Answer:
please give me brainlist and follow
Explanation:
The main function of a leaf is to produce food for the plant by photosynthesis. ... Oxygen is passed into the atmosphere through stomata—pores in the leaf surface. photosynthesis. Green plants such as trees use carbon dioxide, sunlight, and water to create sugars.
a bacterium has positively supercoiled dna. this is likely because
Answer:
A bacterium has positively supercoiled DNA. This is likely because? A. The bacteria don't normally express their genes. B.
Explanation:
The bacteria normally grow in high temperature condition. So, the correct option is D.
What is Bacteria?Bacteria are defined as tiny, single-celled organisms that are millions of different types of bacteria. Many can be found in and on the body and are beneficial to us. Bacteria lack a membrane-bound nucleus and other internal structures, so they are classified as unicellular life-forms called prokaryotes.
The bacteria in our bodies help break down the food we eat, provide us with nutrients and neutralize toxins that play an essential role in preventing infection by protecting colonized surfaces from invading pathogens.
Thus, the bacteria normally grow in high temperature condition. So, the correct option is D.
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Your question is incomplete, most probably the complete question is:
A bacterium has positively supercoiled DNA. This is likely because
A. It doesn't matter if the supercoiling is positive or negative as long as it compresses the DNA
B. The bacteria need most of their genes to be active
C. The bacteria don't normally express their genes
D. The bacteria normally grow in high temperature condition
how long does uncooked ground beef last in the fridge
Answer: 2-4 days
hope this helps
pls give brainliest. thank you
members of phylum rotifera are single-celled organisms.
Answer:
False
Explanation:
hope i helped
The function of the mitotic cell cycle is to produce daughter cells that __________.
a. have the same number of chromosomes as the parent cell but not the same genetic content.
b. have the same number of chromatids as the parent cell had chromosomes.
c. have a random assortment of maternal and paternal chromosomes.
d. are genetically identical to the parent cell (assuming no mutation has occurred).
e. have none of the listed characteristics.
Answer:
The answer is D.are genetically identical to the parent cell (assuming no mutation has occurred).
Explanation:
The function of the mitotic cell cycle is to produce daughter cells that __________.
the division results in the generation of two daughter cells that are genetically identical to the parent cells and each daughter cell contains the same number of chromosomes and all cell content inherited from the parent cell.
which of these primate groups is most closely related to hominids?
Answer:
apes such as chimpanzees
help me pls........
Take a look at the phylogenetic tree. Which two organisms on the tree would be expected to share the most characteristics?
O cnidarians and animals with bilateral symmetry
Ochoanoflagellates and cnidarians
O sac fungi and cnidarians
O amoebas and sponges
Answer:
first option and third option
Explanation:
pls give brainliest have a great day
if a single gene has 3 or more alternative forms, this is called
Hi there! Your answer is "multiple alleles."
Have a great rest of your day!
How can humans influence the nitrogen cycle?
A. By taking really long showers
B. By using too many fertilizers
C. By driving cars that release lots of carbon dioxide
Explanation:
I think the answer is B hopefully it's right
All living things are made of cells, but not all cells are the same. While a specific cellglossary term (opens in a new window)’s structureglossary term (opens in a new window) depends on the type of cell, some structures are common to all eukaryoticglossary term (opens in a new window) cells. For example, all eukaryotic cells have a nucleus, membrane-bound organelles, a plasma membrane, and cytoplasmglossary term (opens in a new window). The nucleus of a cell surrounds the genetic material with a membrane. Other structures called organelles are also surrounded by membranes. The membranes around the organelles both protect and isolate, helping the organelles work more efficiently. Organelles perform various vital tasks, and each organelleglossary term (opens in a new window) has a specific structure related to its function. Organelles provide the cell with energy, excrete waste products, and make proteins. All eukaryotic cells also have a plasma membrane that envelopes the entire cell. The membrane has many passages through it. These passages chemically control what can enter or leave the cell. All eukaryotic cells also have cytoplasm. This jelly-like fluid fills the cell’s interior and contains thread-like proteins that help the cell keep its shape.
