which microscope is best used to see the organisms in a drop of pond water
If atp is present in relatively high amounts, what is likely to happen to the rate of glycolytic activity in that cell?
In the snail cepaea nemoralis, an autosomal allele causing a banded shell, u, is recessive to the allele for an unbanded shell, u. genes at a different locus determine the background color of the shell. the allele for a yellow shell, b, is recessive to the allele for a brown shell,
b. a banded, yellow snail is crossed with a homozygous brown, unbanded snail. the f1 progeny are then crossed with banded, yellow snails in a testcross. predict the percentage of progeny in each phenotype if the two genes are linked with no recombination, if the two genes assort independently, and if the genes are 20 m.u. apart. place the percentage for each phenotype for each of the scenarios in the table below. percentages can be used more than once.
The predicted phenotypes differ based on whether the genes are linked with no recombination, assort independently, or are 20 m.u. apart. With no recombination, there will be 50% banded brown and 50% banded yellow progeny. Independent assortment or 20 m.u. apart genes result in a 25% and 40%-10% split among the four possible phenotypes, respectively.
To predict the phenotypes of the progeny in the given scenarios, we need to understand the genetics behind the snail's traits. The banded shell allele 'u' is recessive to unbanded 'U', and the yellow shell allele 'b' is recessive to brown 'B'. In the initial cross of a banded yellow snail (uubb) with a homozygous brown unbanded snail (UUBB), all F1 progeny will be UuBb (banded brown), as each allele is incompletely dominant over its counterpart.
For the testcross of F1 progeny with banded yellow snails, if the two genes are linked with no recombination, all progeny will display the parent phenotypes, since the alleles are inherited together. This would mean 50% banded brown and 50% banded yellow. If the genes assort independently, we would expect a phenotypic ratio of 1:1:1:1, following Mendel's law of independent assortment, resulting in 25% of each possible phenotype. When the genes are 20 map units (m.u.) apart, implying a 20% recombination rate, the expected phenotypes will be: 40% banded brown, 40% banded yellow, 10% unbanded brown, and 10% unbanded yellow.
On a percentage basis, what type of sequence comprises the most of the human genome? what type of sequence comprises the least?
Non-coding….exons. Most part of the human genome does not code for proteins. They include what was then referred to as ‘junk DNA’. Noncoding regions contain introns and transposable elements, telomeres, and centromeres. Exons, on the other hand, are the regions of the DNA that code for proteins that are responsible for the normal body functions.
Digitized information can be used by computers. Please select the best answer from the choices provided T F
Digitization is the process of converting information into a digital format. The statement that digitized information can be used by computers is true. And not is only true, but digitized information is the only information computers can understand and work with. Digital information means computer-readable information.
Green and brown algae share many common features. Both have pigments for trapping sunlight and use photosynthesis for energy. Both store their food as sugars. Both have cell walls and plant-like bodies. However, their DNA suggests that they are not even remotely related to one another. Green algae and brown algae show __________________ evolution, since they look similar, but are not close relatives.
A) convergent
B) divergent
C) homologous
Eliminate
D) vestigial
Answer: Option A) convergent.
Explanation:
Convergent evolution is a type of evolution in which the organisms evolve independently and attain similar traits in order to adapt to similar environments even though they are not closely related.The similarity can be in terms of body forms, body color, organs, and adaptations.The structures formed due to convergent evolution are analogous structures that perform a similar function but have a different origin.So green and blue algae show convergent evolution as they look similar but are not closely related.Petroleum and natural gas form from _____.
Petroleum and natural gas are created from the remains of ancient marine microorganisms, such as plankton, that were buried under sediments on the ocean floor and subjected to high heat and pressure over millions of years, leading to the formation of these nonrenewable energy sources.
Planktons once dead, sank to the seafloor and got buried in sediments. Due to lack of oxygen, their decomposition was limited, allowing them to be preserved. Over millions of years, these organic materials were subjected to high temperatures and pressure as they were buried deeper into the Earth's crust. This process transformed their remains into the hydrocarbons that make up oil and natural gas. The hydrocarbons were then often mobilized from their original location and became concentrated in geological formations that can act as reservoirs.
The liquid component of this process is known as oil, while the gaseous part is primarily natural gas, which is predominantly methane (CH4). These fossil fuels are considered nonrenewable energy sources and are used by humans at a rate much faster than they were formed.
Which compound is a metabolic intermediate of the light-independent reactions in photosynthesis? a. ATP b.3-PGA c.RuBP d.NADPH
Answer:
The correct answer will be option-B
Explanation:
The light-independent reaction of the photosynthesis is also known as the Calvin cycle. The Calvin cycle is a cyclic set of reactions which generates the 6 carbon glucose molecule from the carbon dioxide and other molecules.
The cycle forms two molecules of three-carbon compounds called 3-phosphoglycerate or 3-PGA. The 3-PGA gets converted to another three-carbon compound called G3P. The conversion of 3-PGA to G3P gains energy from the ATP and NADPH produced from the light reaction of the photosynthesis.
Thus, Option-B is the correct answer.
These photographs show different types of eruptions. drag the name of the eruption type to the correct photograph.
Experiment 1: symmetry in common objects post-lab questions 1. safety glasses bilateral symmetry safety glasses have a bilateral symmetry because they are mirrored images of each side if they are cut exactly in the middle. 2. petri dish radial symmetry a pertri dish is radial symmetry as
Final answer:
Laboratory objects exhibit various types of symmetry, such as bilateral and spherical symmetry, which can be used to describe how these objects are uniform or can be divided into identical sections.
Explanation:
The types of symmetry displayed by common objects in a laboratory setting can describe how an object may be manipulated or divided into identical parts. Here's how symmetry in some common lab items can be described:
Safety Glasses: These typically display bilaterally symmetrical (mirror symmetry), meaning that they would look the same if split into left and right halves along the center.
Petri Dish: A petri dish displays spherical symmetry, looking the same from any angle around its center point.
Wash Bottle with Curled Straw: Due to the curled straw, this object does not exhibit perfect symmetry. However, the bottle itself may be considered to have cylindrical symmetry, depending on its design.
Top of a Chemical Bottle: The top of a chemical bottle often has cylindrical symmetry, appearing the same when rotated around the center axis of the cap.
Balloon: An inflated balloon can display spherical symmetry when it is perfectly inflated without any irregular bulges; however, this can vary with the shape of the balloon.
Understanding symmetry is important in many scientific contexts, including chemistry, where the symmetry of molecules can influence their properties and reactions.
Enzyme which seals dna fragments together
b. chemical mutagen
c. type of mutation that produces a reading frameshift
d. substance which induces change in dna bases
e. method by which dna is copied at cell division f. a change in dna base sequence g. procedure to screen chemicals for mutagenic properties h. closed circular dna, with few genes, non-essential to the cell i. chemicals produced by bacteria which kill other bacteria
Any change in allele frequencies in a gene pool is
Which of the following statements is true? Friction works in the direction opposite of motion. Lubrication can be used to increase friction. Only large masses exert gravitational force. Air resistance is greatest for objects with small surface areas.
Which items in this image are electrically conductiv
What two ways in which a young person can learn more about a career in animal science?
Final answer:
A young person can learn about animal science through engaging in independent studies and gaining direct experience with volunteering, internships, or job shadowing. Additionally, participating in interest groups and conducting field studies are valuable for exploring the field.
Explanation:
Two ways in which a young person can learn more about a career in animal science are through independent studies and gaining practical experience. Independent studies allow students to investigate a science-related topic by activities such as making films or conducting polls, and interacting with their local environment to observe animal and plant life. Gaining practical experience could involve volunteering, job shadowing, or internships where students work alongside professionals and learn directly about the career field. Volunteering at places like animal shelters can provide direct experience and networking opportunities. Moreover, seeking out a researcher at a nearby college or institution through a science teacher or guidance counselor can offer valuable insights into the field.
Another valuable approach is to join interest groups or professional organizations related to animal science. Such groups provide opportunities to network, share information, and stay updated on the latest developments in the field. Finally, hands-on projects like conducting an Animal Behavior Field Study can help students comprehend how animals interact within their environment, thereby deepening their understanding of animal science.
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A ______ is a stem growing from a plant that periodically produces new stems and leaves on one side and roots on the other.
a)mitospore
b)rhizome
c)multiple fussion
d)stolon
An organism's genomic dna is analyzed and found to contain 22% thymine. what percentage of that organism's dna is guanine? 44% 22% 28% 78% 56%
All diabetic patients with hyperlipidemia should be treated with:
For a lab assignment, you are presented with a fungus and are asked to observe and draw conclusions about its reproductive cycle. During the first hour you notice about 10% of your sample has produced dust-like spores at the tips of its hyphae. After 8 hours, 90% of the sample is producing the spores. You conclude that
Answer:
The conclusion from the following experiment is that the fungus is undergoing Asexual mode of reproduction.
Explanation:
The fungus has two types of reproduction i.e. The sexual cycle of reproduction and the Asexual cycle of reproduction.
The Asexual reproduction is carried out by spores. These spores are formed inside the sporangium. They are located either inside or at the tips of the hyphae. These spores are dust like in nature.
So the experimental fungus is undergoing Asexual mode of reproduction.
What are your thoughts on human-made protective structures and beach-nourishment projects? Are they worth the time, money, and ecological harm? Discuss at least one benefit and one drawback of each of these human attempts to counteract natural shoreline process.
The production of pink flowered plants from a cross between a red flowered plant and a white flowered plant is an example of
Answer:
incomplete dominance
Explanation:
I just did it on USA test prep.
When the nurse researcher conducts an electronic literature search, the search yields more than 7000 citations for the topic. the researcher should make which of these interpretations of the finding?
What other kinds of cues might be reliable indicators for predator presence?
Predator scents, warning cries, and marks are cues that might be reliable indicators for predator presence.
Further Explanation:
The change in a population can be decreased due to the gene flow and due to an increase in the number of predators. Thus, the genetic variation increases due to a decrease and increase in predators and food respectively. To determine the presence of predator is very necessary to safeguard them. There are many cues and signs which indicate the existence of predators. Some of them are:
Marks of predators Scent of predators
Animal usually secrete hormone that helps in determining the presence of predator. Also, warning cries of predators indicates the existence of them. Movement of predators can easily sense by the individual. Predators' habitat can also give insight if they still live there or not. Markings on the surroundings can also help in determining the activity and presence.
Learn more:
Learn more about the Graafian follicle https://brainly.com/question/4189307 Learn more about the human sperm and egg cells https://brainly.com/question/1626319 Learn more about the female reproductive tract https://brainly.com/question/9813796Answer Details:
Grade: High School
Subject: Biology
Topic: Ecology
Keywords:
Predators, presence, cues, activity, sign, marks, scent, animal, cry, warning, hormone, decrease, increase, movement, genetic variation, habitat.
which best describes autolysis
Jeremy's trainer should have taken a physiology class. If he had, he would know that the use of steroids (in addition to other problems) actually increases_____________________, which is counterproductive to improving bone density.
The answer is Parathyroid Hormone (PTH). Steroids reduce calcium levels in the blood. This results in activation of the parathyroid hormone that is essential in the metabolism of calcium in the blood. PTH induces reabsorption of calcium from bones to restore homeostasis Ca2+ levels in the blood hence causing osteoporosis. Osteoporosis causes an increased risk of bone fractures.
Which of the following best summarizes how hormone levels are controlled?
Answer:
its a feedback loop i am doing the test right now and i have my notes and its right
Explanation:
i have it on my test it is right
Different types of cells within an organism ______.
A.Do not have any function
B.Can Survive on their own
C.Server a different Function
D.Are all the same
11Points No Brain :p
A patient who has raynaud's disease will begin taking an alpha-adrenergic blocker. the patient asks the nurse how the drug works to treat symptoms. the nurse explains that alpha-adrenergic blockers treat raynaud's disease by causing orthostatic hypotension. reflex tachycardia. decreased peripheral vascular resistance. vasodilation.
How can you determine the genotype of a plant that displays the dominant form of a trait?
do a testcross with a homozygous recessive plant --------- Gradpoint
Although a star might look brighter than the Sun, a comparison of its ______________ magnitude might help prove that they have the same real brightness.
Answer:
Although a star might look brighter than the Sun, a comparison of its Absolute magnitude might help prove that they have the same real brightness.
Explanation:
Apparent magnitude measures the brightness of a celestial body from the Earth at its actual position.
Absolute magnitude is the apparent magnitude of the same body when it is at a distance of 10 parsecs.
A star might look brighter than the sun but actual comparison of the brightness can be done by comparing the absolute magnitudes of the two stars.