As students observe several slides of tissue cross-sections, one simple key they can use to determine if the slides come from dicots or monocots is to analyze the vascular bundles.
A vascular bundle is described as a portion of the transport system of vascular plants. These bundles are microscopically different in Monocots than they are in Dicots, which will allow students to tell them apart through the tissue slides.
The difference is that monocots contain randomly scattered bundles located throughout the stem. On the other hand, dicots have their vascular bundles more neatly organized in concentric circles. These microscopic differences can serve as a key to be used by the students to classify the tissue samples they are studying.
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What would be the complimentary strand for the DNA sequence
ATAACGA
I need help with dis too plz?
Answer:
DNA-RNA-MRNA
Explanation:
What type of plants are vascular plants whose reproductive structures are cones?
nonvascular
seedless
gymnosperms
angiosperms
Answer:
gymnosperms
Explanation:
Gymnosperms have no flowers or fruits and have unenclosed seeds on the surface of scales or leaves.
Which of these fields of scientific study involves investigating the living world?
A. Geography
B. Hydrology
C. Biology
D. Geophysics
Answer:
C. Biology
Explanation:
The word biology comes from the Greek words bios = life and logos = study
7. How do dissolved minerals help in the formation of sedimentary rock?
How is climate change being impacted?
More frequent and intense drought, storms, heat waves, rising sea levels, melting glaciers and warming oceans can directly harm animals, destroy the places they live, and wreak havoc on people's livelihoods and communities. As climate change worsens, dangerous weather events are becoming more frequent or severe.
What type of immune response would occur if bacteria invaded your lymph?
Explanation:
The lymphocytes would quickly gather around the infected area (lymph) to immediately destroy the bacteria.
Are plants a source or sink of photosynthesis?
Answer:
source
Explanation:
What is a
method of fishing that involves surrounding the schools of fish with a net which is then drawn
together to enclose them
Answer:
Purse seines
Explanation:
Purse seines are used in the open ocean to target dense schools of single-species pelagic (midwater) fish like tuna and mackerel. A vertical net 'curtain' is used to surround the school of fish, the bottom of which is then drawn together to enclose the fish, rather like tightening the cords of a drawstring purse.
What can you infer about the position of the galaxies 100 million years
before this telescope photo was taken? How does this relate to the big bang
theory?
Although the picture for this question is not given, if we have the possibility to view galaxies from 100 million years ago and compare them to the photos we have today, we would see that their positions would be different.
Why would the position of the galaxies have changed?This has to do with the fact that the universe is always expanding.
The idea of an expanding universe means that galaxies are moving farther away all the time.
However, due to the effects of gravity, some galaxies pull each other in and form groups or clusters.
Therefore, due to the formation of galaxy groups or clusters, the position of galaxies may have changed in relation to others from outside its groups in the last 100 million years, while remaining the same relative to other galaxies in its local group.
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Answer:
The positions have changed over time!
Explanation:
Because of this over time change I think it goes with evolution and big bang theory
What are some of the posible signals of male quality in widowbirds and what information might they convey? What are the females choosing and why
Male produces signals of bright red, yellow epaulets and long tails.
Males produce bright red and yellow epaulets as well as chevrons on their wings. These bright epaulets attracts the female of this species and helps in the sexual activity of widowbird species.
The males of several widowbird species also grow long tail feathers about half a meter in length. The long tail is favored by sexual selection through female choice of mates. Female prefer long tails red-collared widowbird so we can conclude that male produces signals of bright red, yellow epaulets and long tails.
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The period of revolution of the earth is called a ?
Orbit
Day
Year
Month
Answer:
Explanation:
A year is defined as the time it takes a planet to complete one revolution of the Sun, for Earth this is just over 365 days. This is also known as the orbital period. Unsurprisingly the the length of each planet’s year correlates with its distance from the Sun as seen in the graph above.
