14. How many pairs of chromosomes do humans have? Why do you think there are pairs?
Answer:
1. Humans have 23 pairs of chromosomes--22 pairs of numbered chromosomes, called autosomes, and one pair of sex chromosomes, X and Y. Each cell in the human body contains 23 pairs of such chromosomes; hence our diploid number is 46, the number 'singularity' is 23.
2. This is because our chromosomes exist in matching pairs - with one chromosome of each being inherited from the biological parent.
In humans, one function of the skin is to prevent water loss. Skin releases water or holds in water when necessary.
Which two structures in plants have a similar function to skin?
roots and chloroplasts
phloem and roots
cuticle and stomata
stomata and phloem
Answer:
c
Explanation:
A father with type A blood and a mother with type B blood have a son with type AB blood. This is an example of: *
a. simple dominance
b. co-dominance
c. incomplete dominance
Why is the Indus River so important to the people of Pakistan?
Answer:
The Indus is the most important supplier of water resources to the Punjab and Sindh plains – it forms the backbone of agriculture and food production in Pakistan. The river is especially critical since rainfall is meagre in the lower Indus valley.
Explanation:
hope this is helpful!
What can expose rock to weathering?
mountain building
igneous processes
compression and heat
metamorphic processes
Answer:
I think compression and heat
Answer:
Explanation:
A
In multicellular organisms, many cells perform specific jobs that other cells do not, which allows
the organism to do more things in less time. This ability is known as ______
Answer:
Explanation:
the all work together
The circulatory system is composed of the blood, blood vessels and the heart.
Urea is transported in the blood plasma.
Name 2 other substances transported in the blood plasma.
The circulatory system is composed of the blood, blood vessels and the heart. Urea is transported in the blood plasma. The substances that transported in the blood plasma is water, salts, enzymes, hormones, and proteins.
What is the main function of circulatory system?The main function of the circulatory system is to transport oxygen and nutrients to provide the cells fuel for their cellar functions by performing cellular respiration. Blood carries oxygen and nutrients and transports it to the cells located in different parts of the body.
Veins are the blood vessels that carry blood towards the heart from the various part of the body it carries deoxygenated blood.After transporting the oxygen and nutrients to the cell blood picks the carbon dioxide gas from the cell that is produced by the cellular respiration and transports it to the lungs to breathe out from the body.
Arteries are the blood vessels that carry oxygenated or oxygen-rich blood away from the heart to the different parts of the body. Capillaries are the smallest blood vessels that get blood from the arterioles and are can be seen only under the microscope.
Therefore, The circulatory system is composed of the blood, blood vessels and the heart. Urea is transported in the blood plasma. The substances that transported in the blood plasma is water, salts, enzymes, hormones, and proteins.
Learn more about circulatory system on:
https://brainly.com/question/29259710
#SPJ2
How are bacteria cells different from human cells?
A
Bacteria cells do not contain a cytoplasm.
B
Bacteria cells do not contain genetic material.
C
Bacteria cells are much bigger than human cells.
D
Bacteria cells are less complex than human cells.
Answer:
maybe d
Explanation:
D is maybe the answer according to me.
Please help me I will give you the brain thing and extra points. image below. part 4
Tendons are bands of tough tissue that connects _______ to ______.
Answer: connects muscles to bones.
A body of air that has the same temperature, humidity and air pressure throughout is called
A.
an air mass
B.
a cloud
C.
maritime
D.
the Coriolis effect
Answer:
A huge body of air that has similar temperature, humidiry and air pres- A sure throughout it is called an air mass. Scientists classify air masses according to temperature and humidity.
Explanation:
A huge body of air that has similar temperature, humidiry and air pres- A sure throughout it is called an air mass. Scientists classify air masses according to temperature and humidity.
A huge body of air that has similar temperature, humidiry and air pres- A sure throughout it is called an air mass. Scientists classify air masses according to temperature and humidity.
What is air mass?A huge body of air that has similar temperature, humidiry and air pres- A sure throughout it is called an air mass. Scientists classify air masses according to temperature and humidity.
Thus, option "B" is correct.
To learn more about mass click here:
https://brainly.com/question/19694949
Embryos have the genes of _____.
1.the female parent
2.both parents
3.the male parent
4.neither parent
Answer:
2. Both parents
Explanation:
there are three copies of one particular chromosome instead of the normal two (one from each parent)
How did fossil records support the existence of a supercontinent?
A. Similar fossils were found on different continents.
B. Fossil records showed how old the continents were.
C. Similar fossils provided evidence that a meteor hit Earth.
D. Fossil records provided evidence that dinosaurs existed.
Answer:
A. Similar fossils were found on different continents
Explanation:
After the supercontinent on Earth broke up, organisms that lived in one area may have been "moved" to other parts of the planet, splitting up the population.
How are algae similar to plants?
1.Algae produce carbon dioxide gas as its waste product
2.Both contain cell wall and chlorophyll.
3.Both need egg and sperms cells to reproduce.
4.Algae and plants need oxygen to make energy.
Answer:
answe B. both contain cell wall and chlorophyll
Plants are autotrophs, which means they create their own food. What organelle carries out the process of photsynthesis that makes food for the plant?
ribosome
nucleus
chloroplast
mitochondria
Answer:
Chloroplast
Explanation:
Chloroplasts are plant cell organelles that carry out photosynthesis. Photosynthesis is the series of reactions that use carbon dioxide, water, and light energy to make glucose and oxygen.