b. False
The correct answer is; b. False
A hormone is not an organ. Hormones are chemical substances that are produced in the endocrine glands in the body. Hormones act as special messengers by controlling almost all bodily functions such as hunger, reproduction, emotions and mood. Examples of hormones and their major function are insulin (metabolic hormone), estrogen (sex hormone), adrenalin (stress hormone), ghrelin (hunger hormone), leptin (satiety hormone), melatonin (sleep hormone), testosterone (sex hormone) and thyroid (growth hormone).
Answer:
The answer is B.
Explanation:
A hormone is a chemical substance produced and released by endocrine glands to help regulate bodily functions.
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B) active transport using ATP and carrier proteins
C) passive transport by osmosis through the proteins
D) active transport using a process called phagocytosis
The correct option is passive transport by diffusion through proteins.
A type of cellular transport known as passive transport involves the movement of molecules and ions along concentration gradients. It indicates that a drug has a propensity to migrate from a region of higher concentration to a region of lower concentration.
Contrary to active transport, another type of cellular transport, which fundamentally requires ATP to move substances against their concentration gradient, the process does not require metabolic energy (e.g. ATP) because the chemicals are moved downhill or along their concentration gradient.
The four main methods of passive transport are osmosis, filtration, simple diffusion, and assisted diffusion.
Therefore, The correct option is passive transport by diffusion through proteins.
To learn more about active transport, refer to the link:
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Golgi body should be in animal cells only.
Lysosomes should be in animal cells only.
Nucleus should be in plant cells only.
Ribosomes should be in plant cells only.
Vacuoles should be in both animal and plant cells.
Answer:
ER should be in both animal and plant cells.
Vacuoles should be in both animal and plant cells.
Explanation:
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Answer:
ER is found in both animals and plants
Explanation:
the endoplasmic reticulum is found in both cells of animals and plants
b) ATP to ADP
c) NADP+ to NADPH
d) CO2 and H2O to C6H12O6 and O2
Answer: B) ATP to ADP
This reaction is termed as ATP hydrolysis.
ATP ( adenosine triphosphate) conversion to ADP ( adenosine diphosphate) is an energy producing reaction ( exothermic reaction). ATP contains high energy bonds called phosphoanhydride bonds. Thus, when this bond is broken down, ATP is converted to ADP and Pi ( inorganic phosphate) and releases large amount of energy.
B) decreases the chance that an offspring will receive a dominant allele.
c) increases the genetic variability of the offspring.
D) decreases the genetic variability of the offspring.
Answer: The correct answer is c) increases the genetic variability of the offspring.
According to Mendel's law of segregation, during the process of gamete formation, alleles ( alternative forms of gene) are separated into different gametes ( reproductive cells of the organism). In other words, every gamete consists of one allele. It is also called law of purity of gametes.
Due to this segregation, only single allele is passed from each parent to their offsprings. Thus, in different offsprings, the chances of genetic variability is increased as there is a likelihood that different offsprings will receive different alleles.
Thus, C) is the right answer.
Mendel's Law of Segregation describes the process of alleles separation during meiosis, which results in genetic variability in the progeny. This segregation contributes to a greater genetic diversity, enhancing survival and adaptability in different environments.
According to Mendel's Law of Segregation, during the process of meiosis, a parent organism's alleles separate to form gametes. With each parent's separate alleles moving into different gametes, only one allele will pass from each parent onto an offspring.
Among the options provided, the correct consequence of this process is that it c) increases the genetic variability of the offspring. This happens because the shuffling and separation of alleles ensure a mix of hereditary information in gametes. This mix of parental alleles in the offspring enhances genetic diversity within a population, thereby increasing its ability to adapt and survive in varying environmental conditions.
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all living cells have enzymes.
B)
life would not be possible without enzymes.
C)
enzymes can speed chemical reactions by 100s to millions of times.
D)
there are a few types of enzymes, but they each perform many types of reactions.
The incorrect statement about enzymes is that there are only a few types, each capable of performing many types of reactions. In reality, there are thousands of enzyme types each specifically designed for a particular type of reaction.
The subject of this question is about enzymes, which are proteins functioning as biological catalysts. They speed up chemical reactions and are vital to life. The options A), B), and C) state that all living cells have enzymes, life would not be possible without enzymes, and enzymes can speed up chemical reactions by hundreds to millions of times. These options are all true. But the statement D) that there are a few types of enzymes, each performing many types of reactions, is incorrect. In fact, there are thousands of different types of enzymes and each enzyme usually only catalyzes one type of chemical reaction.
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