How can scientists use anatomical structures and embryology as evidence of how organisms evolved?
Why do you think Lavoissier exposed a mouse to the gas he collected from mercury?
Answer:
Thus, in a confined space, candles were extinguished and mice died. Priestley believed his “pure air” enhanced respiration and caused candles to burn longer because it was free of phlogiston. For this reason, he called the gas that he obtained from decomposing mercury calx dephlogisticated air.
Explanation:
What is the answer to this
This is for keishaburr13 only please no one else answer this thank you
Answer:
sorry. I can't not answer this question now cause i already submitted it. i did not mean to.
An individual that is heterozygous for flower color and for height (PpTt) is test crossed. What is the phenotypic ratio of the offspring
Answer:
9:3:3:1
Explanation:
This type of crossing that involves two characters is referred to as dihybrid crossing. Generally, when there is a dihybrid crossing for heterozygous genes for both parents, the phenotypic ratio is usually 9:3:3:1 as shown in the figure in the attached document below.
Assuming the colour is White (P) and Black (p) and the
Height is Tall (T) and short (t)
The possible phenotypes will be in the ration
9 - White and Tall
3 - White and short
3 - Black and Tall
1 - Black and short
It should be noted that phenotypic ratio (phenotype) describes the outward appearance (what can be see physically) and not the genetic make-up. Thus, where there is a dominant character like P or T, the recessive characters are not considered to have been expressed.
Which of the following is most likely to occur due to severe winds during a hurricane
You are conducting an experiment to discover which were mosquito repellent works best.
Independent variable-
Dependent variable-
Answer: I think
Dependent: The repellent
Independent: The Mosquitos
Arthritis and other similar diseases can cause a narrowing of the spinal foramen. The images below show a healthy spine and a spine with a narrow foramen.
Which symptom would an individual with a narrow foramen most likely experience?
A.
increased flexibility from the constriction of muscle
B.
poor posture from loss of tendon attachment sites
C.
back pain from the compressed nerves
D.
lower blood pressure from increased blood flow
Answer:
The symptom most likely to be experienced by an individual with a narrow spinal foramen is back pain from the compressed nerves, according to the image.
Explanation:
One of the consequences of inflammatory processes affecting the vertebrae is the loss of the normal configuration of these bone structures.
The narrowing of the vertebral foramen as a result of arthritis, among other causes, can compromise the emergence of peripheral nerve roots, producing pain as a symptom. Long-term root compression can also cause compromised peripheral nerve function, such as paresthesias, numbness and paralysis.
An individual with a narrow spinal foramen will have back pain, due the compressed nerves, as a result of this condition.
The other options are not correct because they are not direct consequences of the narrowing of the spinal foramen.
Answer: Back pain from the compressed nerves.
Explanation:
A person with undiagnosed diabetes had the following symptoms. One of the symptoms of diabetes is thirst. Which of the following best explains the symptom
Answer:
the symptom isnt diabetes thats the diagonistic
Explanation:
What part of the bone produces blood?
Answer:
Bone marrow.
Explanation:
During nitrogen fixation, nitrogen gas in the atmosphere is converted into a form that ____ can use. a plants b animals c humans d all of the above
Answer:
A. Plants
Explanation:
Nitrogen fixation is one of the processes involved in the NITROGEN CYCLE. It is the process whereby atmospheric nitrogen (N2) is converted into nitrogenous compounds such as ammonia, nitrates by certain nitrogen-fixing bacteria such as AZOTOBACTER.
The nitrogenous compounds which nitrogen fixation converts N2 into are in a form that PLANTS can use. Plants cannot utilize nitrogen gas, hence, the importance of this conversion into a form that plant can make use of.
For which object would a geologist use carbon-14 dating to determine age?
O Animal bones
O Fossilized plants
O Sedimentary rocks
O Volcanic rock
Answer:
O Animal bones
Explanation:
In the upper atmosphere, Radioactive Carbon-14 is usually produced. In plants, it is incorporated by photosynthesis into organic molecules, later ingested by hetrotrophs.
It is used for the radiocarbon dating process of fossils and formations. Because of the unstable nature of the isotope used and the consistent rate of decay, radioactive isotope dating is an important way of detection in organic material. Here, this is a the measure of the time taken for half of the radioactive material to break down- this is called the half life for Carbon this is 5,730 years.
In animals, the Carbon-14 ingested is eventually incoporated into their bones. After they die, bones become dessicated, and the Carbon 14 is slowly broken down to become Nitrogen.
Answer:
a animal bones
Explanation:got it rite on edg
2020
recent mass extinction
The image above is of a microscope specimen In your answer explain the following:
• What tissue this is
what body system it belongs to
• What types of cells are shown
• explain at least one function of one cell shown
Answer:
I can't see the picture of the cell,!
PLS HELP I’m not sure which one it is lol
Answer:
Option B)
Explanation:
A moon is a celestial body that revolves around a planet.
The others are wrong because, a planet orbits around the sun, not the sun orbiting the planet.
A meteor does not have a fixed orbit, and asteroids orbit around the star near it, in our case, the asteroid belt orbits the sun.
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Rocks, streams, chipmunks, and wildflowers make up a(n)
Answer:
Rocks, streams, chipmunks, and wildflowers make up a(n) ecosystem.
Loss of what component in the extracellular matrix would result in lack of adhesion?
O A. Elastin
OB. GAGS
C. Collagen
OD. Fibronectin
Answer:
c. collagen
Explanation:
because multicellularity evolved independently in different multicellular lineages
The extracellular matrix is composed of many proteins with different functions. One of them is Fibronectin. The loss of Fibronectin in the extracellular matrix would result in a lack of adhesion.
What is the connective tissue?The connective tissue is composed of cells notoriously separated by the abundant extracellular matrix.The different connective tissues differ from each other in the properties of their matrix.What is the extracellular matrix?The extracellular matrix is produced by fibroblasts, which is a predominant cell population. The extracellular matrix has fibrillar proteins of different nature such as collagen, fibrillin, and elastin that determine tension properties. There are also adessive proteins such as fibronectin and laminin.These proteins are included in a medium containing water, salts, GAGs, proteoglycans, glycoproteins, and other macromolecules. All of them confer turgidity and facilitate diffusion.According to this framework, the loss of Fibronectin in the extracellular matrix would result in lack of adhesion.
You can learn more about the extracellular matrix at
https://brainly.com/question/22691806
https://brainly.com/question/10158195
Which two features of igneous rocks are determined by their cooling rate?
color and shininess
shininess and hardness
hardness and crystal size
crystal size and rock texture
On Edge 2020
Answer:
Crystal Size and Rock Texture
Explanation:
Extrusive rocks are also known as volcanic rocks. Igneous rocks are classified according to their texture and mineral or chemical content. The texture of the rock is determined by the rate of cooling. The slower the rock cools, the larger the crystals form.
The two features of igneous rocks are determined by their cooling rate are Crystal Size and Rock Texture. Thus, option D is correct.
What are rocks?Rocks has been known as volcanic rocks. Igneous rocks has been classified just according to their texture including the mineral or the chemical content. The texture of the rock has been determined by the rate of cooling. The slower the rock cools, or the larger the crystals form.
Bioclastic rocks are wholly or partially comprised of compacted plant or animal remains. Bioclastic rocks will often have fossils within them upon discovery. Most sedimentary rocks contain either quartz (siliciclastic rocks) or calcite (carbonate rocks).
Bioclastic sedimentary rocks are clastic sedimentary rocks, where the broken pieces making up all or part of the rock happen to be pieces of biological life forms- most typically, these are shelly fossil fragments. Most bioclastic sedimentary rocks are marine, mostly because very few land animals leave enough remains to survive being transported.
Therefore, The two features of igneous rocks are determined by their cooling rate are Crystal Size and Rock Texture. Thus, option D is correct.