SUMMERIZED PLEASE ILL give brianly est
Answer:
The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells. The cell is the fundamental unit of structure and function in living things. All organisms are made up of one or more cells. The cell is the basic unit of structure and organization in organisms. Cells arise from pre-existing cells. A cell is the smallest unit that is typically considered alive and is a fundamental unit of life. All living organisms are composed of cells, from just one unicellular to many trillions multicellular. I hope i helped you
Explanation:
True or false? The effectiveness of an exchange surface is increased if there is a long diffusion path.
Answer:
True
Explanation:
The Long and Diffusion Path can Help the exchange surface to increased rapidly in a long diffusion path. in other words it grows faster.
If the diffusion path is long, the effectiveness of an exchange surface is improved is false.
What is diffusion?Diffusion is defined as the net movement from an area of higher concentration to an area of lower concentration caused on by the dispersal of any material's in-solution or gas-particle particles.
Diffusion is the process by which dissolved chemicals enter or exit cells.
What are the parameters that affect the diffusion?the three parameters that affect diffusion are
The concentration gradient. temperature.length of diffusion pathway.the membrane's surface area.The rate of diffusion increases with the magnitude of the concentration gradientThe rate of diffusion will increase as the temperature rises.Diffusion will occur at a faster rate if one cell membrane is larger than another.How may an exchange surface's effectiveness be enhanced?a wide surface area. a thin membrane to offer a short diffusion pathway. an effective blood supply.ventilation of the animals.learn more about diffusion here https://brainly.com/question/2135861
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which term describes the decrease of the male hormone testosterone in the aging male?
What is the main difference between mitosis and cytokinesis?
Answer:
Mitosis refers to a cell centre division into two, whereas cytokinesis refers to the further breakdown of the cell cytoplasm that forms two girl cells.
Specific cell organelles and cytoplasms are cytokinesis, whereas mitosis is only inherited through heritage.
Organelle division is not essentially equal during cytokinesis.
Explanation:
hope this helps you if it does please mark brainest
which description of a muscle action is not correct?
Answer:
saying that muscle action is not correct is incorrect
Explanation:
science
Keyori is making a model to illustrate the functions of ADP and ATP in photosynthesis. Which model best illustrates the role of ATP in photosynthesis?
A power plant that generates energy
A rechargeable battery that stores and releases energy
A pigment that receives the energy of sunlight
A hammer that helps break apart water molecules
Answer:
A. po
Explanation:
kadi i dont know sorry
What helps weaken atp bonds so energy can be released and then later help reform them?
Enzymes help weaken these bonds so energy can be released and then later help reform them.
that's the answer
ADP (adenosine diphosphate) is formed when these high-energy connections between the phosphate groups at the end are broken, releasing energy for the cells to utilize.
How is energy stored in ATP?One phosphate group is left on its own, these powerful associations may be broken and rebuilt with the aid of enzymes.
When a third phosphate is added to the ADP molecule, reforming ATP, water that was broken down into its hydrogen atom and hydroxyl group during ATP hydrolysis is recovered.
Energy must be introduced into the system to regenerate ATP, ADP develops and energy is released for the cells to utilize when these connections are broken.
Therefore, ATP has the capacity to store and transmit chemical energy, high-energy bonds are used to link the final two phosphate groups.
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which body system initiates the process of muscle contraction
Answer:
Nervous System
Explanation:
"Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron."
For many generations, the flowers in a meadow have been pollinated by a particular species of honeybee. One year, a new species of
honeybee moves to the meadow. This new species pollinates the same flowers as the old species. Which description best predicts
what would happen if a new species of honeybee moves into a meadow that was already occupied by a particular honeybee that
pollinated the meadow?
Answer:
By the process of mating there will be again undesirable species (hybird) and the particular honey bee might get extinct.
There will be imbalance in ecosystem if a new species of honey bees moves into a meadow that was already occupied by a particular homey bees.
How were ozone levels monitored in 1920?
Answer:
I don't know
Explanation:
Sorry.. I really don't know
..
.
Help you later
Ozone levels in 1920 were primarily monitored using chemical methods, such as the use of chemical indicators and colorimetric analysis.
Potassium iodide-starch paper was used to detect ozone. When exposed to ozone, these indicators changed colour, letting researchers visually monitor ozone concentration.
Colorimetric analysis was also used. Chemical reagents reacting with ozone changed colour. Ozone concentration connected with colour change intensity. Chemical approaches measured ozone qualitatively or semi-quantitatively. They were easy to use but less precise than modern monitoring approaches.
In the following decades, spectrophotometry and ozone analyzers improved the systematic monitoring and quantitative measurement of ozone levels. These improvements made atmospheric ozone monitoring more precise.
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When methane (CH4) combines with oxygen (O2), carbon
dioxide (CO2) and water vapor (H20) are produced.
Which equation represents this chemical reaction?
O A. CO2 + CH4 + 2H20 + 202
OB. CO2 + 2H20 – 202 + CH4
OC. CH4 + 202 – CO2 + 2H20
OD. CH4 + 2H20 - 202 + CO2
Answer:
C. CH4 + 202 – CO2 + 2H20
Explanation:
CH4+O2-CO2+H20
The above equation represents combustion of methane to produce carbon-dioxide and water.
One carbon atom is present on the reactant side as well as on the product side. Four hydrogen atoms are present on the reactant side and two hydrogen atoms on product side. In order to balance this equation, we would multiply water molecule by two. Now there are four atoms of oxygen in the product side but only two on reactant side, so we will multiply oxygen molecule by two on the reactant side. Now the equation is balanced.
The balanced chemical equation is:
CH4+202-CO2+2H2O
This equation obeys the law of conservation of mass as the mass of the reactants is same as that of the products.
Answer:
C. CH4 + 202 – CO2 + 2H20
Explanation:
How is coal and petroleum formed
Answer:
Coal and petroleum are formed as a result of degradation of ancient plant life which lived millions of years ago. These dead plant matter started to pile up, eventually forming a substance called peat. Over time, heat and pressure from geological processes transformed these materials into coal.
Explanation:
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which part of the brain consolidates short-term memory into long-term memory?
NO G00GLE PLEASE <3
How can you explain the relationship of the following components within the cell: nucleus DNA, chromosomes, and genes?
Answer: DNA is found in every cell of our body– except red blood cells (no nucleus). Genes are a segment of DNA. Our genes are the blueprint for our biology.
Explanation:
When heart rate increases what else increases?
Answer:
Your heart increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps. Generally speaking, your heart beats both faster and stronger to increase cardiac output during exercise.
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Miss Hawaii
Help this is due in an hour….
Answer:
I'm sure it's A
Explanation:
PLZ THIS IS URGENT HELP
Which of the following genetic crosses follows the Mendelian inheritance?
A) P generation: brown lab x black lab; F1 generation: yellow lab
B) P generation: A blood x B blood; F1 generation: AB blood
C) P generation: Red-eyed fly x Red-eyed fly; F1 generation: White- eyed fly
D) P generation: Widows peak x straight hair-line; F1 generation: Widows-peak
Explanation:
The key principles of Mendelian inheritance are summed up by Mendel's three laws: the Law of Independent Assortment, Law of Dominance, and Law of Segregation.
name 4 types of ecosystem services there are. Give 3-4 examples of these services in our world.
Answer: traditional economy, market economy, mixed economy, command economy
Explanation: 1. Canada or Alaska 2. There are no pure market economies 3. The USA 4. North Korea
2. A compound is (circle the BEST answer)
a. One type of element
b. More than one type of element
c. More than one type of element chemically bonded.
The greater and lesser trochanter are located on which bone?
Answer:
d. Femur
Explanation:
Answer:
femur good job bro
Explanation:
Which of the following describes what occurs during inhalation?
Answer:
c. Ribs move out- diaphragm contracts- lungs expand- decrease intrathoracic pressure
Explanation:
Answer:
c
Explanation:
De donde proviene el oxigeno que se libera durante la fotosintesis
Answer:
Sorry i dont know
Explanation: