Answer:
A
Explanation:
No matter was lost in the boiling and since it is a closed system the mass will stay the same unless released otherwise
Answer:A
Explanation:
Just took the quiz
Many parts of plants are involved in reproduction. Which of the lists below accurately denotes parts that have a direct role in the reproduction of plants?
Flowers, Cones, Roots
Cones, Stems, Stomata
Cones, Flowers, Fruit
Stems, Leaves, Flowers
Answer:
Cones, Flowers, Fruit
Explanation:
The parts of plant are either said to be vegetative or reproductive. The vegetative part are those parts of a plant that have nothing to do with reproduction (sexual). The reproductive parts are those parts that have to do with the reproduction. According to this question, the CONES, FLOWERS, AND FRUITS are those parts that have a direct role in the reproduction of plants.
- Cones, also called strobili, are structures on which gymnosperms bear their seeds/reproductive structures. The cones can either be male or female.
- Flowers are reproductive structures unique to a group of plants called ANGIOSPERMS. The flowers can either be male called STAMEN or female called PISTIL.
- Fruits are the matured ovary of a flower, which bears in them, the seed of the plant. They are formed after fertilization has occurred in the ovary. Hence, they are involved in reproduction.
The list that accurately denotes parts of a flower that has a direct role in reproduction is ; ( B ) Cones, Flowers and Fruits
Cones are parts of a plant where gymnosperms bear its seeds, they are found in Non-flowering plants containing the reproductive organs of the plants.
Flowers are unique to flowering plants, they are contain the male and female reproductive gametes in plants ( pollen grains and ovules ).
Fruits contains the seed of plants and they are formed after the pollination of the ovules by the pollen grains contained in the pollen .
Hence we can conclude that the list that accurately denotes parts of a flower that has a direct role in reproduction are; Cones, Flowers and Fruits.
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Describe one similarity and one difference
between the structure of a euglena and
an amoeba.
Answer:
can you give me a pic????
Explain what happens to the energy that is not transferred from one organism to another.
How could we decrease the amount of atmospheric CO2?
9. Organelles that make proteins by putting together chains of amino
acids A. Ribosomes B. Mitochondria C. Golgi complex D. Vacuole E.
Lysosomes F. endoplasmic reticulum *
Answer:
Ribosomes
Explanation:
Ribosomes link amino acids together to form proteins.
The ribosomes are responsible for carrying out the process of translation . They read the information stored in a molecule of mRNA and use that information to build a protein.
Hope this helps
How does the process of osmosis ensure that our cells maintain homeostasis?
Answer:
Osmotic homeostasis is maintained despite the influence of external factors such as temperature, diet, and weather conditions. Osmosis is the diffusion of water across a membrane in response to osmotic pressure caused by an imbalance of molecules on either side of the membrane.
what do Prokaryotes and Eukaryotes have the same of?
Both have a nucleus.
Suppose a scientist measures the amount of DNA per cell of a particular diploid species at various stages of meiosis. She finds that the meiotic cells contain 3.7 pg, 7.3 pg, or 14.6 pg of DNA. Match each stage of the cell cycle to the corresponding amount of DNA contained within a cell at that stage.
1. metaphase II2. prophase I3. G14. after cytokinasis of meiosis II5. telophase I before cytokinesis6. G2
Answer:
1. metaphase II - 7.3 pg.
2. prophase I - 14.6 pg.
3. G1 - 7.3 pg.
4. after cytokinesis of meiosis II - 3.7 pg.
5. telophase I before cytokinesis - 14.6 pg.
6. G2 - 14.6 pg.
Explanation:
The cell cycle begins at G1, where all cells in humans (except for the gametes) have 23 pairs of chromosomes, 46 in total, and without any part of the DNA being duplicated. This is the stage in which the cell will have 7.3 pg of DNA.
After G1 comes phase S, which is the phase in which the DNA is duplicated to prepare the cell for the oncoming division; so we can infer that the phase that comes after S, G2, will have twice the DNA the cell had initially: 14.6 pg.
With this amount of DNA, the cell enters the first part of meiosis, in which the homologous chromosomes will be separated into two cells that will each carry on with the second part of meiosis. In prophase I, the cell is just beginning the process of meiosis, so it has 14.6 pg of DNA. In telophase I, the cell still has that amount of DNA because cytokinesis hasn't happened yet, and that is the defining step that ends up actually dividing the cell into two.
Meiosis II begins after cytokinesis I, therefore, the homologous chromosomes have already been separated and each cell has now 7.3 pg. In metaphase II the cell has 7.3 pg, but when cytokinesis of meiosis II ends, the cell will be half the size that was just before, because the sister chromatids are separated - this is where the cell will only have 3.7 pg of DNA.
The cells produced by meiotic cells are gametes, having only 23 chromosomes and the lowest amount possible of DNA.
HELP PLEASE//40POINTS AND I GIVE BRAINLIEST
Answer:
I will put the answer in the Explanation.
Explanation:
Number of Normal Cells: 30 trillionShape of Cells of Normal Cells: UniformNumber of Nuclei of Normal Cell: Spheroid shape, single nucleusAmount of Cytoplasm of a Normal Cell: Large cytoplasmic volumeNumber of Cancerous Cells: We don't all have cancer cells in our bodies. Our bodies are constantly producing new cells, some of which have the potential to become cancerous. At any given moment, we may be producing cells that have damaged DNA, but that doesn't mean they're destined to become cancer.Shape of Cancerous Cells: IrregularNumber of Nuclei in a Cancerous Cells: Multiple, enlarged nucleoliAmount of Cytoplasm in a Cancerous Cell: Small cytoplasmic volumeAnswer:
I will put the answer in the Explanation
Explanation:
Number of Normal Cells: 30 trillionShape of Cells of Normal Cells: UniformNumber of Nuclei of Normal Cell: Spheroid shape, single nucleusAmount of Cytoplasm of a Normal Cell: Large cytoplasmic volumeNumber of Cancerous Cells: We don't all have cancer cells in our bodies. Our bodies are constantly producing new cells, some of which have the potential to become cancerous. At any given moment, we may be producing cells that have damaged DNA, but that doesn't mean they're destined to become cancer.Shape of Cancerous Cells: IrregularNumber of Nuclei in a Cancerous Cells: Multiple, enlarged nucleoliAmount of Cytoplasm in a Cancerous Cell: Small cytoplasmic volumePlease help me if you can with this prompt
Answer:
I and IV
Explanation:
The skeletal system works as a support structure for our body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and tissues and stores calcium and minerals.
What happens to macromoleclues from food during digestion
Why is fermentation unreliable in terms of the production of energy?
Answer:
fermentation is the process of turning yeast to alcohol
Explanation:
What is enzymes Bc i dont know what that is
Answer:
Enzymes are proteins that act as biological catalysts. Catalysts accelerate chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products.
Hope this helps :)
Which organisms below made up of cells that do not have a cell wall
Humans or either animals
Prokaryotic and eukaryotic cells have several differences. Which statement below is not one of those
differences?
Prokaryotic cells are found in the domains Eubacteria and Archaea.
Eukaryotic cells have organelles for processes like respiration or photosynthesis.
Prokaryotic cells cannot make their own proteins.
Eukaryotic cells are generally ten times larger than prokaryotic cells.
prokaryotic cells cannot make their own proteins, the statement is false. Thus the option C is correct.
What are the distinguishable features of prokaryotes and eukaryotes ?Prokaryotic cell are unicellular as it is made up of single cell and the size ranges from 0.2 μm – 2.0 μm while eukaryotic cell are multi-cellular, the size ranges from 10 μm – 100 μm in diameter.
cell wall is present in prokaryotes which involve in providing protection of the cell where as only in plant cell wall is present; True Nucleus is absent in prokaryotes instead of nucleus, nucleoid is present which carry genetic material while in eukaryotes true nucleus is present.
The Ribosomes are Smaller in size and 70s type in prokaryotic cell where as the ribosome is larger in size with 80s type in eukaryotic cell larger in size and linear shaped ribosomes are present.
All the metabolic and physiological activities occur in a single cell of prokaryotes where as the metabolic and physiological activities occur in different organelle.
Thus the option C is correct.
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what order do they go in? Drag each statement to the correct location.
Arya observes that the grass behind her house is dry. She believes the water content in the soil is about two-thirds lower than that of other yards in the area. She's also convinced that the grass is dry because of the slope of her yard. She investigates the problem by following the scientific method. Place the steps she takes in the correct order in the flowchart.
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Order the following from smallest to largest, with 1 being the smallest and
5 being the largest. *
Keystone species affect the populations of many other species in a community.
True
False
Answer:
True
Explanation:
HELP ASAP!! 3 sentences please!!!
what is the structure and functions of RNA?
Answer:mrna Serves as intermediary between DNA and protein; used by ribosome to direct synthesis of protein it encodes
Trna Carries the correct amino acid to the site of protein synthesis in the ribosome
Explanation:
The statement. "Sounds that last from 1 to 3 seconds will be considered a
single chirp," is an example of
1) a controlled experiment
2) an operational definition
3) a manipulated variable
4) a responding variable
Answer:
an operational definition
Explanation:
Answer:
operational definition
Explanation:
An operational definition is a statement that describes how to measure a particular variable or define a particular term. For example, in this experiment you would need to determine what sounds will count as a single “chirp.”
5. Which of the following are enzymes?
1 point
Lipase
Lactose
Amylase
Xylase
Cellulose
Glucose
Fructase
Fructose
Lactase
NONE OF THESE!!!
Answer:
Lipases, Amylase, Lactase, and Cellulase. Did this Help?
Explanation:
Lipases – a group of enzymes that help digest fats in the gut.
Amylase – helps change starches into sugars. Amylase is found in saliva.
Maltase – also found in saliva; breaks the sugar maltose into glucose. Maltose is found in foods such as potatoes, pasta, and beer.
Trypsin – found in the small intestine, breaks proteins down into amino acids.
Lactase – also found in the small intestine, breaks lactose, the sugar in milk, into glucose and galactose.
Acetylcholinesterase – breaks down the neurotransmitter acetylcholine in nerves and muscles.
Helicase – unravels DNA.
DNA polymerase – synthesize DNA from deoxyribonucleotides.
Cellulase -- is any of several enzymes produced chiefly by fungi, bacteria, and protozoans
Which factor will best help a scientist produce valid experimental results?
Answer:
Using large sample sizes and multiple replications of experiment
A student is studying plant cells under a microscope. She observes one set of
structures that she identifies as chloroplasts, and she observes another set of
structures that she identifies as mitochondria. Is it possible that the student has
correctly identified these structures?
Answer:
yes it is possible for the student has identified the structure correctly
succession is how a community changes over time.
O Climax
Ecological
Primary
Secondary
Which part of an atom is
found outside the nucleus?
A. Electrons
B. Neutrons
C. Protons
Answer:
electrons
Explanation:
Bumblebees show some ability to control their own body temperature.
During cold weather, bees warm their flight muscles by shivering. The
bumblebees are able to maintain a body temperature several degrees
above that of the surrounding air. Regulation of their internal body
temperature is an example of *
Development
Metabolism
Response to stimuli
Homeostasis
Answer:
homeostasis
Explanation:
homeostasis controls body temperature among other things.
Which procedures are examples of Descartes's rules for scientific reasoning? Check all that apply.
keeping a detailed record of the procedure and results of a scientific experiment
conducting an experiment to confirm the effects of gravity on Earth
accepting all of Descartes's theories as truth
answering a math problem using mental mathematics
solving an expression in steps using the order of operations
Answer: keeping a detailed record of the procedure and results of a scientific, conducting a experiment to confirm the effects of gravity on earth, solving a expression in steps using the order or operation
Explanation:
Descartes's rules for scientific reasoning include keeping a detailed record of all the procedures and results of a scientific experiment, conducting an experiment to confirm the effects of gravity on Earth, and Solving an expression in steps using the order of operations. Thus, the correct options are A, B, and E.
What are Descartes's rules for scientific reasoning?
Descartes described the important rules which he established to make sure that the conclusions made in the experiment are true. These rules are as follows:
1. accepting nothing as true that is not self-evident, and perform experiment to prove anything
2. Divide the problems into their simplest parts, and keeping the detailed records of each and everything
3. Solve problems by proceeding in a stepwise order of operations in a scientific study.
Therefore, the correct options are A, B, and E.
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A ________ has to survive challenges,adapt,and be able to explain new information and developments.
A)Scientific Law.
B)Scientific Theory.
Answer:
b) scientific theory
Explanation:
In order for the cells of the body to maintain homeostasis, the digestion of food to provide energy for cells must be followed by –
a. building polymers of amino acids from proteins
b. breakdown of fats and oils into glucose
c. the movement of glucose into the bloodstream, then into cells
d. Lipids stored as glycogen in the liver
Answer:b
Explanation:
Which lists metric units, in order, from smallest to largest?
kilogram, hectogram, decagram
decagram, decigram, centigram
milligram, centigram, decigram
decagram, hectogram, milligram
Answer:
milligrams, centigrams, decigrams, kilograms, decagram,hectogram
Explanation:
Answer:
milligram, centigram, decigram
Explanation: