Answer:
Q no. 1
Explanation:
1) How several food chains are related a food chain with two levels
Answer:
1 How several food chains are related a food chain with two levels
In the deep ocean layer, the temperature and salinity of the water is
options to anwser
the same
continues to decrease rapidly
Answer:
Option 2:- continues to decrease rapidly
Describe the relationship between a tree and a cow. (Use terms like oxygen, carbon dioxide, photosynthesis, and cellular respiration)
Answer:
Without the tree the cow couldn't live.
Explanation
The cow breathes in oxygen and breathes out carbon dioxide. The tree uses cellular respiration and photosynthesis in order to take carbon dioxide (which the cow produces) and make it into oxygen (which the cow needs to breaths).
Sacculina carcini is a barnacle that attaches to the underside of the green crab. The barnacle finds a hole in the
green crab's exoskeleton, then uses microscopic hairs to feed on nutrients from the green crab's blood. The barnacle also lays its eggs in the green crab reproductive system, which sterilizes the green crab.
Which term describes the role of S. carcini in this relationship?
a.prey
b.host
c.parasite
d.predator
pls help!!
Answer:
c. parasite
Explanation:
the barnacle benefits from the host while the host is harmed from the barnacle
Answer:
c the parasite <3
Explanation:
In what part of the cell does fermentation occur?
Answer:
cytoplasm
Explanation:
As with glycolysis, fermentation takes place in the cytoplasm of the cell. There are two different forms of fermentation—lactic acid fermentation and alcoholic fermentation.
Which will most likely result from a low-pressure weather system?
B. warm temperatures
D. cloudy conditions
A. clear conditions
C. cool temperatures
Please I need help with my homework I have to turn it in tomorrow morning
Answer:
Some factors that may cause a decrease in population size:
- a high mortality rate due to an infectious disease
- a low birth rate
- a high mortality rate due to interspecific competence
- a high emigration rate
Explanation:
In biology, population size (N) refers to the total number of individuals in a given population. The four main factors that affect population size are birthrate (natality), death rate, immigration rate (i.e., the number of individuals of a given species that move into a population), and emigration rate (i.e., the number of individuals of a given species that move out of a population). Both birthrate and immigration are known to increase N, while death rate and emigration are rates known to decrease this value.
Select all that describe features of prokaryotes.
A. Prokaryotes don't have a nucleus
B. Prokaryotes absorb nutrients directly from the water they live in
C. The cells are surrounded by a cell membrane
D. Prokaryote Organelles are free within the cell
E. Prokaryotes are multicellular organisms
Answer:
A. Prokaryotes don't have a nucleus
D. Prokaryote Organelles are free within the cell
Explanation:
Answer:
A
D
B
Explanation:
Hope this helps
:)
Does the sodium-potassium pump move?
Answer:
The pumping method of sodium-potassium pushes sodium and potassium ions against elevated concentration levels. It transfers two potassium ions into the cell where the levels of potassium are high, and pumps three sodium ions into the extracellular fluid and out of the cell.
Explanation:
ATP's hydrolysis is an active transport mechanism by the passage of sodium and potassium ions across the cell membrane to provide the required energy.
Which of the following is not directly involved in protein synthesis?
tRNA
mRNA
Ribosomes
Mitochondria
Whoever answers I will mark brainlest
Answer:
Anaphase and Prophase
Explanation:
The data table shows the percentage of amino acid
similarities found in a protein for several organisms
when compared to the same protein in rabbits.
Based on the data,which organism is most closely related to the rabbit?
a.hamster
b.pig
c.dog
d.cat
Based on the data, the organism that is most closely related to the rabbit is: b. Pig.
Which organism has the most similarity?According to the diagram, the organism that has the most closely related similarity to the rabbit is the pig. The pig bears 95.4% of amino acid similarity to the Rabbit. This is almost 100 percent similarity, so we can say that this animal bears the most resemblance to a rabbit.
Amino acids are base materials that are necessary for the formation of nucleotides and genetic materials so the similarity goes down to genetics.
