Produces what a plant needs to use to stay alive
help is very much appreciated <3 (7th grade science)
Answer:
1. N/A
2. a cell
3. organ system
4.Tissues are groups of similar cells that have a common function. While an organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body.
5.
nervous system - The nervous helps the whole body communicate, our body needs to communicate so we can actually do things like breathing.
respiratory system - The respiratory system gives cells the oxygen they need to survive, and cells keep humans alive. Humans cannot survive without breathing.
digestive system - The digestive system is important for breaking down foods into nutrients, those nutrients are then used to heal and nourish the human body. The digestive system also helps us pass toxic wastes that build up in our bodies, so we don't get sick.
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hope this helps :)
what is a mutagen? pls
Answer:
the answer is B
Explanation:
A student drew the following diagram to model the structure of a prairie
community. Which level represents short and tall grasses?
A. Level 2
B. Level 1
C. Level 4
D. Level 3
Answer: B. Level 1
Explanation:
The prairie community is dominated by the grass and vegetation cover. Thus the lower most trophic level in the prairie ecosystem are the short and tall grasses. They produce major source of biomass for the herbivores of the food chain. They consume the grasses can be designated as primary consumers of the food chain. Also the producers which are grasses which make up the large amount of biomass will provide a source of food for the consumers. They will receive 100 percent energy from the sun and they will utilize 90 percent of it to make their food by the process of photosynthesis. Only ten percent of energy is transferred to the next trophic level.
Answer:
B level 1
Explanation:
please help (repost)
ACTUAL ANSWERS and braincells are required
5 How does the presence of coal on Antarctica indicate a climate change?
The discovery of a new coal deposit means people will be able to use this found fuel longer.
Coal forms from the remains of plants that lived in tropical swamps millions of years ago, Coal deposits can tell scientists what the composition of the atmosphere was in the past.
Coal is burned for fuel and it releases carbon dioxide into the atmosphere.
Answer:
The discovery of a new coal deposit means people will be able to use this fossil fuel longer.
Coal is burned for a fuel and releases carbon dioxide into the atmosphere.
What occurs in the brain (with regard to our muscles) as we train and even as we sleep?
What can the people of the Earth do to change this issue?
Answer:
Whereas a change in a person may take 10-50 years to manifest itself, changes in the earth can take millions of years to become apparent. Also, humans may experience changes in their personalities as well as in their bodies, while changes in the earth are never psychological.
Were invertebrates more common? Did most organisms live on land or in the sea?
Answer:
Yes, invertebrates are common than vertebrates. Most organisms started off in the sea, then adapted to live on land.
Explanation:
In the past, the first animals were mostly invertebrates and lived in the water for a certain amount of time. Then, they developed the right body parts to be able to live on the land.
Answer:
invertebrates are animals with no backbone.
DNA has four nitrogenous bases:
• ________________ that pairs with _________________ (Apple Tree)
• _________________ that pairs with _________________ (Car Garage)
Answer:
Adenine pairs with thymine
Cytosine pairs with guanine
Explanation:
The four nitrogenous bases: Adenine, Thymine, Cytosine and Guanine
Remember Apple Tree
Apple Tree = Adenine Thymine
and remember car garage
Car Garage = Cytosine Guanine
Answer:
Adenine pairs with thymine
Cytosine pairs with guanine
Explanation:
Hope this helps
Why do hooked seeds spread better than seeds without hooks
Answer:
Explanation:
Seed has been designed with all sorts of hooks, barbs and sticky gels to provide a good hold on free transportation. ... The seeds' small silky hairs provide feathery parachutes, so a good wind or a good blow can send out for quite some distance.
Answer:
they can get farther and can reach down farther to get the best soil
Explanation:
Glucocorticoids are steroid hormones that control cellular responses through several different signaling pathways. One of the signaling pathways involves the glucocorticoid receptor, an intracellular protein that is activated by binding to a glucocorticoid molecule. A simplified model of the glucocorticoid receptor signaling pathway is represented in Figure 1.
Which of the following statements best predicts the effect of a mutation that results in a loss of the glucocorticoid receptor’s ligand binding function?
Answer:
The answers are A and B.....
What are some advantages of asexual reproduction when compared to sexual reproduction? What are some disadvantages of asexual production when compared to sexual reproduction
Answer:
produces genetic variation in the offspring.
the species can adapt to new environments due to variation, which gives them a survival advantage.
a disease is less likely to affect all the individuals in a population.
When S strain bacteria were killed by being heated to 60C, then mixed with live strain bacteria and injected into mice, a greater % of
mice died than when the strain bacteria were heated to 100C. Can you propose an explanation for these observations?
Answer:
Due to live strain bacteria.
Explanation:
The first method cause more damage to the mice as compared to the second method because in the first method the killed bacteria were mixed with the live strain bacteria. This live strain bacteria causes diseases in the mice and eventually killed the mice while on the other hand, all the bacteria were killed due to very high temperature so that's why first method causes more damage than second one.
How do the laws of genetics (discovered by Mendel) govern what variations can and cannot be
possible in the offspring of any 2 sexually reproducing organisms? (List and define each of the 3 laws as
you answer this questions
After an mRNA molecule is constructed from a DNA template, which statement explain what happens next? You should select all
that apply.
A)
The mRNA becomes a double stranded molecule.
B)
The mRNA brings an amino acid to the nucleus.
C)
The mRNA contains a start codon that reads AUG.
D)
The mRNA travels from the nucleus to the ribosome.
E)
The mRNA is exported from the cell through the membrane.
Answer:
C) The mRNA contains a start codon that reads AUG.
D) The mRNA travels from the nucleus to the ribosome.
Explanation:
mRNA is single stranded. The mRNA does leave the nucleus but does not leave the cell. The mRNA does not carry the amino acids, that job belongs to the tRNA and it brings them to the ribosome.
The formation of the mRNA from the DNA is called transcription. In this process, the mRNA has both the introns and the exons.
The correct option of the following question is D
The replication, transcription all process is occurs in the cytoplasm of the cell. After the process of replication, the DNA moves to the nucleus for the transcription process. The process of the formation of protein from the mRNA is called translation. The translation process occurs in the ribosomes.
The protein formation requires the ribosomes hence the RNA must be transferred to the ribosomes.
Hence, the correct option is D that is the mRNA travels from the nucleus to the ribosome.
For more information, refer to the link:-
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Why didn't Bill Stacy have blue skin even though his mother did?
Answer:
because bill stacy was sick.
Explanation:
Bill Stacy does not have blue skin even though his mother did because of variations that occur during the segregation of alleles after fertilization.
What do you mean by Variations?Variations may be defined as the altered appearance among individuals in the same population. It is one of the factors that are responsible for maintaining diversity.
Due to variations, offspring do not identical to their parents. These variations have resulted from either erotic reproduction or mutation.
Therefore, Bill Stacy does not have blue skin even though his mother did because of variations that occur during the segregation of alleles after fertilization.
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How many valence electrons does phosphorus have?
A.6
B.4
C.5
D.3
Answer:
C: 5
Explanation:
i got it right on test.
Answer:
C.5
Explanation:
There are 5 in the Valence Shell.
Explain why the genes make the cell growth controller. The protein synthesis indicator and the DNA repair protein are active in all the cells.
Answer:
man im not sure
Explanation:
Breaking the Code
REPLICATION:
For each of the three DNA sequences below, write the sequence of the complementary strand of DNA that results after
replication.
DNA molecule #1:
TACCGGATGCCAGATCAAATC
Complimentary DNA #1:
DNA molecule #2:
TACGGGGGCGTAACCACAACT
Complementary DNA #2:
DNA molecule #3:
TACCTGTTAAGCTACAAAATT
Complementary DNA #3:
Answer:
Complimentary DNA #1:
ATGGCCTACGGTCTAGTTTAG
Complementary DNA #2:
ATGCCCCCGCATTGGTGTTGA
Complementary DNA #3:
ATGGACAATTCGATGTTTTAA
DNA molecule 1: TACCGGATGCCAGATCAAATC, complimentary will be ATGGCCTACGGTCTAGTTTAG, for DNA molecule 2: TACGGGGGCGTAACCACAACT, complimentary will be ATGCCCCCGCATTGGTGTTGA.
What is complimentary DNA?Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid. The DNA of an individual can be found in almost all of their cells.
The information molecule is DNA. It contains information needed to create proteins, which are other big molecules.
These instructions are dispersed throughout 46 lengthy structures called chromosomes that are found inside each of your cells. Numerous smaller pieces of DNA, known as genes, make up these chromosomes.
Complementary sequence is a sequence of bases in a nucleic acid that can be combined to generate a double-stranded structure.
For instance, G-T-A-C is the complementary sequence to C-A-T-G, where each letter represents for a different DNA nucleotide.
The DNA sequence can be:
DNA molecule 1: TACCGGATGCCAGATCAAATC, complimentary will be ATGGCCTACGGTCTAGTTTAG.DNA molecule 2: TACGGGGGCGTAACCACAACT, complimentary will be ATGCCCCCGCATTGGTGTTGA.DNA molecule 3: TACCTGTTAAGCTACAAAATT, complimentary will be ATGGACAATTCGATGTTTTAA.Thus, this is the complete match for the given scenario.
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