Answer:
D. Some traits in certain embryos disappear as the embryo develops
Explanation:
I don't know how I would explain it, but I can list some of the things that disappear such as... Gill slits, and tails. Hope this helped :D
Answer:
D. Some traits in certain embryos disappear as the embryo develops.
Explanation:
Embryology is the study of embryos. Embryos of different animals such as mammals, birds, fish, reptiles etc. look alike that is they are very similar. Many traits of one type of animal appear in the embryo of another type of animal.
Select the factors described in the video that the body works to maintain homeostasis.
Group of answer choices
water concentration
temperature
pH level
skin color
eyesight
Answer:
water concentration, temperature and pH level.
__________ is weather averaged over a long period of time.
Question 2 options:
A. temperature
B. air pressure
C. climate
D. humidity
Answer:
no
Explanation:
no
The weather that is averaged over a long period of time is the climate that is present in Option C because climate is a prolonged period of weather that is taken into consideration, and the regions are specified for the climatic condition.
What is the climate?Weather is affected by various factors, such as temperature, humidity, etc., and that is not permanent for years, but it is temporary because when there is a rainy day, the weather condition of that place is more cold, while in a place where there is a high temperature, the weather becomes dry for that region. Climate is a weather condition that lasts for long periods of time, such as 20 or 30 years, and depending upon the climate, different ecosystems are considered.
Hence, the weather that is averaged over a long period of time is the climate that is present in Option C because climate is a prolonged period of weather that is taken into consideration, and the regions are specified for the climatic condition.
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How does crop rotation benefit the soil?
A)makes no difference to the soil
B)helps return nutrients to the soil
C)it doesn't - it depletes the soil of nutrients
Answer:
B) Helps return nutrients to the soil
How do scientists exploit the plasmids in bacteria?
A) They multiply the cells.
B)They use them as vectors.
C)They express plasmids.
D)They nullify their effects.
Answer:
C
Explanation:
Primers can be exploited for sequence verification of plasmids
Answer: B: They use them as Vectors.
Explanation:
I took the test.
What condition is caused by carbon dioxide, methane, and water vapor trapping heat in the Earth's atmosphere?
A biomagnification
B greenhouse effect
C photosynthesis
D transpiration
The condition that is caused by carbon dioxide, methane, and water vapor trapping heat in the Earth's atmosphere is known as the greenhouse effect. Thus, the correct option is B.
What is the Earth's atmosphere?The earth's atmosphere may be defined as the significant presence of a layer of various gases that surrounds the whole planet. It is known that the Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases.
Carbon dioxide, methane, and water vapor are considered greenhouse gases that ultimately capture the heat radiations from the sun and liberate the earth's atmosphere. As a result of this, the average temperature of the earth's surface has gradually increased for four to five decades.
This is all known as the greenhouse effect. The Greenhouse effect may be defined as the phenomenon of keeping the earth warm due to the presence of certain gases in the atmosphere that captures heat from the sun.
Therefore, the condition that is caused by carbon dioxide, methane, and water vapor trapping heat in the Earth's atmosphere is known as the greenhouse effect. Thus, the correct option is B.
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Name the vestigeal part of human alimentary canal?
Why does DNA replication occur before mitosis and cell division?
Answer:
Explanation:
DNA replication needs to occur because existing cells divide to make new cells, so that the DNA needs to be copied before cell division so that each new cell receives a full set of instructions.
DNA replication - It is the process of producing two identical copies of DNA molecules from one original DNA molecule.
The cell cycle is the series of events that lead to a cell's genome duplication and final division into two daughter cells.
It consist of two main phases - Interphase and M phase
DNA replication occurs at the interphase during S phase of the cell cycle.
Mitosis begins after interphase.
DNA replication occurs before mitosis and cell division so that each newly formed daughter cell receive full set of chromosomes as of parent cell in their nucleus. DNA contains instructions that helps the newly formed cells to operate properly.
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Leukemia is cancer of the body’s blood-forming tissues. A leukemia patient’s bone marrow produces abnormal white blood cells which do not function properly. A pharmacology company is trying to develop drugs to regulate the production of abnormal white blood cells. Which of the following processes is most likely affected by this new drug?
Cellular respiration
Transport of molecules
Cell differentiation
Cellular division
Answer:
Cellular division
Explanation:
it's because abnormal production (mutations) causes leukemia
cellular division is most likely affected by this new drug in case of leukemia. Thus option D is correct.
What is leukemia?Leukemia is a cancer related abnormal division in blood or blood-forming cells. It is other wise known as blood cancer.
The exact cause is not known, major risk factors are radiation exposure, chemotherapy for cancer, smoking, family history of leukemia, and exposure benzene.
Leukemia cells, do not clump to form tumor, due to this leukemia is not diagnosed through imaging tests.
Common symptoms include pain in the bones, swollen lymph,, bleeding and bruising nodes, feeling weak, fevers or night sweats etc.
Leukemias can be acute or chronic.
On the basis of cell type affected four types of leukemia observed such as acute lymphoblastic leukemia (ALL), chronic lymphocytic leukemia (CLL), acute myelocytic leukemia (AML), and chronic myelocytic leukemia (CML).
Thus option D is correct.
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A major disturbance that almost caused a total collapse, but that the ecosystem was able to recover from eventually?
Answer:
corona
Explanation:
2020 bad
The advantage of using an inclined plane is to reduce the-
a. Force needed to lift heavy objects
b. Time needed to load many objects
c. Work being done while moving objects
d. Amount of friction affecting the objects
Answer:
a
Explanation:
it allows you to go up but not to hard
Constructing a Device to Regulate the
Release of Energy - Student Guide
Assignment Summary
In this project, you will design, construct, test, and modify a device that releases thermal energy by
chemical processes. You will be provided specific materials by your instructor, and will use these
materials to design a device that releases energy to the environment. Next, you will build the device and
test it by gathering temperature data. Finally, you will use your data to evaluate the design and decide
how to improve your device.
Answer:
Thermal Energy and Chemical Reactions
The device controlled the activation as shown by the water holding room temperature for 15 seconds until activation by crushing the pills. The temperature rose 30° over two minutes,showing a measurable exothermic reaction from the Calcium Chloride dissolving in the water.
Pour 5mL water in a quart bag
Place Thermometer in the bag to make contact
Fill two gelatin 000 capsules with 1 gram of Calcium Chloride
Place capsules into the bag
Wait 15 seconds to crush the capsules while they are submerged in the water
-Temperature
0 seconds 75 degrees
15 seconds - Activation 75 degrees
30 seconds 85 degrees
60 seconds 95 degrees
90 seconds 104 degrees
120 seconds 105 degrees
Conclusion: During a reaction, thermal energy from the environment is converted into chemical energy stored in the products.
Answer:
Thermal energies & Chemical reactions
Explanation:
Thermal Energy and Chemical Reactions
The device controlled the activation as shown by the water holding room temperature for 15 seconds until activation by crushing the pills. The temperature rose 30° over two minutes,showing a measurable exothermic reaction from the Calcium Chloride dissolving in the water.
Pour 5mL water in a quart bag
Place Thermometer in the bag to make contact
Fill two gelatin 000 capsules with 1 gram of Calcium Chloride
Place capsules into the bag
Wait 15 seconds to crush the capsules while they are submerged in the water
-Temperature
0 seconds 75 degrees
15 seconds - Activation 75 degrees
30 seconds 85 degrees
60 seconds 95 degrees
90 seconds 104 degrees
120 seconds 105 degrees
Final Conclusion: During a reaction, thermal energy from the environment is converted into chemical energy stored in the products.
According to the Law of niches two generations can't????
Answer: it can’t coexist if they occupy the exactly the same niche
Explanation:
Which theory suggests all living things are made up of a cell or cells? cell theory organismal theory
Answer:
Cell theory
Explanation:
The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.