Learn more about amino acids here:
https://brainly.com/question/14351754
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A geneticist is studying two traits in corn: kernel color and kernel appearance or ‘shine'. The R/r alleles determine kernel color (R – purple color; r – yellow color). The W/w alleles determine kernel ‘shine' (W – waxy; w – dull). The geneticist crosses two corn plants that are Rr Ww and Rr ww . What phenotypic ratio is expected from these two parents?
Answer:
Purple, waxy (R_W_) = 6
Purple, dull (R_ww) = 6
Yellow, waxy (rrW_) = 2
Yellow, dull (rrww) = 2
Phenotypic ratio = 3 (purple, waxy) :3 (purple dull) :1 (yellow waxy) :1 (yellow dull)
Explanation:
This question involves two genes coding for kernel color and kernel appearance or ‘shine in corn plants. The alleles for purple kernel (R) and kernel waxy (W) are dominant over the alleles of yellow color (r) and kernel dull (w).
According to this question, a geneticist cross two corn plants that have the genotype: RrWw and Rrww. The following gametes will be produced by each parent:
RrWw - RW, Rw, rW, and rw
Rrww - Rw, Rw, rw, and rw
Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:
Purple, waxy (R_W_) = 6
Purple, dull (R_ww) = 6
Yellow, waxy (rrW_) = 2
Yellow, dull (rrww) = 2
The phenotypic ratio expected from crossing these two parents is 3 (purple, waxy) :3 (purple dull) :1 (yellow waxy) :1 (yellow dull).
Experiments can be carried out only in a science lab.
TRUE OR FALSE.
Answer:
False
Explanation:
i hope i am right
A tall pea plant with red flowers has the genotype TtRr. This plant is crossed with another tall pea plant with white flowers, having the genotype Ttrr. What is the probability of getting dwarf plants with red flowers in the F1 progeny
Answer:
1/8 or 12.5%
Explanation:
This question involves two genes coding for height and flower color in pea plant. The alleles for tallness (T) and red flowers (R) are dominant over the alleles of short (t) and white flowers (r).
According to this question, a tall pea plant with red flowers (TtRr) is crossed with another tall pea plant with white flowers (Ttrr). The following gametes is produced by each parent:
TtRr - TR, Tr, tR and tr
Ttrr - Tr, Tr, tr and TR
Using these gametes in a punnet square (see attached image), the following proportion of F1 offsprings will be produced as follows:
Tall, Red (T_R_) = 6
Tall, white (T_rr) = 6
Dwarf, red (ttR_) = 2
Dwarf, white (ttrr) = 2
The probability of getting dwarf plants with red flowers in the F1 progeny is 1/8 or 12.5%.
Answer:
12.5
Explanation:
got it correct on test
what type of selection causes a shift in advantageous traits
Answer:
Natural Selection
Explanation:
In population genetics, directional selection, or positive selection is a mode of natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.
CO2 + H2O à H2O3
Is the above chemical equation balanced? Why or why not?
Dropdown
Choose the option that best matches the description given.
Selena was racing her quarter-horse against Jolene, who was also her rival for Sean's affections. Jolene was starting to overtake Selena. Trying to slow down the competition, Selena waved her riding crop in the air, intending to just tap Jolene on the shoulder. Instead, the strap lashed across Jolene's face, causing a huge welt.
battery
intentional infliction
assault
Can someone please help with this and explain! I will mark brainliest!!!
Answer:
D Flow of protons across an electrochemical gradient
Explanation:
The chloroplast adenosine triphosphate (ATP) synthase uses the electrochemical proton gradient generated by photosynthesis to produce ATP, the energy currency of all cells. Protons conducted through the membrane-embedded Fo motor drive ATP synthesis in the F1 head by rotary catalysis.
In chloroplasts, photosynthetic electron transport generates a proton gradient across the thylakoid membrane which then drives ATP synthesis via ATP synthase.
The light-induced electron transfer in photosynthesis drives protons into the thylakoid lumen. The excess protons flow out of the lumen through ATP synthase to generate ATP in the stroma.
Majority of ATP is produced by OXIDATION PHOSPHORYLATION. The generation of ATP by oxidation phosphorylation differs from the way ATP is produced during glycolysis.
Electrons are passed from one member of the transport chain to another in a series of redox reactions. Energy released in these reactions is captured as a proton gradient, which is then used to make ATP in a process called chemiosmosis.
