Answer:
1. Having two similar gametes in which no differentiation can be distinguished, or reproducing by the union of such gametes.
e.g. in Spirogyra and Ulothrix
2. Anisogamy refers to a type of sexual reproduction in which two dissimilar gametes unite or fuse. The gametes may differ in size or form.
Example : human beings, the male gamete sperm is smaller and motile while the female gamete egg is non motile and larger.
3. having or involving a small motile male gamete and a large immotile female gamete.
E.g. Volvox, Fucus
What causes the
sun's rays to hit
different parts of
earth at different
angles?
A. the curve of the earth
B. the magnetic field of the
earth
C. the distance between
the sun and the earth
D. more wind from the
equator
Answer:
B
Explanation:
B is the answer because the magnetic field of the earth attracts sun Ray's
Comparable segments of the mitochondrial DNA sequences of two similar species are shown below. This segment of DNA mutates at a rate of two base pair per 330,000. years. The DNA sequences for Species A is CTGTCCGAAG and Species B is CTGTCCGTCG. How many years ago did these species diverge from a common ancestor? 660,000 years ago
33 years ago
330,000 years ago
6,000 years ago
The homo-logous mitochondrial sequences CTGTCCGAAG and CTGTCCGTCG suggest that species diverge from a common ancestor 660,000 years ago.
What is the mutation rate?The mutation rate indicates the number of nucleotide differences between two homo-logous sequences that emerged in evolution in a given period of time.
In this case, the mutation rate is one nucleotide per 330,000 years and here we have two mutations (CTGTCCGAAG and CTGTCCGTCG), thereby it is expected that the sequences diverged 660,000 years ago.
In conclusion, the homo-logous mitochondrial sequences CTGTCCGAAG and CTGTCCGTCG suggest that species diverge from a common ancestor 660,000 years ago.
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the binomial effect size display is a method for illustrating the size of:
The binomial effect size display is a method for illustrating the size of: correlation coefficients.
What are correlation coefficients?This is a term that has to do with the linear interdependence that exists between sets of data.
This helps to measure the existing strength between the various variables that are used in a regression analysis.
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In what ways are cleavage lines in the skin clinically significant? check all that apply.
In ways are cleavage lines in the skin clinically significant stretching of the pores and skin at some point of being pregnant or severe weight benefit will motive stretch marks alongside those strains.
What is the importance of cleavage strains?It is critical for fitness specialists to apprehend cleavage line guidelines due to the fact an incision made parallel to the cleavage strains is much less in all likelihood to hole than an incision made throughout them.
Cleavage strains are topographical regions at the frame in which the collagen has a tendency to be thinner that's critical for surgeons to recognize in order that they make incisions parallel to the ones strains to enhance healing.They are surgically critical due to the fact any technique ensuing in a reduction perpendicular to a cleavage line may also gape and put off healing.Read more bout the cleavage lines :
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What are some examples of jawed vertebrate fish?
Jawed vertebrate fishes include bony fishes, sharks, rays, and skates.
Jawed fishesJawed fishes are of two classes, namely:
Chondrichthyes: the cartilaginous fishes that include sharks, rays, and skatesOsteichthyes: the ray-finned and lobe-finned fishes which include bony fishes such as tilapia, tuna, salmon, etc.More on jawed fished can be found here: https://brainly.com/question/1078864
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If placed on the icr plan, do you want to repay your direct loans jointly with your spouse?.
No. Married borrowers are no longer permitted by law to combine their loans into a single joint consolidation loan. You must submit separate applications if you and your spouse both want to repay your loans using an income-driven repayment plan.
What is ICRR plan?
ICRRS is the name of a system that evaluates a customer's financial situation, including their liquidity, cash flow, profitability, debt profile, market indicators, industry and operational background, management skills, and other indicators, to determine whether they can repay a loan.
Your spouse's income is only taken into account under the ICR plan if you jointly filed your tax return.
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Explain why the biodegradation of plastic might be more hazardous to the environment than the presence of plastic as marine debris.
Answer:
they generate a large amount of macrobiotic flora which can cause diseases to humans as well as animals
Answer:
While plastic is not generally considered biodegradable, it can be broken down by the action of photodegradation and certain microbes. The breakdown products of plastic, however, are extremely toxic to marine life and once the plastic breaks down they are free to enter into the food chain. Therefore, while plastic marine debris is hazardous and dangerous to marine organisms, the toxic breakdown products of plastics have the potential to do even more damage.
Explanation:
Sample answer :)
During eccentric muscle contraction, the muscle __________.
Answer:gets longer as it contracts
Explanation:
What were land bridges used as an explanation for?
A. Tidal forces
B. Mesosaurus fossils
C. Seafloor spreading
D. Magnetic striping on the ocean floor
SUB
What adaptation
did lobe-
finned fish have that was
different than the previous
organisms?
A. lobes that were the beginnings of arms and legs
B. jaws that helped with catching prey
C. giving birth to live young
D. brain and vertical column
Activate Wi
Go to Settings
Answer: A
Explanation:
Lobes were the beginning of arms and legs, the correct option is A.
What are lobe-finned fish?Lobe-finned fish, unlike other fish, have a core protuberance in their fins that contains many bones and muscles.
The fins are extremely flexible and may be useful for supporting the body on land, as seen in lungfish and tetrapods.
The majority of bony fish have ray fins. These thin fins are made up of skin webs that cover flexible spines. Lobe-finned fish, on the other hand, have fins that look like stumps.
The lobe-finned fishes are the ray-finned fishes' sister group. They are distinguished by paired, fleshy pectoral and pelvic fins espoused by a single bone.
Prehistoric records clearly show that terrestrial vertebrates evolved nearly 400 million years ago from lobe-finned fishes.
Thus, the correct option is A.
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Why have plants been implicated in the devonian glaciations and not in the proterozoic glaciations?
The reason why plants have been implicated in the devonian glaciations and not in the proterozoic glaciations is; Land plants had not yet evolved during the Proterozoic.
Why have plants been dying?The Devonian glaciation occurred in south America and caused a global narrowing of the warm climatic belts, sharp regression, increased clastic sedimentation.
Meanwhile, the Proterozoic glaciation occurred near sea level in low palaeolatitudes. Thus, we can say that the reasons why plants have been implicated in the devonian glaciations and not in the proterozoic glaciations is because land plants had not yet evolved during the Proterozoic.
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The most prevalent antibody class in the blood is:
The most prevalent antibody class in the blood is immunoglobulin G, IgG.
What are antibodies?Antibodies are proteins which are produced by the body and form part of the immune system by binding onto antigens in order to enhance their clearance from the body.
Antibodies are found in the blood. The antibodies found in the blood include the immunoglobulins A, D, E, and G.
The most prevalent antibody class in the blood is immunoglobulin G, IgG.
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The placing of information or objects into groups based on certain similarities is_____
a biochemical analysis
b. classification
c. phylogeny
d. speciation
Answer:
B.) classification
Explanation:
In biology, classification is a way to organize living things. In science generally, this could expand to include any type of object.
Saturn is close to Polaris during some years
true or false
Saturn is not close to polaris
Polaris disappears into the horizon as seen from the equator, and is not visible from the south of the equator. Finding Polaris in the Northern Hemisphere indicates that you are aware of the direction north.
What is the importance of Polaris?Directly above Earth's North Pole is the Pole Star, or Polaris. Due to its location over the North Pole, the pole star is aligned with the earth's axis. As the sole star that is stationary, it is crucial for orientation.
It makes a fairly small circle over the course of a day since it is so close to the celestial equator. As a result, Polaris is a trustworthy indicator of north, since it always remains in nearly the same location in the sky.
Therefore, it is false that Saturn is close to Polaris during some years.
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What is the function of an inclined plane?
Answer:
inclined plane, simple machine consisting of a sloping surface, used for raising heavy bodies.
