When spread out and viewed with electron microscopy, an active rrna gene looks like a?
While conducting experiments on pea plants, Mendel observed that the combination of traits in the offspring did not match up with the parents. How did Mendel explain this?
A.) The Law of Segregation
B.) The Principle of Independent Assortment
C.) The Principle of Mitotic Division
D.) The Principle of Sex Linked Traits
Answer: Correct answer B. The principle of independent assortment
Explanation: The Principle of Independent Assortment, refers to crosses refers to dihibited crosses carried out in peas by Mendel. This principle explains that genes will be segregated or separated independently in meiosis, resulting in different allelic combinations in gametes and also the different combinations of characteristics in the offspring. Keep in mind that this principle only applies to gene traits that are on different chromosomes (not linked).
You have a patient who is a positive for strep on rapid antigen testing (rapid strep test). you order amoxacillin after checking for drug allergies (patient is negative) but he returns 3 days later, reporting that his temperature has gone up, not down (101.5 f in office). you also note significant adenopathy, most notably in the posterior and anterior cervical chains, some hepatomegaly, and a diffuse rash. you decide:
Which organelle is responsible for producing the energy for cellular processes?
What food did they eat at the first thanksgiving?
Final answer:
The first Thanksgiving in 1621 featured a menu of venison, fowl, fish, and harvested crops, shared between the Pilgrims and the Wampanoag tribe, marking a moment of cooperation and gratitude.
Explanation:
The first Thanksgiving in 1621 was a gathering that symbolized cooperation and gratitude between the Pilgrims and the Wampanoag tribe. The feast likely included venison, fowl such as ducks and geese, fish, and possibly wild turkey, alongside harvested crops like corn. This event contrasted with modern Thanksgiving celebrations, notably in the absence of iconic dishes like pumpkin pie and cranberry sauce. The meal was consumed without the convenience of eating utensils, using only knives and their hands, embodying a much more rudimentary form of dining. This historical feast underscores the importance of adaptability, and the combined efforts of the Pilgrims and Native Americans in celebrating the fruits of their first successful harvest in the New World.
What role do plasmodesmata play in plant cells? see section 11.2 ( page 239) ?
Final answer:
Plasmodesmata are channels connecting the cytoplasm of adjacent plant cells, allowing for the transfer of materials and signals, essential for plant communication and coordination.
Explanation:
Role of Plasmodesmata in Plant Cells
Plasmodesmata play a crucial role in maintaining cellular communication and transport in plant cells. Since the plasma membranes of neighboring plant cells are separated by rigid cell walls, these structures provide the necessary channels for cytoplasmic interconnectivity. Through plasmodesmata, materials such as nutrients, signal molecules, and water can be efficiently transported from one cell's cytoplasm to an adjacent cell's cytoplasm. They enable the entire plant to function as a coordinated unit, with water and nutrients being transferred from roots to stems and leaves, and signals being disseminated across the plant's cellular network.
Contrary to animal cells that use gap junctions for communication, plant cells utilize plasmodesmata. These channels are selectively permeable, allowing only specific small molecules, like calcium ions, to pass through while keeping larger molecules such as proteins and DNA out. This permeability ensures that while cells can quickly transmit signals and coordinate responses, they also maintain their individuality.
In conclusion, plasmodesmata are indispensable for the growth and survival of plants as they facilitate the essential processes of communication, coordination, and transport throughout the entire organism.
The dust bowl in the great plains is the best example of which push or pull factor?
Final answer:
The Dust Bowl was a push factor that led to the migration of millions from the Great Plains due to environmental and economic collapse from drought and poor land management.
Explanation:
The Dust Bowl in the Great Plains is the best example of a push factor. This environmental disaster, caused by a mix of drought and poor land management practices, resulted in severe wind erosion that devastated the farmlands. The consequence was a mass exodus, with millions of people moving out of the affected states between 1930-1940, during one of the largest migrations in US history.
As conditions in the Great Plains deteriorated, farms became unsustainable due to the lack of water, leading to failed crops, immense dust storms, and economic hardship. The Dust Bowl directly pushed people away from their homes and livelihoods in search of better living conditions elsewhere. This movement was largely influenced by the lack of agricultural opportunities following the ecological and economic collapse in the region.
nitrogen gas reacts with hydrogen gas to form ammonia. what are the reactants in the chemical reaction
Nitrogen gas and hydrogen gas
what organelle is semi permeable and surrounds the cytoplasm of both animal and plant cell
Which is an explanation that is well supported by data, but can be altered or added to as more information is learned?
BIOLOGY 1
The energy released from glucose by the process of cellular respiration is in the form of _____.
Explanation:
energy released from glucose by the process of cellular respiration is in the form of adenosine triphosphate (ATP)
What are masterpieces and why are there so few of them?
When more sensory neurons are tuned to a particular feature of a stimulus, the organism will:?
Lori made a spreadsheet to track her weekly exercise. columns b-h are monday-sunday, row 2 is cardio, and row 3 is strength training. which cell should lori use to track her 30 minutes of cardio on wednesday?
Based on the distribution of her activities in her spreadsheet, Lori should record Wednesday's 2 hours of cardio in cell 2D.
How to identify which cell Lori should use?To know which cell in her spreadsheet Lori should use to record her Wednesday activity, we must take into account that:
B = MondayC = TuesdayD = WednesdayE = ThursdayF = FridayG = SaturdayH = SundayAccording to the above, all Wednesday activities should be recorded in boxes D. On the other hand, they should be classified in row 2 if they are cardio and 3 if they are strength. So Wednesday's 30-minute cardio activity should go in cell 2D.
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Answer:
c2
Explanation:
A theory of evolution based on natural selection was developed independently by ____.
The water that falls from the sky today as rain may have once been part of the ocean. How can this be?
Answer:
The water that falls from the sky today as rain may have once been part of the ocean because of the cycle of water.
Explanation:
The water cycles between the ocean, the land, and the atmosphere. In a simple way to explain:
1. Water from the ocean, streams, rivers, and lakes evaporates and go to the atmosphere.
2. In the atmosphere, the water cools and condense in clouds.
3. Then, water from the clouds goes down to the land through snow or rain.
4. Then, water from land is collected in ocean, streams, rivers, and lakes; and the cycle begins again.
List three major marine ecological zones
Which of these statements BEST defines vestigial organs? A) vital organs that are functional in all organisms of a lineage. B) vital organs that are functional only in alternate generations of a linear. C) redundant organs present in an organism, which have been functional in the organism’s ancestors. D) redundant organs present in an organism, which will be functional in the succeeding generations of the lineage
What type of interaction is characterized by a health monitoring system sending a one time code to unlock the front door of the home of a patient who needs emergency treatment?
Did deletion of any of the possible control elements cause a reduction in reporter gene expression? how can you tell?
What is the portion of the eye that allows light to pass into the posterior chamber?
Why are six carbon dioxide molecules required to make one glucose molecule?
All information that an animal needs to live is stored in its
Answer:
The correct answer will be DNA.
Explanation:
The nucleic acid- DNA and RNA acts as genetic or heredity material of the organism. It acts as the genetic material of the cell as it can store the information required for the cell to maintain its life in coded form.
In the given case, since the cell is a eukaryote, its genetic material is DNA which acts as the genetic material of the cell. The information of the animal cell is stored in the form of codons which are triplets of the nitrogenous bases arranged in the coding region of the genome called genes.
It is these codons which code for the specific amino acids which bind with each other to form proteins. These proteins serve important functions of the cell from a catalytic role to the structural component.
Thus, DNA is the correct answer.
What is the first step in the scientific process? A. hypothesis B. observation C. experimentation D. asking a question
The first step in the scientific process is typically B. observation. Therefore, option B. observation is correct.
Before forming a hypothesis, conducting experiments, or asking specific questions, scientists often begin by making observations of the natural world.
These observations can lead to questions and hypotheses, which then guide further experimentation and investigation.
So, while all the options mentioned (hypothesis, experimentation, asking a question) are important components of the scientific process, observation usually comes first as it serves as the foundation upon which the rest of the process is built.
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The ________ is the first relay station for gustatory information arising from the tongue.
which so-called "natural" fat fighter is made from the leaves of
c. sinensis?
A clinical laboratory technician should manage an independent medical laboratory true or false
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Which statement is true?
Eukaryotic cells have one membrane.
Eukaryotic cells have multiple membranes.
Prokaryotic cells have multiple membranes.
Prokaryotic cells do not have a membrane.
How many electrons are in the outermost energy level of an oxygen atom as it shares electrons with hydrogen atoms as part of a water molecule? 2 6 8 4
Blood-sugar levels are regulated by two hormones. Insulin acts to decrease blood-sugar levels; glucagon acts to increase blood-sugar levels. Based on this information, you would expect which of the following to be true immediately following a meal?