D.Flow of protons across an electrochemical gradient
is the correct answer
A researcher found that the wild species of almond trees contains a chemical called amygdalin.
This chemical is converted into cyanide inside the human body and can be lethal. The researcher
found that a single gene mutation in some of the wild almond trees resulted in a variety that no
longer produced the chemical amygdalin. This variety of almond is largely harvested for human
consumption. Based on the study, the researcher claimed that some mutations are beneficial in
nature. Was the claim made by the researcher correct? Why or why not?
a) Yes. The mutated variety of almond was edible.
b) No. Not all almond trees produced seeds that were edible.
c) No. The mutation did not affect all varieties of almond trees.
d) Yes. Almond trees with amygdalin grew only in forests.
Answer:
a) Yes. The mutated variety of almond was edible.
Explanation:
Yes, the claim made by the researcher is considered correct because the mutation removes the amygdalin chemical from the almond so these almonds are now safe for eating. This removal only occur through mutation. Mutation is the sudden change occur in the DNA of cell that leads to different functions occur in the body so we can say that some mutation that is occur in organisms are beneficial.
A difference between DNA and RNA is that:
1.DNA has different bases than RNA
2.DNA is in the nucleus and RNA is never in the nucleus
3.DNA is a single strand and RNA is a double strand
4. DNA makes the proteins and RNA is the instructions
do heterotrophs perform photosynthesis
Answer:
I think the answer would be No my bad of I'm wrong
Cystic Fibrosis is an autosomal recessive disease. A carrier male is married to a carrier female. What is the chance they will have a child with cystic fibrosis?
0 percent
25 percent
50 percent
75 percent
100 percent
Answer:
25 percent
Explanation:
25 percent 25 percent
What colour does the iodine go when placed on a leaf that does not contain starch
Answer:
It goes blue/black if starch isn't present.
Explanation:
Should I add more detail to describe the trend?
please answer!! ASAP
1. What is biodiversity?
a) The animals that live only in rain forests.
b) The rich variety of live organisms in every
ecosystem on Earth.
c) The animals and plants species that live
only in your backyard.
2. Why do we need biodiversity?
a) it provides us with the food we need to eat
b)it provides us with virtually all the things we need to stay alive
c)so we have plenty of trees to use for fuels and materials
3.which of the following places has the highest biodiversity?
a)madagascar &indian ocean islands
b)tropical andes
c)caribbean islands
4. how many biodiversity ‘hotspots’ are there in the world?
a)12
b)25
c)34
5. in these ‘hotspots’ how much of the worlds species are found there?
a)10%
b)25%
c)50%
6. what does ‘endemic’ mean?
a) when a lot of people fall ill
b) when something is only found in one place
c) when a disease spreads throughout the world
7. why is biodiversity under threat?
a) habitat destruction
b)introduction of exotic species
c) both of the above and more
8. what can you do to help save biodiversity?
a) reduce, reuse, recycle
b) plant trees, clean local rivers and parks and protect habitats
c) all of the above
1.B
2.B
3.A
4.36
5.B
6.C
7.C
8.C
thanks me
What does the prefix trop mean?
Answer:
To turn/ react
Explanation:
When cells want to store up energy will they add or delete a phosphate group
Answer:
they will add.
Explanation:
When a cell has energy available it can store small amounts of energy by adding a phosphate group to ADP molecules producing ATP molecules. The energy stored in ATP is released when ATP is converted to ADP and a phosphate group.
Why do you think having many different species is important to humans?
Please write a creative answer! ;v;
Answer:
.
Explanation:
Biodiversity is important to humans for many reasons. ... Ecological life support— biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services
A male and female Oompah have the same genotypes: blue face (ff) and big feet (Ll). Determine what they’re offspring may look like!
Answer:
They Will have Blue Face and Large feet
Explanation:
for the blue face you will get 100% Blue face
for the large feet you will 75% Large feet and 25% small feet
Which of the following statement is not true?
a. Exposure to electromagnetic fields is known to cause leukemia.
b. Excessive exposure to asbestos can lead to asbestosis.
c.Excessive exposure to radiations can cause health problems including cancer. d. Any sound above 80 dB is potentially dangerous.