Answer: The elements in a group often look and behave similarly, because they have the same number of electrons in their outermost shell. Eg. Group 18 elements, on the far right side of the table, have completely full outer shells and rarely participate in chemical reactions
1.Pine pollen grains often have air sacs.*
True
False
2.Division 1 of meiosis is called "reduction division." *
True
False
3.Fruits develop from the stamens.
True
False
Answer:
1 true
Air-filled sacs in the pollen grains of pine trees allow pollen to travel farther through the air. ... Each pollen grain is attached to two or three air-filled sacs, or sacci, which develop from the outer layer of the pollen
2 true
process of meiosis involves two divisions of the genetic material. The first division is called the reduction division – or meiosis I
3 false
When a grain of pollen reaches the stigma, it creates a pollen tube for the sperm to journey down the style and fertilize the ovule; fertilized ovules become seeds. Fertilization is the death of the flower, as the petals drop or wither at this point and the ovary starts to enlarge and ripen into what we know as fruit.
Which of the following statements is true?
A.Surgery is the best treatment for ALS.
B.Exercise, a healthy diet, and brain activity can delay Alzheimer's disease.
C.Age is the least important factor for Parkinson's disease.
D.Forgetfulness is an early symptom of Lou Gehrig's disease.
Answer:
c
Explanation:
its c and if you could can have brainlest pls because i never got 1 before :(
also it says its more common when 50 years or older but it can be with someone by all ages
Answer:
B. Exercise, a healthy diet, and brain activity can delay Alzheimer's disease.
Explanation:
Its right on Odyssey Ware
Hope it helps!! :)
Describe three differences in the organelles of plant and animal cells.
Answer:
structures include chloroplasts, the cell wall, and vacuoles.
Explanation:
because one has it and the other dose not
Zebra mussels were first discovered in north america in the great lakes in 1988. This invasive species eats phytoplankton and other microscopic organisms in fresh water. What would be most likely effect if zebra mussels are introduced into a local fresh water lake?
Which step of the scientific method do you perform after you collect data and
observations?
O A. Form a hypothesis.
O B. Conduct an experiment.
OC. State the problem.
O D. Draw conclusions.
Answer:
D. Draw conclusions
Explanation:
The scientific method
At the core of biology and other sciences lies a problem-solving approach called the scientific method. The scientific method has five basic steps, plus one feedback step:
Make an observation.
Ask a question.
Form a hypothesis, or testable explanation.
Make a prediction based on the hypothesis.
Test the prediction.
Iterate: use the results to make new hypotheses or predictions.
The scientific method is used in all sciences—including chemistry, physics, geology, and psychology. The scientists in these fields ask different questions and perform different tests. However, they use the same core approach to find answers that are logical and supported by evidence.
What kind of effect can a chromosomal change can have on an organism?
O positive, negative, or no effect
O positive or no effect
O negative effect
O positive or negative effect
Answer: Positive or negative effects.
Explanation: Chromosomal changes is called mutation. Mutation is change or alterations in genetic constituents or chromosomes of an organisms. Not all chromosomal changes are negative or causes genetic disorder bit some have positive effects too. The negative effect causes some genetic disorders but the positive don't have negative impact on health but only the chromosomal sequence might be alter , it functions is still intact.
A scientist has done his background research and has designed an experiment to test a popular scientific theory. Which of the following should he do next?
Answer:
B
Explanation:He hasn't started the steps yet
What are the resources/factors that all organisms compete for in their environment?
How do adaptations allow an organism to compete "better" for those resources/factors?
Answer:
Organisms with the best adaptations are the ones who are can compete for the best. They are the ones who survive. Predators, animals that hunt other animals, must compete to find prey. Prey, animals that get eaten by predators, must compete to stay away from predators and to find their own food.
Answer quick!!
Short answer please
Answer:basicallly what a hypothesis is something you belive in and your trying to prove it. It deifines the relationship between two varaiables.
Explanation:
Answer:
The role of a hypothesis is to give us an idea of what might happen, and if it is right then great, and if it is not then that's fine too because that means it gave us a chance to learn from it and therefore improve our understanding.
Explanation:
yup
5 differences between aerobic and anaerobic respiration
Aerobic Respiration
*Oxygen is present when this form of respiration takes places
*In this form of Respiration gases are exchanged
*it can be easily found in the cytoplasm and mitochondria
*glucose breaks down into carbon dioxide and water
*all higher organisms such as mammals have this type of respiration.
