Answer:
Red blood cells transport oxygen around the body. They are specialised to carry oxygen because they: contain large quantities of a protein called haemoglobin , which can bind oxygen. don't have a nucleus, so there is more room for haemoglobin.
Explanation:
Use the following information to answer the questions below. Skin color in a certain species of fish is inherited via a single gene with four different alleles. One fish of this type has alleles 1 and 3 (S1S3) and its mate has alleles 2 and 4 (S2S4). If each allele confers a unit of color darkness such that S1 has one unit, S2 has two units, and so on, then what proportion of their offspring would be expected to have five units of color
Answer:
1/2 = 50% of the progeny is expected to have 5 units of color → S1S4 + S2S3
Explanation:
Available data:
Single gene with four different alleles → S1, S2, S3, S4Each allele confers a unit of color darknessS1 one unitS2 two unitsS3 three unitsS4 four unitsCross:
Parentals) S1S3 x S2S4
Gametes) S1 S3 S2 S4
F1) 1/4 = 25% of the progeny is expected to be S1S2 → 3 units
1/4 = 25% of the progeny is expected to be S1S4 → 5 units
1/4 = 25% of the progeny is expected to be S2S3 → 5 units
1/4 = 25% of the progeny is expected to be S3S4 → 7 units
1/2 = 50% of the progeny is expected to have 5 units of color → 1/4 = 25% S1S4 + 1/4 = 25% S2S3
The Human Immunodeficiency Virus (HIV) prevents the body from being able to fight off infections. TRUE or FALSE
Answer:
HIV (human immunodeficiency virus) is a virus that attacks the immune system. The immune system becomes weaker, making it harder for the body to fight off infections and some kinds of cancers. Most people who are diagnosed early and take medicines for HIV can live long, healthy lives.
(I found this answer from the web so credits to them :)
will mark brainlist, help please!
Answer:
C
Explanation:
what is not a principle of the cell theory
The cell theory consists of:
1. all living organisms are made up of cells
2. cells are the basic structural/organizational unit of all organisms
3. all cells come from pre-existing cells
Where does the carbon comes from that makes up the glucose molecules?
Answer:
from CO2
Explanation:
Answer:
carbon dioxide
Explanation:
The carbon atoms used to build carbohydrate molecules comes from carbon dioxide, the gas that animals exhale with each breath. The Calvin cycle is the term used for the reactions of photosynthesis that use the energy stored by the light-dependent reactions to form glucose and other carbohydrate molecules
I need someone to help me!!
Answer:
I believe the answer is B. Vomiting and Fever.
Explanation:
This answer makes the most sense as spoiled food can lead to sickness, which can lead to vomiting and fever.
Which is the main material in a solar cell?
A. carbon
B. phosphorus
C. silicon
D. boron
Answer:
C.Silicon
Explanation:
By far, the most prevalent bulk material for solar cells is crystalline silicon (c-Si), also known as "solar grade silicon". Bulk silicon is separated into multiple categories according to crystallinity and crystal size in the resulting ingot, ribbon or water.
Answer:
C. silicon is the main material in a solar cell .
hope it is helpful to you
What is the sclera
Please help <3
what is chemical reaction?
Answer:
a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.
Explanation:
Which of the following statements is true?
A. All living things are made of the same elements.
B. Every organism is made of different elements.
C. Every species is made of different elements.
D. All matter is made of the same 10 elements.
Answer:
C
Explanation:
its written that every living thing is made of different objects
how does global warming affect el niño and la niña
hope it helps a lot po and also mark me
thanks
Use Darwin's theory of Natural Selection to explain the process by which the four-legged land animal, A, may have evolved, over about 20 million years, from the fish-like creature, C, in the swampy conditions of the time.
Answer:
Due to environmental conditions.
Explanation:
With the passage of time, environmental conditions change which causes the evolution of of four legged land animals from fish like creature. This change occurs due to change in environment. In water, there is no need for legs because fish moves with the help of fins and tail but the organisms that lives on land has legs in order to move from one place to another so we can say that change in the physical structure of organism occurs due to environment.
The development of this new BLG-free, hypoallergenic milk is based on a science that came to the forefront 150 years ago. What scientist's work provided the basis for such feats in biotechnology?
Answer: Mendel and genetics
Explanation:
If 25% of a population has a recessive allele and 75% have the dominant trait for a 2-allele trait, if in Hardy-Weinberg Equilibrium then what would the percentage of recessive alleles be in that population
Answer:
q = 0.5
The percentage of the recessive allele is 50%
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
which of the following is good for a plant?
Answer:
c,d
Explanation:
hehe don't be mad at me
Explain why DNA Sequencing proves that all species have a common ancestor
Answer:
Below
Explanation:
The reason why we can conclude that all species have common ancerstory is that all the species have several same base pairs. Here are a few listed:
A-G-G-C
As well as this later on:
C-C-A-A-C-C
Because this strand of DNA has several common base pairs, we can conldude that the species have common ancestory that made it this way.
Hope this helps!
Other than mountains, what else could cause geographic isolation?
Answer:
Other than mountains, what else could cause geographic isolation? population to start a new population. genetic drift -change in allele frequency in a small population due to random chance. migration - some organisms move away to start a new population
Explanation:
thank me later
Structures and behaviors for animals to obtain food
Select one:
a.
Adaptations
b.
Respiration
c.
Digestion
A guard bees job is to protect the hive from intruders, a job that can lead the guard bee to sacrifice its own life. If the guard bee cannot reproduce, how do genes for altruism increase in the population
Answer:
Altruism genes are dominant, so they can be inherited more easily. Bee colonies are so large that the loss of a few individuals will not affect the gene pool.
Explanation:
The altruistic genes are easily and sophistically inherited from the parents to their offspring. These genes are dominant that increase the size of the population by sacrificing their own life for the benefit to pass their genes to the next generation.
What do you mean by Altruism?Altruism may be defined as a behavior in which one individual sacrifices their own fitness value to increase the fitness value of the other individual that is genetically as well as closely related.
Altruistic behavior is often associated with Kin selection. The genes for altruism are exposed to the population directly from the parents and then passes to the offspring.
Therefore, it is well described above.
To learn more about Altruism, refer to the link:
https://brainly.com/question/11287458
#SPJ2
Are cows allopatric or sympatric?
Please help
Select the correct answer from each drop-down menu.
When a liquid is cooled, the kinetic energy of the particles
the space between the particles
. The force of attraction between the particles
and the matter changes its state to solid,
Reset
Next
Answer:
decrease
increase
decrease
Explanation:
hope this helps
1. Shifting from mechanical picking to hand picking results in which of the following improvements?
a. reduced labor cost
b. increased packing efficiency
c. reduced senescence
d. increased speed
Answer:
The answer is A
Explanation:
The offspring in binary fission are
identical
different
Answer:
Identical
Explanation:
Binary fission is a form of asexual reproduction. This is when only one parent is involved in creating offspring. Since there is only one parent, two sets of DNA cannot be combined into a new offspring; so, it must be identical.
Which organ releases the hormone insulin in order to regulate the level of blood sugar in the body?
Gall Bladder
Liver
b. Pancreas
d. Spleen
Answer:
Pancreas
Explanation:
Insulin is an essential hormone produced by the pancreas.
Answer:
Pancreas
Explanation:
During digestion, your pancreas makes pancreatic juices called enzymes. These enzymes break down sugars, fats, and starches. Your pancreas also helps your digestive system by making hormones. These are chemical messengers that travel through your blood.
WITH SPECIFIC EXAMPLES, BRIEFLY DESCRIBE HOW FOOD CHAIN IS RELATED TO FOOD WEEB. Help please
Answer:
A food chain outlines who eats whom. A food web is all of the food chains in an ecosystem.
Explanation:
Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web.
The movement of water across a membrane does not require a concentration gradient.
A. True
B. False
Answer:
false
Explanation:
because it is osmosis any liquid (water) can move through the membrane withought energy
Answer:
False
Explanation:
Which is the best answer to explain how energy levels are affected as energy moves through a food pyramid?
a)Energy increases at the top of the food pyramid because the top predators need more energy
b)Energy increases at the bottom of the food pyramid because consumers pass energy on to the producers
c)Energy decreases at the top of the pyramid because energy is lost at each level of the pyramid
d)Energy decreases at the bottom of the pyramid because producers represent less energy than consumers
What are the responsibilities of the region of the brain highlighted below? (4 points)
Image highlights the central region of the brain, above the brain stem.
a. Controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities
b. Regulating important involuntary bodily functions such as blood pressure, heart rate, breathing, and swallowing
c.
Regulating the bodys homeostasis, hunger and eating, thirst and drinking, and other functions of basic survival
d. Coordinating movement and balance by using information from sensory nerves, including hand-eye coordination
Answer: B
Explanation:
Answer:
D.) Coordinating movement and balance by using information from sensory nerves, including hand-eye coordination
Explanation:
I took the test and got it right, hope this helps
Into what kingdom would each of the following be classified:a. Unicellular prokaryotes that live in dust. _______________________[Text Wrapping Break] b. Unicellular eukaryotes that line in pond water. _____________________[Text Wrapping Break] c. Multicellular eukaryotes that live all over the planet and consume food. ______________________ [Text Wrapping Break] d. Unicellular prokaryotes that live in volcanic ash. __________________________[Text Wrapping Break] e. Multicellular eukaryotes that have cell walls and are heterotrophic. _______________________[Text Wrapping Break] f. Multicellular eukaryotes that have cell walls and are autotrophic. ________________________
Answer:
A. Unicellular prokaryotes that live in dust. Monera.
B. Unicellular eukaryotes that line in pond water. Protist.
C. Multicellular eukaryotes that live all over the planet and consume food. Animals.
D. Unicellular prokaryotes that live in volcanic ash. Monera.
E. Multicellular eukaryotes that have cell walls and are heterotrophic. Fungi.
F. Multicellular eukaryotes that have cell walls and are autotrophic. Plants.
Explanation:
The 5 kingdoms are a way of classifying all living organisms on our planet, as each species inside a kingdom shares similarities with the other species in it.
Monera kingdom includes all of the prokaryotic organisms that exist, which includes bacteria and archaea. These beings are characterized by lacking a nucleus and membrane-bound organelles and having one single circular chromosome that is found in the center of the cell. They are unicellular. Example: escherichia coli.
Protists are the most primitive eukaryotes that exist, most of them are unicellular and microscopic, but possess a nucleus and specialized organelles like the rest of the eukaryotes have. Example: yeasts.
Fungi and Plants are quite similar, they are multicellular eukaryotes that have cell walls. Their main difference relies on the way they obtain nutrients: fungi are heterotrophs, they feed off living things; plants, however, are autotrophs and realize photosynthesis (they do not need to feed). Fungi and Plants also reproduce differently: fungi reproduce through spores; plants can reproduce sexually or asexually. Fungi example: amanita; plant example: cactus.
Animals are multicellular eukaryotic organisms that reproduce sexually and are heterotrophs (some feed off plants, some feed off other animals). They are characterized by their ability to move. Example: horse.
What is the answer to this?
Plsss helpp