Learn more about rocks on:
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Which of the following is NOT a type of transportation used in plants?
Individual cells
O Root to stem
O Cell to cell
Transport of sap within the xylem and phloem
Answer:
Transport of sap within the xylem and phloem
Explanation:
After photosynthesis sugars move through the mesophyll via plasmodesmata; here, they reach phloem sieve tube elements in vascular bundles. From the STEs, they are actively transported against their concentration gradient to the phloem.
When the sugars enter the phloem, water moves across from the xylem tube into the phloem. This increases the water pressure inside the phloem, causing the sap to move towards sinks.
Thus translocation of sap only involves the phloem.
T/F Oxygen is not present during anaerobic respiration
A. True
B. False
Answer: True
Explanation: Glycolysis, which is the first step in all types of cellular respiration is anaerobic and does not require oxygen. ... However, if oxygen is not present, some organisms can undergo fermentation to continually produce ATP.
Answer:
False
Explanation:
Cellular Respiration can occur both aerobically (using Oxygen) and anatomically (without Oxygen)
5. A cross is made between a pea plant that has constricted pods (a recessive trait; smooth is dominant) and is heterozygous for seed color (yellow is dominant to green) and a plant that is heterozygous for both pod texture and seed color. Construct a Punnett square that depicts this cross. What are the predicted outcomes of genotypes and phenotypes of the offspring
Answer:
Genotypes:
- 1/8 SsYY
- 2/8 SsYy
- 1/8 ssYY
- 2/8 ssYy
- 1/8 Ssyy
- 1/8 ssyy
Phenotypes: 3:3:1:1
- 3/8 smooth-pod and yellow-seeded (SsYY + SsYy)
- 3/8 constrict-poded and yellow-seeded (ssYY + ssYy)
- 1/8 smooth-pod and green-seeded (Ssyy)
- 1/8 smooth-pod and green-seeded (ssyy)
Explanation:
Available data:
The two forms of the diallelic gene for pod texture are constricted and smooth. The dominant allele S expresses smooth pod The recessive allele s expresses constricted podThe two forms of the diallelic gene for seed color are yellow and greenThe dominant allele Y expresses YellowThe recessive allele y expresses greenCross: a pea plant that has constricted pods and is heterozygous for seed color with a plant that is heterozygous for both pod texture and seed color.
Parental) ss Yy x SsYy
Gametes) sY sy sY sy
SY Sy sY sy
Punnet square)
sY sy sY sy
SY SsYY SsYy SsYY SsYy
Sy SsYy Ssyy SsYy Ssyy
sY ssYY ssYy ssYY ssYy
sy ssYy ssyy ssYy ssyy
F1) Genotypes:
- 2/16 = 1/8 SsYY
- 4/16 = 2/8 SsYy
- 2/16 = 1/8 ssYY
- 4/16 = 2/4 ssYy
- 2/16 = 1/8 Ssyy
- 2/16 = 1/8 ssyy
Phenotypes:
- 6/16 = 3/8 smooth-pod and yellow-seeded (SsYY + SsYy)
- 6/16 = 3/8 constrict-pod and yellow-seeded (ssYY + ssYy)
- 2/16 = 1/8 smooth-pod and green-seeded (Ssyy)
- 2/16 = 1/8 smooth-pod and green-seeded (ssyy)
How does the evidence support the central idea that cane sugar helped lead to the abolition of slavery? The evidence explains that modern technology triggered the shift from cane sugar to beet sugar. The evidence reveals that sugar barons in Cuba and Russia freed enslaved people and serfs. The evidence reveals that the author's family members were hardworking serfs on Russian farms. The evidence details how the modern technologies were used for large-scale sugar planting.
Answer:
B
Explanation:
took the test
When molecules are exposed to heat, they
A
stop moving completely.
B
begin to slow down.
C
start to move faster.
D
explode.
Answer:
C
Explanation:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.