Anaerobic Respiration
*Oxygen absent
*Gases aren't exchanged
*found only in the cytoplasm
*Glucose breaks down into ethyl alcohol, carbon dioxide and energy
*bacteria and yeast use this type
Which type of cloud is shown in the image?
cirrus
cumulus
stratus
fog
Answer:
C.) Stratus
Explanation:
I took the same quiz
Answer:
C.
Explanation:
2. What are genes, and how are they related to alleles and chromosomes? Start with the definitions of genes and alleles. (2 points)
Answer:
Genes are portions of DNA that contains information to encode proteins
Alleles are different forms of one gene
Chromosomes are closed circular DNA molecules that contain the genetic material of an organism
Explanation:
Genes can be defined as regions of DNA which are transcribed to produce messenger RNAs (mRNAs) by a process known as transcription. Subsequently, these mRNAs are translated into proteins. In diploid organisms, each gene contains two different forms called alleles. A chromosome is a long DNA molecule that contains part or even the entire genetic material of an organism. In diploid organisms, one chromosome contains one allele (inherited from one parent), while its homologous chromosome pair contains another allele of the same gene (inherited from the other parent).
USE PICTURE ABOVE!! NEED ANSWERS ASAP!!! 8. Categorize What types of bonds are present in
this molecule?
9. Analyze What elements are present in this
molecule?
10. Solve What is the chemical formula of this
organic compound?
Answer:
Explanation:
The structure represented in the picture attached to the question is a benzoic acid (which is an organic compound).
8. The type of bond present between the carbon-carbon, carbon-hydrogen and carbon-oxygen atoms in the compound (same as other organic compounds) is a covalent bond. This is because oxygen and hydrogen share there valence electrons with carbon; oxygen has two valence electrons and thus it is surrounded with two bonds and hydrogen has one valence electron and thus surrounded with one bond.
9. The elements present in this compound, as can be seen in the picture, are carbon, hydrogen and oxygen which is the reason it is referred to as an organic compound.
10. The chemical formula of this organic compound is C₆H₅COOH. The "cyclic" structure (aromatic structure) there shows that it is a derivative of benzene (because of the presence of the alternating double bonds) while the carboxylic group there has to be written separately in the formula.
What's the relationship between photosynthesis, chlorophyll, thylakoids, and chloroplasts?
Answer:
The structural unit of photosynthesis is the chloroplast. Prokaryotic and eukaryotic photosynthetic organisms possess flattened sacs or vesicles called thylakoids, which contain photosynthetic pigments. Chlorophyll molecules are attached to specific proteins embedded within membranes, along with carotenoids and other components necessary for photosynthesis.
Explanation:
Chloroplasts are typical and exclusive organelles of plant cells that possess chlorophyll. Because of them, plants are capable of carrying out the photosynthesis process, a process that transforms light energy into chemical energy contained in ATP molecules. The inside is filled with a gel called a stroma. It presents a DNA independent of the nucleus and plastoribosomes. Immersed in the stroma, there are flattened sacs called thylakoids or lamellae, the interior of which is called lumen. Thylakoids can spread throughout the stroma or stack in bundles called grana. In the membrane of grana or thylakoids are located the enzymatic systems that capture the energy of the sun and carry out the transport of electrons to form ATP.
Examine the diagram of the Amoeba. The feature identified by the arrow is an adaptation for which function? O A. storing food O B. movement O C. detecting light OD: pumping out excess water
Answer:
HII
Explanation
I beileive its C i hope this helps
Please look at the picture
Answer:
The answer is C
Explanation:
The other molecule that came from the synthesis
Is called
a ______simple sugar's what it is.
A. Organelle
B. Oxygen
C. Glucose
Answer: Glucose
Explanation:
KC is looking at cells in biology class, but he doesn’t know where they came from. He sees that the cells under his microscope have cell walls and chloroplasts. Therefore, KC is likely observing cell from:
Group of answer choices
The fur of classroom hamster
The blood from one of his classmates
Bacteria from a piece of uncooked meat
A leaf that got blown onto the floor
Answer:
The blood from one of hi class mate
Answer:
A leaf that got blown onto the floor.
Explanation:
Plant cells are the only cells w/ chloroplast!
Before the 1960s, most ecologists thought that the number of producers in an ecosystem was the only variable that limits the number of herbivores. The idea was that every level was regulated by the amount of food from the trophic level below it.
The complete question is as follows:
1. How did the green world hypothesis differ from this “bottom-up” view?
2. Imagine a simple food chain: Grass -> Grasshoppers -> Mice. If snakes that eat mice are added to the ecosystem, how would you redraw the food chain to represent this change?