Answer:
a year
Explanation:
The amount of time it takes for a single trip around the sun is called a period of revolution. The period for the Earth to revolve around the sun is 365.24 days or one year.
hope this helps :)
3 facts about angiosperms
Answer:
Angiosperms are the most advanced and beneficial group of plants. They can grow in various habitats as trees, herbs, shrubs, and bushes. The angiosperms originated about 250 million years ago and comprise 80% of the earth. They are a major source of food for humans and animals.
Explanation:
The 3 facts about angiosperms includes plant life, endosperm inside their seeds, and the manufacturing of end result that incorporate the seeds.
What is the difference between Gymnosperms and Angiosperms?Gymnosperms. Angiosperms, additionally referred to as flowering flowers, have seeds which are enclosed inside an ovary (normally a fruit), even as gymnosperms don't have any plant life or end result, and feature unenclosed or “uncovered” seeds at the floor of scales or leaves. Gymnosperm seeds are regularly configured as cones.
The tallest angiosperm is the Australia’s mountain ash tree. They have the peak of 330 toes or one hundred m.Watermeal is the angiosperm with the smallest size. It is ready 0.08 inches or 2 millimeters.More than eighty percentage of the world’s residing inexperienced flowers are angiosperms.Angiosperms emerged approximately 200~240 million years ago, after being diverged from its predecessor, gymnospermsRead more about the angiosperms:
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biết gen A quy định hat vàng trội hoàn toàn so với gen a quy định hạt xanh nằm trên NST thường . cho cây vàng tự thu phấn , kiểu gen con ra đời là gì
Answer:
YY là kiểu gen trội đồng hợp tử (2 alen Y). Kiểu hình của kiểu gen này có màu hạt vàng. Yy là kiểu gen dị hợp tử (một alen trội, một alen lặn). Kiểu hình của kiểu gen này có màu hạt vàng.
Explanation:
The sequence by which electrons travel downhill during aerobic respiration. The se sequence has NADH, oxygen chain of transportation of electron, food and NAD.
Respiration (both aerobic and anaerobic) begins with glycolysis in the cytoplasm of a cell;
1 glucose molecule (C₆H₁₂O₆) is converted into 2 molecules of pyruvate in a 10-step process, consuming 2 ATPs and yielding 4 ATPs;
Additionally, 2 NAD+ molecules are reduced to NADH molecules;
In aerobic respiration, each pyruvate molecule then goes through the link reaction, getting converted to acetyl co-A in the mitochondrial matrix, producing 1 CO₂ molecule and 1 reduced NADH molecule;
Acetyl co-A then enter the Krebs or tricarboxylic acid cycle (TCA) where 2 CO₂, 1 ATP, 3 NADH (by reduction of NAD+) and 1 FADH₂ molecules are produced;
The NADH and FADH₂ molecules produced are electron carriers required for the electron transport chain (ETC);
The electron transport chain consists of 4 proteins within the inner mitochondrial membrane which are involved in the production of ATP by oxidative phosphorylation;
The first protein (C1) is responsible for oxidising NADH to NAD+, releasing energy used to generate the proton motive force (PMF) by pumping the protons (H+ ions) into the intermembrane space and the electrons released are transferred to a ubiquinone molecule;
The second protein (C2) is responsible for oxidising FADH₂ to FADH, also releasing energy used to generate the proton motive force (PMF) and, similarly to C1, the electrons released are transferred to ubiquinone;
The third protein complex (C3) transfers the electrons from ubiquinone to cytochrome C;
Finally, cytochrome C transfers these electrons to the fourth complex (C4), where they combine with free protons in the matrix and O₂ to to produce H₂0;
The PMF is then harvested via an ATP synthase protein where H+ flood back into the mitochondrial matrix, and the energy released is used to generate ATP from ADP and Pi;
ATP is now ready for use for bodily processes requiring it.
what is the main reason scientist do experiments?
A) to find out if a hypothesis is correct
B) to provide jobs for scientists
C) to find different ways to use lab equipment
D) to educate science students
Question 8 of 10
Which is true of Pluto?
