Answer:
Homologous structures are similar physical features in organisms that share a common ancestor, but the features serve completely different functions. An example of homologous structures are the limbs of humans, cats, whales, and bats.
Which of the following
describes the study of
embryology?
A. Embryology helps scientists
discover the predators of a species.
B. Embryology is the study of adult
organisms.
C. Embryology reveals similarities
between organisms as they are
developing before birth. This is the answer
D. Embryology helps scientists
understand how organisms interact
with their environment.
Answer:
C. Embryology reveals similarities
between organisms as they are
developing before birth. This is the answer
Explanation:
embryology is the branch of Science that is related to the formation , growth and development of the embryo.
MULTIPLE CHOICE QUESTION
Some cell types divide more often than other cell
types.
False
True
Does the hormone estrogen increase the milk yield of dairy cows?
In an experiment answering the question above: what is the control group? <------------
The control group in an experiment to show that the hormone estrogen increases the milk yield of dairy cows is the presence of cows that have not been administered with the addition of this hormone or inhibited in the production of estrogen.
What is the control group?The control group in an experiment is a given group of the sample which is not under treatment, which allows us to make comparisons with the target group.
Therefore, with this data, we can see that the control group does not receive the experimental treatment.
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Where are the two locations that ribosomes are housed after their production inside the nucleus?
Why is cell differentiation essential for every complex multicellular organism?
Cell differentiation is an essential process for the overall development, growth, reproduction and longevity of the complex multicellular organisms.
What is Cell differentiation?
Cell differentiation is the process in which the stem cells become more specialized into different cells. Cell differentiation is an essential process because it creates diversity in life on the planet Earth. It creates diversity within the cells of the body of an organism and allows the cells to create unique structures which fit their individualized functions in that organism.
Cell differentiation is an essential process for the development, growth, reproduction, and longevity of all the complex multicellular organism as it is responsible for the formation and maintenance of different organ systems in an organism.
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Click and drag the following stages into the proper sequence to represent the development of the follicle in the ovary.
The proper sequence to represent the development of the follicle in the ovary are:
Primary follicleSecondary follicleMature follicleOvulationCorpus luteumHow are follicles developed in the ovary?Ovarian follicles develop with the effects of hormones. The follicular phase bears one or two follicles that become dominant and eventually releases an oocyte by luteinizing hormone stimulation.
Development of follicles is stimulated by follicle stimulation hormone (FSH) production in the pituitary gland. Follicles that ripen result in oestrogen level increase. The sequence of follicle development is Primary follicle, Secondary follicle, Mature follicle, Ovulation and Corpus luteum.
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Is correct please I need help
Answer: Yes
Explanation: Yup, its right
19. Cell function is often compared to the operation of a factory or city. Yeshira put together this table comparing cell organelles to functions in a city.
Yeshira's teacher told her she made one mistake. Which comparison should Yeshira change?
A. Lysosome. It should be compared to a bank.
B. Mitochondria. It should be compared to the police.
C. Nucleus. It should be compared to a neighborhood.
D. Ribosome. It should be compared to a construction site.
Cell function is often compared to the operation of a factory or city as Nucleus. It should be compared to a neighborhood. Thus, option C is correct.
What are centrioles?Centrioles are small, cylindrical cell organelles, present near the nuclei of animal cells. They are involved in formation of spindle fibers at the time of cell division that help in proper separation of chromosomes during cell division. Plant cells do not have centrioles.
Nucleus and ribosomes are present in both animal and plant cells, while cell wall is found only in plant cell. Thus, the organelle in diagram that should be listed under 'animal only' will be 'centriole.'
Therefore, Cell function is often compared to the operation of a factory or city as Nucleus. It should be compared to a neighborhood. Thus, option C is correct.
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Which sentences describe the differences between photosynthesis
cellular respiration?
Check all that apply.
identify the structures on this midsagittal view of a brain model.
Top part of brain model:
Left - Lateral ventricleRight - BrainstemLeft side of the brain model:
1st - Corpus callosum2nd - Thalamus3rd - Hypothalamus4th - Cerebral aqueductBottom part of the brain model:
1st left - Pituitary gland2nd left - Pons2nd right - Medulla oblongata1st right - Fourth ventricleWhat is the midsagittal view of the brain?The midsagittal view of the brain shows the major parts of the brain which are three in number. These are the cerebrum, cerebellum and brain stem. Midsagittal plane is the median or middle plane of the body that passes through the midline structure, in this case of the brain.
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how does a person increase their muscle mass
Answer:
by working out
Explanation:
place the events of metabolism in the correct order
Eye color in fruit flies is
sex-linked. What does
this mean?
A. The gene for eye color is on
chromosome 12.
B. The gene for eye color is on both
the X and Y chromosomes.
C. The gene for eye color is on the Y
chromosome.
D. The gene for eye color is on one
of the sex chromosomes. This
The four levels of protein structure are primary, secondary, tertiary, and quaternary structure. Review the levels of protein structure by clicking the image below.
Drag each label into the appropriate bin depending on whether it applies to primary, secondary, tertiary, or quaternary structure.
Proteins are composed of a sequence of amino acids linearly arranged. To accomplish their functions thet must adopt different structures. Primary structure: Amino acid sequence. Secondary structure: Alpha helix. Beta pleated sheet. Results from hydrogen bonding between the backbone constitutents of the polypeptide. Tertiary structure: Results from interaction between side chains (R groups) of amino acids. The overall shape of the polypeptide. Quaternary structure: The aggregation of multiple polypeptide subunits.
What is the protein structure?Proteins are molecules composed of several amino acids.
Amino acids are monomers composed of
a central carbon, a hydrogen atom, a carboxyl group (COOH), an amine group (NH₂), and an R group.
The R group is what differentiates one amino acid from another one.
Several amino acids linearly arranged and connected by peptidic bonds compose the polypeptide.
The peptidic bond is the union of two amino acids by their carboxyl and amine groups.
The R group of each amino acid stabilizes the molecule through their interactions.
The amount of amino acids that compose the polypeptide and their order in the chain determines the primary structure of the protein. The primary structure of the proteins determines the tertiary one.
Protein functions also depend on the amino acid sequences. Proteins with different functions have different sequences. And among species, proteins with similar functions have similar structures.
The primary structure is basically, the sequence of amino acids in the chain. It refers to the amino acid arrangement.
The secondary structure is achieved through hydrogen bonds (between -CO- and -NH- groups), when the polypeptidic chain folds and different regions of the molecule get in touch. The molecule can adopt conformations like the alpha-helix and beta-sheet.
The three-dimensional structure involves a higher folding degree, in a tridimensional space. This level makes the protein even more stable in the environment and capable of accomplishing its functions.
The quaternary structure can be seen when proteins are composed of more than one subunit. The way in which these subunits arrange is the fourth structure.
The hydrophilic R-groups stay permanently in the molecule interior, avoiding interaction with water.
In the image,
Primary structure: Amino acid sequenceSecondary structure: Alpha helix. Beta pleated sheet. Results from hydrogen bonding between the backbone constitutents of the polypeptide.Tertiary structure: Results from interaction between side chains (R groups) of amino acids. The overall shape of the polypeptide. Quaternary structure: The aggregation of multiple polypeptide subunits.You can learn more about protein structure at
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Question 10
All of the following are types of climate occurring along a coastline and are characterized
by of precipitation, EXCEPT:
Maritime Climate
Continental Climate
Mediterranean Climate
1 pts
O Marine West Coast Climate
All of the following are types of climate occurring along a coastline and are characterized by of precipitation, except Continental Climate
What precipitation means?
Any form of liquid or frozen water that condenses in the atmosphere and falls to the ground is known as precipitation. One of the three key phases of the global water cycle is it.
Continental climates are characterized by unpredictable weather patterns and wide temperature variations. The concept of continentality refers to how closely a region's climate resembles that of the interior of a large landmass. This type of climate develops in the mid-latitudes, where no body of water, such as the sea or ocean, regulates temperatures and the dominant wind blows overhead.
Due to the lack of a water body to maintain a milder winter and cooler summer, these areas have colder winters and hotter summers. This is true because rocks and dirt rapidly lose heat and have a smaller heat capacity than water. As a result, the continental climate is generally dry since air masses from distant oceans are lost before they can reach the area.
The Northern Hemisphere, which has the necessary huge landmass for the climate to develop, is where continental climate is most prevalent.
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4. Which of the following is not a compound?
A. h2o
B. co2
C. n2
D. ch4
Explanation:
Ans= n2
Nitrogen gas is an element and not a compound
hope it helps. Please mark brainliest
Answer:
N2
Explanation:
Nitrogen is an element, not a compound. It is found in nature as nitrogen gas, also called dinitrogen, with the chemical formula N2, and makes up 78% of the atmosphere. It is a diatomic element because it is composed of two nitrogen atoms chemically bonded.
The apparatus shown below measures the oxygen consumed by a small animal. As oxygen is consumed, the water droplet moves closer to the flask. Because carbon dioxide is absorbed by the potassium hydroxide solution on the filter paper, it does not affect the results.
You are performing a lab in biology class to determine, quantitatively, if temperature affects the rate of oxygen consumption by a small animal. You will be testing the oxygen consumption of the animal at 0ºC, 15ºC, and 30ºC.
1) Write a prediction about the relationship between oxygen consumption and temperature. (1 point)
2) Using this apparatus, or a similar one, write a procedure to test your prediction. Procedures should be detailed, specific, and written in numbered point form. (2 points)
Since they have a greater metabolism, smaller creatures breathe more quickly.
What is Oxygen consumption of an Experiment?1. In general, the rate of oxygen consumption increases with the increase of temperature. So, here at 30 degree the rate of consumption will be the highest, then at 15 degree, at zero degree it will be ice droplets.
2. The aerobic bacteria present in the water respire in the presence of oxygen. at 0,15 and 30 degree. Here anerobic bacteria can be taken as a control.
So, a culture with medium of aerobic bacteria/yeast can be taken.
It is kept in shaking condition 150-200 rpm and then the temperature is kept at 37 degree.
Bacteria has a doubling time of twenty mins, and yeast has a doubling time of 90mins. So, it is kept at overnight incubation for proper growth of the bacteria. Water droplets are visible at the cap.
At 30 degree the consumption is maximum, then the 15 degree is relatively lower and higher is no consumption at 0 degree where it is frozen.
The oxygen consumption is related to the respiration rate of aerobic bacteria , yeast.
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Which of the following is a difference between radiation and conduction
Answer:
radiation is the transfer of heat by E.M radiation through indirect contact ex. the sun is transferring heat while
conduction is the transfer of heat through direct contact ex. eggs cooking on a frying pan
Explanation:
hope this helps!
In human beings, curly hair is incompletely dominant over straight hair, such that heterozygous individuals have wavy hair. In the following crosses, in which the phenotypes of the parents are given, what are the gametes produced by each parent, and what will be the hair textures of the potential offspring? Use Punnett squares as part of your answers.
Answer:
A genetic cross involves two parents for a specific trait, such as the hair trait. The gene has variations called alleles. In one gene, one allele is dominant over the other. The complete dominant allele can be found in both purebred and heterozygous forms and suppresses the recessive character. Here, the curly hair is incomplete dominant over the straight. Wavy hair is produced in heterozygous states; this is an example of incomplete dominance.
When both HH' parents are crossed, then each parent will form the H and H' gametes. Out of the three offspring, one curly, two wavy, and one straight will be formed. The punnet square is explained below in the image.
Hence, when two people with wavy hair are crossed, three types of offspring are formed, such as those with curly, wavy, and straight hair. The genotype and phenotype ratio is 1:2:1.
Explanation:
how can bush honeysuckle affect the biodiversity of the ecosystem
Answer: Bush Honeysuckles thrive in the Midwest climate. Although these plants may smell and look remarkable, they significantly harm the ecosystems in which they inhabit. The honeysuckle plant competes with native plants for pollinators, which results in fewer seeds germinated in native species
Explanation:
How can hurricanes collect so much water
Consider the three most common types of skin cancer. Then, click and drag each label into the appropriate category.
Arises from keratinocytes in the deepest layer of the epidermis
Raised, reddened, scaly appearance
If metastasized, the deadliest skin cancer
Seldom spreads to other tissues
Arises from superficial cells of the epidermis
Caused by mutations commonly found in moles
Most common type
Can spread from the keratinocytes to the ph nodes
Arises from the cells that protect from UV light
Least common type
The labels for each type of skin cancer are;
Basal Cell Carcinoma:
Most common typeSeldom spreads to other tissuesArises from the deepest layer of the epidermisMelanoma:
If metastasized, the deadliest skin cancerArises from the cells that protect from UV lightLeast common typeCaused by mutations commonly found in molesSquamous Cell Carcinoma:
Arises form superficial cells of the epidermisRaised, reddened, scaly appearanceCan spread from the keratinocytes to the lymph nodesWhat is skin cancer?Skin cancer is an abnormal growth of skin cells often occurring after long exposure to the sun. Basal cell carcinoma is a most common type that rarely spreads to other tissues and comes from the epidermis.
Squamous Cell Carcinoma and melanoma are other types of skin cancers and melanoma is the deadliest of them.
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3. Why do scientists think that Mars and some of the moons of the solar system may contain
some form of life?
Independent and dependent variable?
Answer:
look it up
Explanation:
Answer:
Independent: Different bottles
Dependent: Time to cool down
Explanation:
Dependent is what you are measuring
Independent is what you change basically
What is the function of cilia in animal-like protists?
A. movement
B. reproduction
C. decomposition
D. photosynthesis
How to stop Direct Harvesting
Direct harvesting can be stopped by making stringent laws and follow them, by maintaining the biosphere reserves and also harvest species in a limited number in an environment.
What is direct harvesting?
Direct harvesting can be referred to take a species out of it's natural environment. We need to directly harvest various organisms for resources that support our population growth and maintenance. However, direct harvesting such as overfishing and the use of drift nets has threatened the aquatic biodiversity on a large scale. Likewise, we have also hunted and poached endangered animals to the point of near extinction.
Direct harvesting can be stopped by controlling fishing by making strict laws and apply them. We can also restrict the entry of people in the areas where large population of animals are present as reserve areas.
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2. There were 42 grizzly bears in a provincial park in 1980. There were 30 grizzly
bears in the same provincial park in 1990. What is the rate of change per year of
grizzly bears in this time period?
A. -12 grizzly bears/year
B. -1.2 grizzly bears/year
C. 1.2 grizzly bears/year
D. 12 grizzly bears/year
The rate of change per year of grizzly bears in this time period is B. -1.2 grizzly bears/year.
What is the rate of change?Rate of change (ROC) refers to how fast something changes over time. Thus, it is the acceleration or deceleration of changes (i.e., the rate) rather than the magnitude of individual changes. Rate of change is used in finance to understand price returns and identify momentum in trends.
It is frequently used when discussing momentum, and it can be expressed as a ratio of a change in one variable to a corresponding change in another. The slope, rise over run, or change in over change in is the rate of change for a line.
In this situation, tjere were 42 grizzly bears in a provincial park in 1980. There were 30 grizzly bears in the same provincial park in 1990.
The rate will be:
= (30 - 42) / 10
= -12 / 10
= -1.2
The correct option is B.
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Which phenotype is recessive? *
O mm
O Mm
O Black
O Black and white spotted
Answer:
mm
............................................
Environmental degradation is when natural resources are__________.
A. Used more quickly then are replaced.
B. Replaced
C. Unlimited
D. Used at the same rate they are replaced
Answer:
a. used more quickly then are replaced
which of the following
indicates homozygous
A. XR XR
B. Xr Xr this
C. XR Y
D. XR Xr
recessive?