The movement of molecules through cell membranes is an extremely important biological process called _____
Answer:
Omggggg i know this oneeeeee. its diffusion i learned this last yearrrrrr. your welcome for whoever u are;)
Explanation:
One test currently done to positively identify individuals infected with SARS-CoV-2 is Group of answer choices to identify the viruses under an electron microscope ultracentrifuge blood samples to concentrate enough viruses so that they can be looked at using a light microscope. real time RT-PCR all of the above
Answer:
The real-time RT-PCR
Explanation:
Due to technical problems, you will find the complete explanation as an attached file.
8 What is the complimentary mRNA sequence to the DNA sequence A-T-T-G-C-A.
Answer:
T-A-A-C-G-T
Explanation:
mRNA → Polypeptide
In order to translate an mRNA sequence into a polypeptide chain, it is important to establish the correct reading frame
The mRNA transcript is organised into triplets of bases called codons, and as such three different reading frames exists
An open reading frame starts with AUG and will continue in triplets to a termination codon
A blocked reading frame may be frequently interrupted by termination codons
Once the start codon (AUG) has been located and reading frame established, the corresponding amino acid sequence can be deduced using the genetic code
Example: (mRNA) GUAUGCACGUGACUUUCCUCAUGAGCUGAU
Answer: (codons) GU AUG CAC GUG ACU UUC CUC AUG AGC UGA U
1
درکه
1
Which of the following effects can occur because of the high surface tension of water?
A. Organisms can resist temperature changes, although they give off heat due to chemical
reactions
| B. A raft spider can walk the surface of a small pond
C. Sweat can evaporate from the skin, helping to keep people from overheating
D. Lakes cannot freeze solid in winter, despite low temperatures
Answer:
D.Lakes cannot freeze solid in winter,despite low temperatures
The effects can occur because of the high surface tension of water is - B. A raft spider can walk the surface of a small pond
The properties of water molecules such as surface tension, cohesion, adhesion are the attraction force between water molecules that causes the sticking of the water molecules. It takes place due to hydrogen bonding between hydrogen and oxygen atoms.
Surface tension is a type of this property where water molecules remain attached together.
Surface tension is:
Tightness across the surface of the water.Attraction force work between molecules due to polaritySmall insects can skate or walk on water such as raft spiders due to surface tensionCauses raindrops to form round beads when they fall.Thus, the effects can occur because of the high surface tension of water is - B. A raft spider can walk the surface of a small pond
Learn more about the properties of water:
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What pathway uses fat reserves to produce ATP?
aerobic respiration
anaerobic respiration
creatine phosphate
In which type of exercise would fat reserves be used to create ATP?
a strenuous, short hike with many steep climbs
a moderate, but long hike over gently rolling hills
Answer:
The first one is A: aerobic respiration
The second one is B: a moderate, but long hike over gently rolling hills
Explanation:
Got them right on edge 2021
Gregor Mendel studied pea plants to determine the patterns of inheritance. What is not a reason Mendel used pea plants in his experiments? Check all that apply. They reproduced sexually. They were drought resistant. They had traits that were easy to observe. They only had two traits to study.
Answer:
B and D
Part 2 is C
Explanation:
on edge 2020
The following are not reasons Mendel chose pea plants for his experiments:
They were drought resistantThey only had two traits to study.GREGOR MENDEL INHERITANCE:Gregor Mendel is regarded as the Father of genetics because of the immense role he played in the inheritance of traits.Mendel chose pea plants for his experiment due to certain reasons, which include the following:
Easy to grow in the garden.The flowers of pea plants are hermaphrodite.Easy to obtain pure breed plant through self-fertilizationThey possessed easily observable traits. They have excellent disease resistanceTherefore, the following are not reasons Mendel chose pea plants for his experiments:
They were drought resistantThey only had two traits to study.Learn more about Gregor Mendel experiment at: https://brainly.com/question/910732
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Answer:
water
Explanation:
The molecules that are used up in photosynthesis are water and carbon dioxide.
Answer:
D. Water
Explanation:
The molecule that is used up during this process is Water.