The vestigial pelvis present on the whale shows that ancestors of modern Whales once had legs, and they had walked on land for more than 40 million years ago.
What are vestigial organs?Vestigial organs that were present in the past and the past generations, but are now unusual in the current generation, but still, are present in the body.
Some examples of vestigial organs are the nictating membrane of the eye, the pelvic bone of a whale, and the appendix organ.
For a very long time, scientists assumed that the diminutive size of the bones was due to their being vestigial, a shrunken evolutionary relic. Derived from an ancestor who formerly traversed the land.
Thus, however, scientists now know that these tiny bones actually serve a significant role in whale reproduction.
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I neeeeedddd helppppp please
Somatic cells in humans contain ____ chromosomes and an example is ______.
Question
If a rose plant has a genotype of Ffgg, what are the possible genetic combinations of offsprings that could be
present from this plant?
Answer:
Suppose you have a parent plant with purple flowers and a parent plant with white flowers. Because the b allele is recessive, you know that the white-flowered parent must have the genotype bb. The purple-flowered parent, on the other hand, could have either the BB or the Bb genotype. The Punnett square in Figure below shows this cross.
Explanation:
why are lipids important for survival of animals
Answer:
Lipids play an important role in storing energy. If an animal eats an excessive amount of energy it is able to store the energy for later use in fat molecules. Fat molecules can store a very high amount of energy for their size which is important for animals because of our mobile lifestyles.
Explanation:
The structure of a human skin cell differs from that of a human muscle cell. The two cells most likely have different __________. Choose the correct answer.
Answer:
The correct answer would be - functions.
Explanation:
The structure of the skin cells and muscle cells are different and have a different number of cell organelles on their role in the body. Skin cells are a special type of cells that keep on shedding and replaced by new ones therefore they need less energy and have many mitochondria.
In contrast, muscle cells have different structures as they need a high amount of energy to make movements and therefore have lots of mitochondria in the cell.
what is the main organic material found in the cell?
Answer:
The organic molecules that are the unique constituents of cells. Most of these organic compounds belong to one of four classes of molecules: carbohydrates, lipids, proteins, and nucleic acids.
Explanation:
:)
The two sides of the DNA helix are held together by
Answer:
By hydrogen bonds
Explanation:
The two "steps" are made from base pairs formed between the nitrogenous bases. The DNA double helix is held together by Hydrogen bonds between the bases attached to the two strans
The diagram shows the heart of a bird.
What is the function of the structure labeled Y? to keep oxygen-rich blood and oxygen-poor blood flowing to filter waste materials from oxygen-poor blood to filter waste materials from oxygen-rich blood to keep oxygen-rich blood and oxygen-poor blood separate
Answer:
to keep oxygen-rich blood and oxygen-poor blood separate
Explanation:
What term describes the average weather conditions in a geographic area?
A. Precipitation
B. Temperature
C. Climate
DWeather
A sand dune, found in deserts and beaches, is formed by what type of erosion? *
-Wind
-Gravity
-Water
-Ice
Answer:
wind
Explanation:
Sand dunes form when the wind deposits sand.
Can anyone help????????
Match the following DNA strand to its complementary strand of RNA
TTA - CAA - ACC - ATA
Question options:
AAU - GUU - UGG - UAU
AAT - GTT - TGG - TAT
AAU - CTT - TGG - TAT
ATG - CCG - AAT - TCG
Answer:
AAU GUU UGG UAU
Explanation:
In RNA thymine is no longer present and A matched with au
Calculate the efficiency of a hair dryer which takes in 3000J of energy per second and transfers 600J as useful heat energy. Calculate the efficiency of the hair dryer.
Answer:
The efficiency of the hair dryer is 0.2 or 20%
Explanation:
The efficiency of a machine or any appliance is a measure of the useful work done by the machine when an effort is applied to the machine. The higher the efficiency of a machine, the more useful work the machine does.
Due to the economical and environmental impact of energy production, machines and appliances of high efficiency are being developed and recommended for domestic as well as industrial use nowadays.
In electrical appliances, energy is usually supplied by electrical power units. The higher the efficiency of an electrical appliance, the less power it consumes to do useful work. For a hair dryer which takes in 3000 J of energy per second and transfers 600 J of useful heat energy, its efficiency is calculated with formula below:
efficiency = useful energy / total energy input
Efficiency = 600 J / 3000 J = 0.2
Therefore, the efficiency of the hair dryer is 0.2 or 20%
which of the following is not a type of covalent bond?
A. single covalent
B. double covalent
C. triple covalent
D. tetra covalent
Answer:
D. tetra covalent, is not a type of covalent bond
Explanation:
The process by which bacteria reproduce is...
(READ CAREFULLY, NERDS)
O A type of Asexual reproduction known as Binary Fission
A type of sexual reproduction known as Binary Fission
Replication through the use of cellular machinery of a host
what are formed when minerals replace all or part of an organism?
Answer:
Petrified fossils are formed when minerals replace all or part of an organism.
When you turn on a lamp, energy is transferred electricity into light and _____ energy stores ,which are dispersed into the surroundings. (what word completes the sentence)
Answer:
Heat or Thermal
Explanation:
Answer:
The right answer is "heat" or "thermal"
Explanation:
Electric lamps generate both light and heat. Heat energy is stored in thermal energy stores.
Body systems in the human body work together to support the essential life functions of the body. The urinary system is under influence of several other body systems to help it function properly. Which of these CORRECTLY pairs a body system and its influence on the urinary system?