One reason biodiversity is such an important aspect of sustainability is that it ____. Group of answer choices provides vital ecosystem services through the interactions among species and keeps any population from growing too large maintains a ready supply of new materials for water, soil, and food makes life less susceptible to constant adaptation and changing environmental conditions is the ultimate source of energy for plants increases ecotourism in less developed countries
One reason biodiversity is such an important aspect of sustainability is that it provides vital ecosystem services through the interactions among species and keeps any population from growing too large (option A).
What is biodiversity?Biodiversity refers to the number and variety of species of plant and animal life within a region.
Sustainability is the means of configuring civilization and human activity so that society, its members and its economies are able to meet their needs and express their greatest potential in the present without compromising the ability of future generations to do the same.
Biodiversity helps to ensure sustainability because it provides vital ecosystem services through the interactions among species and keeps any population from growing too large.
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Bacteria are ____________ organisms lacking membrane-bound organelles.
The blank space in the task content should be filled with; Prokaryotic (unicellular).
What are bacteria?Bacteria are a host of unicellular organisms prokaryotic in nature, and are characterized by lack of a true nucleus and other cellular organelles. The bacteria cell is most often composed of the cell wall, plasmid, cytoplasm and flagella.
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Bacteria are single-celled organisms that lack membrane bound organelles
Single celled organisms are also know as prokaryotes. The characteristics of prokaryotes includes;
- They lack nuclues
- They reproduce asexually(binary fission)
- Their cell wall is composed of amino acids and carbohydrates
Bacteria are found all over our surroundings, they can also be found in the human body. They come in different shapes and structures such as cocci, rod, vibro, spiral.
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a protein that is found to a carbohydrate is called a __________
A protein that is bound to a carbohydrate is called a glycoprotein in this scenario.
What is a Glycoprotein?
This refers to a type of protein in which carbohydrate is covalently attached to it.
The presence of the glycan changes the properties of the protein such as the solubility etc.
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Patient: 67 year old female diagnosis: heart failure prescription: daily dose of 48.5mcg of digoxin. how milligrams would be
Assuming the body weight of the woman is 67 kg, milligrams of digoxin required per day for the woman will be 3.25 milligrams.
What is drug dosage?Drug dosage refers to the amount of drug required to be administered to a patient per given time based on body weight or age.
The dosage for digoxin for treatment of heart failure for the 67 year old woman is 48.5 mcg/kg body weight.
Assuming the body weight of the woman is 67 kg, milligrams of digoxin required per day for the woman will be 48.5 * 67/1000 = 3.25 milligrams.
In conclusion, the dosage of drugs depends on age and body weight.
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EASYYYY I WILL MARK BRAINLY
Worldwide, what percentage of human water usage is the result of agricultural activity? What are some of the ways water is used in industry?
Answer:
70% fresh water is used for agriculture According to the United States Geological Survey (USGS), industrial water is used for fabricating, processing, washing, diluting, cooling, or transporting a product. Water is also used by smelting facilities, petroleum refineries, and industries producing chemical products, food, and paper products.
Answer:
In most regions of the world, over 70 percent of freshwater is used for agriculture. By 2050, feeding a planet of 9 billion people will require an estimated 50 percent increase in agricultural production and a 15 percent increase in water withdrawals.
Explanation:
Water is a critical input for agricultural production and plays an important role in food security. Irrigated agriculture represents 20 percent of the total cultivated land and contributes 40 percent of the total food produced worldwide.
stabilizing selection results in _____________ genetic diversity in a population.
a. more
b. less
Please don't answer if you arent 100%
what is the deepest ocean zone called?
a. abyssal
b. intertidal
c. benthic
d. pelagic
Answer:
Pelagic
Explanation:
The deepest regions of the sea are Hado pelagic
answer :)
Harry is studying four surface features of Florida. He classifies the surface features and places them in different columns of a chart as shown below.
Surface Features
Column 1 Column 2
Sinkhole Hot springs
Caverns Geysers
Which of these titles best represents Column 2 of Harry's chart?
formed by freezing groundwater
formed by heating groundwater
formed by evaporation of groundwater
formed by chemical action of groundwater
The title that best represents Column 2 of Harry's chart is B. formed by heating groundwater
What is a Hot Spring?This refers to the geothermally heated groundwater that is formed on the surface of the earth.
Hence, we can see that from Column 2 of Harry's chart, there is the presence of Hot springs and Geysers which are both formed by heating groundwater and option B is correct.
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Answer:b
Explanation:took a test
Some common, underlying predisposition, probably at least partly genetically based, leads to _______ in men and to somatization disorder in women.
Some common, underlying predisposition, probably at least partly genetically based, leads to anxiety disorders in men and to somatization disorder in women.
What is anxiety and symptoms?Anxiety symptoms can manifest on a physical level, such as a feeling of tightness in the chest and tremors, or on an emotional level, such as the presence of negative thoughts, worry, insecurity or fear, for example, and usually several symptoms appear at the same time.
In this case, women are twice as likely to develop anxiety as men because the cultural issue, of activities that are left to the care of the woman: care for the house, with the children, with the family, regardless of whether she works or not
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Which protein in the electron transport system listed in the box to the rightfunctions as diffusible soluble protein
The protein in the electron transport system listed in the box to the right functions as diffusible soluble protein is Cytochrome C.
What is the role of cytochrome c?Cytochrome c is a small heme protein that is associated with the inner membrane of mitochondria. It is a soluble protein, unlike other cytochromes, and is an essential component of the electron transport chain. It is capable of performing oxidations and reductions, but does not bind oxygen.
In this case, diffusible soluble protein is Cytochrome C is an essential component of the electron transport chain.
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A microbiologist has a bacterial culture with 100,000 cells per mL of nutrient broth, but needs to dilute the culture with sterile nutrient broth to 1,000 cells/mL. To accomplish this, the microbiologist should dilute 1 mL of the culture to what total volume, in mL?
A. 10
B. 90
C. 100
D. 1, 000
PLEASE EXPLAIN ASAP
To accomplish the dilution the microbiologist should dilute 1 mL of the bacterial culture in 100 mL of the total volume. Thus, option C is correct.
What is dilution?Dilution is a process of decreasing the solute concentration by the addition of the solvent in the solution. The volume for the dilution is calculated as:
Given,
C1 = 100,000 cell per mL
C2 = 1000 cell per mL
V1 = 1 mL
C1 V1 = C2 V2
100,000 × (1 ÷ 1000)
= 100 mL
Therefore, 100 mL should be used to dilute 1 mL.
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In the case of sickle cell anemia, the slight alterations in the DNA of red blood cells lead to a. defects in the membranes of these cells. b. changes in the structure of the protein hemoglobin. c. poor use of glucose for energy. d. inability of the cells to make protein.
The slight alterations in the DNA of red blood cells lead to changes in the structure of the protein hemoglobin.
What is sickle cell anemia?Sickle cell anemia refers to a defect in the red blood cells in which abnormal hemoglobin is present in the red blood cells resulting in the inability of the red blood cells to efficiently transport oxygen to the tissues.
This is due to a mutation in the gene coding for hemoglobin production.
The red blood cells have a sickle shape.
Therefore, the slight alterations in the DNA of red blood cells lead to changes in the structure of the protein hemoglobin.
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Black coat color is dominant over white coat color in guinea pigs. in addition to coat color, rough coat is dominant over smooth coat.
b. Demonstrate a cross between a heterozygous black/homozygous smooth and homozygous white/heterozygous rough. describe the phenotypes as fractions?
Specialized cell types organized in a way that provides a specific function form.
Answer:
Tissue
Explanation:
A tissue is a collection of cells which are similar in structure and perform similar functions.
In this level a group of specialised cells stay together especially in higher plants.
Eg mesophyll layer in leaves
epidermal tissue, xylem tissue etc
Hope it helps
One half-life of a radioactive isotope has passed when:
a. all the parent nuclei have become daughter nuclei.
b. the number of daughter nuclei is twice the number of parent
nuclei.
c. the number of daughter nuclei is half the number of parent nuclei.
d. the numbers of parent and daughter nuclei are equal.
Answer:
C the number of daughter nuclei is half the number of parent nuclei.
