addressed when these future plans are implemented?
Answer:
The technological components are: research, natural resources and specialized labor.
These components will be used in issues such as the demand for food, the optimization of natural resources and the control of climate change.
Explanation:
One thing we can say about our future: We will be very dependent on the work of industrial technology. This is because it will be able to use microorganisms, natural resources and biological molecules to develop products capable of meeting some of our needs.
However, with the advance of climatic changes, the demand for food increasingly and the destruction of natural resources in a constant way, we can say that biotechnology will face several challenges and to overcome them need to have technological components such as the establishment of research through of a qualified and specialized workforce that promotes the optimization of natural resources and their products.
Based on this information, what term can be used to describe the walking stick?
Answer:
CamouflageExplanation:
The walking stick is a thin insect with a brown color. Due to it's thinness and it's color, birds often overlook it and mistaken it for a twig, making it survive well in the forest .
Hope this helps you
Euploidy in plants with examples
Answer:
This is a chromosomal variation that involves the entire set of chromosomes in a cell or an organism.
e.g. polyploid,e.t.c.
Explanation:
During the _______ month the lungs can expand and contract to practice breathing techniques (even though oxygen is still supplied through the placenta).
Answer:
During pregnancy it is the eighth month I think. Sorry if it’s wrong.
Explanation:
Which structure is represented by the X?
Answer:
May be trachea
Explanation:
What is the probability the offspring will be heterozygous for this trait?
25%
50%
75%
100%
Answer:
50%
Explanation:
for a child Aa is 50%
Explain, using at least three reasons why the following scenario is a problem for farming.
Situation: A news report stated that many species are facing extinction. The major animals that pollinate our crops are
diminishing, which is causing the farmers to use more artificial means to fertilize the plants.
Answer:
1. Less species pollinating affects the rate of reproduction of plants which eventually leads to their extinction
2. If major species become extinct it could negatively affect the food chain. For example if a predator species dies, it could lead to infestation of mice or an insect that destroys crops
3. Switching to more artificial methods means that farming become less profitable as more money is spent on growing plants so less people farm increasing food prices across the globe
Explanation:
wild animals like tiger,wolf,lion and leopard don't eat plants.does this mean that they can survive without plants?Can you provide a suitable explaintion
Answer:
Explanation:
No, they cannot survive without plants because carnivore eats the animals which is normally a herbivore and the herbivores eat plant.The animals which lion/wolf/tiger etc eats are mostly herbivores so herbivores would die if plants are not available and lion would not get food .
Lion like all other animals requires Oxygen for survival .The present stock of Oxygen would not lost long in absence of plants.Therefore plants are a must for survival of even the carnivores.
hope it helps