3. After the snakes are added, would you expect the amount of grass to increase or decrease? Explain your reasoning.
Answer:
1. The green world hypothesis states that plants or producers are consumed in less quantity by herbivores due to predators and other conditions which is different from the hypothesis as it says the number of the herbivores are regulated by the organism above them in the food web instead of below.
2. before adding snake: Grass →Grasshoppers →Mice ( arrow towards predator)
After adding the sakes: Grass →Grasshoppers →Mice→Snakes. (as snakes eat mice so they will be added after mice)
3. The grasses will decrease as there would be fewer mice due to snakes and the number of grasshoppers will be high which leads to the decrease in the amount of grass.
A fern gametophyte is diploid. True False
Answer:
true i think-
Explanation:
why is rare to have permanent taste loss ?
Answer:
The answer to this question is given below in this explanation section.
Explanation:
"permanent taste loss"
In many cases the cause is temporary,Such as an infection that inflame the nasal packages.Such as chemical exposure,Alzheimer,s disease and aging, may cause a permanent loss of taste.A lost sense of taste may refer a partial or total loss of taste.People may also use this phrase to describe and overpowering and typically unpleasant taste.
Many medical issue may lead to a loss of taste.Some of these issues are harmless,while other may require a doctor to diagnose them.The type of treatment will depend on the cause.The most common taste disorder is phantom taste perception. A person with this disorder will have strong,lingering taste is their mouth,even when it is empty.
The taste is often unpleasant and may overpower the taste of other foods while they eat.The taste may also occur alongside a president burning sensation in the mouth.
What are the reactants of photosynthesis?
What are the products of photosynthesis?
What is the source of energy for photosynthesis?
What types of cells carry out photosynthesis?
Why do leaves lose green color during the fall?
Explain the changes that can occur in the atmosphere due to deforestation (cutting down trees)?
Why do trees gain weight over time? Hint - Think in terms of photosynthesis
What are the reactants of cellular respiration?
What are the products of cellular respiration?
What is the source of energy for cellular respiration?
What types of cells carry out cellular respiration?
Why is it dangerous to hold breath underwater for long period of time? What will happen to brain cells? Hint - Think in terms of cellular respiration
Answer:
don't know
Explanation:
but have a good new year
WILL GIVE BRAINLIEST! help plss
Answer: hi
Explanation: please give me brainliest
help imagine above
Answer:
The middle part of the image shows an eclipse
Explanation:
An eclipse occurs when the moon body blocks the view of the sun since being closer to the earth and covering our small view of the sun itself - this creates a sort of shadow on the earth.
Each image shows the moon, for example, blocking part of our view of the sun, of which the light the sun emits is decreased as the moon is an opaque object.
PLEASE HELP
In boxes A and B, the genotypes are shown for you. You need to determine the phenotypes. In boxes C and D, you must figure out the genotypes yourself first. Then, determine the phenotypes.
Answer:
Hope it helps and HAPPY NEW YEAR MY DEAR ☆☆
Explanation:
Box #1: Black fur, black eyes
Box #2: Black fur, red eyes
Box #3: White fur, black eyes
Box #4: Black fur, red eyes
Muscles of the heart are called visceral muscles?true or false
Answer:
False
Explanation:
those muscles are found in the digestive and respiratory systems
Answer:
false
Explanation:
Which statements fail to meet the requirements for scientific claim ?
___________________________________________________________
Answer:
The correct answer would be the first and third statements.
___________________________________________________________
___________________________________________________________
Explanation:
A scientific claim is defined as a statement which is a conclusion obtained from numerous experiments and observations.The scientific claim usually remains the same in the provided conditions. In the first statement, Copernicus's model stating that the planets revolve in the circular orbits around the sun was not accepted and thus, it is not a scientific claim. Similarly, Newton's laws of motion are uniform and work properly in the environment. Thus, it also does not form a scientific claim.
____________________________________________________________
Each body cell of a blue fin dolphin contains 56 total chromosomes . how many chromosomes are contained in a blue fin dolphin sex cell?
Answer:
28
Explanation:
28: for female x and 28 for y male
In how many days the life cycle of honey bee complete
Answer:
In 10 days it will be completed
Difference between seedling and germination
Answer:
Explanation:
A seedling is a young plant grown from a seed in the nursery for the purpose of transplanting, while germination is the process of beginning growth from a seed or spore. In germination plants and fungal species, seeds sprouts to produce a seedling and the formation of spores. The stages of germination include, increase water imbibition into the seed, activation of metabolic activities, and protrusion of the radicle.