The sciatic nerve is the largest and longest nerve in the human body, originating at the base of the spine and running along the back of each leg into the foot. At its thickest point, it is about as wide as an adult thumb.
The right whale is an example of
A. a species that is recovering from being endangered
B. a species that failed to adapt to changes to its environment
C. a species that is almost gone because of the excessive pollution in its habitat
D. a species that has become too populous and threatens the survival other of species
Answer: I believe it's C
Explanation: edg 2021
The correct option is C.
Why do they call it a right whale?
The right whale got its name because it was the right whale to hunt—it moved slowly and would float after being killed. A North Atlantic right whale mother and calf were spotted off the U.S. southern coast by NOAA researchers during the 2020 breeding season.
How rare is a right whale?North Atlantic right whales have been listed as endangered under the Endangered Species Act since 1970. The latest preliminary estimate suggests there are fewer than 350 remainings, with fewer than 100 breeding females. The number of new calves born in recent years has been below average.
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A student is researching the inheritance patterns of different traits in chickens. She hypothesizes that red feathers are dominant over black, and the trait for crests are dominant over non-crested. She performs a test cross to confirm her hypothesis. To produce the F1 generation, she crosses two parents-- a chicken that is homologous for traits showing red and crested and a chicken that is homologous for traits showing black and non-crested. Which ratio best represents the phenotype of the F2 generation
9:3:3:1
1:1:1:1
2:2:1:1
16:0
Answer:
9:3:3:1
Explanation:
In this inheritance pattern, the ratio that best represents the phenotype of the F2 generation is 9:3:3:1. Thus, the correct option for this question is A.
What is a Phenotype?A phenotype may be defined as the mechanism of expressing genotypes in the form of traits. In more simple words, it is also characterized as the morphology or physiology which comes due to the combination of alleles.
If a trait of red feathers is denoted by R and the trait of black feathers is denoted by r, then R > r. Similarly, a trait of crests is denoted by C and the trait of non-crested is denoted by c, then, C > c.
Now, RRCC is crossed with rrcc, the F1 offspring have the genotype RrCc with the phenotype of red feathers with crests. Now, RrCc is selfed, it produces the ratio of 9:3:3:1. This is an example of a dihybrid cross.
Therefore, in this inheritance pattern, the ratio that best represents the phenotype of the F2 generation is 9:3:3:1. Thus, the correct option for this question is A.
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What organelle is a twin.
What are the nerve roots that are shaped like a horse's tail and that extend down from the end of the spinal cord?
Answer:
a. Cauda equina
Explanation: is correct
is this correct?.....
Answer:
yes it is :) I hope this helps:)
active transport moves mineral ions into root hair cells through cell membrane proteins. Explain how protein molecules move ions across a membrane during this process. (3marks)
Explanation:
Small and nonpolar (hydrophobic) molecules can freely pass through the membrane, but charged ions and large molecules such as proteins and sugars are barred passage.
Nonpolar and small polar molecules can pass through the cell membrane, so they diffuse across it in response to concentration gradients.
how long can you keep hard-boiled eggs in the refrigerator
Answer:
7 days
Explanation:
i found it out the hard way
Answer:
You can keep them up to seven days in the fridge.
Explanation:
There are two types of reproduction, sexual and asexual Sexual reproduction involves two parents, while asexual reproduction only involves one,
Sort the reproductive processes below according to whether they are asexual or sexual.
ITEM BANK: Move to Bottom
Creation of an egg
Creation of fruit
Mushrooms producing spores
Production of seeds
Stem cuttings of plants
Sexual
Asexual
Budding in yeast
drag and drop answer here
drag and drop answer here
Answer:
Creation of egg- Sexual
Creation of fruit - Sexual
Mushrooms producing sporea - Asexual
Production of seed - Sexual
Stem cutting - Asexual
Budding in yeast - Asexual
You need to prepare for an exam on mitosis. You search for models of mitosis to help you. What kind of model should you choose?(1 point)
a model that simply lists the steps of cell cycle
a model that shows the steps of meiosis
a model that illustrates how a cell divides into two identical cells
a model that illustrates the organelles of cells
Answer:
- A model that illustrates how a cell divides in two identical cells -
Explanation:
The process mitosis means the daughter cells dividing
so the only thing that actually makes sense is the model that shows the division not the steps of all cell cycles or organelles of cells!!
Also, if you taking the biology exam I have a little reminder for you.
!! YOU GOT THIS !!
Determine which situation could NOT be an example of interspecific competition.
A. Two organisms competing for food.
B. Two organisms competing for a mate.
C. Two organisms competing for water.
D. Two organisms competing over territory.
Answer: B. Two organisms competing for a mate
Explanation:
Which part of the mitochondrion contains the proteins that carry out oxidative phosphorylation?.