A. Pluto orbits the sun every 2.5 Earth years.
B. Pluto's orbit is shorter than Saturn's.
C. Pluto has a moon that is about half its size.
D. Pluto is only larger than Mercury.
Answer:
c
Explanation:
Evolution is a change in
a. a living thing as it grows older
b. a species over time
c. characteristics of living things
d. the history of the Earth
2 Answer:
Homologous body parts are similar in
a. function
b. structure
c. both a and b
Fermentation in yeast cells produces alcohol.
is true or false
Answer:
l think that it's true.hope this helps
Help please :) thank you
Answer:
C
Explanation:
am su that is the answer u need
What is the function of the phloem? Select one: Phloem carries water and minerals to the rest of the plant from the roots. Phloem transports sugar down from the leaves to the rest of the plant. Phloem carries nitrogenous wastes to the roots where the waste leaves the plant. Phloem carries water from the leaves to the rest of the plant.
Answer:
Phloem transports sugar down from the leaves to the rest of the plant
Explanation:
Phloem carries the chemically created sugar, made from sunlight, down the plant to feed it.
Which elements would HAVE a dipole interaction when bonding* in
Oco
Na-CI
H-H
K-Ca
Answer:
NaCl
sodium chloride have dipole interaction when bonded
What is the function of stomata
THE TINY HOLES PRESENT IN THE LEAVE , THAT EXCHANGE THE GAS IS THE FUNCTION OF STOMATA.....
What is the nervous system composed of?
A. The central nervous system
B. The peripheral nervous system
C. The respiratory system
D. Answers A & B
Answer: D) the central and peripheral nervous systems
hope this helps
What's three parts of the body?
A penis a leg and a arm(this needs to be 20 letters long that's why I'm putting this down)
where are electrons located
Electrons are located outside of the nucleus.
Unlike their partners; protons and neutrons, who are located inside the nucleus, electrons are only found outside the nucleus.
I hope this helps!
I need help with dis plz the one dat says during
Answer:
cytokinesis
Explanation:
It’s the process that separates the parent cell into two indistinguishable daughter cells
DNA is know as the molecule of life because it
Often referred to as the molecule of life, DNA (deoxyribonucleic acid) is found in almost all living things. It acts as a type of chemical code that contains instructions, known as genes, for how the body and all its different parts grow, develop, function, and maintain themselves.
(01.07 MC) worth 50 points
Fracking uses highly pressurized fluids, such as water mixed with sand and chemicals, to drive open cracks that exist in underground rock. Which statement
best describes an environmental consequence of this process for ecosystems?
O Wastewater is contaminated with oil and becomes sludge in landfills
O Water vapor is released into the air, which is considered a greenhouse gas,
Heavy metals are released into surrounding soil, poisoning local vegetation
O Billions of gallons of water are pulled from surrounding areas
The correct answer is that chemicals added to the liquid can contaminate groundwater.
Fracking is a method of drilling fossil energy resources, which requires a lot of water and consumes local water resources. It is pumped with high pressure water, sand and chemicals, causing high pressure to block the porous rock and release gas.
The water spill itself destroys nature from the drilling site, and may even cause earthquakes, especially due to the pumping of abundant wastewater into porous rock types such as limestone. For example, Oklahoma appears to have become a special earthquake risk area. The biggest impact of water distortion is on groundwater. In Wyoming, USA, the same chemicals found in groundwater have been found in groundwater, and some of them are toxic or carcinogenic.
Answer:
the answer is A
Explanation:
Fracking is a method of drilling fossil energy resources, which requires a lot of water and consumes local water resources. It is pumped with high pressure water, sand and chemicals, causing high pressure to block the porous rock and release gas.
The water spill itself destroys nature from the drilling site, and may even cause earthquakes, especially due to the pumping of abundant wastewater into porous rock types such as limestone. For example, Oklahoma appears to have become a special earthquake risk area. The biggest impact of water distortion is on groundwater. In Wyoming, USA, the same chemicals found in groundwater have been found in groundwater, and some of them are toxic or carcinogenic.
What's the scientific name of a leopard?
Answer:
Panthera pardus
Explanation:
leopard, (Panthera pardus), , also called panther, large cat closely related to the lion, tiger, and jaguar. (credit to brititanica articles)