Answer:
An angiosperm seed contains structures contributed by three generations of plants.
Explanation:
The spermatophytes, also known as phanerogams, represent a group of seeded plants that have developed special structures for reproduction. This group (spermatophytes) consists of gymnosperms or 'naked seeds', and angiosperms or 'enclosed seeds'. The seed is an organ generated from the ovule after fertilization by the pollen grain, which gives rise to a seedling during the process of germination. In flowering plants, seeds are generated by a process of double fertilization and consist of three tissues: 1-an embryo (generally diploid) formed by repeated mitotic division of the zygote cell, 2- an endosperm tissue (generally triploid, 3n) that nourishes the embryo during its growth, and 3-a seed coat generated from the integuments of the ovule. In angiosperms, seeds consist of three generations: the gametophyte that provides nutrients to the embryo, the embryo, and the seed coat which is generated from the parental tissue (sporophyte).
5) If a body cell contains 50 chromosomes, how many
will exist in its gametes?
25
Answer:
25
Explanation:
gametes are haploid cells and body cells are diploid. when a diploid cell undergo meiosis it will produce haploid gametes with half number of chromosomes. in this case body cell has 50 chromosomes so their gametes have only 25 chromosomes.
The endocrine system and the nervous system both send messages that control processes in other parts of the body. Which is an example of a process caused mainly by the endocrine system?
A. developing allergies to pollen, pet hair, or specific foods
B. regulating growth and functions of certain body organs
C. improving your skills at a sport or other physical activity
D.pulling your hand away when you touch a hot stove
Which picture above accurately shows an example of the circulatory organ system in a zebra?
A. figure 2
B. figure 3
C. figure 4
D. figure 5
Which of the following dietary fats is considered to be the least healthy?
Trans unsaturated fat
All dietary fats are unhealthy
Cholesterol
Saturated fat
Fats that increases the bad cholesterol in the body are considered worst. Thus, Trans unsaturated fat is the correct answer.
What are trans fat?Unsaturated fatty acids have the presence of double bonds. This double bond is either 'cis' or 'trans' in origin.
When the unsaturated compounds are linked through trans bond, they form trans fat.
Trans fat are produced through chemical reaction. This reaction is termed as partial hydrogenation.
Trans fats have shown potential damage to the human body in research studies. Trans fat raises the bad cholesterol level (more lipid, less protein) in the body.
This can lead to several heart disease, liver damage or even atherosclerosis. Such diseases can be life threatening.
Trans fat are found mainly in fried and processed food. The junk food also contains high levels of trans fat.
Therefore, consumption of trans fat should be avoided for health safety.
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The volume of a liquid is often given in a. meters. c. liters. b. centimeters. d. square units. Please select the best answer from the choices provided A B C D Mark this and return
Answer:
C
Explanation:
Liters is a normally used measurement for liquids.
Choose the word that best completes each sentence. Angiosperms’ anchor them in the ground and absorb water for the plant. Their stems provide support to the plant and connect the roots and leaves. Their capture the sun’s energy and use it to make food through the process of photosynthesis. Angiosperms’ contain the reproductive parts of the plant. Their protect and help spread the seeds.
Answer:
Root anchor them in the ground and absorb water for the plant. Woody stem provides support to the plant and connect the roots and leaves. Leaves capture the sun's energy and use it to make food through the process of photosynthesis. Flowers contain the reproductive parts of the plant. fruite protect and help spread the seeds.
Explanation:
Answer:
roots, leaves, flowers, fruits
Explanation:
the producers had 6,000 kcal of energy , how much would be passed to the primary consumer?
Answer:
600 kcal
Explanation:
In an ecosystem, energy is transferred from one organism in a trophic level to another organism in another trophic level. Organisms called PRODUCERS are capable of deriving energy from the sun. However, when fed upon by PRIMARY CONSUMERS, only about 10% of the energy is transferred to them because most of the energy (90%) is lost as heat.
Hence, in this case where the producers had 6,000 kcal of energy, 10% i.e. 10/100 of 6000 = 600 kcal of energy will be transferred to the primary consumers.
can someone explain what's going on in the graph?
How does washing your hands with soap inactivate coronaviruses that may be on your hands?
Answer:
Soap has chemicals that kill bacteria
When you wash your hands with soap and water, you surround any microorganisms on your skin with soap molecules. The hydrophobic tails of the free-floating soap molecules attempt to evade water; in the process, they wedge themselves into the lipid envelopes of certain microbes and viruses, prying them apart.
Yea I copied it owo
PLEASE HELP ASAP! WILL GIVE BRAINLIEST TO CORRECT ANSWER! HELP!! HELP!!
The diagram shows the structure of an animal cell.
The image of an animal cell is shown with some organelles labeled numerically from 1 to 6. The outer double layer boundary of the cell is labeled 1. A stacked disc like structure is labeled 2. A broad rod shaped structure with an irregular shape inside it is labeled 3. The entire plain section that forms the background of the cell and is within the outer boundary is labeled 4. A small circular shape within the large circular shape is labeled 5. The large central circular shape is labeled 6.
Which number label represents the cell membrane?
1
2
4
6
(this is middle school science)
Answer:
4
Explanation:
Answer:
4
Explanation:
I took the test
which organelles are important to the life process of metabolism
Answer:
Cellular Metabolism
Explanation:
Im pretty sure thats it!
Answer:
the mitochondrion and the chloroplast.
Explanation:
The central dogma describes which of the following?
the process by which enzymes are modified after translation
the way DNA is replicated
the flow of genetic information
the way RNA is used as a template to make DNA
Answer:
The correct answer is - the flow of genetic information.
Explanation:
The process includes the flow of genetic information or instructions encoded in DNA used to make or turn to a final product that can be DNA or protein, known as the central dogma.
Mostly central dogma term use for the protein synthesis from the DNA that takes place in the two steps, transcription is the first converts DNA into RNA and the second translation that converts product of the first step that is RNA into Protein. DNA → RNA → protein.
Thus, the correct answer is - the flow of genetic information.
The central dogma describes the flow of genetic information. The correct option is C.
A key idea in molecular biology known as the core dogma outlines how genetic information moves through cells. It says that RNA is translated into proteins from transcribed DNA.
This idea emphasises how genes are expressed and proteins are made in living things by sequentially transferring genetic information from DNA through RNA to proteins.
The fundamental dogma excludes DNA replication, the reverse transcription of RNA into DNA, and the process of post-translational enzyme modification.
Thus, the correct option is C.
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Your question seems incomplete, the probable complete question is:
The central dogma describes which of the following?
A. the process by which enzymes are modified after translation
B. the way DNA is replicated
C. the flow of genetic information
D. the way RNA is used as a template to make DNA
Can’t roots be eaten as food? True or false.
Answer:
false
Explanation:
hope dis helps
Answer:
true, people have been eating roots for years
Hope this helps!!!
plz mark brainliest
Explanation:
In what area of the world does the low pressure area stay in the winter? Why?
Answer:
Atlantic because minuses 0 degrees
How can scientists predict the muscle size of an animal?
O Scientist can make inferences based on the location fossils are found.
O Some fossils contain muscle tissues.
O Scientists can make inferences based on the type of climate that animal lived in.
O Bone scars give clues about the muscle size.
THIS IS ABOUT FOSSILS
Answer:
the answer is: bone scars give clues
Explanation:
Answer:
the answer is bone scars give clues about the muscle size
Explanation:
A protein isolated from a thermophilic bacterium shows a molecular weight of 160 kD when eluted from a size-exclusion chromatography column, but when the purified protein is run on an SDS-PAGE gel, a single band of 80 kD is observed. These results tell us that the protein is eluting from the size-exclusion column as a
Answer:
as a dimer consisting of two identical monomers (80 kDa subunits) that are packed together via hydrophobic interactions
Explanation:
SDS-PAGE (sodium dodecyl sulphate–polyacrylamide gel electrophoresis), is an electrophoretic methodology used to separate proteins that have a molecular weight between 5 to 250 kDa. SDS is a well-known ionic detergent that is able to break hydrophobic interactions and hydrogen bonds. Moreover, size-exclusion chromatography is a filtration technique that separates molecules in solution according to their molecular size. In this case, SDS-PAGE showed that the target protein is composed of two identical subunits (monomers) of 80 kDa each, which were separated by the detergent and formed one single band in the SDS-PAGE gel.
Which of the following statements about the cells of any multicellular organism is true? More than one answer may be correct.
Answer:
C.) (Different genes are expressed in different types of sells.)Explanation:
I hope its help;)(;Using the concepts of chain of custody it is important to (multiple answer) A. document everyone who has handled the evidence prior to a trial B. record the dates and times of the possession of the evidence C. have a complete inventory of the evidence D. weight all of the evidence E. seal all of the evidence in air tight bags
Answer:
A. document everyone who has handled the evidence prior to a trial
Explanation:
A chain of custody can be defined as a paper trail containing the chronological order of items of evidence and how they have been handled, controlled, transferred, analyzed, and disposed during the investigation of a case.
This ultimately implies that, a chain of custody contains all the details or informations regarding the investigators (people) who handled, controlled, transferred, analyzed, and disposed an evidence in the course of carrying out investigations on a particular case. The most important and significant part of an investigation is the evidence because it helps to unravel the truth and facts relating to a case. Therefore, it is very important and essential to document and maintain a chain of custody so as to preserve the evidence.
Hence, using the concepts of chain of custody it is important to document everyone who has handled the evidence prior to a trial.
A museum curator collects fossils from two different periods. He has 400 from one period and 204 from a later period. He plans to arrange the fossils in display cases so that each case contains the same number of fossils. Also, each case must contain fossils from only one period. What is the largest number of fossils that can be placed in each case
Answer:
4
Explanation:
Number of fossils collected over period 1:
400
Number of fossils collected at a later period :
204
For each display case to have the same number of fossils ; the greatest number of fossils possible per case:
Obtain the greatest common factor of both 400 and 204
400 = 1, 2, 4, 5, 8, 10, 25, 40, 50, 80, 100, 200, 400
204 = 1, 2, 3, 4, 6, 12, 17, 34, 51, 102
Hence, the greatest common factor (400 and 204) is 4
Hence, the greatest Number of Fossil possible per case = 4
Emily's dog has puppies. 3 puppies are brown and 2 puppies have spots. The difference in their coat color is known as A trait B feature r variation
Answer:
What
Explanation:
Answer:
This is known as A. Trait
Members of the Kingdom Plantae are characterized by _ while members of the Kingdom Fungi are characterized by ---
cell walls of cellulose; cell walls of chitin
heterotrophy, autotrophy
mostly unicellular organisms; having segmented bodies with jointed appendages
having segmented bodies with jointed appendages; mostly unicellular organisms
d
Answer:
Heterotrophy, Autotrophy
Reasoning: Heterotrophy organisms are organisms who can't retrieve food themselves and use energy and sunlight in order to get their food, which is exactly what plant cells do. Autotrophy is the ability to produce things such as carbon dioxide and oxygen, which plants do as well. Hence, Heterotrophy and Autotrophy are the most reasonable answers.
All organs in the human body perform important functions. Which organ controls all
of the other organs and is called the control center of the body?
stomach
B
small intestine
С
brain
D
liver
Answer:
c
Explanation:
Answer:
Well I thought it was the nervous system but that is connected/ made up of the brain so I would go for C, Brain
Diagrams 1 and 2 show cells from an organism with a diploid chromosome number of 4.
> >
x x
1
2
Refer to the illustration above. Which of the cells will be a diploid cell at the completion
of division?
Both the cells will be diploid cells at the completion of division. Therefore, the correct option is B.
In diagram 1, the chromosomes are in the metaphase of cell division, that is aligned at the centre of the cell. In the next phase which is anaphase, these chromosomes are pulled apart by the spindle fibres in opposite directions. As a result, the chromosomes are split into half and each cell gets half the number of chromosomes in the form of chromatids. Thus, each cell will have 4 chromatids.
In diagram 2, the chromosomes are in the early anaphase stage. When the cell will split into two, each daughter cell will have 2 chromosomes. These chromosomes separate in the telophase and thus, each cell will have 4 chromatids.
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a. Compare the time needed to reach the peak amount of antibody production for the first and second encounters.
Answer:
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Where does competition for reproduction mostly likely occur
Which of the following is another way to refer to body cells?
a. sex cells
b. gametes
c. mitosis
d. somatic cells
Answer:
: somatic cell —opposed to germ cell. 2 : the one of two cells produced by division of the generative cell in the pollen grain of certain gymnosperms that in turn divides to produce two male nuclei or cells
Answer:
D is the answer I'm pretty sure :)
Which energy source provides most of the world's energy consumption?
natural gas
hydroelectric
solar
fossil fuels
Answer:
The energy source which provides most of the world's energy consumption is
Explanation:
Ans = Hydroelectric
4. Is there a relationship between the number of black boxes and any of the water pumps. Be specific and detailed in your answer. .
Answer: Cholerae is fecal contamination of water, meaning people can only get this by using or drinking the contaminated water. If a water pump has the contaminated water, boxes near that water pump will seem higher than areas with clean water.
Explanation:
PLEASE HELP !
this is any multicellular living thing that obtains energy from sunlight or makes it own food
= ??
Answer:
Autotroph
Explanation:
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Answer:
B
Explanation:
Match the words to the definitions