BIOLOGY HIGH SCHOOL

One day younger brother of Sanjay asked difference betweentendon and ligament. Being a responsible student of science
Sanjay explained him such questions properly. His younger brother
satisfied with his answer and thanks him.

Answers

Answer 1
Answer:

Answer:

then what no answer for this question.

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Which of the following tastes may be detected at very low concentration?sweet
umami
bitter
salty

Answers

The correct answer is bitter.

People have very strong negative reactions when it comes to a bitter taste. Most of the substances like toxins have bitter taste. The ability of the taste buds to taste the bitter substances shows evolutionary history. The taste has evolved because most of the substances that are harmful to the human beings are bitter in taste. The substances such as alkaloids, drugs, medicines, quinine, caffeine and nicotine have bitter taste. These tastes are not very common to the taste buds so they are detected at very low concentrations.
The taste which we can detect already at very small concentrations is salty taste.

The reason why we have a special affinity for tasting bitter things. The reason why we can taste bitter things at extremely low concentrations is because potentially dangerous compounds can be bitter and it made evolutionary sense for organisms to adapt to taste bitter things.  

What stomach secretion is necessary for normal hemoglobin production in RBCs?A. HCl
B. pepsinogen
C. intrinsic factor
D. gastric lipase

Answers

Instrinsic factor is the stomach secretion necessary for normal hemoglobin production in RBCs.

Which best describes the brain stem?

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The best description about the brain stem is: it is the most important organ of our body's survival. It connects the brain and the spinal cord, controls the vital organs like the lungs and heart and it also coordinates the many essential body reflexes.

Define these terms: thermocline, halocline, pycnocline

Answers

thermocline - a steep temperature gradient in a body of water, that is marked by a layer above and below at which the water is at different temperatures.

halocline -  a subtype of chemocline caused by a strong, vertical salinity gradient within a body of water.

pycnocline - a layer in an ocean or other body of water in which water density increases rapidly with depth.

1. Look at the illustration in the figure. Which of the following internal characteristics would you expect to this animal to have?a) a psuedocoleom
b) paired organs
c) radial symmetry
d) a notochord

2. Present day animals that belong to the earliest group of primates that evolved include
a) New world monkeys, which live almost entirely in trees
b) the tarsiers, which have a broad face
c) the lemurs, which are nocturnal and have large eyes
d) hominoids, which evolved in Africa and Asia

Answers

1.) After looking at the illustration you provided, the internal characteristic that I would expect this animal to have is paired organs. This is because it shows two nephridium and two seminal recepticals. The correct answer is B, paired organs. 

2.) Present day animals that belong to the earliest group of primates that evolved include New World Monkeys, which live entirely in trees. I believe this is correct because the New World Monkeys split off and that led to chimpanzees and apes. The correct answer is A. 

Describe the process of fertilization

Answers

Answer:

Explanation:

Fertilization is the process by which haploid gametes (n- sperm and egg) fuse together to form a diploid cell called ZYGOTE. A gamete is a reproductive or sex cell produced by a sexually-reproducing organism during meiosis. Diploid organisms produce gametes that contains one set of chromosomes i.e haploid. Male organisms produce sperm while female organisms produce egg/ovum.

To ensure that the zygote, which grows into the full organism, has the correct number of chromosomes, only one sperm can fuse with one egg. It is worthy to note that, fertilization can either occur internally (union of sperm and egg within the body of the female parent) or externally (joining of gametes outside the body).
The sperm plasma then fuses with the egg's plasma membrane, the sperm head disconnects from its flagellum and the egg travels down the Fallopian tube to reach the uterus. In vitro fertilization (IVF) is a process by which egg cells are fertilized by sperm outside the womb, in vitro.
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