Answer:
D. Mechanical isolation
Explanation:
I’m not really sure but I hope that you get it right!
Answer:
C
Explanation:
I JUST TOOK THE TEST
In pea plants the allele for axial flowers (A) is dominant to the allele for terminal flowers (a). What is the expected genotypic ratio of a cross between two pea plants that are heterozygous for the axial flower gene?
Answer:
3:4 axial flowers
1:4 terminal flowers
Explanation:
A. a
A. AA. Aa
a. Aa. aa
The expected genotypic ratio of a cross between two pea plants that are heterozygous for the axial flower gene is 1/4 AA, 1/2 Aa and 1/4 aa.
What is a heterozygous individual?A heterozygous individual is an organism that carries two different alleles for a given gene locus.
Conversely, a homo-zygous carries the same allele for a given gene locus.In conclusion, the expected genotypic ratio of a cross between two pea plants that are heterozygous for the axial flower gene is 1/4 AA, 1/2 Aa and 1/4 aa.
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Reef-building coral are marine animals with single-celled algae living in their tissues. The coral provide protection for the algae and the algae provides food for the coral.
Which of these statements best explains what would happen to the coral if the algae die?
A.
The coral would grow well because it does not have a parasite.
B.
The coral would die because it needs the food produced by the algae.
C.
The coral would die because it cannot produce food for the algae.
D.
The coral would grow well because it does not have a competitor.
Answer:
it’s B
Explanation:
Carolus Linnaeus developed a two-part naming system to refer to all living organisms. The two-part name, known as binomial nomenclature, identifies a species and genus name. What is the correct binomial nomenclature for humans?.
The correct binomial nomenclature for humans is H. sapiens, in which H. is genus and sapiens is species.
What is binomial nomenclature?The binomial nomenclature is a two-term naming system in which the name of every species is named specifically.
This naming system was developed by Carolus Linnaeus.
It is written as a genus with the following species.
For example the scientific name of the dog is Canis (genus) familiaris (species).
Thus, the scientific name of humans is H. sapiens.
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Base pairing in dna is dependent on which type of bond?.
Which one of the amino acids is capable of forming a disulfide linkage with itself?.
Answer:
Cysteine is the amino acid that is capable of forming a disulfide linkage within itself
White perch is a fish that is native to Atlantic coastal regions and is invasive to the Great Lakes. It feeds on native species and is thought to be the cause of the decline of the Great Lakes walleye fish populations. What was most likely its mode of introduction?
O produce brought from the eastern states
O trapped in a ship's ballast or a water tank
O trapped in a cargo crate carrying nonperishable items
O luggage brought in an overseas flight
Answer:
The white perch came from Erie or Welland canals, which provides access across natural barriers
Explanation:
The most likely mode of introduction of the White Perch to the Great Lakes is through being trapped in a ship's ballast or a water tank. Therefore, the correct option is B.
What is White Perch?The freshwater fish known as "white perch" are native to the Atlantic coast of North America from Nova Scotia to South Carolina. It is a well liked fish as well as game fish. Outside its natural range, the species has been introduced to several other bodies of water, including the Great Lakes, where it is considered invasive and a threat to native fish populations.
White perch was probably introduced to the Great Lakes by getting caught in ship ballast or a water tank. The fish may have been accidentally carried by ships from the Atlantic coast and introduced into the Great Lakes through the discharge of their bilge water.
Therefore, the correct option is B.
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At what week does the baby reach half of its total birth mass at 20 weeks?
Explanation:
its 20 week's that it is half way in it's
birth mass
i need help with this problem !
If a double-stranded dna sample were composed of 10 percent thymine, what would be the percentage of guanine?.
The strand of DNA will be composed of 40% guanine.
We know that each base have complimentary bases, so since there are 10% thymine, we can expect that there will also be 10% adenine. That leaves us with 80%. There are two bases left, guanine and cytosine, so if you divide 80% by 2, you will get 40%.
Why do rna viruses appear to have higher rates of mutation?.
Beginning with a newly formed daughter cell, what is the order of the other stages of the eukaryotic cell cycle
Answer:
InterphaseMitosisCytokinesiswhat recycles matter back into the food web and biogeochemical cycles
Answer:
A decomposer
Explanation:
The type of microscope used in most science classes is the:.
Light microscope.
it is smaller than an electron microscope which is huge!
Which group 2 element has fewer protons than bromine but more protons than sulfur
Answer:Calcium (ca)
Explanation:
it is a group 2 element having fewer protons than bromine but more protons than sulfur.
what causes genetic variation between parents and offspring
What are actin and myosin composed of?
Answer:
In muscles, the protein filaments myosin and actin make up the thick and thin filaments, respectively. During contraction, these filaments slide over one another in a series of repeated movements.
Explanation:
Answer:
Actin filaments are composed of actin, tropomyosin, and troponin proteins. Myosin filaments are composed of myosin and meromyosin proteins. Cross bridges. No cross-bridges are present in actin filaments. Myosin form cross-bridges.
The type of endocytosis in which a cell membrane engulfs solid particles from its surroundings is called
The type of endocytosis would be phagocytosis.
What is Phagocytosis?Phagocytosis is a process whereby the membrane of cells surrounds and engulfs substances such as microbes, apoptotic cells, etc.
By engulfing, the cell is able to ingest the particles from the surrounding.
It is as opposed to pinocytosis whereby cells take in liquid from the surroundings.
The general process whereby cells engulf substances from the surrounding is known as endocytosis.
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Describe an ecosystem that includes interactions between living and nonliving things.