Question 31 options:
The nervous system releases the hormones, ADH and aldosterone, which adjust the rates of fluid and electrolyte reabsorption in the kidneys.
The nervous system monitors distention of the bladder, controlling urination.
The cardiovascular system makes erythropoietin to make new red blood cells.
The digestive system excretes wastes not filtered by the kidneys.
Answer:
The urinary system works with the digestive system and in other systems in your body. It releases the waste from the food they digest and it also works with the circulatory system. It works in other systems in the body to help the body maintain the homeostasis says the Biologists. The waste product is kept dissolved in the liquid (water) and in mammals is stored in a bladder. The work of the kidney inside the body is to maintain acid and water-salt levels of the blood. It releases the waste in the body and it also filters the blood inside of you.
Explanation:
I dont know if this helps but its what I have gotten told. I know its not the exact answer but when i looked up your question its what i got.
Answer:
The nervous system monitors distention of the bladder, controlling urination.
Explanation:
The endocrine system releases the hormones, ADH and aldosterone, which adjust the rates of fluid and electrolyte reabsorption in the kidneys. The kidneys make erythropoietin to make new red blood cells for the cardiovascular system. The digestive system absorbs water needed by the kidneys to excrete wastes.
(☞ﾟヮﾟ)☞ I hope that helps ╰(*°▽°*)╯
The dense structure which contains proteins and RNA, found inside the nucleus,*
A (Endoplasmic Reticulum)
B (Nucleolus)
C (Nucleus)
D (Ribosome)
Answer:
D Ribosome
Explanation:
What are the main disorders associated with cardiac muscle?
Answer:
Dilated cardiomyopathy.
Hypertrophic cardiomyopathy.
Arrhythmogenic right ventricular dysplasia.
Restrictive cardiomyopathy.
Explanation:
Have a great day!
What is the end result of mitosis ?
1: 2 haploid daughter cells
2: 2 diploid daughter cells
Answer:
Explanation:
2 diploid daughter cells
features of xerophytes
Answer:
Xerophyte survival characteristics:
Thick cuticle.
Stomatal closure.
Reduction in # of stomata.
Stomata hidden in crypts or depressions in leaf surface (less exposure to wind and sun).
Reduction in size of transpiration surface (lower leaf only).
Increased water storage.
Explanation:
Xerophyte adaptations increase water intake, limit water loss, and store water efficiently. Water intake adaptations include deep or widespread roots, and high salt content to increase osmosis. Xerophytes have thick cuticles, lost or finely divided leaves, reduced stomata, and CAM photosynthesis
During the process of photosynthesis, which of the following is being created by producers
Answer:
choices please
Explanation:
The distribution of materials such as gases, nutrient, hormones, and wastes is called
A Brain consists of ________,__________ and ___________.
If You Give Correct Answer I will Make you Brainliest
Which is the organ that does maximum works in human body?
GIVE ME CORRECT ANSWERS OR I SHALL REPORT ANSWER
but if u ans properly i shall give braniest
Answer:
heart
Explanation:
because it pumps the blood and purifies blood through heart
answer is heart
Explanation:
because it helps to purifies blood from heart
Which gland makes hormones that help you grow and stay full of energy?
Answer:
Your Thyroid gland
Explanation:
A round gland found in your neck. Known for keeping your energy levels up and your height as well.
Which compound can provide the energy for chemosynthesis? A. Oxygen B. Hydrogen sulfide C. Carbon dioxide D. Water
Answer:
1. hydrogen sulfide
2. alkaliphiles
3. a lanternfish on the Atlantic Ocean floor
4. remove methane and hydrogen sulfide
5. methane
Explanation:
Chemosynthesis Quick Check
Just took it xd <3
The compound can provide the energy for chemosynthesis is light photon and carbon dioxide. Thus, option C is correct.
What is photon?
The energy stored in bundles or the packets has been known as the photon. Chemosynthesis has been referred to the process by which some organism obtain food from inorganic chemicals rather than from light. There are many chemosynthetic bacteria that obtain food by the metabolism of methane, hydrogen sulfide or carbon dioxide.
Light photons are not required for chemosynthesis. It is only necessary during photosynthesis. Chemosythesis has been involves the inorganic chemicals therefore, light photons are not required during chemosynthesis.
The organism which provides evidence that matter and energy can be cycled through an ecosystem without sunlight is a lanternfish on the Atlantic Ocean floor and the technique which will prove most effective to eliminate the greatest number of organisms is to remove methane and hydrogen sulfide.
Therefore, The compound can provide the energy for chemosynthesis is light photon and carbon dioxide. Thus, option C is correct.
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Primary productivity is defined as
A. The process where green plants and some other organisms convert light energy into chemical energy using carbon dioxide and water.
B. The overall amount of energy captured by plants and other photosynthetic organisms by the chloroplast.
C. The rate that plants and other photosynthetic organisms produce organic compounds.
D. The adjusted amount of energy in an ecosystem due to energy use by organisms for respiration.
Please help quick, I've answered everything else and this is the last question
Answer: The rate that plants and other photosynthetic organisms produce compounds
Explanation: Just took it
Answer:
B
Explanation:
A population of more than one species that interact with each other and there environment in an area is a
Answer:
Organisms live within an ecological community, which is defined as an assemblage of populations of at least two different species that interact directly and indirectly within a defined geographic area (Agrawal et al.
Explanation:
