Answer:
Trace fossils may consist of impressions made on or in the substrate by an organism. For example, burrows, borings (bioerosion), urolites (erosion caused by evacuation of liquid wastes), footprints and feeding marks and root cavities may all be trace fossils.
By the way I got this off thee internet and copy and pasted it so don't write it just look and write in your own words please. Please do not copy and paste or write what i wrote because this is someone else's explanation or answer. If you can brainllest me that would be great but you don't have to if you don't want to. Hope this helps!!!!
Explanation:
Which structures are part of the body's first line of defense against pathogens?
Answer:
Skin, tears and mucus are part of the first line of defence in fighting infection. They help to protect us against invading pathogens.
Explanation:
can I have brainliest
If you’re going hiking this weekend and you have the option of hiking a mountain (A) that is 1400 meters in height and a mountain (B) that is 650 meters in height, BUT you know that you have limited time because of other plans – which mountain would you choose to hike? Why?
Answer:
I would choose mountain B cause it's only 650 meters short from mountain A (1400 meters )
Explanation:
short the length less the time we take to cover .
so we will complete our hiking soon. we will get time to do other things .. so it will be best to hike on mountain B
What is the chemical formula of oxygen?
Answer:
O^2
Explanation:
5) One of the following is used for the formation of nuclear lamina?
A) Intermediate filaments.
B) Microtubules.
C) Microfilaments.
D) All of them.
a
what activity makes water came to the surface?
Answer: Surface water is water located on top of the Earth's surface such as rivers, creeks, and wetlands. This may also be referred to as blue water. The vast majority is produced by precipitation and water runoff from nearby areas.
Explanation:
Explain how independent assortment occurs in cells and explain its importance
Answer:
Independent Assortment is the second law of inheritance
Traits are passed from parents to offspring independently of one another.
Independent assortment is random and occurs during Metaphase I of meiosis.
There are two possible alignments for the chromosomes.
Since the alignments are random and not assigned, genetic variation occurs.
Explanation:
right on edge 2021
Question 3
3
If you are convicted of a DUI, this event will have a serious impact on your family.
a) True
b) False
Explanation:
i thank it is a maybe I not sure
Which descriptions correctly identify what could be
malfunctioning with the malignant tumors? Check all
that apply
Cells are dividing without growth factors.
The cells are not responding to apoptosis.
Disease has taken over the cells.
Cell surface proteins do not recognize other cells in
the body
Damaged DNA has produced higher concentrations
of cyclin in tins cells.
Answer:
Explanation:Which descriptions correctly identify what could be malfunctioning with the malignant tumors? Check all that apply. Cells are dividing without
Easy 10 points . Help please! Look at the picture and answer the question
Which statements accurately describe the structure of the cell membrane? Check all that apply. The cell membrane is a single layer of phosphate molecules and lipids. The cell membrane is a double layer of phosphate molecules and lipids. The cell membrane has protein channels that are partly inside and partly outside the cell. The cell membrane has protein channels that are entirely inside the cell. The cell membrane’s protein channels only let certain molecules pass through. The cell membrane’s protein channels let all molecules pass through.
Answer:
The cell membrane is a double layer of phosphate molecules and lipids.
The cell membrane’s protein channels only let certain molecules pass through.
The cell membrane has protein channels that are partly inside and partly outside the cell.
Explanation:
Answer:
The cell membrane is a double layer of phosphate molecules and lipids.
The cell membrane’s protein channels only let certain molecules pass through.
The cell membrane has protein channels that are partly inside and partly outside the cell.
Explanation:
When a germ cell undergoes meiosis, which event would MOST likely result in four aneuploid daughter
cells?
A. misalignment of the chromosomes during metaphase I
B. misalignment of the chromosomes during anaphase I
C. misalignment of the chromosomes during metaphase II
D. misalignment of the chromosomes during anaphase II
Answer:
B. misalignment of the chromosomes during anaphase I
Explanation:
Aneuploidy refers to an error in the chromosomal number of a cell. This occurs when the chromosomes fail to separate equally into individual cells, a process called MEIOTIC NONDISJUNCTION. Meiotic disjunction can occur in either the anaphase stage of meiosis I or meiosis II, however, different outcomes are produced.
When chromosomes fail to separate at meiosis I, it results in two gametes that lack that particular chromosome (n-1) and two gametes with two copies of the chromosome (n+1). This means that the four daughter cells will have an incorrect number of chromosomes, hence, the misalignment of the chromosomes during anaphase I will result in four aneuploid daughter cells.
Answer:
A. misalignment of the chromosomes during metaphase I
Explanation:
Took the test.
In general, why might ecologists be concerned when new invasion species arrive in an ecosystem?
Answer:
In general, why might ecologists be concerned when new invasive species arrive in an ecosystem? Like terrestrial environments, coral reefs can be damaged by invasive species. Reefs are also impacted by disease-causing bacteria, humans, and other biotic factors, or living parts of the ecosystem.
Explanation:
.
Which of the following accurately describes the process of crossing over?
А
Crossing over occurs before replication and non-sister chromatids exchange gene segments to make new combinations of genes.
B
Crossing over occurs after replication and non-sister chromatids exchange gene segments to make new combinations of genes.
с
Crossing over occurs before replication and only sister chromatids exchange gene segments to make new combinations of genes.
D
Crossing over occurs after replication and only sister chromatids exchange gene segments to make new combinations of genes.
The statement that accurately describes the process of crossing over is that crossing over occurs after replication and non-sister chromatids exchange gene segments to make new combinations of genes. So, the correct option is B.
What is Crossing over?Crossing over is a process through which there is an exchange of genetic material between non-sister chromatids of a homologous chromosome.
After the replication process, the amount of genetic content gets doubled and arranged in the form of chromatids. Two chromatids of the same chromosomes are known as sister chromatids. And those two chromatids of homologous chromosomes are known as non-sister chromatids.
Therefore, crossing overs occurs after replication, and non-sister chromatids exchange gene segments to make new combinations of genes.
To learn more about Crossing over, refer to the link:
https://brainly.com/question/927405
Female reproductive structures in a flower include; style, ovary and stigma True False
Answer:
Stigma, style, and ovary, so yes it is true :)
Explanation:
Answer:
True
Explanation:
Which of these cars do you think is not accelerating?
A car stopped at a curb
A car slowing down at a stop sign
A car speeding up to pass another car
A car turning a corner
Crossing over and fertilization both result in which of the following
A.transcription
B.increase in genetic variation
C.an increase in the chromosome number
D. horizontal gene transfer
Answer: increase in genetic variation
Explanation:
What is intangible senses?
Give some examples..
Answer:
Something that can't be perceived my you senses. (you maybe can't smells it, or taste it, or etc.) it doesn't have a physical presence.
If a red snap dragon is crossed with a white snap dragon,what is the phenotype of the offspring?what are the possible genotypes of the offspring?
Subject:
Technology and Livelihood Education
Answer:
What I Know
1.A
2.A
3.B
COMING SOON
What percent of America's original forest remains today?
Less than 4% or under 40 million acres of America's original forests remain in existence.
(hope this helps ^^)
Answer:
Less than 4% or under 40 million acres of America's original forests remain in existence. According to the World Resources Institute, less than 1% of "Frontier Forests"--large, contiguous virgin forests with all the species intact--still exist in the lower 48 states.
Explanation:
The light dependent reaction takes place in the
Answer:
Thylakoid
Explanation:
each of a number of flattened sacs inside a chloroplast, bounded by pigmented membranes on which the light reactions of photosynthesis take place, and arranged in stacks or grana.
What is the process the does not require oxygen?
Electron Transport Chain
Fermentation
Krebs Cycle
None of the above, they all need oxygen
Answer:
The process that does not require oxygen is fermentation.
Explanation:
Fermentation is an alternative route of cellular respiration for obtaining energy, in the absence of oxygen. In aerobic respiration, oxygen is the acceptor of electrons from NADH but, in anaerobic respiration, the electron acceptor is an organic compound.
The fermentation process does not occur in the mitochondria nor does it involve the electron transport chain, and has a low energy yield at the end of the process.
With respect to the other options:
The electron transport chain and the Krebs cycle occur in the presence of oxygen.Fermentation is an alternative route for obtaining energy, in the absence of oxygen. Fermentation is the process that does not require oxygen.
Fermentation:
It is an alternative route for obtaining energy, in the absence of oxygen. In anaerobic respiration, the electron acceptor of NADH is an organic compound.
It has a low energy yield at the end of the process.
The electron transport chain and the Krebs cycle are the processes that occur in the presence of oxygen.
Therefore, Fermentation is the process that does not require oxygen.
To know more about fermentation,
https://brainly.com/question/13050729
The cell membrane of the red blood cell will allow water, oxygen, carbon dioxide, and glucose to enter and leave the membrane. Why is this function of the cell membrane important?
Answer:
All substances that the cell needs(such as water and other nutrients) enter through the cell membrane. Waste products of the cell come out through the cell membrane. The cell membrane prevents harmful substances from entering the cell and keeps useful substances inside the cell.
If organisms are energy deprived (ie given no food, nutrients or light) indoors at 23°C for 24 hours and they
lose mass, what is the m t likely explanation of reduction in mass over those 24 hours?
o Cellular respiration
O Water loss due to evaporation
O Growth and reproduction
The law of conservation of matter
Answer:
Cellular respiration
Explanation:
The likely explanation for this reduction in mass is due to cellular respiration going on within the cell.
Cellular respiration is a metabolic process in which food materials are broken down to produce energy. This is catabolism. The food materials contributes significant weight to the body system of an organism When the food reserve is depleted, weight loss ensues. Cellular respiration will therefore proceed and the food reserve is being depleted. This will eventually lead to loss of weightA____needs a host to survive
Answer:
virus................
what route does oxygen take as it enters the body?
Answer:
D
Explanation:
An organism has a haploid number of 36. What is the organism's diploid
number?
Answer:
72, because you just multiply by 2
What is the best definition for a hypothesis?
1. Hypothesis are not well developed and are lack of a well-confirmed body of explanatory material.
2. Hypothesis may be well-developed, well-confirmed body of explanatory material.
3. none of the above
4. all of the above
ANSWER:I think the answer is number 3
EASY !! Which choice describes a way that soil is lost?
•desalinization •bioremediation
•pesticides
•erosion
Answer: desalinization
Explanation: bc pesticides gets rid of pests hence PESTICIDES
erosion won’t work I think and neither will biomeditation.
Answer:
desalinization
Explanation: desalinating oil turns it into gas
Why is oxygen important to humans? *
A. It is the only gas in Earth's atmosphere.
B. Our cells require oxygen gas to break down the food we consume and provide the
energy we need to live.
C. It's not important - humans can breathe in multiple gasses for energy.
Answer:
b is the answer
Explanation:
b is the answer
Living organisms break down polysaccharides into?