The series of predictable changes that occurs in a community over time is called
a
climate change.
b
population growth.
c
climax community.
d
ecological succession.
Answer:
D
Explanation:
What causes the isopods to move to a specific area?
Answer:
Effects on biodiversity at different scales, geographical regions, and environments. Mostly humidity and temperature.
Explanation:
Isopod distribution is tightly connected to available habitats and habitat features at a fine spatial scale, even though different species may exhibit a variety of responses
two poverty alleviation programmes
Answer:
wage employment programmes
food security programmes
PLEASE PLEASE PLEASE HELP HURRYYYY
dear friend, make it into sentence I will share my opinions to it in point wise:
1) Rate of photosynthesis will be high
2) water loss is very high
3) blocks the sunlight
4)competes for water.. broad would more
The 6 kingdom system of classification enables biologists to group organisms according to
Answer:
The correct answer is -a common characteristic (in a logical manner)
Explanation:
The six kingdom classification is given by Woese et al 1977, the basis of this classification was the shared characteristic of organisms. These common characteristics include more than one character such as cell type ( prokaryotic or eukaryotic), type of nutrients (autotrophs, heterotrophs), type of reproduction, homologous or analogous organs, habitat, and many more.
All these traits or characters helped in grouping organisms in a logical manner and is one of the most acceptable classifications.
Thus, the correct answer is -a common characteristic (in a logical manner)
which of the following statements are true?
A. Flavr Savr tomatoes are still commercially successful.
B. A large percentage of US crops are currently genetically engineered.
C. Glyphosate kills all plant life, even genetically altered plants.
D. None of these are true
What is seeditis? Please help
Answer:
Seeditis is a fast, easy to use payment system built on the Tron Network. It seeks to give power back to content creators by facilitating a decentralized economy using crypto payments. ... In under a week since launching on Twitter, it rocketed to over 10MM TRX and 50K+ transactions!
Explanation:
Answer:
Seedit is a fast, easy to use payment system built on the Tron Network
Explanation:
Why would it be important to understand what controls the number and types of species in an ecosystem?
•THERE’S ALSO OTHER QUESTIONS IN THE PIC (if you could answer them it would be appreciated)
Answer:The short film Some Animals Are More Equal than Others: Trophic Cascades and Keystone Species opens by asking
two fundamental questions in ecology: “What determines how many species live in a given place? Or how large
can each population grow?” The film then describes the pioneering experiments by Robert Paine and James Estes,
in the 1960s and 1970s, which started to address them. Paine’s experiments on the coast of Washington state
showed that the starfish is a keystone species, having a disproportionately large impact on its ecosystem relative
to its abundance. Estes and colleague John Palmisano discovered that the kelp forests of the North Pacific are
indirectly regulated by sea otters, which feed on sea urchins that consume kelp. The presence or absence of sea
otters causes a cascade of direct and indirect effects down the food chain, which in turn affect the structure of
the ecosystem. These early experiments inspired countless others on keystone species and trophic cascades in
ecosystems throughout the world.
Explanation:
HAND TYPED!!
Damage to the auditory nerve or to the hair cells in the inner ear results in
A. Ménière's disease
B. sensorineural hearing loss
C. conductive hearing loss
D. otitis media
Please select the best answer from the choices provided
Answer:
B. sensorineural hearing loss
Explanation:
Damage to these hair cells results in decreased hearing sensitivity, and because the inner ear hair cells cannot regenerate, this damage is permanent.
Damage to the auditory nerve or to the hair cells in the inner ear results in sensorineural hearing loss. Thus, the correct option is B.
What is the Auditory nerve?The auditory nerve may be defined as a cluster of nerve fibers that transport hearing information between the cochlea and the brain.
When the auditory nerve or hair cells are damaged due to any injury or other reasons, it can lead to a reduction in hearing sensitivity.
The cells of this region are unable to regenerate, and hence this damage will remain permanent, and sensorineural hearing loss will result in this scenario.
Therefore, the correct option for this question is B.
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what term is used to describe a group of interacting and interdependent elements forming a complex whole A. ecosystem B . system C.biotic factor D.abiotic factor
Answer:
C
Explanation:
Why would dark moths have an advantage?
Answer:
To study these moths, Dr. Kettlewell placed light and dark moths on the trunks of trees where he could observe them. The same birds would find the dark moth twice as often if the bark on the tree was light. This supported the idea that dark moths had a survival advantage in a dark forest.
5. What is another possible analogy that could be compared with the structure and function of a cell?
Answer:
hope it helps you❤❤❤
Explanation:
The structure and function of an airport and control tower are compared to the structure and function of a cell.
The table depicts characteristics of five prokaryotic species (A-E). Use the information in
the table to answer the following question:
Trait
Species A
Species B
Species
Species D
Plasmid
R
None
F
None
Gram
Staining
Results
Variable
Variable
Negative
Negative
Nutritional
Mode
Chemoheterotroph Chemoautotroph Photoautotroph Chemoheterotrop
Aerobic
Specialized methanotroph
Metabolic (obtains carbon
Pathways and energy from
methane)
Anaerobic
methanogen
Anaerobic
nitrogen
fixation and
aerobic
photosystems
and 11
Anaerobic lactic
acid fermentation
Thylakoids
Pili
Other
Features
Internal
Membranes
Fimbrae
Which two species in the table minimizes competing interactions by compartmentalizing
their metabolic processes?
112
Answer: D
Explanation: ) The predatory bacterium Bdellovibrio bacteriophorus drills into a prey bacterium and, once inside, digests it. In an attack upon a Gram-negative bacterium that has a slimy cell covering, what is the correct sequence of structures penetrated by B. bacteriophorus on its way to the prey's
which I true of the rock layers shown below
Answer:
C
Explanation:
The fossil can get lifted due to water and other components
What’s the relationship between a front and a formation
Answer:They have the exact relationship.
what is the function of the a transport protein?
Answer:
Transport proteins act as doors to the cell, helping certain molecules pass back and forth across the plasma membrane, which surrounds every living cell. In passive transport molecules move from an area of high concentration to an area of low concentration.
Explanation:
Changing the shape or morphology of the mitochondrial inner membrane can change the efficiency of mitochondrial function.
Which of the following outcomes will most likely result from a change in the shape of the mitochondrial inner membrane from a highly folded surface to a smooth, flat surface?
Since, the options have not been given the question is incomplete the complete question is as follows:
Changing the shape or morphology of the mitochondrial inner membrane can change the efficiency of mitochondrial function.
Which of the following outcomes will most likely result from a change in the shape of the mitochondrial inner membrane from a highly folded surface to a smooth, flat surface?
A. Mitochondria will become more efficient because the inner mitochondrial membrane will become more permeable to ions.
B. Mitochondria will become more efficient because the total volume of the mitochondria will increase.
C. Mitochondria will become less efficient because the inner mitochondrial membrane will become less permeable to large molecules.
D. Mitochondria will become less efficient because the surface area of the inner mitochondrial membranes will decrease.
Answer: D. Mitochondria will become less efficient because the surface area of the inner mitochondrial membranes will decrease.
Explanation:
Mitochondria is called the power house of the cell as it produces energy by the oxidation of food in the form of adenosine triphosphate or ATP. The inner mitochondrial membrane comprises of numerous folds which are called cristae which increases the surface area for the chemical reactions necessary for the production of energy. If the folding increases the surface area for energy production will decrease as the surface area for chemical reactions will decrease. Thus the efficiency of mitochondria will decrease.
If the mitochondrial inner membrane becomes flat or smooth surface then this also decreases the surface area for chemical respiration, thus in this case too the efficiency of mitochondria will decrease.