Answer:
An estuary that includes frogs, fish, lilipads, algae, water, rocks, and hosts various biological processes including photosynthesis, erosion, evaporation, competition, and more.
Explanation:
Why are spores, as opposed to sperm, the primary means of dispersal in moss?.
spores are light & small & encapsulated
The spores are very resistant to the the external environment since they are encapsulated structures , this type of dispersal helps past against natural calamities and promotes more living of the plant in further generations in extreme conditions . Since they are light weight and have small size they can be dispersed easily so helps in diversification of the plant in the area . These advantages are not well suited for sperms. Moreover, in mosses, the sperm requires water for the movement to meet the ova cells to make zygote.
jean keeling
The spores, as opposed to sperm, the primary means of dispersal in moss are bryophyte spores are very small and easily wind-dispersed, potentially over fairly long distances.
What are moss spores?
Moss spores are small single celled packages that play a crucial role in establishing new populations.
Thus, these are primary source of dispersion.
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A lipid-soluble hormone binds to its intracellular receptor and then binds to a portion of DNA called a ______ element (HRE)
A lipid-soluble hormone binds to its intracellular receptor and then binds to a portion of DNA called a hormone-response element (HRE). It is fundamental to activate signaling pathways.
Hormone-response elements and signalingA hormone response element (HRE) is a short nucleotide sequence capable of binding a hormone-receptor complex.
Hormone response elements are located in the promoter gene regions where they function to activate transcription.
The activation of transcription by means of a hormone response element leads to the activation of a given signaling pathway.
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Q- The cancer drug vinblastine interferes with synthesis
of microtubules. In mitosis, this would interfere with
what?
A. spindle formation
B. DNA replication
C. carbohydrate synthesis
D. disappearance of the nuclear envelope
Answer:
A. spindle formation
is the answer
Spindle formation is a the cancer drug vinblastine interferes with synthesis of microtubules.
What is Spindle formation?When eukaryotic cells divide, the cytoskeletal structure known as the spindle apparatus arises to divide sister chromatids into separate daughter cells.
It is known as the meiotic spindle during meiosis, a process that generates gametes with half the number of chromosomes as the parent cell, or the mitotic spindle during mitosis, a process that generates genetically identical daughter cells.
The spindle machinery is made up of hundreds of proteins in addition to chromosomes. Microtubules make up the majority of the machinery's parts.
Therefore, Spindle formation is a the cancer drug vinblastine interferes with synthesis of microtubules.
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What organs are on the lower left side of your body?.
Answer: one of your kidney, ureter, colon, bladder, blood vessels, and nerves
Explanation:
__________ is the process by which some organisms, with features that enable them to adapt to the environment, preferentially survive and reproduce, thereby increasing the frequency of those features in the population.
Answer: Natural Selection
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Leona drew a diagram to compare ginkgoes and conifers. Which characteristic belongs in the area marked X? are deciduous produce cones look like palm trees are the largest group.
The study of plants is called botany. There are different types of plants in the living being and these are algae, bryophytes, pteridophytes, gymnosperm, and angiosperm.
The correct answer is mentioned as follows:-
GYMNOSPERMThe less developed plant which does not bear flowers and has covered less seed is called gymnosperm.According to the question, the diagram is not mentioned in the question hence we can not able to tell the characteristics of the area marked as X. The plants do not look like palm trees.
Hence, provide it with the diagram for better assessment.
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Answer:
a
Explanation:
Which is NOT a non-renewable resource?
A. Geothermal energy
B. Oil
C. Fossil fuels
D. Gas
Geothermal energy.
It is a renewable energy source because heat is continuously produced inside the earth. People use geothermal heat for bathing, to heat buildings, and to generate electricity.
provide an illustration or analogy cell membrane
Answer:
cell Parts Analogy. The cell membrane controls what goes in and out of the cell. The cell membrane is like a screen door, because a screen door holds things out but lets air in.
The intercalated discs in cardiac muscle tissue ________. A. are responsible for the banding pattern, or striations, of the tissue B. attach cardiac muscle cells to the fibrous skeleton of the heart C. are responsible for the banding pattern, or striations, of the tissue, mark the junction between two cardiac cells, and attach cardiac muscle cells to the fibrous skeleton of the heart D. mark the junction between two cardiac cells
The intercalated discs in cardiac muscle tissue mark the junction between two cardiac cells
However, they help roles in the bonding cardiac muscle cells together and in transmitting signals between cells in cardiovascular system
What is cardiac muscle?
It is a type of muscle which helps the heart to pump blood
Cardiac muscle is a special type of involuntary muscle tissue found only in the heart.
What are intercalated discs?They are special kind of muscle cell which link cardiac cell together and helps in muscle contractions
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PLSSSS HELPP
What is the correct equation for cellular respiration?
A.
carbon dioxide + sugar + Energy -> carbon dioxide + water
B.
oxygen + sugar -> carbon dioxide + water + Energy
C.
carbon dioxide + water -> oxygen + sugar + Energy
D.
carbon dioxide + water + Energy -> oxygen + sugar
Answer:
B is the correct answer<3 hope it helps
5. The structures labeled B in the picture above are called...
a. centromeres
b. centrioles
c. sister chromatids
d. spindles
6. The structurc labeled A in the same diagram above as in question 5 is called the...
a. centromere
b. centriole
c. sister chromatid
d. spindle
Answer:
centromere.
explanation:
the contromere is the structure that joins the two chromatids to make a chromosome.
The step that precedes the krebs cycle in aerobic cellular respiration is?.
Answer:
Glycolysis
Explanation:
Electron transport chain and chemiosmosis occurs after kreb cycle.
