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Bumek [7]
3 years ago
7

.

Biology
1 answer:
Paraphin [41]3 years ago
5 0
100 percent, because if both parents have the same genotype of Tt then most likely the child will have 100percent.
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When a drug enters the body via oral ingestion, smoking, snorting, or injection, the chemicals move through the bloodstream and
Anna007 [38]

Answer:

Blood Brain Barrier(BBB)

Explanation:

This is a biological interface of special endothelial cells of astrocytes, pericytes , capillaries,  neurons and other  structures, acting as a physical barrier or  gate separating the Central Nervous system from the peripheral  blood circulations. Thus it  formed a tight junction serving as a  physical barrier to  selectively regulate the entrance of substances from the   cerebral blood flow   into the brain,  therefore maintaining homeostasis of the brain.

From above any  substances  absorbed into the blood stream  irrespective of the mode of entry  are transported through  the BBB, and  are selectively  regulated to enter the brain cells by the BBB's   interactions with the blood vessels, hormones etc.

Basically it allows the passage of nutrients,  a few  drug, hormones and resists certain toxins and pathogens for the brain homeostasis.

5 0
3 years ago
Read the overview and complete the interactivities that follow. The lac operon consists of a series of genes involved in the bre
Ber [7]

Answer:

1 True 2 false 3 false 4 true  5  true

Explanation:

1 The Lac I gene makes repressor protein  True

2 The structural genes encoded by lac operon are involved in lactose synthesis  false

3 The CAP protein is an activator protein that binds to the operator false

4 The product of Lac I is an allosteric protein that can undergo conformational change when allolactose binds to it  True

5 CAP binding causes DNA to bend facilitating RNA polymerase binding True

4 0
3 years ago
The ______ is a vital organ, and its functioning is essential to life.
attashe74 [19]
The heart is a vital organ, and its functioning is essential to life.
All your other organs may fail, and you will still be alive. Even if your brain stops working, and your heart is healthy, you will be alive in the vegetative state where you won't be conscious at all. However, once your heart stops working, you die, which means it is the most important organ in your body.
3 0
3 years ago
-Name the levels of the ecosystem from smallest to largest in the ecosystem.
Korvikt [17]

Answer:

organism, population, community, ecosystem, and biome.

Explanation:

4 0
3 years ago
Which safety practice should always be done at the beginning and the end of a microbiology lab
Rufina [12.5K]

Answer:

<em>Hand Washing</em> is one of the most important practices when it comes to avoid spreading germs due it helps removing microorganisms and potential pathogens that could be left on after regular activities which would alter the results of lab experiments, and also could easily remain after such lab experiments which could lead to the propagation of bacteria or harmful chemicals.

Explanation:

6 0
3 years ago
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