Answer:
Inner Mitochondrial Membrane
Explanation:
Oxidative phosphorylation takes place in the inner mitochondrial membrane, in contrast with most of the reactions of the citric acid cycle and fatty acid oxidation, which take place in the matrix.
· Water participates directly in the light reactions of photosynthesis by
a. donating electrons to NADPH.
c. accepting electrons from the electron
b. donating electrons to photosystem II. transport chains.
d. accepting electrons from ADP.
Which star is more massive than our Sun,but has a lower surface temperature?
(1) 40 Eridani B (3) Aldebaran
(2) Barnard's Star (4) Sirius
Answer:
The answer is not in the option, the answer is VY Canis Majoris
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6)
A student observes a cell under a microscope. The cell contains chromosomes that show up inside of a nucleus surrounded by an
envelope. Based on the infon nation here, the student was able to determine whether the cell was prokaryotic or eukaryotic. After
making the distinction, the student could assume the cell came from certain cell types. From which potential organism(s) was this
cell-derived? Select ALL that apply.
A)
plant cell
B)
animal cell
fungal cell
D)
bacterial cell
E)
methanogenic Archaea cell
2
The potential organism was derived from plant cell, animal cell and fungal cell.
Cell nucleus
The cell nucleus is the largest organelle found in the cytoplasm and it is present only in eukaryotic cells. It is in the nucleus that the chromosomes carrying the genes responsible for controlling cellular activities are found.
Whit this information, we can conclude that the potential organism was derived from plant cell, animal cell and fungal cell.
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what is the main difference between a biome and an ecosystem
An ecosystem is quite smaller than a biome and exists within a biome.
A biome refers to a large habitat ocupied by assorted fauna and flora. Biomes are classified based on abiotic conditions such as temperature, soil types, rainfall etc. An ecosystem is a self supporting unit in which materials and energy are exchanged within the system.
The difference between a biome and an ecosystem is that a biome is a collection of different ecosystems that are found within a habitat while an ecosystem is composed of living and nonliving factors. An ecosystem is quite smaller than a biome and exists within a biome.
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Plant cells like ____ hair cells have a long projection to increase the surface area for absorption of water
Answer:
root hairs
Explanation:
around the mid-1850s, mendel crossed true-breeding purple-flowered pea plants with true-breeding white-flowered pea plants. the results of his research provided us with the basic principles of heredity.
Answer:
Yes and you can use a Punnett square to predict the genotype of their offspring!
THIS IS THE PICTURE
Answer:
looks yummy
Explanation:
What is that btw hahaha
Which type of interaction is described below? ________ interactions occur between individuals of two or more different species.
what is the thickest and longest nerve in the body
Which of the following snack foods is comprised mainly of carbohydrates?
Answer:
d. All of the above
Explanation:
each upward movement of the basilar membrane causes the stereocilia of the inner hair cells to bend, opening __________ gates.
Sperm cells have a whip like ____ to move them through a liquid.
Answer:
tail
Explanation:
Answer:
flagellum
Explanation:
a slender threadlike structure, especially a microscopic appendage that enables many protozoa, bacteria, spermatozoa.
what do you understand by the term reproductionwhat do you understand by the term reproduction
Answer:
Reproduction is the manufacturing of offspring. There are primary forms: sexual and asexual reproduction. In sexual reproduction, an organism combines the genetic statistics from each of its mother and father and is genetically unique. In asexual reproduction, one parent copies itself to shape a genetically same offspring.
Explanation:
Make sure to rewrite it in your own words, don't get caught cheating (for those who are.)
Which processes contribute to the formation of chemical sedimentary rocks?
Organisms decay in a solution.
Minerals dissolve and crystalize.
Rock fragments squeeze together.
The remains of plants and animals
Explanation:
Rock fragments squeeze together
which parts of the monomers involved in the dimer formation
Answer:
A dimer (/ˈdaɪmər/) (di-, "two" + -mer, "parts") is an oligomer consisting of two monomers joined by bonds that can be either strong or weak, covalent or intermolecular. The term homodimer is used when the two molecules are identical (e.g. A–A) and heterodimer when they are not (e.g. A–B).
Explanation:
what is the general purpose of the light reactions of photosynthesis
Answer:
The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules.
Explanation:
Sana tama hshshshshsh
Uy may nag abroad ah
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which is a type of sequence identified by gene annotation?
Answer:
DNA annotation or genome annotation is the process of identifying the locations of genes and all of the coding regions in a genome and determining what those genes do. Hope this helps!!!
Explanation:
5. Which of the following enclose their DNA in a nucleus?
b. bacteria
c. eukaryotes
d. viruses
what needs to occur for a fluorescent mineral to give off light?
Fluorescent minerals contain particles in their structure known as activators, which respond to ultraviolet light by giving off a visible glow. Ultraviolet light is a form of electromagnetic radiation invisible to the human eye. There are two classified ultraviolet wavelengths: longwave and shortwave.
